# E.O. 12866 Review 2060-AQ-42 Email 011911 +1 att.txt

From: Dave Guinnup/RTP/USEPA/US

To: Cortney_Higgins@omb.eop.gov, nancy beck <nbeck@omb.eop.gov>

Cc: Sharon Nizich/RTP/USEPA/US@EPA, Michael Stewart/RTP/USEPA/US@EPA

Date: 01/19/2011 08:19 AM

Subject: Part of E.O. 12866 Review: EPA Staff Response to OMB questions and

additional followup

pertaining to Primary Lead RTR: RIN 2060-AQ42

Attachments: SLS_amb_source_matrix.xls

Cortney, Nancy:

Here is some additional info you requested on primary lead. The spreadsheet

shows the overlaps of the maximum impacts for each of the 4 major emissions points (the raw data sheet shows the monthly concentration estimates for each emission point that went into calculating the max 3-month rolling average).

Based on our re-examination of this information, we note that the furnace and

the refinery max impacts coincide, meaning that their respective emissions

caps need to reflect that. As a result, we have re-calculated the caps for

those 2 emission points and they are lower. The others show very little

overlap as originally stated, with the max main stack impact occurring about a

kilometer from the stack. We will need to edit the preamble and risk report

to reflect this.

Dave Guinnup

Leader, Air Toxics Assessment Group

Health and Environmental Impacts Division Office of Air Quality Planning and Standards US EPA (C539-02) Research Triangle Park, NC 27711

(919)-541-5368 voice

(919)-541-0840 FAX

----- Forwarded by Dave Guinnup/RTP/USEPA/US on 01/19/2011 08:12 AM

-----

From: Michael Stewart/RTP/USEPA/US

To: Dave Guinnup/RTP/USEPA/US@EPA

Date: 01/18/2011 03:54 PM

Subject: Information on overlapping lead sources and Main Stack

emissions for OMB

Attached below is the file looking at the contributions of each source at the

Page 1

# E.O. 12866 Review 2060-AQ-42 Email 011911 +1 att.txt

site of maximum lead concentration resulting from the main stack,

refinery stack, furnace stack, and fugitives. Based on this

information we calculated new caps of 0.55 for the refinery and 0.36 for the

furnace

Also, for the main stack the max concentration is 0.0007 ugs/m3. It

occurs at census block 290997007002007, with latitude 38.25947 and longitude -

90.38779. That is about 1000 m away from the main stack.

Michael J. Stewart, Ph.D.

Environmental Protection Specialist

Health and Environmental Impacts Division U.S. Environmental Protection Agency

Research Triangle Park, NC 27711

(919) 541-7524

stewart.michael@epa.gov

Page 2

# Main

stack Refinery Furnace Fugitives Total

Main stack 0.0076 0.0276 0.0189 0.6664 0.7205

Refinery 0.0054 0.4363 0.3142 0.1122 0.8681

Furnace 0.0054 0.4363 0.3142 0.1122 0.8681

Fugitives 0.0005 0.0329 0.0180 7.3696 7.4210 Contributions by source (ug/m3) At receptor of

maximum impact

for:SourcestudiedMaxquarterlyimpactforthissource blockpopu‐lation lat lon1stmoofmaxqtrOthersourcesbyrollingquarter cq_01_03 cq_02_04 cq_03_05 cq_04_06 cq_05_07 cq_06_08 cq_07_09 cq_08_10 cq_09_11 cq_10_12 cq_11_01 cq_12_02 newemis oldemisFugitives 7.369626838 0 38.2572194‐90.3756372 8 Fugitives 3.005490581 3.258970047 3.221792576 3.000600626 3.56820907 4.374919172 6.644675277 7.369626838 7.148291578 5.952803581 4.406764111 3.85856674 0 0Fugitives 7.369626838 0 38.2572194‐90.3756372 8 Furnace 0.069152808 0.048084542 0.025989138 0.018431674 0.012718441 0.011576891 0.01492743 0.017950891 0.027180118 0.0515888030.075346841 0.089354568 0 0Fugitives 7.369626838 0 38.2572194‐90.3756372 8 Mainstack 5.532E‐05 9.10845E‐05 0.000233009 0.000341123 0.000657345 0.000723179 0.000853987 0.00050006 0.000270622 1.45677E‐05 1.6509E‐05 3.81882E‐05 0 0Fugitives 7.369626838 0 38.2572194‐90.3756372 8 Refinery 0.109852639 0.077816577 0.045152819 0.033596118 0.026246088 0.024201077 0.029306833 0.032888309 0.044821707 0.081373442 0.117178059 0.13995343 0 0Furnace 0.314203156 29099700601403114 38.268786‐90.379326 8 Fugitives 0.093982048 0.077749201 0.076516951 0.102263682 0.089813577 0.080332538 0.069388406 0.112171074 0.123437633 0.123792206 0.109692491 0.10913922 0 0Furnace 0.314203156 29099700601403114 38.268786‐90.379326 8 Furnace 0.147650105 0.160215795 0.158036902 0.205148475 0.174737524 0.205849316 0.180579782 0.314203156 0.296134869 0.2808781060.165099993 0.154235381 0 0Furnace 0.314203156 29099700601403114 38.268786‐90.379326 8 Mainstack 0.000968221 0.001649289 0.004481537 0.006627426 0.006891814 0.00609964 0.005527193 0.005412234 0.00316091 0.001320334 0.000489837 0.000701088 0 0Furnace 0.314203156 29099700601403114 38.268786‐90.379326 8 Refinery 0.210469242 0.228284054 0.223569017 0.28835282 0.244156587 0.286045846 0.250856245 0.436327379 0.4133517 0.39352314 0.234433427 0.220234884 0 0Mainstack 0.007558665 2909970070020079 38.259247‐90.38779 7 Fugitives 0.303715187 0.3109087 0.363542414 0.322846187 0.520767405 0.549799126 0.666367751 0.502746173 0.397499127 0.318484663 0.276991509 0.30057312 0 0Mainstack 0.007558665 2909970070020079 38.259247‐90.38779 7 Furnace 0.010769776 0.007171635 0.010210076 0.00979877 0.015567351 0.018253825 0.018939966 0.013728032 0.010402191 0.010165974 0.013207468 0.010808393 0 0Mainstack 0.007558665 2909970070020079 38.259247‐90.38779 7 Mainstack 0.001082404 0.001920065 0.002573496 0.00329729 0.004082107 0.006217239 0.007558665 0.006627025 0.003440706 0.001160699 0.000469861 0.000867618 0 0Mainstack 0.007558665 2909970070020079 38.259247‐90.38779 7 Refinery 0.016823539 0.012000755 0.016325967 0.0153741 0.023079299 0.026772897 0.02764366 0.020068933 0.015650539 0.015295523 0.019987835 0.01638742 0 0Refinery 0.436327379 29099700601403114 38.268786‐90.379326 8 Fugitives 0.093982048 0.077749201 0.076516951 0.102263682 0.089813577 0.080332538 0.069388406 0.112171074 0.123437633 0.123792206 0.109692491 0.10913922 0 0Refinery 0.436327379 29099700601403114 38.268786‐90.379326 8 Furnace 0.147650105 0.160215795 0.158036902 0.205148475 0.174737524 0.205849316 0.180579782 0.314203156 0.296134869 0.2808781060.165099993 0.154235381 0 0Refinery 0.436327379 29099700601403114 38.268786‐90.379326 8 Mainstack 0.000968221 0.001649289 0.004481537 0.006627426 0.006891814 0.00609964 0.005527193 0.005412234 0.00316091 0.001320334 0.000489837 0.000701088 0 0Refinery 0.436327379 29099700601403114 38.268786‐90.379326 8 Refinery 0.210469242 0.228284054 0.223569017 0.28835282 0.244156587 0.286045846 0.250856245 0.436327379 0.4133517 0.39352314 0.234433427 0.220234884 0 0