## APPENDIX A

List of Public Submissions on the Proposed Tailoring RuleDraft – Do Not Cite or Quote April 22 , 2010



### A - 1 

## APPENDIX A This appendix presents a list of public submissions, or “comments,” received by the Air Docket on the proposed Tailoring Rule. The first column identifies each comment by its unique Document ID number in the docket. In the second column, we have classified the comments by “letter type” to reflect certain recurring characteristics. The letter type for each submission includes the following classification s:  Extension

– comments where the primary thrust was to ask EPA to delay regulating GHGs and the Tailoring Rule  General Comments

– comments expressing general support and opposition to regulating GHGs and the Tailoring Rule  Form Letter #

– comments submitted by more than one Individual or organization; each such form letter is assigned a number  Unique Comment

– contains comments not generally included in the “Extension,” “General,” and “Form Letter #” comments This classification system was used to identify substantially- similar comments and themes, although many Individual comments could have been assigned more than one of the “letter ty pe” classifications. The third column presents the organization that submitted each comment. In instances where an Individual has signed his or her name to a comment letter but no organization is indicated, the “organization” is listed as “ Individual .” In cases where a comment was received and not signed by an Individual or organization, this column is blank. Exampl es of some of the Form Letters received and listed in Appendix A are included in Appendix B.Draft – Do Not Cite or Quote April 22 , 2010



### A - 2 

## Appendix A: List of Public Submissions on the Proposed Tailoring Rule Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0013 General Comment Environmental Inspector, Division for Air Quality EPA -HQ - OAR- 2009 - 0517 - 0014 General Comment Murphy Oil Corporation EPA -HQ - OAR- 2009 - 0517 - 0015 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0019 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 0020 Form Letter 4 American Coolair Corporation EPA -HQ - OAR- 2009 - 0517 - 0021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0022 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 0023 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 0024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0025 Form Letter 4 DRT Manufacturing Co EPA -HQ - OAR- 2009 - 0517 - 0026 Form Letter 4 DRT Manufacturing Co EPA -HQ - OAR- 2009 - 0517 - 0027 Form Letter 4 D RT Manufacturing Co EPA -HQ - OAR- 2009 - 0517 - 0028 Form Letter 4 Belden Brick Company EPA -HQ - OAR- 2009 - 0517 - 0029 Form Letter 4 Yeager Machine EPA -HQ - OAR- 2009 - 0517 - 0030 Form Letter 4 Rosemount Analytical EPA -HQ - OAR- 2009 - 0517 - 0031 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0032 General Comment People of the Earth EPA -HQ - OAR- 2009 - 0517 - 0033 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0034 Form Letter 4 Ariel Corporation EPA -HQ - OAR- 2009 - 0517 - 0035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0036 General Comment EPA -HQ - OAR- 2009 - 0517 - 0037 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0038 Form Letter 4 Mestek, Inc. EPA -HQ - OAR- 2009 - 0517 - 0039 General Comment J&J Enterprises EPA -HQ - OAR- 2009 - 0517 - 0040 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0041 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0043 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0045 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 0046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0047 Form Letter 18 Individual

1 Examples of form letters are indexed and presented in Appendix B.Draft – Do Not Cite or Quote April 22 , 2010



### A - 3 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0048 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0049 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0052 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0055 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 0056 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0059 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0061 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0069 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0073 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0079 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 0080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0083 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0085 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 4 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0087 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0089 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0092 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0094 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0095 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 0099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0103 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0105 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0106 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0107 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0108 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0111 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0113 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 0114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0120 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0123 F orm Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 5 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0125 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 0128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0131 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0132 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0133 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0134 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0135 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0136 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0138 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0140 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0141 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0145 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0146 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0147 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0148 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0149 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0151 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0152 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0155 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0156 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 0157 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0159 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0161 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 6 Docket ID Letter Type 1 Organization EPA -HQ - O AR- 2009 - 0517 - 0162 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0163 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0164 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0165 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0166 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0167 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0168 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0169 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0170 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0171 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0172 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0173 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0174 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0175 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0176 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0177 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0178 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0179 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0180 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0181 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0183 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0184 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0185 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0186 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0187 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0189 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0191 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0193 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0196 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0198 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0199 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 7 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0203 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0204 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0205 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0206 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0207 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0208 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0209 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 021 0 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0211 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0212 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0215 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0217 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0218 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0219 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0220 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0221 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0222 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0224 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0225 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0226 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0227 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0228 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0229 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0230 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0231 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0232 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0233 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0234 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0235 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0236 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0237 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 8 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0238 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 02 39 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0240 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0241 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0242 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0243 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 0244 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0245 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0246 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0247 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0248 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 0249 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0250 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0251 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0252 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0254 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0255 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0256 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0257 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0258 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0259 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0260 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0261 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0262 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0263 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0264 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0265 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0266 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0267 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0 268 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0269 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0270 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0271 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0272 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 0273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0274 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0275 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 9 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0276 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0277 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0278 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0279 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0281 Form Letter 4 RoyOMartin EPA -HQ - OAR- 2009 - 0517 - 0282 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0283 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0284 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0285 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0286 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0287 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0288 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0289 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0290 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0291 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0292 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0293 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0294 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0295 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0296 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0297 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0 298 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0299 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0300 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0301 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0302 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 0303 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0305 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0306 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0307 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0308 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0309 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0310 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0312 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 0313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0314 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 10 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0315 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0316 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0317 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 0318 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0324 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0325 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0326 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0327 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0328 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0329 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0332 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 0333 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0335 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0336 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0337 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0338 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0339 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0342 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 0343 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0344 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0345 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0347 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0348 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0349 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0353 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 11 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0354 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0355 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0356 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0357 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0358 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0359 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0360 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0361 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0362 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0363 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0364 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0365 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0366 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 0367 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0368 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0369 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0370 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0372 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0374 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0376 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0377 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0378 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0379 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0380 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0381 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0383 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0384 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0385 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 0386 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0387 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0388 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0389 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0390 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0391 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 12 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0392 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0394 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0395 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0396 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0397 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0398 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0399 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0400 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 0401 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0402 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0403 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0404 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0405 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0406 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0407 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0408 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0409 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0410 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0411 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0414 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 0415 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0416 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0417 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0418 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0419 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0420 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0421 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0422 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0423 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0424 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0425 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0426 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0427 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0429 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 13 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0434 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0436 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0437 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0439 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0441 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0443 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 0444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0447 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0448 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 0449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0450 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0452 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0453 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0454 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0455 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0456 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0457 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0458 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0459 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0460 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0461 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0462 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0464 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0466 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0467 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 14 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0469 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0472 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0473 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0474 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0475 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0476 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0477 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0478 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0479 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0480 Unique Comment EPA -HQ - OAR- 2009 - 0517 - 0481 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0482 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 0483 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0486 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0488 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0489 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0490 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0491 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0492 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0493 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0494 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0495 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0496 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0497 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0498 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0499 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0500 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0501 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0502 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0503 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0504 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0505 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 15 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0506 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0507 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0508 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0509 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0510 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0511 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0512 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0513 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0514 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0515 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0516 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0517 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0518 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0519 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0520 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0521 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0522 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0523 Extension Interstate Natural Gas Association of America EPA -HQ - OAR- 2009 - 0517 - 0523.1 Extension Interstate Natural Gas Association of America EPA -HQ - OAR- 2009 - 0517 - 0 524 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0526 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0527 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0528 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 0529 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0530 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0531 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0532 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0533 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0534 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0535 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0536 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0537 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0538 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 0539 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0540 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0541 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 16 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0542 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0543 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 0544 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0545 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0546 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0547 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0548 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0549 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0550 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0551 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0552 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0553 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0554 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0555 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0556 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0557 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 0558 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0561 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0562 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0563 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0564 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0566 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0567 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 0568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0569 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0570 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0574 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0579 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 17 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0581 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0582 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0583 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0584 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0585 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0587 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0589 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0590 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0591 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 0592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0593 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0598 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0600 Unique Comment U.S. Climate Action Network EPA -HQ - OAR- 2009 - 0517 - 0601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0602 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0603 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0604 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0606 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0608 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0609 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0610 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 0611 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0612 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0613 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0614 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0615 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0617 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 18 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0619 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0620 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0624 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0625 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0628 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0629 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 0630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0631 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0632 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0633 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0634 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0637 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0638 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0640 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0643 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0644 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 0645 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0647 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0648 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0652 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0653 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0654 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0655 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 19 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0656 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0657 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0658 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 0659 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0660 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0661 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0662 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0663 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0664 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0665 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0666 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0667 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0669 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0672 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0674 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0676 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0677 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0678 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0679 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0680 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0681 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0682 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 068 3 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0684 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0685 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0686 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0687 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0688 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0689 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0690 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0691 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0692 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0693 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 20 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0694 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0695 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0696 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0697 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0701 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0705 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0706 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0707 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0711 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 07 12 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0716 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 0717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0718 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0719 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0720 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0721 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 0722 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0723 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0724 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0725 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0726 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0727 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0728 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0729 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0730 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0731 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 21 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0732 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0733 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0734 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0735 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0736 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0737 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0738 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0739 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0740 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0 741 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0742 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0743 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0744 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0745 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 0746 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0747 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0748 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0749 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0750 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0752 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0755 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 0756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0757 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0758 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0760 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 0761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0762 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0764 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0765 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0766 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0767 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0768 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0769 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 22 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0770 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0771 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0772 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0773 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0774 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 0775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0776 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0777 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0778 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0779 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0780 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0781 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0783 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0784 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0785 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0786 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0789 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0792 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0793 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0794 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0795 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0797 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0798 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 0799 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0800 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0805 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0806 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0807 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 23 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0808 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0809 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0810 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0811 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0813 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 0814 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0815 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0816 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0817 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0818 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0819 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0820 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0822 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0823 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0825 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0827 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 0828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0829 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0830 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0831 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0832 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0833 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0834 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0836 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0837 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0838 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0844 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0845 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 24 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0846 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0847 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0849 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0850 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0851 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0852 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0853 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0855 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 0857 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0858 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0861 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 0862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0868 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0869 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0877 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0878 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0879 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0880 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0881 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0882 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0883 Form Letter 18 Hughes Solar EnergyDraft – Do Not Cite or Quote April 22 , 2010



### A - 25 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0884 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0885 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0886 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0888 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0890 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0891 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0892 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0893 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0894 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0896 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0897 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0899 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0900 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0902 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0903 Form Letter 18 Ethos Environmental Inc. EPA -HQ - OAR- 2009 - 0517 - 0904 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0905 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0906 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0907 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0908 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0909 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0913 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0914 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 0915 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0917 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0918 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0919 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0920 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0921 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 26 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0922 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0924 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0927 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0928 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 0929 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0935 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0939 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0941 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0942 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0945 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0946 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0947 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0948 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0949 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0951 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0952 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0953 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0954 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0955 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0956 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0957 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 0958 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0959 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 27 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0960 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0961 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0962 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 0963 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0964 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0965 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0966 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0967 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0969 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0970 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0971 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0973 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0976 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0977 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0978 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 0980 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 098 2 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0983 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0985 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0986 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0987 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0989 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0990 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0991 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0993 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0996 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0997 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 28 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 0998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 0999 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1000 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1001 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1003 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1006 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1009 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10 11 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1012 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1014 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1015 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 1016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1017 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1020 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 1021 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1022 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1023 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1024 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1025 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1027 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1029 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1031 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1032 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1033 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1034 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1035 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 29 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1036 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1037 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1038 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1039 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 040 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1043 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1044 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1045 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1047 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1048 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1049 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1052 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1054 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 1055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1056 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1059 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 1060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1061 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1069 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1073 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 30 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 1074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1083 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 1084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1085 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1087 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1089 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1092 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1094 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1095 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1103 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1105 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1106 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1107 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 1108 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1111 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 31 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1120 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1122 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1123 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1125 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 1127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1131 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1132 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1133 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1134 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1135 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1136 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1138 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1140 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1141 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 1142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1145 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1146 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1147 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1148 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1149 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 32 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1151 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1152 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1155 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 1156 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1157 Extension National Association of Manufacturers EPA -HQ - OAR- 2009 - 0517 - 1158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1159 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1161 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1162 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1163 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1164 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1165 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1166 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1167 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1168 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1169 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 170 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1171 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1172 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1173 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1174 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1175 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1176 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1177 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1178 Form Letter 4 Fairmount Minerals EPA -HQ - OAR- 2009 - 0517 - 1179 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1180 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1181 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1183 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1184 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1185 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1186 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1187 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 33 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1189 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1191 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1193 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11 94 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1196 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1198 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 1199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1203 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 1204 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1205 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1206 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1207 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1208 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1209 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1210 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1211 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1212 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1215 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1217 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1218 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1219 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1220 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1221 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1222 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1224 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1225 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 34 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1226 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1227 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1228 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1229 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1230 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1231 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1232 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1233 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1234 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1235 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1236 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1237 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 1238 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1239 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1240 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1241 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1242 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 1243 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1244 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1245 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1246 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1247 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1248 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1249 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1250 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1251 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1252 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1254 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1255 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1256 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 1257 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1258 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1259 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1260 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1261 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1262 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1263 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 35 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1264 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1265 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1266 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 1267 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1268 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1269 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1270 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1271 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1272 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1274 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1275 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1276 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1277 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1278 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1279 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1280 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1281 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1282 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1283 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1284 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1285 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1286 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1287 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1288 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1289 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1290 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 1291 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1292 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1293 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1294 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1295 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1296 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1297 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1298 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1299 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1300 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1301 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 36 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1302 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1303 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1305 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1306 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1307 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1308 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1309 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 1310 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1312 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1315 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1316 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1317 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1318 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1324 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 1325 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1326 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1327 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1328 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1329 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1331 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1332 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1333 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1334 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1335 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1336 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1337 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1338 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 1339 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 37 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1342 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1343 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1344 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1345 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1347 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1348 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1349 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1353 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1354 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1355 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1356 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1357 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1358 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1359 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1360 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1361 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1362 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1363 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1364 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1365 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1366 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1367 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 1368 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1369 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1370 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1372 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 1373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1374 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1376 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1377 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 38 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1378 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1379 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1380 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1381 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1383 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1384 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1385 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1386 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1387 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1388 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1389 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1390 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1391 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1392 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1394 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1395 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1396 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1397 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1398 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1399 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1400 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1401 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1402 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1403 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1404 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1405 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1406 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1407 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1408 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1409 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1410 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1411 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1414 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1415 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 39 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1416 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1417 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1418 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1419 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1420 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 142 1 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1422 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1423 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1424 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1425 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1426 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1427 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1429 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1434 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1436 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1437 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1439 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1441 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1443 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1445 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1447 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1448 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 14 50 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1452 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1453 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 40 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1454 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 1455 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1456 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1457 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1458 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1459 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 1460 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1461 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1462 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1464 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1466 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1467 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1469 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1472 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1473 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1474 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1475 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1476 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1477 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1478 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 479 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1480 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1481 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1482 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1483 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1486 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1488 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1489 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1490 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1491 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 41 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1492 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1493 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 1494 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1495 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1496 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1497 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1498 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1499 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1500 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1501 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1502 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1503 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1504 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1505 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1506 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1507 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1508 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1509 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1510 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1511 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1512 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1513 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1514 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1515 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1516 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1517 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 1518 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1519 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1520 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1521 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1522 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1523 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1524 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1526 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1527 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1528 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1529 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 42 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1530 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1531 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1532 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1533 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1534 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1535 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1536 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 1537 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1538 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1539 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1540 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1541 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1542 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1543 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1544 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1545 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1546 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1547 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1548 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1549 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1550 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1551 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 1552 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1553 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1554 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1555 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1556 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1557 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1558 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1561 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1562 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1563 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1564 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 1566 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1567 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 43 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1569 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1570 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1574 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1579 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1581 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1582 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1583 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1584 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1585 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1587 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1589 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1590 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1591 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1593 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 1595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1598 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1599 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 1600 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1602 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1603 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1604 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1605 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 44 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1606 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1608 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1609 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1610 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1611 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1612 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1613 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1614 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1615 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1617 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1619 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1620 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1624 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1625 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1628 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 1629 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1631 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1632 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1633 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1634 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1637 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1638 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1640 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1643 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 45 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1644 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1645 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1647 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1648 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1652 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 1653 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1654 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1655 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1656 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1657 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 1658 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1659 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1660 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1661 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1662 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1663 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1664 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1665 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1666 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1668 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1669 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1672 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1673 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1674 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1676 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 167 7 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1678 Form Letter 18 Nonprofit EPA -HQ - OAR- 2009 - 0517 - 1679 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1680 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1681 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 46 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1682 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1683 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1684 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1685 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1686 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1687 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1688 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1689 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1690 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1691 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1692 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1693 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1694 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1695 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1696 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1697 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1701 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1705 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 170 6 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1707 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1711 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1712 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1716 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1718 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1719 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 47 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1720 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1721 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1722 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1723 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1724 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1725 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1727 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1728 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1729 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1730 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1731 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1732 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1733 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1734 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 173 5 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1736 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1737 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1738 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1739 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1740 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1741 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1742 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1743 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1744 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1745 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1746 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1747 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1748 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1750 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1752 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1755 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1757 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 48 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1758 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1760 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1762 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 764 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1765 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1766 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1767 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1768 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1769 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1770 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1771 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1772 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1773 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1774 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1776 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1777 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1778 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 1779 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1780 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1781 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1782 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1783 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 1784 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1785 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1786 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1789 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1792 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1793 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1794 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1795 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 49 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1797 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 1798 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1799 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1800 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1805 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1806 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1807 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 1808 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1809 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1810 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1811 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1812 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1813 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1814 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1815 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1816 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1817 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1819 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1820 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1822 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1823 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1825 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1827 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1829 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1830 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1831 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 1832 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1833 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 50 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1834 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1836 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1837 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1838 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1844 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1845 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1846 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1847 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1849 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1850 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 1851 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1852 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1853 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1855 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1857 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1858 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1865 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 1866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1868 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1869 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1871 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 51 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1875 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1877 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1878 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1879 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 1880 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1881 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1882 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1883 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1884 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1885 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1886 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1888 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1890 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1891 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1892 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1893 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1894 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1896 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1897 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1899 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1900 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1902 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1903 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1904 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1905 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1906 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1907 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1908 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 1909 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 52 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1913 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 1914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1915 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1917 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1918 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1919 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1920 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1921 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1922 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1924 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1927 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1928 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1929 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1935 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1939 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1941 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1942 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1944 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 1945 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1946 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1947 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 53 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1948 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1949 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1951 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1952 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1953 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1954 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1955 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1956 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1957 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1958 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1959 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1960 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1961 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1962 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1963 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1964 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1965 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1966 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1967 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1969 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1970 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1971 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1973 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1976 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1977 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1979 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1980 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1982 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1983 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1985 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 54 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 1986 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1987 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1989 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1990 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19 91 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1995 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 1996 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1997 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1999 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2000 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 2001 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2003 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2006 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2009 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2012 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2014 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2015 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2017 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2 020 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2021 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2022 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2023 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 55 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2024 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 2025 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2027 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2029 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2031 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2032 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2033 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2034 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 2035 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2036 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2037 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2038 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2039 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 2040 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2042 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2043 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2045 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2047 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2049 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2052 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2056 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2058 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 2059 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2061 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 56 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2069 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2073 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 2078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2083 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2085 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2087 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2089 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2092 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2094 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2095 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2097 Form Lett er 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2099 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 57 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2102 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2103 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2104 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2105 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2106 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 05 17 - 2107 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2108 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2111 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2112 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2119 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2120 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2123 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2125 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2126 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 2127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 213 1 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2132 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2133 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2134 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2135 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2136 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2137 Form Letter 17 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 58 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2138 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2139 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2140 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2141 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2142 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2143 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2144 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2146 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2147 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2148 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2149 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2151 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2152 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2156 Form Letter 4 ICOR International EPA -HQ - OAR- 2009 - 0517 - 2157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2158 Form Letter 17 Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2159 Form Letter 17 Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2160 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2161 General Comment Energy Farm Oregon EPA -HQ - OAR- 2009 - 0517 - 2162 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2163 Form Letter 17 Physicians for Social Responsibility; Union of Concerned Scientists EPA -HQ - OAR- 2009 - 0517 - 2164 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2165 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2166 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2167 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2168 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2169 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2 170 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2171 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2172 Form Letter 17 Individual/Physicians for Social ResponsibilityDraft – Do Not Cite or Quote April 22 , 2010



### A - 59 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2173 Form Letter 17 Phys icians for Social Responsibility; Union of Concerned Scientists EPA -HQ - OAR- 2009 - 0517 - 2174 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2175 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2176 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2177 Form L etter 17 Polarity Center of Salem EPA -HQ - OAR- 2009 - 0517 - 2178 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2180 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2182 Form Letter 17 Individual/Family Care Physicians EPA -HQ - OAR- 2009 - 0517 - 2183 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2184 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2185 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2186 Fo rm Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2187 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2188 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2189 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 2191 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2193 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2196 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2198 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2203 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2204 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2205 Form Letter 17 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 2206 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2207 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2209 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2210 Form Lett er 17 Individual/Physicians for SocialDraft – Do Not Cite or Quote April 22 , 2010



### A - 60 Docket ID Letter Type 1 Organization Responsibility EPA -HQ - OAR- 2009 - 0517 - 2211 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2212 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2213 Form Letter 17 Office for Catholic Social Justice Ministry EPA -HQ - OAR- 2009 - 0517 - 2214 Form Letter 17 Individual/Voting People Helping People EPA -HQ - OAR- 2009 - 0517 - 2215 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2217 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 22 18 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2219 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2220 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2221 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2222 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2223 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2225 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2226 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2227 Form Letter 17 Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2228 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2229 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2230 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2231 Form Letter 17 Individ ual EPA -HQ - OAR- 2009 - 0517 - 2232 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2233 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2234 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2235 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 2236 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2238 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2239 General Comment Environmental Crisi s Center EPA -HQ - OAR- 2009 - 0517 - 2240 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2241 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2242 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 20 09 - 0517 - 2243 Form Letter 17 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 61 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2244 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2245 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2246 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2247 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2248 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2249 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2250 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2251 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2252 General Comment Indivi dual/Unitarian Universalist Church EPA -HQ - OAR- 2009 - 0517 - 2253 Form Letter 17 Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2254 Form Letter 17 Individual/Mercer Island Peacemakers EPA -HQ - OAR- 2009 - 0517 - 2255 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2256 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2257 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2258 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2259 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2260 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2261 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2262 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2263 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2264 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2265 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2266 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2267 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2268 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2269 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2270 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2275 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2276 Form Letter 17 Individual/Williamsburg Climate Action Network EPA -HQ - OAR- 2009 - 0517 - 2277 Form Letter 17 Individual EPA -HQ - OAR- 2 009 - 0517 - 2278 Form Letter 17 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 62 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2279 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2280 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2281 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2282 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2283 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2284 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2285 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2286 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2287 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2288 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2289 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2290 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2291 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2292 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2293 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2294 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2295 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2296 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2297 General Comment EPA -HQ - OAR- 2009 - 0517 - 2298 Form Letter 17 EPA -HQ - OAR- 2009 - 0517 - 2299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2300 General Comment EPA -HQ - OAR- 2009 - 0517 - 2301 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2302 Form Letter 17 Individual/Physician s for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2303 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2305 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2306 Form Letter 17 Individual/Physicians for S ocial Responsibility EPA -HQ - OAR- 2009 - 0517 - 2307 General Comment Individual/Bridge to Life Recovery EPA -HQ - OAR- 2009 - 0517 - 2308 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2309 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2310 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2311 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2312 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2314 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2315 Form Letter 18Draft – Do Not Cite or Quote April 22 , 2010



### A - 63 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2316 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2317 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2318 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2319 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2320 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2321 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2322 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2323 Form Letter 17 University at Buffalo EPA -HQ - OAR- 2009 - 0517 - 2324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2325 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2326 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2327 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2328 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2329 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2330 Form Lett er 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2331 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2332 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2333 General Comment Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2334 General Comment ORT Americ a EPA -HQ - OAR- 2009 - 0517 - 2335 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2338 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2339 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 2340 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 2341 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2342 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2343 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2344 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2345 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2346 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2347 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2348 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2349 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2353 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 64 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2 354 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2356 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 2357 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2358 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 2359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2364 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2366 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2369 Unique Comment Red Cedar Gathering Company EPA -HQ - OAR- 2009 - 0517 - 2371 Unique Comment Veolia ES Waste -to - Energy EPA -HQ - OAR- 2009 - 0517 - 2372 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2373 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2374 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2375 Form Letter 17 Leighsure Services EPA -HQ - OAR- 2009 - 0517 - 2376 Form Letter 17 Citizens Climate Lobby EPA -HQ - OAR- 2009 - 0517 - 2377 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2 378 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2379 General Comment Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2380 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2382 F orm Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2383 Form Letter 17 Healing Muse EPA -HQ - OAR- 2009 - 0517 - 2384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2385 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2386 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2387 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 2388 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2389 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2390 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2391 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2392 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 65 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2394 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2395 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2396 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2397 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2398 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2399 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2400 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2401 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2402 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2403 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2404 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2405 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2406 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2407 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2408 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2409 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2410 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 241 1 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2414 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2415 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2416 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2417 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2418 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2419 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2420 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2421 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2422 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2424 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2425 Form Letter 17 Individual/Physicians for Social Responsibility EPA -HQ - OAR- 2009 - 0517 - 2426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2427 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2428 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2429 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 2430 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 66 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2434 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2436 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2437 Unique Comment Sierra Research EPA -HQ - OAR- 2009 - 0517 - 2438 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2439 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2441 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2444 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2446 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2447 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2448 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2449 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2450 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2451 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2452 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2453 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2454 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 2455 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2457 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2459 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 2460 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2461 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2462 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2464 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2465 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2466 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2467 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2468 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2469 F orm Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 67 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2470 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2471 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2472 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2473 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 2474 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2475 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2476 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2477 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2478 Form Letter 13 Individual EPA -HQ - O AR- 2009 - 0517 - 2479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2480 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2483 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 2484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2485 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2486 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2487 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2488 Form Letter 1 7 Individual EPA -HQ - OAR- 2009 - 0517 - 2489 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2490 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2491 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2492 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2493 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2494 General Comment Giotto USA, LLC EPA -HQ - OAR- 2009 - 0517 - 2495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2497 Form Letter 17 Individual EPA -HQ - OAR- 200 9 - 0517 - 2498 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2501 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2502 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 2503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2504 Unique Comment Florida Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 2505 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2506 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2507 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 68 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2508 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2510 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2511 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2512 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2513 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2514 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2515 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2516 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2517 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2518 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2519 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2520 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2521 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2523 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2526 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2527 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2528 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2529 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2530 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2532 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2534 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 2536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2537 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2538 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2540 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2542 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2544 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2546 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2548 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2550 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2552 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2555 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2560 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2562 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 69 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2567 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2569 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 2570 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2571 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 2572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2574 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 257 5 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2579 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2581 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2582 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2583 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2584 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2585 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2587 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2589 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2590 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2591 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2593 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2598 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2599 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2600 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2602 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2603 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 70 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 26 04 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2606 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2608 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 2609 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2610 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2611 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2612 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2613 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 2614 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2615 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2617 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2619 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2620 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2624 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2625 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2628 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2629 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2631 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2632 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 26 33 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2634 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2637 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 2638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2640 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2641 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 71 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2642 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2643 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2644 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 2645 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2647 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2648 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2649 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2652 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2653 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2655 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2656 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2658 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2659 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2660 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2661 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2662 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2663 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2664 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2665 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2666 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2667 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 2668 Form Letter 18 Individual/Salem Audubon Society EPA -HQ - OAR- 2009 - 0517 - 2669 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2672 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2673 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2674 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2676 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2677 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2678 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2679 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 72 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2680 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2681 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2682 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2683 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2684 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2685 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2686 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2687 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2688 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2689 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2690 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2691 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2692 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2693 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2694 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2695 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2696 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2697 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2700 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2701 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 270 5 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2706 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2707 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2711 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2712 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2716 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2717 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 73 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2718 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2719 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2720 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2721 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2722 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2723 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2724 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2725 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2726 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2727 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2728 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2729 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2730 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2731 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2733 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 27 34 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2735 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2737 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2738 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 2739 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2740 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2741 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2742 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2743 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 2744 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2745 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2746 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2747 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2748 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2750 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2751 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 2752 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2755 Form Letter 6 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 74 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2757 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2758 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2760 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2762 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 276 3 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2764 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2765 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2766 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2767 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2768 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2769 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2770 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2771 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2772 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 2773 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2774 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2776 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2777 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2778 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2779 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2780 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2781 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2782 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2783 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2784 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2785 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2786 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2789 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2792 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2793 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 75 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2794 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2795 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2797 Unique Comment Texas Commission on Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 2798 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2799 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2800 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2805 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2806 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2807 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2808 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2809 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2810 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2811 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2813 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2814 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2815 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 2816 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2817 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2818 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2819 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2820 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 2821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2822 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2823 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2825 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 2826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2827 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2829 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2830 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2831 Unique Comment Merrion Oil and GasDraft – Do Not Cite or Quote April 22 , 2010



### A - 76 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2832 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2833 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2834 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 2835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2836 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2837 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2838 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2844 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 2845 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2846 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2847 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2849 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2850 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2851 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2852 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2853 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2855 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2857 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2858 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2863 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 2864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2868 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2869 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 77 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2873 Form Letter 6 Individ ual EPA -HQ - OAR- 2009 - 0517 - 2874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2877 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2878 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 2879 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2880 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2881 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2882 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2883 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2884 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2885 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2886 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2 888 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2890 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2891 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2892 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 2893 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2894 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2896 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2897 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 2898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2899 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2900 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2902 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2903 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2904 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2905 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2906 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2907 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 78 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2908 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2909 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2912 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2913 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2915 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 29 17 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2918 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2919 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2920 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2921 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 2922 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2924 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 2925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2926 Form Letter 18 Trustee Monmouth C ounty Audubon Society EPA -HQ - OAR- 2009 - 0517 - 2927 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2928 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2929 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2935 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 2936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2939 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2941 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2942 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2945 Form Letter 18 Indivi dualDraft – Do Not Cite or Quote April 22 , 2010



### A - 79 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2946 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2947 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2948 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2949 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2951 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2952 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2953 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2954 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2955 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2956 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2957 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2958 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2959 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2960 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2961 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2962 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2963 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2964 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2965 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2966 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2967 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2969 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 2970 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2971 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2973 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2976 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2977 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2978 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2979 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2980 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2982 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2983 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 80 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 2984 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2985 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2987 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 2989 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2990 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2991 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2993 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2996 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2997 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 2998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 2999 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3000 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3001 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3003 Unique Comment University of California EPA -HQ - OAR- 2009 - 0517 - 3004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3009 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3012 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3014 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3015 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3017 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 3018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3020 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3021 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 81 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3022 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3023 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3024 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3025 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3027 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3029 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3031 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3032 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3033 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3034 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3035 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3036 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 3037 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3038 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3039 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3040 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3045 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3047 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3048 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3052 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3056 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3059 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 82 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 306 1 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3069 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3073 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3083 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3085 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3087 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3089 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 30 90 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3092 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3094 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 3095 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3097 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 83 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3099 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 3100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3103 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3105 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3106 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3107 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3108 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3111 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3 119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3120 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3123 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 3124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3125 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3131 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3132 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3133 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 3134 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3135 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 84 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3136 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3138 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 3139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3140 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3141 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3145 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3146 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3147 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3148 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3149 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3151 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3152 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 3153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3155 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3156 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3157 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 3158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3159 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3161 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3162 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 3163 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3164 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3165 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3166 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3167 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 3168 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3169 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3170 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3171 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3172 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3173 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 85 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3174 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3175 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3176 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3177 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3178 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3179 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3180 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3181 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 3182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3183 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3184 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3185 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3186 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3187 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3189 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3191 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 3192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3193 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3196 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3198 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3204 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3205 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 3206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3207 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3208 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3209 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3210 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3211 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 86 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3212 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3215 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3217 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3218 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3219 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3220 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3221 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3222 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3224 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3225 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3226 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3227 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3228 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3229 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3230 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3231 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3232 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3233 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3234 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 3235 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3236 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3237 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3239 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3240 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3242 Form Letter 13 Individua EPA -HQ - OAR- 2009 - 0517 - 3243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3244 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3245 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3246 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3247 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3248 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3249 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 87 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3250 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3251 Form Letter 4 Individual EPA -HQ - OAR- 2009 - 0517 - 3252 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3254 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3255 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3256 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3257 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3258 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 32 59 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3260 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3262 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3263 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 3264 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3265 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3267 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3268 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3269 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3270 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3271 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3272 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3273 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 3274 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3275 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3277 Unique Comment Center for Individual Freedom EPA -HQ - OAR- 2009 - 05 17 - 3278 Unique Comment Kentucky Division for Air quality EPA -HQ - OAR- 2009 - 0517 - 3279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3282 Unique Com ment Indiana Cast Metals Association EPA -HQ - OAR- 2009 - 0517 - 3283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3284 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3286 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3287 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 88 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3288 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3290 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3291 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 3292 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3293 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3294 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3295 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3296 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3297 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3298 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3299 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3300 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3301 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3302 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3303 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3305 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3306 Unique Comment Savannah River Nuclear Solutions, LLC EPA -HQ - OAR- 2009 - 0517 - 3307 Unique Comment Florida Electric Power Coordinating Group EPA -HQ - OAR- 2009 - 0517 - 3308 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3309 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3310 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3311 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3312 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3314 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3317 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3318 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3319 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 3320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3323 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3324 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 89 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3325 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3326 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3327 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3329 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3330 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3331 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3332 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3333 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3335 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3336 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3337 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3338 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3340 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3341 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3342 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3343 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 3344 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3345 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3348 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3349 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3353 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3354 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3355 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3356 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3357 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 3358 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3359 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3360 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3362 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 90 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3363 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3364 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3365 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3366 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3367 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3368 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3369 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3370 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3374 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3376 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3377 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3380 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3381 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3382 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3384 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3385 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3387 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3388 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3389 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3390 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3391 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3393 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3395 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3396 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3398 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3399 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3400 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 91 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3401 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3403 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 34 06 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3407 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3408 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3409 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3410 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 3411 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3414 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3415 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3416 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 3417 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3418 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3419 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3420 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3421 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3422 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3423 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3424 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3425 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3426 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3427 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3429 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3430 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3431 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3432 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3435 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3436 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3437 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3439 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 92 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3440 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 3441 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3447 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3448 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3450 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 3451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3452 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3453 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3454 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3455 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3456 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3457 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3459 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3460 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3461 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3463 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3464 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3467 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3468 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3469 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3470 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3471 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3472 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3474 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3475 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3476 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3477 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 93 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3478 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3479 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3480 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3481 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3482 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3483 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3488 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3489 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3491 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3492 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3493 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3494 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3495 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3496 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3497 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 3498 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3499 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3500 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3501 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3502 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3503 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 3504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3508 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3509 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3510 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3511 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3512 Unique Comment Caterpillar Inc. and Solar Turbines, Inc. EPA -HQ - OAR- 2009 - 0517 - 3513 Unique Comment Mississippi Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 3514 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 94 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3515 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3516 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3517 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3518 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3519 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3520 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3521 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 3522 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3523 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3524 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3526 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 3527 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3529 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3530 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3531 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3532 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3533 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 3534 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 3535 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3536 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3538 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3539 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3540 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 3541 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3542 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3544 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3545 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 3546 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3547 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3548 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3549 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3550 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3551 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3552 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 95 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3553 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3555 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3556 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3557 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3560 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3561 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3563 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3564 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 35 65 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3567 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3569 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 3570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3571 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3572 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3573 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3577 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3578 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3579 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3580 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3581 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3582 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3584 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3586 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3588 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3 589 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3590 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 96 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3591 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3598 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 3599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3600 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3607 Extension Tennessee Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 3617 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3618 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3620 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3621 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3622 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 362 3 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3624 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3625 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3626 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3627 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 3628 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3629 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3630 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3631 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3632 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 3633 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3634 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3635 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3636 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3637 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3638 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3640 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3643 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 97 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3644 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3645 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3646 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3648 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3649 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3650 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3651 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3 652 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3653 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3654 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3655 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3656 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 3657 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3658 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3659 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3660 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3661 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3662 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3663 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3664 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3665 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3666 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 3667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3668 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3669 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3670 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3671 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3672 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3673 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3674 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3676 F orm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3677 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3678 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3680 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 3681 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 98 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3682 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3683 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3684 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3685 Form Letter 13 Individual EPA -HQ - O AR- 2009 - 0517 - 3686 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3687 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3688 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3689 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3690 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3691 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3692 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3693 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3694 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3695 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3697 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3701 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3703 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3704 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3705 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 37 06 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3707 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3708 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3709 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3710 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 3711 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3713 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3714 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3715 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3716 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3717 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3718 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3719 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3720 Unique Comment National Telecommunications Safety PanelDraft – Do Not Cite or Quote April 22 , 2010



### A - 99 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3721 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3722 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3723 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3724 Form Letter 13 Individual EPA -HQ - O AR- 2009 - 0517 - 3725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3726 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3728 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3729 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3730 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3731 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3733 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3734 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3735 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3736 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3737 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3738 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3739 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3740 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3741 Extension Greenville Chamber EPA -HQ - OAR- 2009 - 0517 - 3742 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3743 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 3744 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3745 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3746 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3747 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3748 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3749 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3750 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3751 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3752 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3753 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3754 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3755 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3756 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3757 Unique Comment Ad Hoc Coalition of Small Business Refiners EPA -HQ - OAR- 2 009 - 0517 - 3758 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 100 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3760 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3762 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 3763 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3764 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3765 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3766 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3767 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3768 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3769 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3770 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3771 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3772 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3773 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3774 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3775 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3776 Form Letter 13 Individual/Solar Nation EPA -HQ - OAR- 2009 - 0517 - 3777 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3779 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3780 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3781 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 3782 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3783 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3784 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3785 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3786 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3788 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3789 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3790 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3791 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3792 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3793 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3794 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3795 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3796 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 101 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3798 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3799 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3800 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3801 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3802 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3803 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3804 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3805 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3806 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3807 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3808 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3810 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3811 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3813 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3815 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3816 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3817 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3819 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3820 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3822 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3823 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3825 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3827 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3828 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3829 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 3830 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3831 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3832 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3833 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3834 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 102 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3835 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3837 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3838 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3839 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3840 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3841 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3842 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3843 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3844 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3846 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3848 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3849 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3850 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3851 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3852 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3853 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 385 4 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3855 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3856 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3857 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3858 Unique Comment West Virginia Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 3859 Extension Highway Service Ventures, Inc. EPA -HQ - OAR- 2009 - 0517 - 3860 Unique Comment Vertex Consulting, Inc. EPA -HQ - OAR- 2009 - 0517 - 3861 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3862 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3863 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3864 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3865 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3866 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3867 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3868 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3869 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3870 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3871 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3872 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 103 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3873 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3874 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3875 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3876 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3877 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3878 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3879 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3880 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3881 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3884 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3886 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 3887 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3888 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3889 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3890 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3891 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3893 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3894 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3895 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3896 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3897 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3900 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 3901 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3902 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3903 General Comment ID Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 3904 General Comment ID Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 3905 General Comment ID Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 3906 Extension Idaho Associatied General Contractors EPA -HQ - OAR- 2009 - 0517 - 3907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3908 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 104 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3909 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3910 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3911 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3912 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3914 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3915 Unique Comment OK Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 3916 Unique Comment IA Department of Natural Resources EPA -HQ - OAR- 2009 - 0517 - 3917 Unique Comment International Dairy Foods Association EPA -HQ - OAR- 2009 - 0517 - 3918 Unique Comment CARB EPA -HQ - OAR- 2009 - 0517 - 3919 Unique Comment City of Seattle EPA -HQ - OAR- 2009 - 0517 - 3920 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3921 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3922 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3923 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 3924 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3925 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3926 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3927 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3929 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3930 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3931 Form Letter 13 Individual/Clean Air Coalition of Western New York EPA -HQ - OAR- 2009 - 0517 - 3932 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3933 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3935 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3936 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3937 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3938 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3939 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3941 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3943 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3944 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 3945 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 105 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3946 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3947 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3948 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3949 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3953 Unique Comment American Farm Bureau Federation EPA -HQ - OAR- 2009 - 0517 - 3954 Unique Comment Holliday Environmental Services, Inc. EPA -HQ - OAR- 2009 - 0517 - 3955 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3956 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3957 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3958 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3959 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3960 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3961 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3962 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3963 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3964 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3965 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3966 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3967 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 396 8 Unique Comment Ad Hoc Coalition of Small Business Refiners EPA -HQ - OAR- 2009 - 0517 - 3969 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3970 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3971 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3972 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 3973 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3974 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3975 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3976 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3977 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3978 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3979 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3980 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3981 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3982 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3983 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 106 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 3984 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3985 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3986 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3987 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3988 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3989 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3990 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 3992 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3993 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3994 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3995 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3996 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 3997 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 3998 Unique Comment Engine Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 3999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4000 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4001 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4003 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4006 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4009 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4012 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4014 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4015 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4018 Extension Associated Builders and Contractors, Inc. EPA -HQ - OAR- 2009 - 0517 - 4019 Unique Comment AL Department of Environmental Management EPA -HQ - OAR- 2009 - 0517 - 4020 Unique Comment The Aluminum Association, Inc.Draft – Do Not Cite or Quote April 22 , 2010



### A - 107 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4021 Extension Associated Food Stores, Inc. EPA -HQ - OAR- 2009 - 0517 - 4022 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4023 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4024 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4025 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4026 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4027 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 40 28 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4029 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4030 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4031 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4032 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 4033 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4034 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4035 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4036 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4037 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 4038 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4039 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4040 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4042 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4045 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4047 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 4048 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4049 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4052 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4056 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4058 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 108 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4059 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4061 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 4062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4063 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4066 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4069 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4070 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4071 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 4072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4073 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4077 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4078 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4079 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4081 F orm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4082 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4083 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4084 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4085 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 4086 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4087 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4088 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4089 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4090 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4091 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4092 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4094 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4095 Unique Comment National Pet rochemical and Refiners Association EPA -HQ - OAR- 2009 - 0517 - 4096 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 109 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4103 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4104 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4105 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4106 Unique Comment BP EPA -HQ - OAR- 2009 - 0517 - 4107 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4108 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4109 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 4110 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4111 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4112 Unique Comment Calgon Carbon Corp. EPA -HQ - OAR- 2009 - 0517 - 4113 Unique Comment Carlisle Transportation EPA -HQ - OAR- 2009 - 0 517 - 4114 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4116 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4118 Unique Comment American Petroleum Institute EPA -HQ - OAR- 2009 - 0517 - 4119 Unique Comment National Grain and Feed Association EPA -HQ - OAR- 2009 - 0517 - 4120 Unique Comment El Paso Corporation EPA -HQ - OAR- 2009 - 0517 - 4121 Form Letter 17 Individual EPA -HQ - OAR- 2009 - 0517 - 4122 Unique Comment Choptank Ele ctric Cooperative EPA -HQ - OAR- 2009 - 0517 - 4123 Extension Idaho Association of Commerce and Industry EPA -HQ - OAR- 2009 - 0517 - 4124 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4125 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4128 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4129 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4130 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4131 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4132 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4133 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4134 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 110 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4135 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4136 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4137 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4138 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4139 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4140 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4 141 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4142 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4143 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4144 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4145 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 4146 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4147 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4148 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4149 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4152 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4153 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4154 Unique Comment New Jersey Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 4155 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4157 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4158 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4159 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4160 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4161 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4162 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4163 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4164 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4165 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4166 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4167 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4168 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4170 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4171 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4172 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 111 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4173 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4 174 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4175 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4176 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4177 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4178 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 4179 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4180 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4181 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4182 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4183 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4184 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4185 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4186 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4187 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4188 Form Letter 14 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4189 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4191 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4192 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4193 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 4194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4197 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4198 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4202 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 4203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4204 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4206 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4207 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4208 Unique Comment First Energy/Cleveland Electric Il luminating Company EPA -HQ - OAR- 2009 - 0517 - 4209 Unique Comment Missouri State Senator EPA -HQ - OAR- 2009 - 0517 - 4210 Unique Comment North Dakota Public ServiceDraft – Do Not Cite or Quote April 22 , 2010



### A - 112 Docket ID Letter Type 1 Organization Commission EPA -HQ - OAR- 2009 - 0517 - 4 211 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4212 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4213 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4214 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4215 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 4216 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4217 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4218 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4219 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4220 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4221 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4222 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4223 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4224 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4225 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4226 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4227 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4228 Unique Comment First Energy/Pennsylvania Power Company EPA -HQ - OAR- 2009 - 0517 - 4229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4231 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4232 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4233 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4234 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4235 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4236 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4237 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4238 Unique Comment New Hampshire Department of Environmental Services EPA -HQ - OAR- 2009 - 0517 - 4239 Unique Comment Northeast States for Coordinated Air Use Management EPA -HQ - OAR- 2009 - 0517 - 4240 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4241 Unique Comment Armstrong World Industries, Inc. EPA -HQ - OAR- 2009 - 0517 - 4242 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4243 Unique Comment Council of Industrial Boiler Owners EPA -HQ - OAR- 2009 - 0517 - 4244 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4245 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4246 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 113 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4247 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4248 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4249 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4251 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 4252 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4253 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4255 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4256 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4257 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4258 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4259 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4260 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4261 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4262 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4263 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4264 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4265 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 4266 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4267 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4268 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4269 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4270 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4272 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4273 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4274 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4275 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4276 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4277 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4278 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4279 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4280 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4281 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4282 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4284 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 114 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4285 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4286 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4287 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4288 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4289 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4291 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4292 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4293 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4294 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4295 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4296 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4297 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4298 Unique Comment Latham & Watkins, LLP on behalf of The National Climate Coalition EPA -HQ - OAR- 2009 - 0517 - 4299 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4300 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4301 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4302 Unique Comment Texas Cotton Ginner's Association EPA -HQ - OAR- 2009 - 0517 - 4303 Form Letter 4 Individual/Emerson Climate Technologies EPA -HQ - OAR- 2009 - 0517 - 4304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4305 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4306 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4307 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4308 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4309 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4310 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4312 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4313 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4316 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 43 17 Unique Comment Newmount Mining Corporation EPA -HQ - OAR- 2009 - 0517 - 4318 Unique Comment Prince George Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 4319 Unique Comment Progress Energy EPA -HQ - OAR- 2009 - 0517 - 4320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4321 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 115 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4324 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4325 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 4326 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4327 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4328 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4329 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4331 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4335 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 4336 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4337 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4338 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4339 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4340 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4341 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4342 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4344 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4345 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4346 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4347 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4348 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4349 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 4350 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4351 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4352 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4353 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4354 Form Letter 13 Individual EPA -HQ - O AR- 2009 - 0517 - 4355 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4357 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4358 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4359 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 116 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4361 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4362 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4363 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4364 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4365 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4366 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4367 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4368 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4369 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4370 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4371 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4372 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4373 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 43 74 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4376 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 4377 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4378 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 4379 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4380 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4381 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4384 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4385 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4388 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 4389 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4390 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4391 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4392 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4395 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4396 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4397 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 117 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4398 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4399 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4401 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4404 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4405 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4407 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 4408 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4409 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4411 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4412 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4413 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4414 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4415 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4417 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4418 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4419 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4420 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4421 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4422 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4424 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4425 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4426 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 4427 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4429 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4434 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4435 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 118 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4436 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4439 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4440 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4441 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4442 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4443 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4444 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4446 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4447 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4449 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4450 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 445 1 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4452 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4453 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4454 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4455 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4457 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4459 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4460 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 4461 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4462 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4463 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4464 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4465 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4466 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4467 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4468 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4469 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4470 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4471 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4473 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 119 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4476 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4477 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4478 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4479 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 05 17 - 4480 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4481 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4482 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4483 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4484 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4485 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4486 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4487 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4488 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4489 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4490 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4491 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4492 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4493 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4494 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4496 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4499 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4500 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4501 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4502 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4503 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 45 04 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4505 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4506 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4507 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4508 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4511 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 120 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4512 Unique Comment North Dakota Department of Health EPA -HQ - OAR- 2009 - 0517 - 4513 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4514 Unique Comment First Energy on behalf of Pennsylvania Electric Company EPA -HQ - OAR- 2009 - 0517 - 4515 Unique Comment Interstate Natural Gas Association of America EPA -HQ - OAR- 2009 - 0517 - 4516 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4517 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4518 Unique Comment Center for Efficient Living EPA -HQ - OAR- 2009 - 0517 - 4519 Unique Comment Georgia Environmental Protection Division EPA -HQ - OAR- 2009 - 0517 - 4520 Form Letter 1 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 4521 Unique Comment South Carolina Department of Health and Environmental Control EPA -HQ - OAR- 2009 - 0517 - 4522 Unique Comment Southern Illinois Power Cooperative EPA -HQ - OAR- 2009 - 0517 - 4523 Unique Comment Shenandoah Valley Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 4524 Unique Comment Verizon Communications, Inc. EPA -HQ - OAR- 2009 - 0517 - 4525 Unique Comment First Energy on behalf of Toledo Edison Company EPA -HQ - OAR- 2009 - 0517 - 4526 Unique Comment Carbon Shrinks, LLC EPA -HQ - OAR- 2009 - 0517 - 4527 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4528 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4529 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4530 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4531 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4533 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4534 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4536 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4540 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4542 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4543 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4544 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4545 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4546 Form Le tter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 121 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4547 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4548 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4549 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4550 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 455 1 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4552 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4553 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4554 Unique Comment The Empire District Electric Company EPA -HQ - OAR- 2009 - 0517 - 4555 Unique Comment Growth Energy EPA -HQ - OAR- 2009 - 0517 - 4556 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4557 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4559 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4560 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4564 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 4565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4567 Unique Comment Baker Botts LLP on behalf of Class of '85 Regulatory Response Group EPA -HQ - OAR- 2009 - 0517 - 4568 Form Letter 17 Individual EP A -HQ - OAR- 2009 - 0517 - 4569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4570 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4571 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4572 Unique Comment Pennsylvania Farm Bureau EPA -HQ - OAR- 2009 - 0517 - 4573 Form L etter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4574 Unique Comment Bullseye Carpet Cleaning EPA -HQ - OAR- 2009 - 0517 - 4575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4577 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4578 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4581 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4582 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4584 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 1 22 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4585 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4586 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4587 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4588 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4589 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 4590 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4591 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4592 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4594 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4595 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4596 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 45 97 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4598 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4599 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4600 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4601 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 4602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4603 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4605 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4606 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4607 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4609 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4610 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4611 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4612 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4613 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4614 Form Letter 8 Individual EPA -HQ - OAR- 2009 - 0517 - 4615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4617 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4618 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4619 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4620 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4621 F orm Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4622 Form Letter 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 123 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4623 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4624 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4625 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 05 17 - 4626 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4627 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4628 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4629 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4630 Unique Comment Lafarge North America Inc. EPA -HQ - OAR- 2009 - 0517 - 4631 Extension FL House of Representatives EPA -HQ - OAR- 2009 - 0517 - 4632 Unique Comment Ohio Cast Metals Association EPA -HQ - OAR- 2009 - 0517 - 4633 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4634 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4635 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4636 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4637 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4638 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4639 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4640 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4641 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4642 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4643 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4644 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4645 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4646 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4647 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4648 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4649 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4650 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4651 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4652 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4653 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 465 4 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4655 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4656 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4657 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4658 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 4659 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4660 Form Letter 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 124 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4661 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4662 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4663 Form Letter 14 Individual EPA -H Q - OAR- 2009 - 0517 - 4664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4666 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4667 Unique Comment Weyerhaeuser Company EPA -HQ - OAR- 2009 - 0517 - 4668 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4669 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4670 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4671 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4673 F orm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4674 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4676 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4677 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 4678 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4679 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4680 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4681 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4682 Form Letter 14 Individual EPA -HQ - O AR- 2009 - 0517 - 4683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4684 Unique Comment National Federation of Independent Business EPA -HQ - OAR- 2009 - 0517 - 4685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4686 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 4687 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4688 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4689 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4690 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4691 Unique Comment Interstate Natural G as Association of America EPA -HQ - OAR- 2009 - 0517 - 4692 Unique Comment Los Alamos National Laboratory EPA -HQ - OAR- 2009 - 0517 - 4693 Unique Comment Institute for Liberty EPA -HQ - OAR- 2009 - 0517 - 4694 Unique Comment Puget Sound Clean Air Agency EPA -HQ - OAR- 2009 - 0517 - 4695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4697 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 125 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4698 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4699 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4700 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4701 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4702 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4703 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4704 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4707 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4708 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4711 Form Letter 8 Individual EPA -HQ - OAR- 2009 - 0517 - 4712 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4713 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4714 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4715 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4716 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4717 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4718 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 471 9 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4720 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4721 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4723 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 4724 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4725 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4727 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4728 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4729 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4730 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4731 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4732 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4733 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4734 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4735 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 126 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4736 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4737 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4738 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4739 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4740 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4741 Unique Comment Nucor Corporation EPA -HQ - OAR- 2009 - 0517 - 4742 Unique Comment Asst. Attny Gen., Attorney General of Commonwealth of MA; Attorney General, State of CT EPA -HQ - OAR- 2009 - 0517 - 4743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4744 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4745 Unique Comment Montana Dakota Utilities Co. EPA -HQ - OAR- 2009 - 0517 - 47 46 Unique Comment California Wastewater Climate Change Group EPA -HQ - OAR- 2009 - 0517 - 4747 Unique Comment Acting Deputy Assistant Secretary of the Navy EPA -HQ - OAR- 2009 - 0517 - 4748 General Comment Self Study Systems Publishing/Teaching and Training Company EPA -HQ - OAR- 2009 - 0517 - 4749 Unique Comment Dominion Resources Services, Inc. EPA -HQ - OAR- 2009 - 0517 - 4750 Form Letter 5 Americans for Prosperity EPA -HQ - OAR- 2009 - 0517 - 4751 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4752 Form Letter 3 Individual EPA -HQ - OAR- 2 009 - 0517 - 4753 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4754 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4755 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4757 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 4758 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4759 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4760 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4761 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4762 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4763 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4764 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4765 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4766 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4767 Unique Comment South Coast Air Quality Management District EPA -HQ - OAR- 2009 - 0517 - 4768 Extension Arkansas Environmental Federation EPA -HQ - OAR- 2009 - 0517 - 4769 Form Letter 1 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 127 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4770 Unique Comment Duke Energy Corporation EPA -HQ - OAR- 2009 - 05 17 - 4771 Unique Comment Pilkington North America, Inc. EPA -HQ - OAR- 2009 - 0517 - 4772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4773 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 4774 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4776 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4777 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4778 Unique Comment Fond du Lac Band of Lake Superior Chippewa EPA -HQ - OAR- 2009 - 0517 - 4779 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4780 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4781 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4782 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4783 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4784 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4785 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4786 Unique Comment California Energy Commission EPA -HQ - OAR- 2009 - 0517 - 4787 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4788 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 4789 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4790 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4791 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4793 Form Letter 1 Individual EPA -HQ - O AR- 2009 - 0517 - 4794 Unique Comment Associated General Contractors of America EPA -HQ - OAR- 2009 - 0517 - 4795 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4796 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4797 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4798 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4800 Unique Comment South Coast Air Quality Management District EPA -HQ - OAR- 2009 - 0517 - 4801 Unique Comment American Marazzi Tile/Monarch Ceramic Tile EPA -HQ - OAR- 2009 - 0517 - 4802 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4803 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4804 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4805 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 128 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4806 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4807 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4808 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4809 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4810 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4811 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4812 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4815 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 48 16 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 4817 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4818 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4819 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4820 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 4821 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4823 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4824 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4825 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4826 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4827 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4828 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4829 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4830 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 4831 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4832 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4834 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4835 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4837 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4838 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4839 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4840 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4841 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4842 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4843 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 129 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4844 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4845 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4846 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4847 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4848 General Comment Individual/Aspire - EV.org EPA -HQ - OAR- 2009 - 0517 - 4849 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 4850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4851 Unique Comment Western Business Roundtable EPA -HQ - OAR- 2009 - 0517 - 4852 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4853 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4854 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4856 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4857 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4858 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4859 Unique Comment Aircraf Wheels & Brakes, Goodrich Corporation EPA -HQ - OAR- 2009 - 0517 - 4860 Unique Comment MA Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 4861 Unique Comment Bullseye Carpet Cleaning EPA -HQ - OAR- 2009 - 0517 - 4862 Unique Comment National Association of Manufacturers EPA -HQ - OAR- 2009 - 0517 - 4863 Unique Comment County Sanitation Districts of Los Angeles County EPA -HQ - OAR- 2009 - 0517 - 4864 Unique Comment NC Department of Environment and Natural Resources EPA -HQ - OAR- 2009 - 051 7 - 4865 Unique Comment Charleston Metro Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 4866 Unique Comment State of Ohio Environmental Protection Agency EPA -HQ - OAR- 2009 - 0517 - 4867 Unique Comment Office of Advocacy, Small Business Administration EPA -HQ - OAR- 2009 - 0517 - 4868 Unique Comment Montana Stockgrowers Association EPA -HQ - OAR- 2009 - 0517 - 4869 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4870 Unique Comment Texas Oil and Gas Association EPA -HQ - OAR- 2009 - 0517 - 4871 Unique Comment LA Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 4872 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4873 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4875 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4876 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 130 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4877 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4878 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4879 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 4880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4881 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4882 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4884 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4885 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4886 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4887 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4889 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4890 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 4891 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4893 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4894 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4895 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 4896 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4897 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4898 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4899 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4900 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4901 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4902 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4903 Unique Comment American Forest and Paper Association EPA -HQ - OAR- 2009 - 0517 - 4904 Unique Comment PNGC Power EP A -HQ - OAR- 2009 - 0517 - 4905 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4906 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4908 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4909 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 4910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4911 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4912 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4913 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4914 Form Lett er 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 131 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4917 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 49 19 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4920 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4921 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4922 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4923 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 4924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4925 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4926 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4927 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4929 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4930 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4931 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4932 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4933 Form Letter 14 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 4934 Unique Comment ADAGE LLC EPA -HQ - OAR- 2009 - 0517 - 4935 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4936 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4937 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4938 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 4939 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4941 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4942 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4943 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4944 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4946 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4947 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 051 7 - 4948 Unique Comment Environmental Planning Specialists, Inc. EPA -HQ - OAR- 2009 - 0517 - 4949 Unique Comment NV Division of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 4950 Unique Comment National Retail Federation EPA -HQ - OAR- 2009 - 0517 - 4951 Unique Comment DE Solid Waste AuthorityDraft – Do Not Cite or Quote April 22 , 2010



### A - 132 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 4952 Unique Comment Basin Electric Power Cooperative EPA -HQ - OAR- 2009 - 0517 - 4953 Extension The Chamber of Commerce of Southwest Indiana EPA -HQ - OAR- 2009 - 0517 - 4954 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4955 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4956 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4957 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4958 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4959 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4961 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4963 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4964 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4966 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4968 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4969 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4970 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4971 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4972 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4973 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4974 Form Le tter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4975 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4976 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4978 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 49 79 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4982 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4983 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 4984 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4985 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4986 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4987 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 4988 Unique Comment State of California EPA -HQ - OAR- 2009 - 0517 - 4989 Unique Comment State Air Regulatory Agenices of NV,Draft – Do Not Cite or Quote April 22 , 2010



### A - 133 Docket ID Letter Type 1 Organization MT, ND, SD, UT EPA -HQ - OAR- 2009 - 0517 - 4990 Unique Comment Compressed Gas Association EPA -HQ - OAR- 2009 - 0517 - 4991 Unique Comment J. M. Murphy and Company EPA -HQ - OAR- 2009 - 0517 - 4992 Unique Comment Old Dominion Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 4993 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4995 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4997 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 4998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 4999 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5000 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5001 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5002 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5003 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5004 Unique Comment Individual/American Trucking Associations/C.R. England, Inc.

EPA -HQ - OAR- 2009 - 0517 - 500 5 Unique Comment Independent Petroleum Association of America, International Association of Drilling Contractors, International Association of Geophysical Contractors, National Stripper Well Association, Petroleum Equipment Suppliers Association, US Oil & Gas Association, and other groups listed in letter EPA -HQ - OAR- 2009 - 0517 - 5006 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5007 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5008 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5010 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5011 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5012 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5014 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5015 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5016 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5018 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 501 9 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5020 Form Letter 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 134 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5021 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5022 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5023 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5025 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5026 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5027 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5028 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 5029 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5031 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5032 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5033 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 5034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5035 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5036 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5038 Unique Com ment National Rural Electric Cooperative

Association EPA -HQ - OAR- 2009 - 0517 - 5039 Unique Comment CO Department of Public Health and Environment EPA -HQ - OAR- 2009 - 0517 - 5040 Unique Comment Corn Refiners Association EPA -HQ - OAR- 2009 - 0517 - 5041 Unique Comment Asph alt Roofing Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 5042 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5045 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5046 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5047 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5048 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5049 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5050 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 5051 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5052 Unique Comment American Public Power Association EPA -HQ - OAR- 2009 - 0517 - 5053 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5054 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5055 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5056 Unique Comment Oklahoma Independent Petroleum AssociationDraft – Do Not Cite or Quote April 22 , 2010



### A - 135 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5057 Unique Comment PA Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 5058 Unique Comment America's Natural Gas Alliance EPA -HQ - OAR- 2009 - 0517 - 5059 Unique Comment Gas Processors Association EPA -HQ - OAR- 2009 - 0517 - 5060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5061 Unique Comment AR Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 5062 Uni que Comment American Meat Institute EPA -HQ - OAR- 2009 - 0517 - 5063 Unique Comment LA Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 5064 Unique Comment Eastern Municipal Water District EPA -HQ - OAR- 2009 - 0517 - 5065 Form Letter 4 Window and Door Manufac turers Association EPA -HQ - OAR- 2009 - 0517 - 5066 Unique Comment Safety -Kleen Systems, Inc. EPA -HQ - OAR- 2009 - 0517 - 5067 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5068 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5070 Unique Comment National Alliance of Forest Owners EPA -HQ - OAR- 2009 - 0517 - 5071 General Comment Cynthia Poten EPA -HQ - OAR- 2009 - 0517 - 5072 Unique Comment New Hampshire Precision Metal Fabricators EPA -HQ - OAR- 2009 - 0517 - 5073 Unique Comment Bric k Industry Association EPA -HQ - OAR- 2009 - 0517 - 5074 Unique Comment National Pork Producers Council EPA -HQ - OAR- 2009 - 0517 - 5075 Unique Comment INEOS Bio EPA -HQ - OAR- 2009 - 0517 - 5076 Extension State of Arkansas EPA -HQ - OAR- 2009 - 0517 - 5077 Unique Comment CARBO Ceramics EPA -HQ - OAR- 2009 - 0517 - 5078 Unique Comment Florida Power and Light EPA -HQ - OAR- 2009 - 0517 - 5079 Unique Comment The Clean Energy Group EPA -HQ - OAR- 2009 - 0517 - 5080 Unique Comment Southside Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 5081 Unique Comment CT Department of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 5082 Unique Comment Ameren Corporation EPA -HQ - OAR- 2009 - 0517 - 5083 Unique Comment Alliance of Automobile Manufacturers EPA -HQ - OAR- 2009 - 0517 - 5084 Unique Comment National Association of Clean Air Agencies EPA -HQ - OAR- 2009 - 0517 - 5085 Unique Comment Ohio Coal Association EPA -HQ - OAR- 2009 - 0517 - 5086 Unique Comment National Solid Wastes Management Association EPA -HQ - OAR- 2009 - 0517 - 5087 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5088 Unique Comment Capitol Hill Advocates, Inc. on behalf of Interlocking Concrete Pavement InstituteDraft – Do Not Cite or Quote April 22 , 2010



### A - 136 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5089 Unique Comment Craig Botetourt Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 5090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5091 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5093 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5094 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5095 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5096 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5097 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5098 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5099 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5100 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 510 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5102 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5103 Extension State of Arkansas EPA -HQ - OAR- 2009 - 0517 - 5104 Unique Comment National Association of Home Builders EPA -HQ - OAR- 2009 - 0517 - 5105 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5106 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5107 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5108 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5109 Unique Comment Large Public Power Council EPA -HQ - OAR- 20 09 - 0517 - 5110 Unique Comment United States Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 5111 Unique Comment National Environmental Development Association's Clean Air Project EPA -HQ - OAR- 2009 - 0517 - 5112 Unique Comment American Municipal Power, Inc. EPA -HQ - OAR- 2009 - 0517 - 5113 Unique Comment Edison Electric Institute EPA -HQ - OAR- 2009 - 0517 - 5114 Unique Comment Sunflower Electric Power Corporation EPA -HQ - OAR- 2009 - 0517 - 5115 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5116 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 5117 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5119 Form Letter 13 Individual

EPA -HQ - OAR- 2009 - 0517 - 5120 Unique Comment Steptoe & Johnson, LLP, Attorneys at Law on behalf of Society of Independent gasoline Marketers of America, National Association of Convenience Stores EPA -HQ - OAR- 2009 - 0517 - 5121 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 137 Docket ID Letter Type 1 Organization

EPA -HQ - OAR- 2009 - 0517 - 5122 Unique Comment Columbia Law School on behalf of Environmental Advocates, the New Jersey Enviro nmental Lobby, New Jersey Environmental Federation EPA -HQ - OAR- 2009 - 0517 - 5123 Unique Comment American Chemistry Council EPA -HQ - OAR- 2009 - 0517 - 5124 Unique Comment Valero Energy Corporation EPA -HQ - OAR- 2009 - 0517 - 5125 Unique Comment MidAmerican Energy Holding s Company EPA -HQ - OAR- 2009 - 0517 - 5126 Unique Comment Renewable Fuels Association EPA -HQ - OAR- 2009 - 0517 - 5127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5128 Unique Comment Rappahannock Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 5129 Unique Comment Comp etitive Enterprise Institute EPA -HQ - OAR- 2009 - 0517 - 5130 Unique Comment Dow Chemical EPA -HQ - OAR- 2009 - 0517 - 5131 Unique Comment Spectra Energy EPA -HQ - OAR- 2009 - 0517 - 5132 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5133 Unique Comment National Lime Associ ation EPA -HQ - OAR- 2009 - 0517 - 5134 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5135 Unique Comment Il linois Environmental Protection Agency EPA -HQ - OAR- 2009 - 0517 - 5136 Unique Comment Detroit Regional Chamber EPA -HQ - OAR- 2009 - 0517 - 5137 Unique Comment Lignite Energy Council EPA -HQ - OAR- 2009 - 0517 - 5138 Unique Comment Competitive Power Ventures Sentinel, LLC EPA -HQ - OAR- 2009 - 0517 - 5139 Unique Comment Center for Biological Diversity EPA -HQ - OAR- 2009 - 0517 - 5140 Unique Comment Baker Botts LLP on behalf of the Texas Industry Project EPA -HQ - OAR- 2009 - 0517 - 5141 Unique Comment Texas Instruments Incorporated EPA -HQ - OAR- 2009 - 0517 - 5142 Unique Comment Io wa Renewable Fuels Association EPA -HQ - OAR- 2009 - 0517 - 5143 Unique Comment Latham and Watkins, LLP on behalf of Semiconductor Industry Association EPA -HQ - OAR- 2009 - 0517 - 5144 Unique Comment First Energy on behalf of Metropolitan Edison Company EPA -HQ - OAR- 2009 - 0517 - 5145 Unique Comment National Mining Association EPA -HQ - OAR- 2009 - 0517 - 5146 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 5147 Unique Comment General Electric Company EPA -HQ - OAR- 2009 - 0517 - 5148 Unique Comment Freescale Semiconductor, Inc. EPA -HQ - OAR- 2009 - 0517 - 5149 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5150 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 51 51 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5152 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5153 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 138 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5154 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5155 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 5156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5158 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5160 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 5161 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5162 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5163 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5164 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5165 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5166 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5168 Unique Comment Il linois Farm Bureau EPA -HQ - OAR- 2009 - 0517 - 5169 Unique Comment Glass Packaging Institute EPA -HQ - OAR- 2009 - 0517 - 5170 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5171 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5172 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5173 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5174 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 5175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5176 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5177 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5178 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5179 Unique Comment Texa s Chemical Council and Texas Association of Manufacturers (respectively) EPA -HQ - OAR- 2009 - 0517 - 5180 Unique Comment Calpine Corporation

EPA -HQ - OAR- 2009 - 0517 - 5181 Unique Comment Air Permitting Forum, American Chemistry Council, American Coke and Coal Chemic als Institute, American Iron and Steel Institute, Corn Refiners Association, Institute of Shortening and Edible Oils, National Association of Manufactureres, National Oilseed Processors Association, Renewable Fuels Association EPA -HQ - OAR- 2009 - 0517 - 5182 Unique Comment Santee Cooper EPA -HQ - OAR- 2009 - 0517 - 5183 Unique Comment The Fertilizer InstituteDraft – Do Not Cite or Quote April 22 , 2010



### A - 139 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5184 Extension Salt Lake Chamber EPA -HQ - OAR- 2009 - 0517 - 5185 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5186 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5188 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5189 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5190 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5191 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5192 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5194 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5195 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5197 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5198 Unique Comment Il linois Environmental Protection Agency EPA -HQ - OAR- 2009 - 0517 - 5199 Unique Comment Clark, Thomas and Winters on behalf of Texas Pipeline Asso ciation EPA -HQ - OAR- 2009 - 0517 - 5200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5201 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5202 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5203 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5204 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5205 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5206 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5207 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5208 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5209 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5210 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5211 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5213 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 5214 Unique Comment National Cotton Ginners' Association EPA -HQ - OAR- 2009 - 0517 - 5215 Unique Comment Texas Department of Agriculture EPA -HQ - OAR- 2009 - 0517 - 5216 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5218 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5219 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5220 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 140 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5221 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5222 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5224 Unique Comment Rio Tinto EPA -HQ - OAR- 2009 - 0517 - 5225 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5226 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5227 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5228 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5229 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5230 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5231 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5234 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5235 Unique Comment Landmark Legal Foundation EPA -HQ - OAR- 2009 - 0517 - 5236 Unique Comment American Foundry Society EPA -HQ - OAR- 2009 - 0517 - 5237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5239 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5241 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5242 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5243 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5244 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5245 Unique Comment US Poultry and Egg Assocation, National Turkey Foundation, National Chicken Council EPA -HQ - OAR- 2009 - 0517 - 5246 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5247 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5249 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5250 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5251 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5252 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5253 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5254 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5255 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5257 Unique Comment Tri - State Generation andDraft – Do Not Cite or Quote April 22 , 2010



### A - 141 Docket ID Letter Type 1 Organization Transmission Association, Inc. EPA -HQ - OAR- 2009 - 0517 - 5258 Extension State Representative, District 13, Hillsborough, New Hampshire EPA -HQ - OAR- 2009 - 0517 - 5259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5261 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5262 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5264 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5265 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5266 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5267 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5268 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5269 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5270 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5271 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 5272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5274 Unique Comment WEST Associates EPA -HQ - OAR- 2009 - 0517 - 5275 Unique Comment Westlake Chemical Corporation EPA -HQ - OAR- 2009 - 0517 - 5276 Unique Com ment Republic Services EPA -HQ - OAR- 2009 - 0517 - 5277 Unique Comment ArcelorMittal USA, Inc. EPA -HQ - OAR- 2009 - 0517 - 5278 Unique Comment Baker Botts LLP on behalf of the BCCA Appeal Group EPA -HQ - OAR- 2009 - 0517 - 5279 Unique Comment Alexander and Baldwin, Inc. EPA -HQ - OAR- 2009 - 0517 - 5280 Unique Comment Golder Associates Inc. on behalf of the Florida Sugar Industry EPA -HQ - OAR- 2009 - 0517 - 5281 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5283 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 5284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5285 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5287 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5288 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5290 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5291 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5292 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5293 G eneral Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 142 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5294 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5295 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5296 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5298 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5299 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5300 Unique Comment Virginia Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 5301 Unique Comment DTE Energy EPA -HQ - OAR- 2009 - 0517 - 5302 Unique Com ment Georgia Mining Association EPA -HQ - OAR- 2009 - 0517 - 5303 Unique Comment American Bakers Association EPA -HQ - OAR- 2009 - 0517 - 5304 Extension State of Alabama EPA -HQ - OAR- 2009 - 0517 - 5305 Unique Comment Solid Waste Association of North America EPA -HQ - OAR- 2009 - 0517 - 5306 Unique Comment Clean Air Task Force

EPA -HQ - OAR- 2009 - 0517 - 5306.1 Unique Comment Alliance for Climate Protection, Clean Air Task force, Climate Solutions, Environment America, Environmental Defense Fund, Natural Resources Defense Council, Citizens for Pennsylvania's Future, Sierra Club EPA -HQ - OAR- 2009 - 0517 - 5306.2 Unique Comment Sierra Club, Natural Resources Defense Council, Environmental Defense Fund EPA -HQ - OAR- 2009 - 0517 - 5306.3 Unique Comment Sierra Club

EPA -HQ - OAR- 2009 - 0517 - 5306.4 Unique Comment Clean Air Task Force, Indiana Wildlife Federation, Michigan Environmental Council, Ohio Environmental Council EPA -HQ - OAR- 2009 - 0517 - 5306.5 Attachment EPA -HQ - OAR- 2009 - 0517 - 5307 Unique Comment IN Department of Environmental Management EPA -HQ - OAR- 2009 - 0 517 - 5308 Unique Comment Tenaska, Inc. EPA -HQ - OAR- 2009 - 0517 - 5309 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5310 Unique Comment Murray Energy Corporation EPA -HQ - OAR- 2009 - 0517 - 5311 Unique Comment Clean Air Task Force EPA -HQ - OAR- 2009 - 0517 - 5312 Unique Comment Missouri Public Utility Alliance EPA -HQ - OAR- 2009 - 0517 - 5313 Unique Comment E.ON US LLC EPA -HQ - OAR- 2009 - 0517 - 5314 Unique Comment California Air Pollution Control Officer's Association EPA -HQ - OAR- 2009 - 0517 - 5315 Unique Comment North American Coal Co rporationDraft – Do Not Cite or Quote April 22 , 2010



### A - 143 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5316 Unique Comment Seminole Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 5317 Unique Comment Hunton and Williams LLP on behalf of Utility Air Regulatory Group EPA -HQ - OAR- 2009 - 0517 - 5318 Extension State of Nevada EPA -HQ - OAR- 2 009 - 0517 - 5320 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5321 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5322 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5323 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5324 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5325 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5326 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5327 Unique Comment A&N Electric Cooperative

EPA -HQ - OAR- 2009 - 0517 - 5328 Unique Comment Louisiana Association of Bussiness and Industry, Louisiana Chemical Association, Louisiana Mid- Continent Oil and Gas Association, Louisiana Pulp and Paper Association EPA -HQ - OAR- 2009 - 0517 - 5329 Unique Comment Globalfounders U.S. Inc. EPA -HQ - OAR- 2009 - 0517 - 5330 Form Letter 3 Individual EPA -HQ - OAR- 200 9 - 0517 - 5331 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 5332 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5333 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5335 Unique Comment Treated Wood Council EPA -HQ - OAR- 2009 - 0517 - 5336 Unique Comment National Association of Clean Water Agencies

EPA -HQ - OAR- 2009 - 0517 - 5337 Unique Comment Williams and Jensen, PLLC on behalf of the Energy - Intensive Manufacturers Working Group on Greenhouse Gas Regulation EPA -H Q - OAR- 2009 - 0517 - 5338 Unique Comment WA Department of Ecology EPA -HQ - OAR- 2009 - 0517 - 5339 Unique Comment MS Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 5340 Unique Comment Van Ness Feldman, PC on behalf of Coalition for Emission Reduction Proje cts EPA -HQ - OAR- 2009 - 0517 - 5341 Unique Comment ConocoPhillips Company EPA -HQ - OAR- 2009 - 0517 - 5342 Unique Comment Union for Jobs and the Environment EPA -HQ - OAR- 2009 - 0517 - 5343 Extension Troutman Sanders LLP on behalf of Peabody Energy Company EPA -HQ - OAR- 2009 - 0517 - 5344 Extension Individual/I N House of Representatives EPA -HQ - OAR- 2009 - 0517 - 5345 Unique Comment NiSource, Inc.Draft – Do Not Cite or Quote April 22 , 2010



### A - 144 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5346 Unique Comment California Council for Environmental and Economic Balance EPA -HQ - OAR- 2009 - 0517 - 5347 Unique Comment NPCA/FSCT EPA -HQ - OAR- 2009 - 0517 - 5348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5349 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 5350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5351 Unique Comment Laclede Gas Company EPA -HQ - OAR- 2009 - 0517 - 5352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5356 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5361 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 5362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5363 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5364 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5366 Form Letter 18 Individual

EPA -HQ - OAR- 2009 - 0517 - 5367 Unique Comment National Steering Committee for Small Business Ombudsman and Small Business Environmental Assistance Programs EPA -HQ - OAR- 2009 - 0517 - 5368 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5369 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5370 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 53 74 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5375 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5376 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5377 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5378 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 5379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5380 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5381 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 145 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5383 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 5384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5387 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5389 General Comment Individual

EPA -HQ - OAR- 2009 - 0517 - 5390 Unique Comment Kelley Drye and Warren LLP on behalf of the Speciality Steel Industry of North American and the Steel Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 5391 Unique Comment Waste Management EPA -HQ - OAR- 2009 - 0517 - 5392 Extension State of Alaska EPA -HQ - OAR- 2009 - 0517 - 5393 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 5394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5395 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5396 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5398 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5399 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5400 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5404 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5405 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5407 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5408 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5409 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5414 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 5415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5417 Unique Comment Intel CorporationDraft – Do Not Cite or Quote April 22 , 2010



### A - 146 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5418 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5419 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5420 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5421 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5422 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5423 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5425 Unique Comment Montana Building Industry Association EPA -HQ - OAR- 2009 - 0517 - 5426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5428 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 5429 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5430 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5432 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5433 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 5434 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5435 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5436 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5437 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5439 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5440 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5441 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5442 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5443 Unique Comment AK Department of Environmental Conservation/Division of Air Quality EPA -HQ - OAR- 2009 - 0517 - 5444 Unique Comment Gibbs Group Holdings, Inc. EPA -HQ - OAR- 2009 - 0517 - 5445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5446 Unique Comment Association of Electric Companies of Texas EPA -HQ - OAR- 2009 - 0517 - 5447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5448 Unique Comment Wyoming Outdoor Council EPA -HQ - OAR- 2009 - 0517 - 5449 Extension Montana Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 5450 Form Letter 4 Davron Technologies, Inc. EPA -HQ - OAR- 2009 - 0517 - 5451 Extension Nebraska Legislature EPA -HQ - OAR- 2009 - 0517 - 5452 Unique Comment Accurate Safety Distributors, Inc. EPA -HQ - OAR- 2009 - 0517 - 5453 Unique Comment 60 Plus Association EPA -HQ - OAR- 2009 - 0517 - 5454 Unique Comment West Virginia LegislatureDraft – Do Not Cite or Quote April 22 , 2010



### A - 147 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5455 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5456 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5457 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5459 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5460 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5461 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5462 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5466 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5467 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5469 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5472 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5473 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5474 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5475 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5476 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5477 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 5478 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5479 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5480 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5481 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5482 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5483 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5486 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5488 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5489 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5490 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5492 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 148 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5493 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5494 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5495 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5496 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5497 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5498 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5499 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5500 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5502 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5503 Unique Comment United Property Owners of Montana, Inc. EPA -HQ - OAR- 2009 - 0517 - 5504 Extension Greater Medina Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 5505 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5506 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5507 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5508 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5509 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5510 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 5511 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5512 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5513 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5514 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5515 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5518 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5519 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5521 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5522 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5523 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5524 Extension State of Nebraska EPA -HQ - OAR- 2009 - 0517 - 5525 Extensi on Missouri Senate EPA -HQ - OAR- 2009 - 0517 - 5526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5528 Unique Comment WI Department of Natural Resources EPA -HQ - OAR- 2009 - 0517 - 5529 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 149 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5530 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5531 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5532 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5533 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5534 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5535 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5537 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5538 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5539 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5540 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5541 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5542 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5543 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 55 44 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5545 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5550 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5551 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5552 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5553 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5554 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5555 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5556 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5557 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5561 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5562 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5563 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5564 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5566 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5567 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 150 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5569 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5570 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 5573 Unique Comment Schmit Industries EPA -HQ - OAR- 2009 - 0517 - 5574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5575 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5576 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5578 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5579 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5580 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5581 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5584 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5585 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5586 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5587 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5588 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5589 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5591 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5 592 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5593 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5594 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5596 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 5597 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5599 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5601 Unique Comment Delaware Electric Cooperative, Inc. EPA -HQ - OAR- 2009 - 0517 - 5602 Unique Comment KS Farm Bureau EPA -HQ - OAR- 2009 - 0517 - 5603 Extension NE Chamber of Commerce and Industry EPA -HQ - OAR- 2009 - 0517 - 5604 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 5605 Extension LA Department of Natural ResourcesDraft – Do Not Cite or Quote April 22 , 2010



### A - 151 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5606 Extension State Senator of Arkansas EPA -HQ - OAR- 2009 - 0517 - 5607 Extension State of Mississippi EPA -HQ - OAR- 2009 - 0517 - 5608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5609 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 5610 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5611 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5612 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5613 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5614 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 5615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5616 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5619 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5620 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5624 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5628 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 5629 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5631 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5633 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5634 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5637 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5638 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5643 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 152 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5644 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5645 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5647 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5648 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5654 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5655 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5656 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5657 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5658 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5659 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5661 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5662 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5663 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5664 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5665 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5666 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5667 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 5668 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5672 Extension State of South Carolina EPA -HQ - OAR- 2009 - 0517 - 5673 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5674 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5676 Unique Comment Baker Hostetler on behalf of C enter for the Rule of Law EPA -HQ - OAR- 2009 - 0517 - 5677 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5678 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5679 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5680 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 5681 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 153 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5682 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5684 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5685 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5686 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5687 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5688 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5689 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5690 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5691 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5692 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5693 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5694 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5695 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5696 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5697 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5700 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5701 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5702 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5703 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5704 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 570 5 Unique Comment Countrymark Cooperative, LLP EPA -HQ - OAR- 2009 - 0517 - 5706 Unique Comment First Energy on behalf of FirstEnergy Generation Corp. EPA -HQ - OAR- 2009 - 0517 - 5707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5708 Unique Comment Mama's Manna Bakery EPA -HQ - OAR- 2009 - 0517 - 5709 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5710 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5711 Unique Comment American Gas Association EPA -HQ - OAR- 2009 - 0517 - 5712 Unique Comment ArcelorMittal EPA -HQ - OAR- 2009 - 0517 - 57 13 Unique Comment Louisiana Propane Gas Association EPA -HQ - OAR- 2009 - 0517 - 5714 Unique Comment Consumers Energy EPA -HQ - OAR- 2009 - 0517 - 5715 Unique Comment Vinson and Elkins on behalf of Coalition for Responsible Regulation, Inc. EPA -HQ - OAR- 2009 - 0517 - 5716 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5717 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 154 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5718 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5719 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5720 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 5721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5722 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5723 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5724 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5725 Unique Comment Individual EPA -HQ - O AR- 2009 - 0517 - 5726 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5727 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5728 Unique Comment N.W. Bernstein and Associates, LLC on behalf of Eco Power Solutions USA Corp. EPA -HQ - OAR- 2009 - 0517 - 5729 Unique Comment Synergy Operating, LLC EPA -HQ - OAR- 2009 - 0517 - 5730 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5731 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5732 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5733 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 5734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5735 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5736 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5737 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5738 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5739 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5740 Unique Comment Flexible Packaging Association EPA -HQ - OAR- 2009 - 0517 - 5741 Unique Comment East Kentucky Power Cooperative EPA -HQ - OAR- 2009 - 0517 - 5742 Unique Comment Covanta Energy Corporation EPA -HQ - OAR- 2009 - 0517 - 5743 Unique Comment Io wa Farm Bureau EPA -HQ - OAR- 2009 - 0517 - 5744 Extension State of Utah EPA -HQ - OAR- 2009 - 0517 - 5745 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5746 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5747 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5748 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5750 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5751 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 575 2 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5753 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5754 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 155 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5756 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 5757 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5758 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5759 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5760 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5761 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5762 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5764 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5765 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 5766 Unique Comment National Association of Manufacturers EPA -HQ - OAR- 2009 - 0517 - 5767 Unique Comment Midway Sales and Distributing, Inc. EPA -HQ - OAR- 2009 - 0517 - 5768 Extension Maine Motor Transport Association EPA -HQ - OAR- 2009 - 0517 - 5769 Unique Comment Manufacture Alabama EPA -HQ - OAR- 20 09 - 0517 - 5770 Extension Harper Construction EPA -HQ - OAR- 2009 - 0517 - 5771 Unique Comment Small Business and Entrepreneurship Council EPA -HQ - OAR- 2009 - 0517 - 5772 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5773 Unique Comment American Electric Power EPA -HQ - OAR- 2009 - 0517 - 5774 Unique Comment Midwest Generation EPA -HQ - OAR- 2009 - 0517 - 5775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5776 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5778 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5780 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5781 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 5782 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5784 Unique Comment State of Indiana EPA -HQ - OAR- 2009 - 0517 - 5785 Unique Comment Business Owners and Managers Association of Columbus EPA -HQ - OAR- 2009 - 0517 - 5786 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5787 Extension The Amalgamated Sugar Company LLC EPA -HQ - OAR- 2009 - 0517 - 5788 Unique Comment Arizona Public Service EPA -HQ - OAR- 2009 - 0517 - 5789 Unique Comment National Association of Realtors EPA -HQ - OAR- 2009 - 0517 - 5790 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 156 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0 517 - 5791 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5793 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5794 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5796 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5797 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5798 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5799 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5800 Unique Comment AT&T EPA -HQ - OAR- 2009 - 0517 - 5801 Unique Comment LA Department of Economic Development EPA -HQ - OAR- 2009 - 0517 - 5802 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5803 Extension Staker Parson Companies EPA -HQ - OAR- 2009 - 0517 - 5804 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 5805 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5806 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5808 Unique Comment J.R. Simplot Company EPA -HQ - OAR- 2009 - 0517 - 5809 Unique Comment Southern Company EPA -HQ - OAR- 2009 - 0517 - 5810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5811 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5813 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5814 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5815 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5816 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5817 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5818 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 5819 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5820 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5821 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5822 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5824 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5825 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5826 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5827 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5828 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 157 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5829 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5830 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5831 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5833 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5834 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5837 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5838 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5839 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5840 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5841 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5842 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 584 3 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5844 Unique Comment West Virginia Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 5845 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5846 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5847 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5848 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5850 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5852 F orm Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5853 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5854 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5855 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 5857 Form Letter 18 EPA -HQ - OAR- 2009 - 0517 - 5858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5860 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 5862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5866 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 158 Docket ID Letter Type 1 Organization EPA -HQ - O AR- 2009 - 0517 - 5867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5869 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5877 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5878 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5879 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5880 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5881 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5882 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5883 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5884 Unique Comment Citizens Alliance for Responsible Energy EPA -HQ - OAR- 2009 - 0517 - 5885 Unique Comment Individual/Baker Boy EPA -HQ - OAR- 2009 - 0517 - 5886 Unique Comment Northwest Mining Association EPA -HQ - OAR- 2009 - 0517 - 5887 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5888 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5889 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5890 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5892 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5893 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5894 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5895 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5897 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5899 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5900 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5902 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5904 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 159 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5905 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5907 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5908 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5909 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5910 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5911 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5912 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5913 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5914 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5915 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5916 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5919 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5921 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5922 Unique Comment Rubber Manufacturers Association EPA -HQ - OAR- 2009 - 0517 - 5923 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5924 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5925 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5927 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5929 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5930 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5932 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5934 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5935 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5936 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5937 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5938 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5939 Unique Comment Cleco General Comment Group, LLC EPA -HQ - OAR- 2009 - 0517 - 5940 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5942 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 160 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5943 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5944 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5945 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5946 Form Letter 14 Individual EP A -HQ - OAR- 2009 - 0517 - 5947 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5948 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5949 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5950 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5951 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5955 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5956 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5958 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5960 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 59 61 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5962 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5964 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5965 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 5966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5967 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5968 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5972 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5975 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5976 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5978 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5979 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5980 Form Le tter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 161 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 5981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5982 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5983 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 598 5 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5986 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5987 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5989 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 5990 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 5991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5992 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5993 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5994 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 5995 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5996 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 5997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 5999 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6000 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6002 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6003 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6004 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 6005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 600 9 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6012 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6013 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6014 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6017 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6018 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 162 Docket ID Letter Type 1 Organization EPA -H Q - OAR- 2009 - 0517 - 6019 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6020 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6022 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6023 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 6024 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6025 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6026 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6027 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6028 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6031 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6032 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6033 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6035 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6036 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6037 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 6038 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6039 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6040 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6041 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6044 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6045 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6046 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6047 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6048 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6050 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6051 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6056 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 163 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6062 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6063 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6064 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6065 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6066 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 6067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6071 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6072 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6073 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6076 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6083 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6085 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6087 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6088 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6089 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6091 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6093 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6094 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 164 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6095 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 6096 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6097 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6098 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6100 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6101 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6103 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6104 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6105 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6106 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6107 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6108 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6109 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 6110 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6111 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6112 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6113 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6114 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6115 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6116 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6117 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6119 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6120 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6121 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6123 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6126 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6128 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6129 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6130 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6131 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6132 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 165 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6133 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6 134 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6135 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6136 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6137 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6138 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 6139 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6140 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6141 Unique Comment West Virginia Oil and Natural Gas Association EPA -HQ - OAR- 2009 - 0517 - 6142 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6 143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6147 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6148 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6149 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6150 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6151 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6155 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6156 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6157 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6160 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6161 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6162 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6164 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6165 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6166 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6168 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6169 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6170 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 166 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6171 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6172 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6173 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6175 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6176 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6177 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6178 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6179 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6180 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6183 Unique Comment Individual/WV Dept. of Environmental Protection EPA -HQ - OAR- 2009 - 0517 - 6184 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6185 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6186 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6189 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6190 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6191 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6192 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6193 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6194 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6195 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6196 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6197 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6198 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6199 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6 200 Unique Comment Clean Air Task Force EPA -HQ - OAR- 2009 - 0517 - 6201 Unique Comment National Association of Home Builders EPA -HQ - OAR- 2009 - 0517 - 6202 Unique Comment FirstEnergy on behalf of Jersey Central Power and Light EPA -HQ - OAR- 2009 - 0517 - 6203 Unique Comment North American Insulation Manufacterers Association EPA -HQ - OAR- 2009 - 0517 - 6204 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6206 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 167 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6207 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6208 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6209 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6211 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6212 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6213 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6214 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6215 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6216 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6217 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6218 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6219 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6221 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6222 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6223 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6224 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6226 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6230 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6231 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6233 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6234 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6235 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6236 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6237 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6238 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6239 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6240 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6 241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6242 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6243 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6244 Form Letter 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 168 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6245 Form Letter 14 Individual EPA -HQ - OAR- 2 009 - 0517 - 6246 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6247 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6248 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6250 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 6251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6252 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6253 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6254 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6255 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6256 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6257 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6258 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6259 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6260 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6261 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6262 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6263 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6264 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6265 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6266 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6267 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6268 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6269 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 6270 Unique Comment FirstEnergy on behalf of Ohio Edison Company EPA -HQ - OAR- 2009 - 0517 - 6271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6275 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6276 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6277 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6278 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6280 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6281 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6282 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 169 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6283 Form Letter 15 Individual EPA -H Q - OAR- 2009 - 0517 - 6284 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6285 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6286 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6287 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6288 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6290 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6291 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6292 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6293 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6294 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6296 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6298 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6299 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6300 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6301 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6302 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 6303 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6304 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6305 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6307 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6310 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6312 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6315 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6316 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6317 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6319 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6320 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 170 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6322 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6323 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6325 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6326 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6327 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6328 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6331 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6333 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6335 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6336 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6337 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6338 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6339 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6342 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6343 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6344 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6345 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6346 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6347 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6348 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6349 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6350 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 635 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6352 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6353 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6354 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6355 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 6356 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6357 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6358 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 171 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6359 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6360 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 6361 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6362 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6363 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6364 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6365 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6366 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6368 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6369 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6370 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 6371 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6372 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6373 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 637 5 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6376 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6377 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6378 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6379 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 6380 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6382 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6383 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6384 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6385 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6386 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6387 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6388 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6389 Form Letter 14 Individ ual EPA -HQ - OAR- 2009 - 0517 - 6390 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6391 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6392 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6395 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6396 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 172 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6398 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6399 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6400 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6401 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6403 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 6404 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6405 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6406 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6407 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6408 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6409 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6410 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6411 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6412 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6413 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6414 Unique Comment Texas Association of Bussiness EPA -HQ - OAR- 2009 - 0517 - 6415 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6416 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6417 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 641 8 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6419 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6420 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6421 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6422 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6423 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6424 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6425 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6426 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6427 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6428 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6429 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6430 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6431 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6432 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6433 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6434 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 173 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6435 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6437 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6439 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6441 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6442 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6443 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6444 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6445 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6446 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6447 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6449 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6450 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6451 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6452 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6454 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6455 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6456 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6457 Unique Comment Carbon Offset Providers Coalition EPA -HQ - OAR- 2009 - 0517 - 6458 Unique Comment Energy Recovery Council EPA -HQ - OAR- 2009 - 0517 - 6459 Unique Comment San Miguel Electric Cooperative, Inc. EPA -HQ - OAR- 2009 - 0517 - 6460 Unique C omment Scientists and Engineers for Energy and Environment EPA -HQ - OAR- 2009 - 0517 - 6461 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6463 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6464 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6465 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6466 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6467 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6468 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6469 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6472 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 174 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6473 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6474 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6476 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6477 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6478 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6479 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6481 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6482 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6483 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6484 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6485 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6486 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6488 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6490 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6491 Unique Comment State of Alabama EPA -HQ - OAR- 2009 - 0517 - 6492 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 64 93 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6494 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6495 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6496 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6497 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 6498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6499 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6500 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6501 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6502 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 6503 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6505 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6506 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6507 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6508 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6509 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6510 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 175 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6512 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6513 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6514 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6516 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 651 7 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6518 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6519 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6520 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6521 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6522 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6523 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6524 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6525 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6526 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 6527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6529 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6530 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6531 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 6532 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6533 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6535 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6536 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6537 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6538 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6539 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6540 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6541 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6543 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6544 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6545 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 6546 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6547 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6548 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 176 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6549 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6550 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6551 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6552 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6554 General Comment Keady EPA -HQ - OAR- 2009 - 0517 - 6555 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6556 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6557 General Comment Keady EPA -HQ - OAR- 2009 - 0517 - 6558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6560 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6561 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6562 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6563 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6564 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6569 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6570 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6571 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6572 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6573 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6574 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 6575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6577 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6579 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6581 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6582 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6583 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6584 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6586 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 177 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6587 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6590 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6592 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6594 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6595 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6596 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6598 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 65 99 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6600 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6602 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6603 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 6604 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6605 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6606 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6607 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6608 Form Letter 14 Individual EPA -H Q - OAR- 2009 - 0517 - 6609 Unique Comment Tennessee Farm Bureau EPA -HQ - OAR- 2009 - 0517 - 6610 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6611 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6613 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6614 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6615 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6616 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6617 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6618 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6619 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6620 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6622 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 6623 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6624 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 178 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6627 Form Letter 13 Individual EPA -HQ - O AR- 2009 - 0517 - 6628 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6629 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6630 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6632 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6633 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6634 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6635 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6637 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6638 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6639 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 6640 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6642 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6644 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6645 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6646 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6 647 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6648 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6649 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6650 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6651 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 6652 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6655 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6656 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 6657 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6658 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6659 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6660 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6661 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6662 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 179 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6663 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6664 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6665 Unique Comment Town of Morristown EPA -HQ - OAR- 2009 - 0517 - 6666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6667 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6671 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6672 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6673 Unique Comment Numerous organizations, associations and Individual s EPA -HQ - OAR- 2009 - 0517 - 6674 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 6675 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6676 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6680 Unique Comment Basin Electric Pow er Cooperative EPA -HQ - OAR- 2009 - 0517 - 6681 Unique Comment WY Department of Environmental Quality EPA -HQ - OAR- 2009 - 0517 - 6682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6684 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6685 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6686 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6687 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6688 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6689 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6690 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6691 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6692 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6693 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6694 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6695 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6697 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 66 99 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6700 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 180 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6701 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6702 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6703 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 6704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6705 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6706 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6707 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6708 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 6709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6710 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6711 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6712 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6713 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 6714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6716 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6718 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 6719 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6720 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6721 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6722 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6724 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6725 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6726 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6727 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6728 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6730 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6732 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6733 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6735 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6736 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6738 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 181 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6739 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6741 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6742 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6744 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6745 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6746 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6747 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6748 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6749 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6750 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6 752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6753 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6755 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6756 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6757 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6758 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6759 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6760 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6762 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6763 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6765 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6766 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6767 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6768 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6769 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6770 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6771 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6772 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6773 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6774 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6776 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 182 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6778 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6779 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6780 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0 517 - 6781 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6782 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6783 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6784 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6785 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 6786 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6789 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6793 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6794 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6795 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6797 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6798 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6799 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6800 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6804 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 680 5 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6807 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6808 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6809 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 6810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6811 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6813 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6814 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 183 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6815 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6816 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6818 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6819 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6820 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6821 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6822 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6824 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6825 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6826 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6827 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6828 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6829 F orm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6830 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6831 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6832 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6833 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 6834 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6836 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6837 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6838 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6842 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6844 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6845 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6846 Form Letter 21 Alliance for Climate Protection EPA -HQ - OAR- 2009 - 0517 - 6847 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 68 48 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6849 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6850 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6852 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 184 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 20 09 - 0517 - 6853 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6855 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6856 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6857 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6859 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6861 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6863 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6867 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6868 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 687 2 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6874 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6875 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6876 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6877 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6878 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6879 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6880 Unique Comment Jim Johnson Nissan Hyundai EPA -HQ - OAR- 2009 - 0517 - 6881 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6883 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6884 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6885 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6886 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6887 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6888 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6890 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 185 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 689 1 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6892 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6893 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6894 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6896 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6897 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6899 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6900 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6902 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6903 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6904 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6905 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6906 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6909 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6910 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 6911 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6913 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6915 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6917 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6918 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6919 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6920 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6921 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6922 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6924 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6927 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6928 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 186 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6929 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 6930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6933 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6934 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 6935 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6936 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6939 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6941 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6942 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6945 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6946 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6947 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6948 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 6949 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6951 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6953 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6954 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6955 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6956 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6957 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6958 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6960 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6961 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6962 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6963 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6964 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6965 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6966 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 187 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 6967 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6968 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6969 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 6970 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6971 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6972 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 69 73 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6974 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6975 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6976 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6977 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 6978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6979 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6980 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6981 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6982 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6985 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6986 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6987 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 6988 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6989 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 6991 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6993 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 6994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6996 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6997 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 6999 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7000 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7001 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 7002 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7003 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7004 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 188 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7005 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7006 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7010 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7012 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7014 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7015 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7017 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7020 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7021 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7022 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7023 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7024 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7025 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7026 Unique Comment NRG Energy, Inc. EPA -HQ - OAR- 2009 - 0517 - 7027 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7028 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7029 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7031 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7032 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7033 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7034 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7035 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7036 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7037 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7040 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7041 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7042 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 189 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7044 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7045 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7047 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7048 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7049 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 705 0 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7052 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7053 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7056 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7059 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 7060 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 7061 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7064 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7069 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7073 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7080 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 190 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7083 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 7084 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7085 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7086 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7087 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7089 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7091 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7092 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7093 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 7094 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7095 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7098 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7099 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7100 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7101 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7102 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7103 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7104 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7105 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7107 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 05 17 - 7108 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7109 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7111 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7112 Form Letter 15 Individual EPA -HQ - O AR- 2009 - 0517 - 7113 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7114 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 7115 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7117 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7118 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 191 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7120 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7121 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7124 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7125 Unique Comment S&P Insulation EPA -HQ - OAR- 2009 - 0517 - 7126 Unique Comment Regal Rubber Company EPA -HQ - OAR- 2009 - 05 17 - 7127 Unique Comment Stow City, Ohio EPA -HQ - OAR- 2009 - 0517 - 7128 Unique Comment Crown Battery Manufacturing Co. EPA -HQ - OAR- 2009 - 0517 - 7129 Unique Comment Mattingly Products Company, Inc. EPA -HQ - OAR- 2009 - 0517 - 7130 Unique Comment North Carolina 86th Distri ct EPA -HQ - OAR- 2009 - 0517 - 7131 Unique Comment Hickman Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 7132 Unique Comment Penobscot McCrum, LLC EPA -HQ - OAR- 2009 - 0517 - 7133 Unique Comment McNairy County Economic Development Council EPA -HQ - OAR- 2009 - 0517 - 7134 Unique Comment LA Department of Economic Development EPA -HQ - OAR- 2009 - 0517 - 7135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7136 Unique Comment Greater North Fulton Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 7137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 7138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7141 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7145 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7146 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7147 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7149 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7151 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7152 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7155 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 192 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7156 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7157 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7159 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7161 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 71 62 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7163 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7164 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7165 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7166 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 7167 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7168 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7169 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7170 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7171 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 7172 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7173 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7174 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7175 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7176 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 7177 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7178 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7179 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7180 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7181 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 7182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7184 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7185 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7186 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7187 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7189 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7190 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7191 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7192 Unique Comment Kansas Agribusiness Retailers Association EPA -HQ - OAR- 2009 - 0517 - 7193 Unique Comment Robbins Timber, Inc.Draft – Do Not Cite or Quote April 22 , 2010



### A - 193 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 71 95 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7197 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7199 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 7200 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7201 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7202 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7203 Unique Comment Carolina Mills, Inc. EPA -HQ - OAR- 2009 - 0517 - 7204 Unique Comment Chero kee Tobacco Company, LLC EPA -HQ - OAR- 2009 - 0517 - 7205 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7206 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7208 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 7209 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7210 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7211 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7212 Unique Comment State of West Virginia EPA -HQ - OAR- 2009 - 0517 - 7213 Unique Comment Westree Financial EPA -HQ - OAR- 2009 - 0517 - 7214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7215 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7216 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7217 Unique Comment Johnson City- Jonesborough Washington County, TN Economic Development Board EPA -HQ - OAR- 2009 - 0517 - 7218 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7219 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7220 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7221 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 7222 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7224 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7225 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7226 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7227 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7228 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7229 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7230 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 194 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7231 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 7232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7233 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7234 General Individual EPA -HQ - OAR- 2009 - 0517 - 7235 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7236 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7237 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7238 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7239 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7240 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7241 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7242 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7243 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7244 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7245 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7246 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7247 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7248 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7249 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7251 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7252 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7254 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7255 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7256 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7257 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7258 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7259 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7260 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7261 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7262 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7263 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7264 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7265 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7266 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7267 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7268 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 195 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7269 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7270 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7271 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7272 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7274 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 727 5 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7276 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7277 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7278 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7279 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7281 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7282 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7283 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7284 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 7285 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7286 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7287 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7288 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7290 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7291 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7292 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7293 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7294 Unique Comment Associated Builders and Contractors, Inc., Maine Chapter EPA -HQ - OAR- 2009 - 0517 - 7295 Unique Comment State of Louisiana EPA -HQ - OAR- 2009 - 0517 - 7296 Unique Comment VT Department of Environmental Conservation EPA -HQ - OAR- 2009 - 0517 - 7297 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7298 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7299 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7300 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7301 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7303 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7305 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 196 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7306 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7307 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7308 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7309 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7310 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7312 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7315 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7316 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7317 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7318 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7321 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 7322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7324 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7325 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7326 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7327 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7328 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7329 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7331 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7332 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7333 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7335 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7336 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7337 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7338 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7339 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 7341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7342 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7343 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 197 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7344 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7345 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7347 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7348 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7349 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7353 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7355 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7356 Form Letter 18 Individual/ South Bend- Elkhart Audubon Society EPA -HQ - OAR- 2009 - 0517 - 7357 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7358 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7359 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7360 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7361 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7362 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7363 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7364 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7365 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7366 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7367 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7368 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7369 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7372 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 737 4 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7376 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7377 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7378 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 7379 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7380 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7381 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 198 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7383 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 7384 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7385 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7388 Form Letter 3 Individ ual EPA -HQ - OAR- 2009 - 0517 - 7389 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7390 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7391 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7392 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7393 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 7394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7395 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7396 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7398 Form Letter 13 Individual/ South Bend- Elkhart Audubon Society EPA -HQ - OAR- 2009 - 0517 - 7399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7401 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7405 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7406 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7407 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7408 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7410 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7411 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 7412 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7413 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7414 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7416 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7417 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7418 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7419 Form Letter 3 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 199 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7421 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 7422 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7423 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7424 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7425 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7427 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7429 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7430 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7434 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7436 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7437 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7439 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7441 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7443 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7448 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7450 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7452 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7453 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7454 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7455 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7457 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 200 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7459 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 746 0 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7463 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7464 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 7465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7466 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7467 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7468 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7470 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7471 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7472 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7473 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7474 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 7475 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7476 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7477 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7478 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7479 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7480 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7481 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7482 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7483 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7484 F orm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7486 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7487 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7488 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 7489 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7490 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7491 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7492 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7493 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7494 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7495 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 201 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7496 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7497 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7498 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7499 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7500 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7501 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7502 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7503 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7504 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7505 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7506 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7507 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7508 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7509 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7510 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7511 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7512 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7513 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7514 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7515 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7516 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7517 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 7518 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7519 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7520 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7521 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7522 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 7523 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7524 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7526 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7528 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7529 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7530 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7531 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7532 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7533 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 202 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7534 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7536 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7538 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7539 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7540 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7541 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7 542 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7543 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7544 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7546 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 7547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7549 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7550 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7551 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7552 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7553 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7554 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7555 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7557 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7558 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7561 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 7562 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7563 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7564 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7566 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7567 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7569 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7570 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7571 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 203 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7574 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7579 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7581 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7582 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7583 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7584 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7585 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7587 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7589 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7590 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7591 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7593 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7595 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7597 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7598 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 7600 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7602 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7603 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7604 Form Letter 7 Individual EPA -HQ - OAR- 20 09 - 0517 - 7605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7606 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7608 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7609 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 204 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7610 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7612 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7613 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7614 Form Letter 15 Individ ual EPA -HQ - OAR- 2009 - 0517 - 7615 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7617 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7619 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7620 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7624 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7625 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7628 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7 629 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7631 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7632 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7633 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7637 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7638 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 7639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7640 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7643 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7644 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7645 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7647 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 205 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7648 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7652 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7653 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7655 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 7656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7657 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 7 658 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 7659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7660 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7661 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7662 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 7663 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7664 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7665 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7666 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7667 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7668 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7672 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 7673 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7676 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7677 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7679 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7680 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7681 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7682 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7683 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7684 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7685 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 206 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7686 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 76 87 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7688 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7690 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7691 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7692 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7694 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7695 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7696 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7697 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7701 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7705 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7706 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7707 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7711 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7712 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7714 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7715 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 771 6 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7719 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7720 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 7721 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7722 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7723 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 20 7 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7724 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 7725 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7726 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7727 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7728 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7729 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7730 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7731 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7732 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7733 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7734 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7735 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7736 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7737 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7739 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7740 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7741 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7743 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7744 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7745 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7747 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7748 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7749 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7750 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7752 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7753 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 7754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7755 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7756 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7758 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7760 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7761 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 208 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7762 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7764 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7765 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7766 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7767 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7768 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7769 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7770 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7771 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7773 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7774 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 7775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7778 Form Letter 9 Individual EPA -HQ - OAR- 2 009 - 0517 - 7779 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7780 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7781 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7782 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7783 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 7784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7785 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7786 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7789 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7792 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7793 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7794 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7795 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7797 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7798 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7799 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 209 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7800 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7 803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7805 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7806 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7807 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 7808 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7809 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7811 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7814 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7815 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7817 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 7818 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7819 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7820 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7822 Form Lett er 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7823 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7824 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7825 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7827 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7828 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7830 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7831 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7832 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7833 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7834 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7837 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 210 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7838 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7839 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7840 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7844 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7845 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7846 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7849 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7850 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7851 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7852 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7853 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7855 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7857 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7858 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7859 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 7861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7864 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7867 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7868 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7869 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7871 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7873 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7874 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7875 Form Letter 18 Indi vidualDraft – Do Not Cite or Quote April 22 , 2010



### A - 211 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7878 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7879 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7880 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7881 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7882 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7883 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 7884 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7886 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7888 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 7890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7893 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7894 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7895 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 7896 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7899 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7900 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7902 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7903 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7904 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 7905 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7906 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7907 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7909 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7913 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 212 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 7 914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7915 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7917 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7918 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 7919 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7920 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7921 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7922 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7924 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7927 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7928 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 7929 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7933 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 7934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7935 Unique Comment NY State Department of Environmental Conservation EPA -HQ - OAR- 2009 - 0517 - 7936 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7939 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7941 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7942 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7945 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7946 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 794 7 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7948 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7949 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7951 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 213 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 200 9 - 0517 - 7952 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7953 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7954 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7955 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7956 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 7957 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7958 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7959 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7960 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7961 Unique Comment Kansas Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 7962 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7963 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7964 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7965 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 796 6 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7967 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7969 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7970 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 7971 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7973 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7974 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 7975 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 7976 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7977 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7978 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7979 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7980 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7982 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7983 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7985 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 7986 Unique Comment Georgia Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 7987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7989 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 214 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 7990 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7991 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7993 Unique Comment Kentucky House of Representatives EPA -HQ - OAR- 2009 - 0517 - 7994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 7995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7996 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7997 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 7998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 79 99 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8000 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8001 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8003 Form Letter 4 Individual/PPG Ind, Inc. EPA -HQ - OAR- 2009 - 0517 - 8004 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8006 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8007 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8008 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8009 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8011 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8012 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8013 Unique Co mment Georgia Poultry Federation EPA -HQ - OAR- 2009 - 0517 - 8014 Unique Comment The Plastic Forming Company EPA -HQ - OAR- 2009 - 0517 - 8015 Unique Comment South Carolina Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 8016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8 017 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8020 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8021 Form Letter 1 Individual EPA -HQ - OAR- 200 9 - 0517 - 8022 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8023 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8024 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8025 Unique Comment MO Department of Natural Resources EPA -HQ - OAR- 2009 - 0517 - 8026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8027 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 215 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8029 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8031 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8032 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8033 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8034 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8035 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 8036 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8037 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8038 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8039 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8040 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 8041 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 8042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8043 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8048 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8049 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8052 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8053 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8055 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8056 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8057 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8059 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8061 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8064 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 8065 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 216 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8069 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8071 Unique Comment York County Board of Commissioners EPA -HQ - OAR- 2009 - 0517 - 8072 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8074 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8077 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8078 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8083 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 8084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8085 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8086 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8087 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8088 Form Letter 2 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8089 Unique Comment Utility Trailer Manufacturing Co. EPA -HQ - OAR- 2009 - 0517 - 8090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8091 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8092 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 8093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8094 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8097 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 8098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8099 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8100 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8102 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8103 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 217 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8104 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8105 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8106 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8107 Form Lett er 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8108 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8111 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8113 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8114 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8115 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8116 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8121 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 8122 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8124 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8125 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8126 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8128 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8131 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8133 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8134 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8135 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8137 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8138 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8140 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8141 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 218 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8145 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8147 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8148 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8149 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8150 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8151 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8152 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8153 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8154 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8156 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8157 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8158 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8160 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8161 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8162 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8163 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8164 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8165 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8166 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8167 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8168 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8169 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 8170 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8171 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8172 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8174 Form Letter 15 Individual EP A -HQ - OAR- 2009 - 0517 - 8175 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8177 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8178 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8179 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 219 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8180 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8181 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8183 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8184 Form Lett er 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8185 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8187 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8188 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8189 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8191 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8193 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8194 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8195 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8196 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8198 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8200 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8201 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8202 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8204 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8206 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8208 Form Letter 1 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8209 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8210 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8211 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8212 Unique Comment Nebraska Farm Bureau Federation EPA -HQ - OAR- 2009 - 0517 - 8213 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8215 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8217 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 220 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8221 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8223 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8224 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8226 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8227 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8228 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8231 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8234 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8235 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8236 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8238 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8239 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8240 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8241 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8242 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8244 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8245 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8246 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8247 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8249 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8250 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8252 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8255 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 221 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8256 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8258 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8261 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8262 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8263 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8264 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8265 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 8266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8267 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8268 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8269 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8270 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8271 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8272 Unique Comment Georgia State Senate EPA -HQ - OAR- 2009 - 0517 - 8273 Unique Comment North Carolina Automobile Dealers Association EPA -HQ - OAR- 2009 - 0517 - 8274 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8275 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8276 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 8277 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8278 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8281 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8282 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8283 Unique Comment MeadWestvaco Corporation EPA -HQ - OAR- 20 09 - 0517 - 8284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8285 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8286 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8287 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8288 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8290 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8291 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8292 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8293 Form Letter 13 Indivi dualDraft – Do Not Cite or Quote April 22 , 2010



### A - 222 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8294 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8295 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8296 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8297 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8298 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8300 Unique Comment Association of Ethanol Processors EPA -HQ - OAR- 2009 - 0517 - 8301 Unique Comment BARC Electric Cooperative EPA -HQ - OAR- 2009 - 0517 - 8302 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8303 Unique Comment South Dakota Trucking Association/South Dakota Automobile Dealers Association EPA -HQ - OAR- 2009 - 0517 - 8304 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8305 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8306 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8307 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8308 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8309 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8310 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8312 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8315 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8317 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8318 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8322 Unique Comment Arkansas State Chamber of Commerce; Associated Industries of Arkansas EPA -HQ - OAR- 2009 - 0517 - 8323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8324 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8325 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8326 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8327 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8328 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8 329 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 223 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8330 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8331 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8333 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 8334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8335 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8336 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8337 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8338 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8339 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8342 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8343 Form Letter 13 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 8344 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8345 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8347 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8350 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8351 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8352 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8353 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8354 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8355 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8356 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8357 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 8358 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8359 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8360 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8361 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8362 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8363 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8364 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8365 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8367 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 224 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8368 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8370 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8372 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8376 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8377 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8378 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8379 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8380 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8381 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 83 82 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8383 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8384 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8385 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8386 Form Letter 18 Individual EPA -HQ - OAR- 200 9 - 0517 - 8387 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8389 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8390 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8391 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8392 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8395 Unique Comment Novozymes EPA -HQ - OAR- 2009 - 0517 - 8396 Unique Comment Montana Contractors' Association EPA -HQ - OAR- 2009 - 0517 - 8397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8398 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8399 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8400 Unique Comment Individual/Davis Insurance Services EPA -HQ - OAR- 2009 - 0517 - 8401 Unique Comment DRT Mfg. Co. EPA -HQ - OAR- 2009 - 0517 - 8402 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8403 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8404 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8405 Unique Com ment DRT Mfg. Co.Draft – Do Not Cite or Quote April 22 , 2010



### A - 225 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8406 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8407 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8409 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8410 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 8411 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8413 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8414 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 8415 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8416 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8417 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8418 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8419 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 8420 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8421 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8422 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8423 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8424 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8425 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8426 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8427 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8429 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8433 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8434 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8437 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 843 9 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8441 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8443 Form Letter 2 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 226 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8447 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8448 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8450 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8452 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8453 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8454 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8455 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8456 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8457 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8458 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8459 Unique Comment Marathon Oil Company EPA -HQ - OAR- 2009 - 0517 - 8460 Unique Comment Micron Technology, Inc. EPA -HQ - OAR- 2009 - 0517 - 8461 Unique Comment URS Corporation EPA -HQ - OAR- 2009 - 0517 - 8462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8464 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8466 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8467 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 8468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8473 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8474 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8475 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8477 Fo rm Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8478 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8479 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8481 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 227 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0 517 - 8482 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8483 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8484 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8487 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8490 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8491 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 8492 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8493 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8494 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8495 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8498 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8499 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8500 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8501 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8502 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8504 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8505 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 8506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8510 Form Letter 12 Individual EPA -H Q - OAR- 2009 - 0517 - 8511 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8512 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8513 Unique Comment Western Sugar Cooperative EPA -HQ - OAR- 2009 - 0517 - 8514 Unique Comment Crete Carrier Corporation EPA -HQ - OAR- 2009 - 0517 - 8515 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8517 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8518 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8519 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 228 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8520 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8521 Unique Comment DART Container Corporation EPA -HQ - OAR- 2009 - 0517 - 8522 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8523 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8524 Form Letter 1 2 Individual EPA -HQ - OAR- 2009 - 0517 - 8525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8527 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8528 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8529 Fo rm Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8530 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8531 Unique Comment U.S. Department of the Interior EPA -HQ - OAR- 2009 - 0517 - 8532 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8533 Unique Comment West Virgini a Automobile and Truck Dealers Association EPA -HQ - OAR- 2009 - 0517 - 8534 Unique Comment Utility Shareholders of South Dakota EPA -HQ - OAR- 2009 - 0517 - 8535 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8537 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8539 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8540 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8541 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 051 7 - 8542 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8543 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8544 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8545 Unique Comment Morgan, Lewis & Bockius LLP on behalf of the Clean Air Implementation Project EPA -HQ - OAR- 2009 - 0517 - 8546 Unique Comment Lawrence Livermore National Laboratory EPA -HQ - OAR- 2009 - 0517 - 8547 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8548 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8549 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8550 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8551 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8552 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8553 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8554 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8555 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 229 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8556 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8557 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8558 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8559 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8562 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8563 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8564 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8565 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8566 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8569 Form L etter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8570 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 857 4 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8575 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8578 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8579 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8580 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 8581 Unique Comment Georgia Motor Trucking Association EPA -HQ - OAR- 2009 - 0517 - 8582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8583 Unique Co mment Cash -Wa Distributing Company EPA -HQ - OAR- 2009 - 0517 - 8584 Unique Comment EM Ventures, LLC EPA -HQ - OAR- 2009 - 0517 - 8585 Unique Comment Kansas Grain and Feed Association EPA -HQ - OAR- 2009 - 0517 - 8586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8589 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8590 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 85 92 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8593 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 230 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8595 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8596 Form Letter 7 Individual EPA -HQ - OAR- 200 9 - 0517 - 8597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8598 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8600 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8601 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 8602 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8603 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8604 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8606 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 8607 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8608 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8610 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8612 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8615 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8616 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8617 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8618 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8619 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8620 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0 517 - 8621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8622 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8623 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8625 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 8626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8627 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8628 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8630 Form Letter 16 Individ ual EPA -HQ - OAR- 2009 - 0517 - 8631 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 231 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8632 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8634 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8635 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8637 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8638 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8639 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8641 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8642 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8644 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 8645 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8646 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8647 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8650 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8651 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8654 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8655 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8656 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8658 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8661 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8662 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8663 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8665 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8666 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8667 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8668 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 8669 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 232 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8671 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8672 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8673 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8675 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8676 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8678 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8679 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8681 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8683 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8684 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8685 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8686 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8687 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8688 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8690 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8691 Unique Comment Deere and Company EPA -HQ - OAR- 2009 - 0517 - 8692 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 8693 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8694 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8696 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8699 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 8700 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8705 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8707 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 233 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8708 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8709 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8711 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8712 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8713 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8714 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8717 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8719 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8721 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8722 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8725 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8726 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8729 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8730 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8731 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 8732 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8734 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 8735 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8736 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8737 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 8738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8739 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8740 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 8741 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8743 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8744 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8745 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 234 Docket ID Letter Type 1 Organization EP A -HQ - OAR- 2009 - 0517 - 8746 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8747 Unique Comment Bay Area Air Quality Management district EPA -HQ - OAR- 2009 - 0517 - 8748 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8749 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8752 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8753 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8754 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8756 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8757 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8758 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8759 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 8760 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8761 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8762 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8764 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8765 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8768 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8772 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8773 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 05 17 - 8774 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8775 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8776 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8777 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8778 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8779 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8780 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8783 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 235 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8784 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8785 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8786 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8787 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8788 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 8789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8791 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8792 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8793 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8794 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8795 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8796 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 8797 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8798 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8800 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8801 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8802 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 8803 Unique Comment National Tribal air Association EPA -HQ - OAR- 2009 - 0517 - 8804 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8805 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8806 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8807 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8809 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8810 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8811 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8813 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8814 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8815 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8816 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8 817 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8818 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8819 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8821 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 236 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 8822 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8823 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8825 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8827 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8829 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8830 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8831 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 8832 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8833 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8835 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8837 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8838 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8841 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8845 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 05 17 - 8846 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8847 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8848 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8849 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8850 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 8851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8852 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8853 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8854 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8857 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8858 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8859 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 237 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8861 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8862 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8863 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8864 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8865 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8868 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8869 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8872 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8874 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 8875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8876 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8878 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8879 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 8880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8881 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8882 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8883 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8888 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8889 Form L etter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8893 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8894 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8896 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8897 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 238 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8898 Form Letter 14 Individual EPA -HQ - OAR- 2 009 - 0517 - 8899 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8901 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8902 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8903 Form Letter 15 Individual EP A -HQ - OAR- 2009 - 0517 - 8904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8905 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8907 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8908 Form Letter 13 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8909 Form Letter 20 CREDO Action EPA -HQ - OAR- 2009 - 0517 - 8910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8913 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8915 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8916 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8917 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8919 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8921 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8922 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 8923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8924 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8925 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8927 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8929 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8932 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 8933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8935 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 239 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8937 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8939 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8942 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8943 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 8944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8945 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8946 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 051 7 - 8947 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8948 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8949 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8950 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8951 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8954 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8956 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8957 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8958 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8959 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8960 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8961 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8962 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8963 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8964 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8965 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8966 Form Letter 1 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 8967 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8969 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8970 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8971 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8972 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8973 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 240 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 8974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8976 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8977 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8978 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8979 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 89 81 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 8982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8983 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8984 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8985 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 8986 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 8987 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8989 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8990 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8992 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8993 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 8994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8996 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 8997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 8998 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 8999 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9000 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 9001 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9002 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9003 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9006 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9007 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9008 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9009 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9010 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9011 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 241 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9012 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9015 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9016 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9017 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9018 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9019 Form Letter 7 Individual EP A -HQ - OAR- 2009 - 0517 - 9020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9021 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9022 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9023 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9024 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9025 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9028 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9031 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9033 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9035 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9036 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9037 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9038 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 90 39 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9040 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9042 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9043 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 9044 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9045 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9046 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9047 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9048 Form Letter 15 Individual EPA -H Q - OAR- 2009 - 0517 - 9049 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 242 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9051 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9052 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9053 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 9054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9055 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9056 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9057 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9058 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 9059 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9061 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9066 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9067 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9068 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9069 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9070 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9073 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9074 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9075 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9076 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9077 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 9078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9083 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9085 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9086 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9087 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 243 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9088 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9089 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9090 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9092 F orm Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9093 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9094 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9095 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9096 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 05 17 - 9097 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9098 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9103 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9105 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9106 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9107 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9108 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9109 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9110 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9111 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9116 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9120 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9123 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9125 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 244 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9131 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9132 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9133 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9134 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9135 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9136 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9139 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9140 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9143 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9144 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9146 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9147 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9148 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9151 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9152 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9153 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9155 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9156 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9157 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9159 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 9160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9161 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9162 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9163 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 245 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9164 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9165 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9166 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9167 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9168 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9169 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9170 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9171 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9173 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9174 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9175 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9176 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9178 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9179 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9180 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9181 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9183 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9184 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9185 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9186 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9187 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9190 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9191 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9193 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9194 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9195 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9196 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9197 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9198 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9199 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9201 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 246 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 92 03 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9204 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9205 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 9206 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9207 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9208 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9209 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9210 Form Letter 11 Individual EPA -HQ - OAR- 2009 - 0517 - 9211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9212 Form Letter 13 Individual EPA -H Q - OAR- 2009 - 0517 - 9213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9215 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9217 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 9218 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9219 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9220 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9221 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9222 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9223 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9224 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9225 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9226 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9227 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9228 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9230 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9231 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9232 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9234 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9235 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9237 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9238 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9239 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 247 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9240 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9241 Form Letter 12 Individual EP A -HQ - OAR- 2009 - 0517 - 9242 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9243 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9244 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9245 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9246 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9248 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9249 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9251 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 9252 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9254 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9255 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 925 6 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9257 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9259 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9260 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 9261 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9262 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9263 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9264 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9265 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9266 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 9267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9268 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9269 Unique Comment Griffith Enterprises EPA -HQ - OAR- 2009 - 0517 - 9270 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9271 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9272 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9273 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9274 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9275 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9276 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9277 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 248 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9278 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9279 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 9280 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9285 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9286 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9287 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9289 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9290 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9291 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9292 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9293 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9294 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9295 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9296 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9297 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9298 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9299 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9300 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9301 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9303 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 930 4 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9305 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9306 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9308 Form Letter 13 Individual EPA -HQ - OAR- 200 9 - 0517 - 9309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9310 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9311 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9312 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9313 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9314 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9315 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 249 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9316 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9317 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9318 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 9319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9320 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9322 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9323 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9324 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9325 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9326 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9328 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9329 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9331 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9332 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9 333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9335 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9336 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9337 Form Letter 7 Individual EPA -HQ - OAR- 2 009 - 0517 - 9338 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9339 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9340 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9341 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9342 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9343 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9344 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9345 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9346 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9347 Form Letter 13 Individ ual EPA -HQ - OAR- 2009 - 0517 - 9348 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9349 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9350 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9351 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9352 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9353 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 250 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9354 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9355 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9356 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9357 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9358 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9359 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9360 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9361 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 93 62 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9363 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9364 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9365 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9366 Form Letter 13 Individual EPA -HQ - OAR- 20 09 - 0517 - 9367 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9368 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9370 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9371 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9372 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9374 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9375 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9376 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 9377 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9378 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9379 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9380 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9381 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9383 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9384 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9385 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9386 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9387 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9388 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9389 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9390 Form Letter 11 Individual EPA -HQ - OAR- 2009 - 0517 - 9391 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 251 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9392 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9393 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9394 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9396 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9400 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9401 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9402 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9403 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9404 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9406 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9407 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9409 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9410 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9411 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9413 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 941 5 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9416 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9417 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9418 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9419 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9420 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9421 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9422 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9423 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9424 Form Letter 1 Individual EPA -HQ - O AR- 2009 - 0517 - 9425 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9427 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9428 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9429 Form Letter 1 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 252 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9430 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9431 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9432 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9435 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9436 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9439 Form Le tter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9440 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9441 General Comment Individual/I SU Saunder, Jacobs, Cassayre Insurance Services EPA -HQ - OAR- 2009 - 0517 - 9442 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9443 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9446 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9447 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9 448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9450 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9452 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 9453 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9454 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9455 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9456 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9457 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9459 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9460 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9461 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9462 Form Letter 15 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 9463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9464 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9465 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9466 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9467 Form Letter 11 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 253 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9469 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9471 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 9472 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9473 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9474 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9475 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9476 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9477 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9478 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9480 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9481 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 05 17 - 9482 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9484 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9485 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9486 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9489 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9490 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9491 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9492 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9493 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9495 Form Letter 2 Individual/Walsh Engineering and Production EPA -HQ - OAR- 2009 - 0517 - 9496 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9497 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9498 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9499 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9500 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9501 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9502 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9503 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9504 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9505 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 254 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9506 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9507 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9508 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9512 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9513 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9514 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9515 Form Lett er 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9516 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9517 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9518 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9520 Fo rm Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9521 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9522 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9523 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9524 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9525 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9526 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9527 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9528 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9529 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9530 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9532 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9533 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9534 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9535 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9536 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9537 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9538 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9539 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9540 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9541 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9542 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9543 Form Letter 1 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 255 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9544 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9546 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9547 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9549 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9550 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9551 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9552 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 955 4 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9555 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9556 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9557 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9558 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9560 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9561 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9562 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9563 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9566 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9567 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9569 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9570 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9576 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9577 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9578 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9579 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9580 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9581 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 256 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9582 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9583 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9584 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9585 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9586 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9587 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 9588 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9589 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9590 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9591 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9593 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9597 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 9598 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9600 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9604 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9606 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9608 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9609 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9610 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9611 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 9612 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 9613 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9614 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9615 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9617 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9619 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 257 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9620 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9621 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9622 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9623 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9624 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9625 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9626 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9627 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9628 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9630 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9631 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9632 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9633 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9634 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9635 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9636 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9639 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9640 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9644 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9645 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 9646 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9647 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9648 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9651 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9653 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9654 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9655 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9656 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9657 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 258 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9658 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9659 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9660 Form L etter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9661 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9662 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9663 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9664 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9665 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9666 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9667 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9669 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9671 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9672 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9673 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9675 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9676 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9677 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9678 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 9679 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9680 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9681 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9682 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9683 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9684 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9685 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9686 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9687 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9688 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9689 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9690 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9691 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9692 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9693 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9694 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9695 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 259 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9698 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 9699 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9705 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9706 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9707 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9711 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9712 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9716 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9718 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9720 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9721 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9722 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9 723 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9724 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9725 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9726 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9727 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9728 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9729 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9730 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 9731 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9732 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9733 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 260 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9734 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9735 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9736 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9737 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9738 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9739 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9740 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9741 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9742 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 9743 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9744 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9745 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9746 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9747 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9748 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9749 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9750 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9752 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9755 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9757 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9758 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9760 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9762 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9764 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9765 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9766 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9767 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9768 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9769 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9770 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9771 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 261 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9772 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9773 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9774 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9775 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9776 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9777 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9778 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9779 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9780 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9781 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9782 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9783 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9784 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9785 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9786 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9791 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9792 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9793 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9794 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9795 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 979 6 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9797 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9798 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9799 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9800 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9801 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9805 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9806 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9807 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9808 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9809 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 262 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9810 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9811 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9812 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9813 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9814 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9815 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9816 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9817 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9818 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9819 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9820 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 9821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9822 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9823 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9825 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9826 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9827 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9829 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9830 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9831 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9832 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9833 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9834 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9836 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9837 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9838 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9840 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9841 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9843 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9844 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 9845 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9846 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9847 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 263 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9849 Form Letter 15 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 9850 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9851 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9852 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9854 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9856 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9857 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9858 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9860 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9861 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9864 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9866 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9869 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 9870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9877 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9878 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9879 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9880 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9881 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9882 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9883 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9884 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9885 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9886 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 264 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9888 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9889 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9891 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9892 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9893 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9894 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9895 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9896 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9898 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9899 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9900 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9901 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9902 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9904 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9905 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9906 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 9907 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 9908 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9909 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9912 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9913 Form Lett er 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9914 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9916 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9917 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9918 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9919 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9920 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9921 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9924 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 265 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9927 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 9928 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9929 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9932 Form Letter 15 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 9933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9934 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9935 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9939 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9940 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9941 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 9942 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9943 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9944 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9945 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9946 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9947 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9948 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9949 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9950 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9951 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9952 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9954 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9955 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9958 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9959 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9960 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9961 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9962 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 266 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 9963 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9964 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9965 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9967 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9969 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9970 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 99 71 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 9972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9973 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9974 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9977 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9978 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9979 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9980 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 9981 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9982 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9983 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9984 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9985 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 9987 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9988 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9989 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9990 Form Letter 1 5 Individual EPA -HQ - OAR- 2009 - 0517 - 9991 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 9992 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9993 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9994 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 9996 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9997 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9998 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 9999 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 1 0000 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 267 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10002 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10003 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10005 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10006 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10007 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10010 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10011 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10013 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10014 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10015 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10016 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10017 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10018 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 10019 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10020 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10021 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10022 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10024 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10025 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10026 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10027 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10029 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10031 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10032 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10033 F orm Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10034 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10035 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10036 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10037 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 10038 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 268 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10039 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10040 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10043 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10044 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10045 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10046 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10047 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10048 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10049 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10051 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10053 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10055 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10056 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10061 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 10062 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10063 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10064 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10065 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10066 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10069 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10070 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10071 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10072 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10073 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10075 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 10076 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 269 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10077 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10078 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10079 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10080 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10081 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10083 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10085 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10086 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10087 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10088 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10089 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 05 17 - 10090 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10091 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10093 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10094 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10095 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10096 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10097 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10098 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10103 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10105 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10106 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10107 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10109 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10114 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 270 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10115 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10119 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10120 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10122 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 1012 3 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10124 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10127 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10129 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10130 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10132 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 10133 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10135 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10136 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10137 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10138 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10139 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10140 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10141 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10 142 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10143 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10144 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10145 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10146 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10147 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10148 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10149 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10150 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10151 Form Letter 15 Individ ual EPA -HQ - OAR- 2009 - 0517 - 10152 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 271 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10154 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10155 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10156 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10157 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10158 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10159 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10160 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 10161 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10162 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10163 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10165 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10167 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10169 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10170 Form Letter 1 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 10171 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10173 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10174 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10175 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10176 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10178 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10179 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 10180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10182 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10183 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10184 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10187 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10188 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10189 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10190 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 272 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10191 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10192 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10193 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 1019 4 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10195 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10196 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10197 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10198 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10199 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10201 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10202 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10204 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10205 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10206 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10207 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10208 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10210 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10211 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10215 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10216 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10217 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 05 17 - 10218 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10219 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10220 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10221 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10222 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10223 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10224 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10225 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10226 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10227 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10228 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 273 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10230 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10231 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10232 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10233 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10234 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10235 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10236 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 102 37 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10238 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10240 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10241 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10242 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10243 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10244 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10245 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10246 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10247 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10248 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10249 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10250 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10251 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10252 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10253 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10254 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10256 Fo rm Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10257 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10258 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10259 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10260 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0 517 - 10261 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10262 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10263 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10264 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10265 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10266 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 274 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10267 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10268 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10269 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10270 Form Letter 7 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 10271 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10272 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10273 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10274 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10276 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10277 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10278 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10279 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 1028 0 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10281 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10282 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10284 Form Letter 1 Individual EPA -HQ - OAR- 20 09 - 0517 - 10285 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10286 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10287 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10288 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10289 Form Letter 7 Individual EP A -HQ - OAR- 2009 - 0517 - 10290 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10291 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10292 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10293 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10294 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10295 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10296 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10297 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10298 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10299 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10300 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10301 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10302 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 10303 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 1030 4 Form Letter 1 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 275 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10307 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10308 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10309 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10310 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10311 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10312 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10313 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10314 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10315 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10316 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10317 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10318 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10320 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10321 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10322 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10323 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10324 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10325 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10326 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10327 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10328 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10329 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10330 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10331 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10332 Form Letter 7 Individual EPA -HQ - OAR- 2 009 - 0517 - 10333 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10334 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10335 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10337 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10338 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10339 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10342 Form Letter 9 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 276 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10345 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10346 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 1034 7 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10348 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10349 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10350 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10351 Form Letter 13 Individual EPA -HQ - OAR- 2 009 - 0517 - 10352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10354 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10355 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10356 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10357 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10358 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10359 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10361 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10362 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10364 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10365 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10366 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10367 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10368 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10369 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10370 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10373 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10374 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10375 Form Letter 7 Individual EP A -HQ - OAR- 2009 - 0517 - 10376 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10377 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10378 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10379 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10380 Form Letter 7 Indi vidualDraft – Do Not Cite or Quote April 22 , 2010



### A - 277 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10381 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10382 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10384 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10385 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10386 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10387 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10388 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10389 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 05 17 - 10390 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10391 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10392 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10393 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10395 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10396 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10397 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10399 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10400 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10402 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10403 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10404 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10405 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10406 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10407 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10408 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0 517 - 10409 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10411 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10412 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10413 Form Letter 13 Individual EP A -HQ - OAR- 2009 - 0517 - 10414 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10415 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10416 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10417 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10418 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 278 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10420 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10421 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10422 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10423 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10424 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10425 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10426 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10427 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 051 7 - 10428 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10429 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10430 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10431 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10432 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10433 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10434 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10436 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10437 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10438 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10439 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10440 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10441 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10442 Form Lett er 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10445 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10446 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10447 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10448 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10453 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10454 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10455 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10456 Form Letter 7 Indi vidualDraft – Do Not Cite or Quote April 22 , 2010



### A - 279 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10457 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10458 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10459 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10460 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10461 Form Lett er 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10464 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 0466 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10467 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10468 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10469 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10470 Form Letter 15 Individual EPA -HQ - O AR- 2009 - 0517 - 10471 General Comment Individual/Tidewaters Gateway Partnership EPA -HQ - OAR- 2009 - 0517 - 10472 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10474 Form Letter 18 I EPA -HQ - OAR- 2009 - 0517 - 104 75 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10476 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10477 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10478 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10479 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10481 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10483 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10484 Form Letter 18 Individ ual EPA -HQ - OAR- 2009 - 0517 - 10485 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10486 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10487 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10488 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10489 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10491 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10492 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10493 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10494 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 280 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10495 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10496 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10497 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10498 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10499 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10500 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10502 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10503 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10506 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10507 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10508 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10510 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10512 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 05 17 - 10513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10515 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10516 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10517 Form Letter 15 Individual EP A -HQ - OAR- 2009 - 0517 - 10518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10519 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10520 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10521 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10522 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10523 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10524 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10525 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10526 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10527 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10528 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10529 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10530 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10531 Form Letter 15 Individual EPA -HQ - OAR- 20 09 - 0517 - 10532 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 281 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10533 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10534 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10535 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10536 Form Letter 10 Individual EPA -HQ - OAR- 2009 - 0517 - 10537 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10538 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10540 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10541 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10542 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10543 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10544 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10545 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10546 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10547 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10548 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10549 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10550 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0 517 - 10551 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10552 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10553 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10554 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10555 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10556 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10557 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10558 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10559 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10560 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10562 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10563 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10564 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10565 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10566 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10567 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10568 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10569 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10570 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 282 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10571 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10572 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10573 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10574 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10575 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10576 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10577 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10578 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10579 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 10580 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10581 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10582 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10583 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10584 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10585 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10586 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10587 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10588 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 1 0589 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10590 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10591 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10592 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10593 Form Letter 18 Individual EPA -HQ - O AR- 2009 - 0517 - 10594 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10595 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10596 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10597 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10598 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 10599 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10600 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10601 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10602 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10603 Form Le tter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10604 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10605 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10606 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10607 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10608 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 283 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10609 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10610 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10611 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10612 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10614 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10615 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10616 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10617 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10618 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10619 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10620 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10621 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10622 Form Le tter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10623 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10624 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10625 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10626 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 10627 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10628 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10629 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10630 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10632 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10633 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10634 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10635 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10636 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10637 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10638 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10639 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10640 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10642 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10643 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10644 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10646 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 284 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10647 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10648 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10649 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10650 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10651 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10654 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10656 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10657 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10660 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10661 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10662 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10663 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 10664 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 10665 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10667 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10668 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10669 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10671 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10672 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10673 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10674 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10675 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10676 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10677 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10678 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10679 Fo rm Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10680 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10681 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10682 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10683 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10684 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 285 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10685 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10686 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10687 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10688 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10689 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10690 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10691 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10692 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10693 Form Letter 7 Individual EP A -HQ - OAR- 2009 - 0517 - 10694 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10696 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10697 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10698 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10699 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10700 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10701 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10702 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10705 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10706 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10707 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 1 0708 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10710 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10711 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10712 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10713 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10714 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10715 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10716 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10717 Form Letter 9 Individual EP A -HQ - OAR- 2009 - 0517 - 10718 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10720 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10721 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10722 Form Letter 9 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 286 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10723 Form Letter 9 Individual EPA -HQ - OAR- 2009 - 0517 - 10724 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10725 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10727 Form L etter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10728 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10729 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10730 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10731 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 107 32 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10733 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10734 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10735 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10736 Form Letter 15 Individual EPA -HQ - OAR- 200 9 - 0517 - 10737 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10738 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10739 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10740 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10741 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10742 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10743 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10745 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10746 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10747 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10748 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10749 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10750 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10751 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10752 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10754 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10755 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10756 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10757 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10758 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10759 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10760 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 287 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10761 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10762 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10763 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10764 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10765 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10766 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10767 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10768 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10769 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10770 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10771 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10772 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10773 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10774 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10775 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10776 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10777 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10779 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10780 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10782 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10783 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10784 Form Letter 15 Individual EPA -HQ - O AR- 2009 - 0517 - 10785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10786 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10787 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10788 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10789 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10790 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10791 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10792 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10793 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10794 Form L etter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10795 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10796 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10797 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10798 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 288 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 051 7 - 10799 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10800 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10802 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10803 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10804 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10805 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10806 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10807 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10809 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10810 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10814 F orm Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10815 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10817 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10818 Form Letter 15 Individual EPA -HQ - OAR- 20 09 - 0517 - 10819 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10820 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10821 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10822 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10823 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10824 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10825 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10826 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10827 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10828 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10829 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10830 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10831 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10832 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10833 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10834 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10835 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10837 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 289 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 10838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10839 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10840 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10842 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10843 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10845 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10846 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10847 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10848 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10850 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10851 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10852 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10853 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10854 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10855 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10856 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10857 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10858 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10859 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10863 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10866 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10867 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10868 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 10869 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10870 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 051 7 - 10871 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10872 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10873 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10875 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 290 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10876 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10877 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10878 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10879 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10880 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10881 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10882 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10883 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10884 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10885 Fo rm Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10886 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10887 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10888 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10890 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10891 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10892 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10893 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10894 Form Letter 19 Individual EP A -HQ - OAR- 2009 - 0517 - 10895 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10896 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10897 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10898 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10900 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10901 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10903 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10904 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10905 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10906 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10907 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10908 Form Letter 19 Individual EPA -HQ - OAR- 2 009 - 0517 - 10909 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10910 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10911 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10913 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 291 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10914 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10915 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10916 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10917 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10918 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10919 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10920 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10921 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10922 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10 923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10924 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10925 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10926 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 10927 Form Letter 19 Individual EPA -HQ - O AR- 2009 - 0517 - 10928 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 10929 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10930 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10932 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10934 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10935 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10936 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10937 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10938 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10939 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10941 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10942 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10943 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10944 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10945 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10946 Form Letter 7 Individual EPA -HQ - OAR- 2 009 - 0517 - 10947 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10948 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10949 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10950 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10951 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 292 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10952 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10953 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10954 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10955 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10956 Form Letter 7 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 10957 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10958 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10959 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10960 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10961 Form Lett er 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10962 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10963 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10964 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10965 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10966 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10967 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10968 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10969 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10970 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10971 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10972 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10973 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10974 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10975 Form Letter 15 Individual EP A -HQ - OAR- 2009 - 0517 - 10976 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10977 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10978 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10979 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10980 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 10981 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10982 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 10983 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10984 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10985 Form Lett er 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10986 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10987 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10988 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10989 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 293 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 10990 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10991 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10992 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10993 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10994 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 10995 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 10996 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 10997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 10998 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 10999 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11000 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 11001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11002 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11003 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11004 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11005 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11006 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11007 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11008 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11009 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11011 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11012 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11013 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0 517 - 11014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11015 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11020 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11021 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11022 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11023 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11024 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11025 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11026 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11027 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 294 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11028 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11029 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11030 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11031 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11032 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 11033 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11034 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11035 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11036 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11037 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11038 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11039 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11041 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11043 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11044 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11051 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11052 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11053 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11054 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11056 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 11057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11058 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11059 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 11060 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11062 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11063 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11064 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11065 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 295 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11068 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 11069 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11076 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11077 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11078 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11079 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11080 F orm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11081 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11082 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11083 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11084 Form Letter 19 Individual EPA -HQ - OAR- 200 9 - 0517 - 11085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11086 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11089 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11090 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11091 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11092 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11094 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11096 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11098 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 1109 9 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11103 Form Letter 19 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 296 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11106 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11107 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11108 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11109 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11110 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11111 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11113 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11114 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11115 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11116 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11117 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 05 17 - 11118 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11119 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11120 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11122 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 11123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11124 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11125 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11126 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11128 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11130 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11131 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11132 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11133 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11134 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11135 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11136 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0 517 - 11137 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11139 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11140 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11141 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 297 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11142 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11143 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11144 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11145 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11147 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11149 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11150 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11154 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11155 Form Letter 7 Individual EPA -HQ - OAR- 2 009 - 0517 - 11156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11157 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11159 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11160 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11161 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11162 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11163 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11164 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11165 Form Lett er 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11166 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11167 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11169 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11174 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 11175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11178 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11179 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 298 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11193 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11198 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11200 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11201 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11202 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 11203 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11204 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11205 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11206 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11207 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11208 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11209 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11210 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11211 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11212 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11213 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11214 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11215 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11216 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 051 7 - 11217 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 299 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11218 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11223 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11224 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11225 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11226 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1123 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11233 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11234 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11235 Form Letter 7 Individual EPA -HQ - OAR- 2 009 - 0517 - 11236 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11237 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11238 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11239 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11240 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11241 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11242 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11243 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11244 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11245 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11246 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11247 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11248 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11249 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11250 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11251 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11254 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 11255 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 300 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11256 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11257 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11258 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11259 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11264 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 11265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11268 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 11269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11276 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11277 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11278 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 11279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11282 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11283 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11284 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11285 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11286 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11287 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11288 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11289 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11290 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11291 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11292 Form Letter 7 Individual EP A -HQ - OAR- 2009 - 0517 - 11293 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 301 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11297 Form Letter 1 9 Individual EPA -HQ - OAR- 2009 - 0517 - 11298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11299 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11300 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11301 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11302 F orm Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11304 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11305 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11306 Form Letter 19 Individual EPA -HQ - OAR- 200 9 - 0517 - 11307 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11308 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11309 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11310 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11319 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11320 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 051 7 - 11321 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11322 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11323 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11324 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11325 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11326 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11327 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11328 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11329 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11330 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11331 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 302 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11332 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11334 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11336 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11339 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 051 7 - 11340 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11341 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11344 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 11345 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11346 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11348 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11 354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11360 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11361 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11366 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11367 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 1136 8 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11369 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 303 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11370 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11371 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11372 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11373 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11374 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11375 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 11376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11377 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 11378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11385 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11386 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 11387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11391 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 11392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11396 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11403 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11407 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 304 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11417 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11425 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11428 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 11429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11430 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11435 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1143 8 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11441 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11444 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11445 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 305 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11447 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11448 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11449 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11457 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11458 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11459 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11466 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11467 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11469 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11472 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11473 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11474 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11475 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11476 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11477 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11478 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11479 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11480 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11481 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11482 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11483 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 306 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1148 5 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11498 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 114 99 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11500 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11502 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11503 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11504 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11505 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11508 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 11509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11513 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11521 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 307 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11523 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 115 41 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11545 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 11546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 1555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11559 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 308 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11560 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11568 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 1 1569 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11570 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11571 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11572 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11573 Form Letter 7 Individual EPA -HQ - OAR- 20 09 - 0517 - 11574 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11587 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 11588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11592 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 11593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11597 Gen eral Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 309 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11606 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 11607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11611 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11635 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 310 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 116 39 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11643 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 11644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 1653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11668 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11669 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11670 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11672 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11673 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 311 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11 681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11689 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11690 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11 695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11699 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 11700 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11701 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11702 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11703 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11704 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11706 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11707 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11708 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11709 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11710 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11711 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 312 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11712 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11713 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11714 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11715 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11716 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11717 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11718 Form Letter 19 Individual EP A -HQ - OAR- 2009 - 0517 - 11719 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11720 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11722 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11723 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11724 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11725 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11726 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 11727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11739 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1174 2 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11747 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11749 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 313 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11751 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11755 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11757 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11760 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11762 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11763 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11764 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11765 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 11766 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11769 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11770 Form L etter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11771 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11774 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 11775 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11787 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 314 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11788 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11802 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 11803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11807 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 11808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11812 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11813 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11814 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11815 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11816 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0 517 - 11817 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11818 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11819 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11820 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11821 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11822 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11823 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11824 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11825 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 315 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11828 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1183 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11 845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11849 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 11850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 1859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11860 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11861 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11862 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11863 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 316 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11864 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11865 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11866 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11868 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 11869 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11870 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11871 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11872 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11873 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11874 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11875 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11876 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11877 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 11878 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11879 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11881 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11882 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 11883 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11884 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11885 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11886 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11887 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11889 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11890 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11891 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11892 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11893 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11894 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11895 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11896 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 05 17 - 11897 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 11898 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11899 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 11900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11901 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 317 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11914 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11919 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11920 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 11921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11924 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 11925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11935 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11936 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11937 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11938 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11939 Form Letter 15 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 318 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11941 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11942 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11943 Form Letter 15 Individual EPA -H Q - OAR- 2009 - 0517 - 11944 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11945 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11946 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11947 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11950 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11951 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11953 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11954 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11955 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11956 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11957 Form Letter 15 Individual EPA -HQ - OAR- 20 09 - 0517 - 11958 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11959 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11960 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11961 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11962 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11963 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11964 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 11965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11967 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 11968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11971 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 11972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11977 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 319 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 11978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 11999 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 12000 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12001 Form Letter 15 Individual/Board of Directors of Aldo Leopold Audubon Society in Stevens Point, WI EPA -HQ - OAR- 2009 - 0517 - 12002 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12003 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 12004 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12005 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12006 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12007 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12008 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12009 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12014 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 320 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12022 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12024 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12025 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12026 Form Letter 7 Individual EPA -HQ - O AR- 2009 - 0517 - 12027 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12028 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12029 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12030 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12031 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12033 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12043 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12052 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 321 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12053 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12054 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 12055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12059 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 12060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12068 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 12069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12081 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12090 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 322 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12091 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12093 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12096 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 12097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1210 6 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12 120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12128 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 323 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12138 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 12139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12147 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 12148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12154 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12160 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12161 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 12162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12166 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 324 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12171 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 12172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12175 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 12176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12202 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12203 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 12204 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 325 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12208 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 12209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12213 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12222 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 12223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12227 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12231 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12242 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 326 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 122 55 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12259 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 12260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12264 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 2269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12280 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 327 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12289 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12290 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12291 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12292 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12293 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12294 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12295 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12296 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12297 Form Le tter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12298 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12299 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12300 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12301 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 1230 2 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12303 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12304 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12305 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12306 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12307 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12308 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12309 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12310 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12311 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12312 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12313 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12314 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12315 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12316 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12317 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12318 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 328 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12319 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12320 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12321 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12322 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12323 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12324 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12325 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12326 Form L etter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12327 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12328 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12329 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12330 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 123 31 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12332 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12333 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12334 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12335 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12336 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12337 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12338 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12339 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12340 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12341 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12342 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12344 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12346 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12347 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12348 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12349 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12350 F orm Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12351 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12352 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12353 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12354 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 12355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12356 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 329 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12359 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 12360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12364 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12373 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 12374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12378 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12394 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 330 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 124 06 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12410 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 12411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12417 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 2420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12425 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12432 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 331 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12433 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 124 34 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12435 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12437 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12438 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12441 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 12442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12443 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 12444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12446 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12448 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12457 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 12458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12459 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12462 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12467 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12470 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 332 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12478 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12486 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12487 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12488 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12494 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 12495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1250 4 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12508 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 333 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12 518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12523 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12532 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12546 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 334 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12555 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 12556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12559 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 12560 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12584 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 335 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12587 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 12588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12592 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 12593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12601 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 12602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12622 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 336 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12629 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 12630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1263 9 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12652 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 126 53 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12660 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 337 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12 667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12685 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 12686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12694 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 12695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12698 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 338 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12704 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 12705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12708 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 12709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12736 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 339 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 20 09 - 0517 - 12737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12741 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 12742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12746 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12747 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12755 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 12756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12760 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12762 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12774 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 340 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12781 General Comment Individual/ The Shalom Center EPA -HQ - OAR- 2009 - 0517 - 12782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 127 83 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12787 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 12788 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 2797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12812 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 341 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12820 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 12821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12824 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 12825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12831 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12832 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12833 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12838 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 12839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12848 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 12849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12850 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 342 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12852 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 12853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12855 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12856 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12857 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12862 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 12863 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12866 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 12867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12873 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12881 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12888 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 343 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12889 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12891 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12892 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12894 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 12895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12914 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12915 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12916 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12919 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12926 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 344 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 12927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12930 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12936 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 12937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12939 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12940 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12947 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12949 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12950 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12961 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12964 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 345 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 20 09 - 0517 - 12965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12966 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12969 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 12970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12975 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 12976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12978 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 12979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12981 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12982 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 12983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12992 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 12993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12994 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 12995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12997 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 12998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 12999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13002 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 346 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13003 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13004 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13006 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 13007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13008 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13016 Fo rm Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13022 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13023 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13024 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13025 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13026 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13030 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13031 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13039 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 13040 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 347 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13042 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13043 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 13044 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13050 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13051 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13053 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13058 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13059 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13060 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13062 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13065 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13066 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13067 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13068 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13078 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 348 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13081 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13082 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13091 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13092 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 13093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13095 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13116 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 349 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13128 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 13129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13132 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 13133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13154 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 350 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13160 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 13161 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13165 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 13166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13174 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 13175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13192 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 351 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13202 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 13203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1321 2 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13 226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13230 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 352 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13231 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13244 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 13245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13253 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 13254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13263 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 13264 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13267 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13268 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 353 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13269 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13277 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 13278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13281 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13291 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13292 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13300 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13301 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13304 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13306 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 354 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13309 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13310 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13314 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13319 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13328 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 13329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13333 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13344 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 355 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13346 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 133 61 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13364 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13365 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13366 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13367 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13379 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13382 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 356 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13384 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13389 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13397 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13398 Form Letter 18 Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13399 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13400 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13401 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13407 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 13408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13412 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 13413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13416 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13417 Form L etter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13418 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13419 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13420 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 357 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13421 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 134 22 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13423 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13424 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 13425 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13426 Form Letter 18 Individual EPA -HQ - OAR- 20 09 - 0517 - 13427 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13428 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13430 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13435 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13440 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13441 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13442 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13443 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13444 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13445 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13446 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13447 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13448 Form Letter 1 Individual/Orthopaedic Consultants EPA -HQ - OAR- 2009 - 0517 - 13449 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 051 7 - 13450 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13451 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13452 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13453 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13454 Form Letter 18 Individual EPA -H Q - OAR- 2009 - 0517 - 13455 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13456 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13457 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13458 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 358 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13459 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13460 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13461 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13462 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13463 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13465 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13466 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13467 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13468 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13478 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13482 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 13483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13487 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 13488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13496 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 359 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 13497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13520 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13521 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13522 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13523 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13529 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 13530 General Comment Individual/Form B. Music LLC EPA -HQ - OAR- 2009 - 0517 - 13531 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 13532 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13533 Form Letter 15 Individual EPA -HQ - OAR- 20 09 - 0517 - 13534 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 360 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13538 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13541 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13542 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13543 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13544 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13545 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13546 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 13547 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13552 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13559 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13560 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13561 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13565 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13566 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 13567 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13568 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13569 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13572 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 361 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13576 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13585 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 13586 Form Letter 25 Powershift West EPA -HQ - OAR- 2009 - 0517 - 13587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13589 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13610 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 362 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13617 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13622 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13627 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13635 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13636 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13638 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13639 Form Letter 18 Individual/Clean Air Coalition of Western New York EPA -HQ - OAR- 2009 - 0517 - 13640 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13641 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13642 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13643 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13648 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 363 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13649 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13654 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13659 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13668 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 13669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13673 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13686 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 364 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 137 01 General Comment Individual/Environmental Stewardship EPA -HQ - OAR- 2009 - 0517 - 13702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13708 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13709 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13724 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 365 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13737 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13742 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13747 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13749 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13751 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 13752 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13753 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13754 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13755 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13756 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13757 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13758 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13759 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13760 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13761 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13762 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 366 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13 766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13784 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 13785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13786 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13787 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13788 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13789 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 13790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13 794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13800 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 367 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13812 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 13813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13821 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 13822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13831 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 13832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13835 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13838 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 368 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13863 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13868 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 13869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13873 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13876 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 369 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13881 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13882 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 13883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13887 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13889 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13914 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 370 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 139 15 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13919 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 13920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 3929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13934 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 13935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13936 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13939 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13947 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 13948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13950 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13952 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 371 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13956 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 13957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13961 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13966 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 13967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13970 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 13971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13990 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 372 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 13991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 13998 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 13999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14002 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14003 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 14004 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14008 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14017 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 14018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14022 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14025 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14026 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 14027 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 14028 Form Letter 12 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 373 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14029 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 14030 Form Letter 12 Individual EPA -HQ - OAR- 2009 - 0517 - 14031 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 14032 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 14033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14040 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 14041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14043 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 14044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14052 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 14053 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 14054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14066 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 374 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14068 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 14069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14073 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 14074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14078 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14081 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14087 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 14088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14091 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14092 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14093 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14104 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 375 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 141 20 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14124 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 14125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14128 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 4134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14142 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 376 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14157 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 14158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14160 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14161 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 14162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14180 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 377 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14189 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 14190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14194 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 14195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14202 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14203 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 14204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14218 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 3 78 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14231 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 14232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1424 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14 255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14256 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 379 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14264 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14273 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 14274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14282 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 14283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14291 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14292 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 14293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14294 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 380 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14296 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 14297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14300 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14301 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14304 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14310 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14319 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14324 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 14325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14329 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 14330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14332 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 381 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14334 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14343 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 14344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14346 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14348 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14370 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 382 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 143 76 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14380 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 14381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 4390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14408 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 383 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14413 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 14414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14417 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 14418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14425 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14430 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14435 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14441 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14445 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 14446 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 384 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14450 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 14451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14457 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14459 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 14460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14467 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 14468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14469 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 14470 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 14471 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 14472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14473 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 14474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14478 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 14479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14484 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 385 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14487 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 14488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14515 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 14516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14522 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 386 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14523 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1452 5 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14 539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14557 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 14558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14560 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 387 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14566 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 14567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14576 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 14577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14580 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 14581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14598 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 388 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14608 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 14609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14613 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 14614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14618 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14627 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 14628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14632 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14636 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 389 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14639 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 146 60 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14664 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 14665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 4674 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 390 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14697 Unique Com ment Oxbow Mining, LLC, Elk Creek Mine EPA -HQ - OAR- 2009 - 0517 - 14698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14708 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14710 Unique Comment National Black Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 14711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14712 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 391 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14720 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 14721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 147 43 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14747 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 14748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14750 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 392 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 4757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14760 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14762 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14780 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 14781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14784 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 14785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14788 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 393 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14796 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 14797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14798 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 14799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14826 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 394 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 20 09 - 0517 - 14827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14831 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 14832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14836 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14845 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 14846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14850 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14863 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14864 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 395 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14873 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 148 78 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14881 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14882 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 14883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14889 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 4892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14902 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 396 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14914 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14915 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 14916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14919 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 14920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14936 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14939 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14940 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 397 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14947 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 14948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14950 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14952 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 14953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14961 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 14962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14978 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 398 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 14979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14989 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 14990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 14998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1499 9 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15002 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15003 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15004 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15008 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15 013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15016 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 399 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15022 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15025 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15026 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15031 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 15032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15040 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 15041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15043 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15050 Unique Co mment Greater Elkhart Chamber of Commerce EPA -HQ - OAR- 2009 - 0517 - 15051 Unique Comment Knife River Corporation/MDU Resources Group EPA -HQ - OAR- 2009 - 0517 - 15052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15053 Form Letter 19 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 400 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0 517 - 15054 Unique Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15055 General Comment Individual/Small Business Owner EPA -HQ - OAR- 2009 - 0517 - 15056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15062 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 15063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15067 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 15068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15076 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 15077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15081 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15084 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 15085 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 15086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15090 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 15091 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 401 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15093 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15118 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 15119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1512 8 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15129 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 402 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15 142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15160 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 15161 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15167 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 403 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15169 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 15170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15179 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 15180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15183 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 15184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15202 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15205 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 404 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15211 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 15212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15216 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 15217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15221 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15230 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 15231 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15235 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15243 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 405 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 152 63 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15264 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15267 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 15268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 5277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15281 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 406 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15291 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15292 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15300 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 15301 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15304 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 15305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15310 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15319 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 407 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15332 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 15333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15337 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 15338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15346 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 15347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15357 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 408 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15374 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 15375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1538 4 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15395 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 409 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15 398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15416 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 15417 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15425 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 15426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15430 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15433 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 410 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15435 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 15436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15439 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 15440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15441 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15446 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15457 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15459 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15467 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 15468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15471 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 411 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15472 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 15473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15477 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15478 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15486 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 15487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15491 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15509 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 412 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 155 19 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15523 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 15524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 5533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15547 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 413 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15556 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 15557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15560 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 15561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15585 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 414 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15588 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 15589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15593 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 15594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15602 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 15603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15623 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 415 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15630 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 15631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15639 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1564 0 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15 654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15661 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 416 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15672 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 15673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15681 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 15682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15691 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 15692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15695 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 15696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15699 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 417 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15708 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15723 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 15724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15728 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 15729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15733 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15737 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 418 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15742 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 15743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15747 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15760 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15762 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 157 75 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 419 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15779 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 15780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15788 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 5789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15812 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 15813 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 420 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15816 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 15817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15831 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15844 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 15845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15849 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 15850 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 15851 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 421 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15858 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 15859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15863 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 15864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15868 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15873 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15877 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 15878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15881 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15882 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15889 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 422 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 159 10 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15914 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 15915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15919 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 5924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15927 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 423 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 15928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15936 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15939 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15947 Unique Com ment Individual EPA -HQ - OAR- 2009 - 0517 - 15948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15950 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15951 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 15952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15961 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 15962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15965 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 424 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0 517 - 15966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15993 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 15994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 15998 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 15999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16002 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16003 Gen eral Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 425 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16004 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16008 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16012 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 16013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16017 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16022 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16025 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16026 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16031 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16041 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 426 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16043 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 160 45 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16049 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16053 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 6059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16079 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 427 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16081 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 16082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16086 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 16087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16091 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16093 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16096 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 16097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16100 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 16101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16115 General Comment Individual/Vice Mayor of Saratoga, CA EPA -HQ - OAR- 2009 - 0517 - 16116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16117 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 428 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 161 19 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16123 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16128 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 6133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16155 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 429 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16156 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 16157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16160 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 16161 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16181 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16188 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 16189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16193 General Comment Individ ualDraft – Do Not Cite or Quote April 22 , 2010



### A - 430 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16202 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 16203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16222 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16230 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 16231 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 431 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1624 0 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16 254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16264 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16269 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 432 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16272 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 16273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16281 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 16282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16291 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 16292 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16295 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 16296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16300 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16301 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 16302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16304 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16305 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 16306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16307 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 433 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16309 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 16310 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16319 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16336 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16343 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16345 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 434 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16346 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16351 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 16352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16356 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 16357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16361 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16370 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 16371 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16372 Unique Comment Individual/Pronghorn Photography EPA -HQ - OAR- 2009 - 0517 - 16373 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16374 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16383 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 435 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16388 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 16389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1639 8 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16409 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16411 Unique Comment Portland Cement Association EPA -HQ - OAR- 2009 - 0517 - 16412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16417 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 164 21 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 436 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16425 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16430 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16 435 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16439 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16441 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16446 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 6449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16457 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16459 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 437 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16465 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16467 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 16468 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16478 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16486 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 16487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16490 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 16491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16497 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 438 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16518 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 16519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16523 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 16524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16532 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 16533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16535 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 439 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16560 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 16561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1657 0 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16573 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 440 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16 584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16599 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16602 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 16603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16611 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 441 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 051 7 - 16612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16621 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 16622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16625 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 16626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16639 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16649 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 442 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16653 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 16654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16658 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 16659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16663 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16672 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 16673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16675 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16677 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16687 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 443 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16701 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 167 05 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16706 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16708 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16709 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 6719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16721 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 16722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16725 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 444 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16737 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 16738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16746 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 16747 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16756 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 16757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16760 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 16761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16762 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16763 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 445 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16788 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 16789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16790 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16793 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 16794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16798 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16801 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 446 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16807 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 16808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16812 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16831 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16839 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 447 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 168 40 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16844 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 16845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 6854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16863 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16869 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16873 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16877 General Co mment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 448 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16881 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 16882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16889 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16901 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16909 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 16910 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16911 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16912 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16913 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16914 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16915 Form Letter 18 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 449 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16916 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16917 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16918 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16919 Form Letter 1 8 Individual EPA -HQ - OAR- 2009 - 0517 - 16920 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16921 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16922 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16923 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16924 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16925 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16926 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16927 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16928 Form Letter 18 Individual EPA -HQ - OAR- 2 009 - 0517 - 16929 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16930 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16931 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16932 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16933 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16934 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16935 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16936 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16937 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16938 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16939 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 16940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16947 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 16948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16950 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16953 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 450 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16956 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 16957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16961 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16966 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 16967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16970 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 16971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16991 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 451 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 16992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 16998 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 16999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17002 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17003 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 17004 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17008 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17017 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 17018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17022 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17025 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17026 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17029 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 452 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17031 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17043 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 170 50 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17053 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17054 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 17055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 7064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17067 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 453 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17081 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17087 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 17088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17091 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 17092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17093 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17097 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17101 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17105 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 454 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17119 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 17120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17124 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 17125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17128 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17129 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17131 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17133 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 17134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17139 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17143 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 455 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17148 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17153 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17160 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17161 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 17162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17169 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1717 1 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17181 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 456 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17 185 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17202 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17203 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 17204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17207 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17212 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 17213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17218 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17219 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 457 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17222 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 17223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17226 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 17227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17231 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17245 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17250 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17254 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 17255 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17257 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 458 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17259 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 17260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17264 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17273 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 17274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17278 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17283 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17291 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17292 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17295 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 459 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17300 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17301 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17302 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17304 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 173 06 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17310 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 17311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17319 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 7320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17321 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17333 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 460 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17334 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17343 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 17344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17346 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17347 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 17348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17353 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17357 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17359 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17371 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 461 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17375 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 17376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17380 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 17381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17385 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17389 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 17390 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17395 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17397 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17404 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17409 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 462 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17417 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 17418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17425 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1742 7 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17430 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17435 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17437 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17 441 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 17442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17446 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17447 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 46 3 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17451 Unique Comment Van Hooser & Eftink, P.C. EPA -HQ - OAR- 2009 - 0517 - 17452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17457 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17459 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17467 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17473 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17474 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 174 78 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17482 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 17483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17485 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 464 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 7492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17506 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17511 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17515 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 17516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17519 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 17520 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17523 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 465 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17547 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 17548 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17549 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17552 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 17553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17558 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17560 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17561 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 466 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2 009 - 0517 - 17562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17587 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17589 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 17590 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1759 9 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 467 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17609 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17 613 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17625 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17631 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 17632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17637 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 468 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17639 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17640 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 17641 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17646 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17650 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 17651 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17654 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 17655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17660 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17663 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17665 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17675 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 469 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17682 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 17683 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17687 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 17688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17692 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17693 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17701 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 17702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17706 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17707 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17708 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17713 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 470 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 177 34 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17738 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 17739 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17747 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 7748 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17751 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 471 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17758 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17760 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17761 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17762 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17763 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17764 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17767 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17771 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 17772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17775 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 17776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17777 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17781 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17784 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17785 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17786 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17788 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17789 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 472 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17790 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 17791 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 17792 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17793 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17794 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17796 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17797 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17799 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17800 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17801 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17809 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17815 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17817 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 17818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17822 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 17823 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17827 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 473 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17831 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 17832 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17833 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17834 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17836 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17837 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17838 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17840 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17841 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17843 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17844 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17845 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17847 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17848 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17851 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17852 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17853 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17854 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17856 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17857 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17858 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17859 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 17860 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17863 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17865 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 474 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1786 9 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17870 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17871 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17872 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17873 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17874 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17879 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17880 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17881 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17 883 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17884 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17886 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17887 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17888 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17889 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17891 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17892 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17900 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17901 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 17902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17903 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 475 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17904 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17905 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17906 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17907 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17908 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17909 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17910 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 17911 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17914 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17918 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17919 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17920 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 17921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17924 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 17925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17926 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17929 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17931 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17936 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17938 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17939 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17940 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17941 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 476 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17943 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17945 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17946 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17947 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17949 Form Letter 22 Unknown EPA -HQ - OAR- 2009 - 0517 - 17950 Form Letter 23 Unknown EPA -HQ - OAR- 2009 - 0517 - 17951 Form Letter 24 Unknown EPA -HQ - OAR- 2009 - 0517 - 17952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1795 3 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17954 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17961 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17 967 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17979 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 477 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 17980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17982 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17985 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 17986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17987 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17992 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17994 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 17995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17996 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17997 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17998 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 17999 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18000 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18002 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18003 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18004 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18005 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18008 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 18009 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18010 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18011 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18013 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18014 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18017 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 478 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18020 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18021 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18022 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18023 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18024 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18025 Unique Comment State of Arizona EPA -HQ - OAR- 2009 - 0517 - 18026 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18027 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18029 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18030 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18031 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18036 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18043 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1804 6 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18053 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18055 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 479 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18057 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18 060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18078 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 18079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18080 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18081 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18087 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18091 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18092 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18093 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 480 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18094 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18095 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18096 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18097 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18098 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18099 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18100 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18101 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 18102 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18104 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18105 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18106 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18107 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18109 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18112 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18113 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18114 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18115 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18116 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18117 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18118 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18119 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18120 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18121 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18122 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18123 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18124 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18126 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18128 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18129 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 18130 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18131 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 481 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18132 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18133 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18134 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 18135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18136 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18137 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18138 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18139 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18141 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18142 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18144 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18145 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18146 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18147 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18148 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 18149 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18150 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18151 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18152 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18153 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18154 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18155 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18156 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18157 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18158 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18159 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18160 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18161 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18162 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18163 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18164 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18165 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18166 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18167 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18168 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18169 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 482 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18170 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18171 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18172 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18173 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18174 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18175 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18176 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18177 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18178 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18179 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18180 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 181 81 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18182 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18183 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18184 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18185 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 18186 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18187 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18188 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18189 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18190 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18191 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18192 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18193 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18194 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 8195 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18196 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18197 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18198 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18199 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18200 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18201 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18202 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18203 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18204 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18205 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18206 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18207 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 483 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18208 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18209 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18210 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18211 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18212 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18213 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18214 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18215 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18216 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18217 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18218 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 18219 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18220 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18221 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18222 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 18223 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18224 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18225 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18226 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18227 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18228 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18229 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18230 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18231 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18232 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18233 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18234 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18235 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18236 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18237 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18238 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18239 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18240 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18241 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18242 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18243 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18244 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18245 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 484 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18246 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18247 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18248 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18249 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18250 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 18251 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18252 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18253 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18254 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18255 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 18256 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18257 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18258 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18259 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18260 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18261 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18262 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18263 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18264 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 18265 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18266 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18267 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18268 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18269 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18270 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18271 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18272 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18273 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18274 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18275 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18276 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18277 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18278 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18279 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18280 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18281 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18282 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18283 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 485 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18284 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18285 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18286 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18287 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18288 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18289 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18290 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18291 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18292 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18293 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18294 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18295 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18296 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18297 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18298 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18299 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18300 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18301 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1830 2 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18303 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18304 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18305 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18306 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18307 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18308 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18309 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18310 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18311 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18312 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18313 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18314 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18315 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18 316 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18317 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18318 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18319 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18320 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18321 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 486 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18322 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18323 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18324 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18325 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18326 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18327 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18328 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18329 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18330 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18331 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18332 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18333 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18334 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 18335 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18336 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18337 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18338 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18339 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18340 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18341 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18342 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18343 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18344 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18345 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18346 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18347 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18348 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18349 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18350 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18351 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18352 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18353 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18354 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18355 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18356 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18357 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 18358 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18359 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 487 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18360 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18361 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18362 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18363 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18364 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18365 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18366 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18367 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18368 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18369 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18370 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18371 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18372 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18373 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18374 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18375 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18376 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18377 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18378 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18379 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18380 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18381 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18382 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18383 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18384 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18385 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 18386 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18387 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18388 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18389 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18390 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 18391 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18392 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18393 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18394 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18395 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18396 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18397 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 488 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18398 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18399 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18400 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18401 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18402 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18403 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18404 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 18405 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18406 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18407 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18408 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18409 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18410 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18411 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18412 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18413 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18414 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18415 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18416 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18417 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18418 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18419 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18420 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18421 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18422 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18423 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18424 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18425 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18426 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18427 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18428 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18429 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18430 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18431 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18432 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18433 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18434 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18435 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 489 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18436 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 184 37 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18438 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18439 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18440 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18441 General Comment Individual EPA -H Q - OAR- 2009 - 0517 - 18442 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18443 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18444 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18445 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18446 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18447 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18448 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18449 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18450 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 8451 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18452 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18453 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18454 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18455 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18456 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18457 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18458 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18459 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18460 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18461 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18462 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18463 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18464 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18465 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18466 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18467 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18468 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18469 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18470 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18471 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18472 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18473 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 490 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18474 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 18475 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18476 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18477 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18478 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 18479 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18480 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18481 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18482 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18483 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18484 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18485 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18486 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18487 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18488 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18489 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18490 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18491 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18492 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18493 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18494 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18495 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18496 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18497 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18498 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18499 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18500 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18501 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18502 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18503 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18504 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18505 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18506 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 18507 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18508 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18509 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18510 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18511 General Comment Individ ualDraft – Do Not Cite or Quote April 22 , 2010



### A - 491 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18512 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18513 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18514 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18515 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18516 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18517 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18518 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18519 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18520 General Comment Individual EPA -HQ - OAR- 2 009 - 0517 - 18521 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18522 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18523 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18524 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18525 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18526 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18527 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18528 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18529 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18530 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18531 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18532 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18533 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18534 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18535 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18536 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18537 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18538 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18539 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18540 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18541 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18542 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18543 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18544 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18545 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18546 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18547 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18548 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18549 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 492 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18550 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18551 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18552 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18553 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18554 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18555 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18556 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18557 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1855 8 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18559 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18560 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18561 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18562 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18563 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18564 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18565 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18566 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18567 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18568 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18569 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18570 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18571 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18 572 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18573 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18574 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18575 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18576 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18577 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18578 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18579 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18580 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18581 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18582 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18583 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18584 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18585 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18586 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18587 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 493 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18588 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18589 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18590 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 18591 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18592 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18593 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18594 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18595 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18596 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18597 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18598 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18599 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18600 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18601 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18602 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18603 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18604 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18605 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18606 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18607 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18608 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18609 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18610 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18611 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18612 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18613 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 18614 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18615 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18616 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18617 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18618 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18619 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18620 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18621 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18622 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18623 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18624 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18625 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 494 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18626 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18627 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18628 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18629 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18630 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18631 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18632 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18633 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18634 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18635 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18636 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18637 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18638 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18639 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18640 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18641 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 18642 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18643 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18644 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18645 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18646 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 18647 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18648 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18649 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18650 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18651 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18652 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18653 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18654 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18655 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18656 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18657 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18658 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18659 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18660 General Comment Indi vidual EPA -HQ - OAR- 2009 - 0517 - 18661 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18662 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18663 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 495 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18664 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18665 G eneral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18666 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18667 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18668 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18669 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18670 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18671 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18672 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18673 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18674 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18675 Form Letter 16 Individual EPA -HQ - OAR- 2009 - 0517 - 18676 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18677 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18678 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18679 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18680 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18681 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18682 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18683 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18684 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18685 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18686 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18687 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18688 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18689 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18690 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18691 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18692 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1869 3 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18694 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18695 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18696 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18697 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18698 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18699 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18700 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18701 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 496 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18702 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18703 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18704 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18705 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18706 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 1870 7 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18708 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18709 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18710 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18711 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18712 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18713 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18714 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18715 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18716 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18717 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18718 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18719 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18720 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18 721 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18722 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18723 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18724 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18725 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18726 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18727 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18728 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18729 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18730 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18731 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18732 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18733 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18734 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18735 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18736 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18737 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18738 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18739 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 497 Docket ID Letter Type 1 Organization EP A -HQ - OAR- 2009 - 0517 - 18740 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18741 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18742 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18743 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18744 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18745 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18746 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18747 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18748 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18749 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18750 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18751 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18752 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18753 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18754 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18755 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18756 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18757 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18758 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18759 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18760 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18761 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18762 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18 763 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18764 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18765 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18766 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18767 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18768 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18769 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18770 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18771 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18772 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18773 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18774 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18775 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18776 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1877 7 Form Letter 7 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 498 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18778 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18779 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18780 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18781 General Comment Individual EPA -HQ - O AR- 2009 - 0517 - 18782 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18783 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18784 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18785 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18786 Form Letter 2 Individ ual EPA -HQ - OAR- 2009 - 0517 - 18787 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18788 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18789 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18790 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18791 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18792 Form Letter 2 Individual EPA -HQ - OAR- 2009 - 0517 - 18793 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18794 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18795 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 1 8796 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18797 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18798 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18799 Form Letter 4 National Association of Manufacturers EPA -HQ - OAR- 2009 - 0517 - 18800 Form Lett er 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18801 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18802 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18803 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18804 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18805 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18806 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18807 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18808 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18809 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 18810 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18811 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18812 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18813 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18814 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18815 Form Letter 1 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 499 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18816 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18817 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18818 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18819 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18820 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18821 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18822 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18823 General Comment Individual EP A -HQ - OAR- 2009 - 0517 - 18824 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18825 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18826 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18827 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18828 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18829 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18830 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18831 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18832 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18833 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18834 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18835 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18836 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18837 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18838 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18839 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18840 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18841 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18842 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18843 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 18844 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18845 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18846 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18847 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18848 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18849 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18850 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18851 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18852 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18853 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 500 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18854 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 18855 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18856 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 18857 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18858 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18859 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18860 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18861 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18862 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18863 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18864 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18865 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18866 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18867 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18868 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18869 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18870 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18871 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 18872 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18873 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18874 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18875 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18876 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18877 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18878 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18879 General Comment Individual EPA -HQ - OAR- 2009 - 051 7 - 18880 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18881 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18882 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18883 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18884 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18885 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18886 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18887 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 18888 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18889 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18890 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18891 Form Letter 13 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 501 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18892 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18893 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18894 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18895 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18896 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18897 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18898 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18899 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18900 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18901 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18902 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18903 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18904 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18905 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18906 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18907 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18908 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 18909 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18910 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18911 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18912 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18913 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18914 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18915 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18916 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18917 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18918 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18919 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18920 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18921 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18922 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18923 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18924 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18925 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18926 General Comment Individual EPA -HQ - OAR- 200 9 - 0517 - 18927 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18928 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18929 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 502 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18930 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18931 General Comment Individ ual EPA -HQ - OAR- 2009 - 0517 - 18932 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18933 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18934 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18935 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18936 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18937 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18938 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18939 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18940 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18941 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18942 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18943 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 18944 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18945 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18946 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 18947 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18948 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18949 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18950 General C omment Individual EPA -HQ - OAR- 2009 - 0517 - 18951 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18952 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18953 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18954 General Comment Individual EPA -HQ - OAR- 2009 - 0 517 - 18955 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18956 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18957 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18958 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18959 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18960 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18961 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18962 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18963 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18964 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18965 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18966 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18967 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 503 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 18968 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18969 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18970 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18971 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18972 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18973 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18974 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18975 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18976 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18977 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18978 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18979 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18980 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18981 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18982 General Comment Individual EPA -HQ - OAR- 20 09 - 0517 - 18983 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18984 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18985 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18986 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18987 General Comment Indivi dual EPA -HQ - OAR- 2009 - 0517 - 18988 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18989 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18990 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18991 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18992 Gen eral Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18993 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18994 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18995 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 18996 Form Letter 14 Individual EPA -HQ - OAR- 2 009 - 0517 - 18997 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18998 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 18999 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 19000 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19001 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19002 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19003 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19004 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19005 Form Letter 14 IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 504 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 19006 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19007 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19008 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19009 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19010 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 19 011 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19012 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19013 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19014 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19015 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19016 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19017 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19018 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19019 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19020 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 19021 Form Letter 7 Individual EPA -HQ - OAR- 2009 - 0517 - 19022 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19023 Form Letter 15 Individual EPA -HQ - OAR- 2009 - 0517 - 19024 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19025 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19026 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19027 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19028 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19029 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19030 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19031 Form Letter 19 Individual EPA -HQ - OAR- 2009 - 0517 - 19032 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19033 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19034 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19035 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19036 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19037 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19038 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19039 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19040 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19041 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19042 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19043 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 505 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 19044 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19045 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19046 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19047 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19048 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19049 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19050 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19051 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19052 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19053 General Co mment Individual EPA -HQ - OAR- 2009 - 0517 - 19054 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19055 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19056 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19057 General Comment Individual EPA -HQ - OAR- 2009 - 05 17 - 19058 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19059 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19060 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19061 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19062 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19063 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19064 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19065 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19066 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19067 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19068 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19069 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19070 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19071 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19072 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19073 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19074 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19075 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19076 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19077 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19078 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19079 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19080 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19081 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 506 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 19082 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19083 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19084 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19085 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19086 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19087 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19088 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19089 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19090 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19091 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19092 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19093 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19094 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19095 Form Lett er 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19096 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19097 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19098 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19099 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 1 9100 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19101 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19102 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19103 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19104 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19105 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19106 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19107 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19108 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19109 Form Letter 18 Indi vidual EPA -HQ - OAR- 2009 - 0517 - 19110 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19111 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19112 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19113 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19114 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19115 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19116 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19117 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19118 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19119 General Comment IndividualDraft – Do Not Cite or Quote April 22 , 2010



### A - 507 Docket ID Letter Type 1 Organization EPA -HQ - OAR- 2009 - 0517 - 19120 Form Letter 6 Individual EPA -HQ - OAR- 2009 - 0517 - 19121 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19122 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19123 Form Letter 18 Individual EP A -HQ - OAR- 2009 - 0517 - 19124 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19125 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19126 Form Letter 18 Individual EPA -HQ - OAR- 2009 - 0517 - 19127 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19128 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19129 Unique Comment State of Arizona EPA -HQ - OAR- 2009 - 0517 - 19131 Unique Comment Ohio House of Representatives, 49th House District EPA -HQ - OAR- 2009 - 0517 - 19132 Form Letter 14 Individual EPA -HQ - OAR- 2009 - 0517 - 19133 Form Letter 3 Individual EPA -HQ - OAR- 2009 - 0517 - 19134 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19135 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19136 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19137 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19138 Form Letter 13 Individual EPA -HQ - OAR- 2009 - 0517 - 19139 Unique Comment Spectra Energy Corporation EPA -HQ - OAR- 2009 - 0517 - 19140 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19141 Form Letter 1 Individual EPA -HQ - OAR- 2009 - 0517 - 19142 Unique Comment Southeast Wastewater Practice Leader, Brown and Caldwell EPA -HQ - OAR- 2009 - 0517 - 19143 General Comment Individual EPA -HQ - OAR- 2009 - 0517 - 19144 Unique Comment Kansas Department of Health and Environment (KDHE)