### A- 1

**Ap pendix A**  **Table A 1.**  **Respondents and Other A ssumption**  **s Description**  **Number Source** 

Annual Number of Construction Starts > 1 acre 84,472 Table 1. Distribution of Model Projects for each Model Project Size and Duration Category for three Project T ypes (Res idential Construction, Nonresidential Construction, and Transportation). [Construction ELG Technical Development Document]

Annual Number of Construction Starts 1 - 4.99 acres 47,969 Table 1. Distribution of Model Projects for each Model Project Size and Duration Category for three Project T ypes (Residential Construction, Nonresidential Construction, and Transportation). [Construction ELG Technical Development Document]

Annual Number of Construction Starts > 5 acres 36,503 Table 1. Distribution of Model Projects for each Model Project Size and Duration Category for three Project T ypes (Residential Construction, Nonresidential Construction, and Transportation). [Construction ELG Technical Development Document] Total Number of Small MS4s Issued by EPA 361 Stormwater Rulemaking MS4 Analysis - EPA Total Number of Small MS4s Issued by Authorized States 6,271 Stormwater Rulemaking MS4 Analysis - EPA

Total Number of Industrial Facilities eligible for the "no exposure" to stormwater waiver from Phase I regulations. 36,377 Economic Analysis of the Final Phase II Stormwater Rule (10/01/1999) as cited in NPDES Stormwater Program Phase II (EPA ICR No 1820.04, OMB Control No. 2040 - 0211) corrected by Jack F a ulk, personal communication. Th 04/08/2008: "I believe the no exposure number is five tim es higher than our current thinking. I would use 36377 as the number of sites covered by a no exposure certification." Reaffirmed by Brian Rittenhouse 9/22/2011. Total Number of Existing Major NPDES Permits - Municip al 4,123 PCS or ICIS Query: Standard (individual) NPDES Municipal Total Number of Existing Minor NPDES Permits - Municipal 9,471 PCS or ICIS Query: Standard (individual) NPDES Municipal Total Number of Existing Sludge Only NPDES Permits - Municipal 954 PCS or ICIS Query: Sludge Only Municipal

### A-2

**Description Number**  **Source** Total Number of Existing Major NPDES Permits - Nonmunicipal 2,036 PCS or ICIS Query: Standard (individual) NPDES Nonmunicipal Total Number of Existing Minor NPDES Permits - Nonmunicipal 28,133 PCS or ICIS Query: Standard (individual) NPDES Nonmunicipal Total Number of Existing Sludge Only NPDES Permits - Nonmunicipal 329 PCS or ICIS Query: Sludge Only Nonmunicipal Total Number of Existing Major NPDES Permits - Federal 80 PCS or ICIS Query: Standard (individ ual) NPDES Federal Total Number of Existing Minor NPDES Permits - Federal 510 PCS or ICIS Query: Standard (individual) NPDES Federal Annual Number of New Major NPDES Permits - Nonmunicipal Industrial 19 PCS or ICIS Query: New STANDARD NPDES in t he previous 3 years Nonmunicipal Annual Number of New Minor NPDES Permits - Nonmunicipal Industrial 785 PCS or ICIS Query: New STANDARD NPDES in the previous 3 years Nonmunicipal Annual Number of New NPDES Permits - Nonmunicipal Stormwater 86 PCS or IC IS Query: New STORMWATER NPDES in last 3 years Nonmunicipal Total Number of Existing NPDES Permits - Nonmunicipal Industrial 30,169 PCS or ICIS Query: Standard (individual) NPDES Nonmunicipal Total Number of Existing NPDES Permits - Nonmunicipal Stormwater (individual Permit) 783 PCS or ICIS Query: STORMWATER (individual) NPDES Nonmunicipal Total Number of NPDES General Permits Issued by EPA (Not permittees covered by general permits, but general permits) 27 PCS or ICIS Query: General Pe rmits (not permittees) Total Number of NPDES General Permits Issued by Authorized States (Not permittees covered by general permits, but general permits) 497 PCS or ICIS Query: General Permits (not permittees) Total Number of Phase I MS4s Permittees (Issued by States) 758 Stormwater Rulemaking MS4 Analysis - EPA Total Number of Phase I MS4s Permittees (Issued by EPA) 12 MS4 Program Implementation - Status of Permit Issuance

### A- 3

**Description Number**  **Source** Total Number of Phase I MS4s Permits (Issued by States) 171 Stormwater Rulemaking MS4 Analysis - EPA Total Number of Phase I MS4s Permits (Issued by EPA) 5 MS4 Program Implementation - Status of Permit Issuance Annual Number of New Permits - Major 89 PCS or ICIS Query: New Standard (individual) NPDES in the previo us 3 ye ars Annual Number of New Permits - Minor 1,518 PCS or ICIS Query: New Standard (individual) NPDES in the previous 3 ye ars Annual Number of New State Issued Permits General 15 PCS or ICIS Query: New general permits (not permittees) in the previous 3 years Total Number of Existing POTW s ≽ 1.0 mgd 3,958 PCS or ICIS Query: SIC 4952 POTW Total Number of Existing POTW s 0.1 - 1.0 mgd 5,354 PCS or ICIS Query: SIC 4952 POTW Total Number of Existing POTW s ≺ 0.1 mgd 3,020 PCS or ICIS Query: SIC 4952 POTW Total Number of Existing POTW s Unknown Flow 1,353 PCS or ICIS Query: SIC 4952 POTW Total Adjusted Number of Existing POTW s ≽ 1.0 mg d 4,391 PCS or ICIS Query: SIC 4952; adjusted to account for facilities without flow information in PCS Total Adjusted Number of Existing POTW s 0.1 - 1.0 mg d 5,942 PCS or ICIS Query: SIC 4952; adjusted to account for facilities without flow information in PCS Total Adjusted Number of Existing POTW s ≺ 0.1 mg d 3,352 PCS or ICIS Query: SIC 4952; adjusted to account for facilities without flow information in PCS Total Number of Existing PrOTW s 3,462 PCS or ICIS Query: SIC 4952 PrOTW Total Number of Industrial stormwater dischargers covered by a Multi - Sector General Permit (MSGP) 89,415 Jack Faulk, personal communication. Tuesday 5/21/2008 5:57 PM. Reaffirmed by Brian Rittenhouse 9/22/2011. Annual Number of Notice of Termination (NOT) from Industrial stormwater dischargers under the Multi Sector General Permit (MSGP) 6,857 Estimate from previous ICR.

### A-4

**Description Number**  **Source** Annual Number of Municipal Sludge Facilities required under their sewage sludge permit conditions to submit Permittee Reports of Planned Facility Changes and Anticipated Noncompliance. 153 Estimate from previous ICR. Annual Number of Nonmunicipal Sludge Facilities required under their sewage sludge permit conditions to submit Permittee Reports of Planned Facility Changes and Anticipated Noncompliance. 10 Estimate from previous ICR. Annual Number of sludge facilities required to submi t Permittee Reports of Inaccurate Previous Information under sewage sludge use or disposal conditions 30 Estimate from previous ICR. Total Number of Non - Stormwater General Permittees (State - issued) 57,058 GPCFs September 2011, excluding GM O&G Pe rmit. From Jackie Clark Total Number of Non - Stormwater General Permittees (EPA- issued) 5,367 GPCFs September 2011, excluding GM O&G Permit. From Jackie Clark Uniform Federal Transportation/Utility System Application Form (Alaskan Lands Applicatio n) 3 Estimate from previous ICR. MS4 Petition for Individual Permit 24 Estimate from previous ICR. Permit Consolidation Request 0 Estimate from previous ICR was 2. Changed by Dave Hair. Notification of Construction Prior to Wastewater Permit Issuance 3 Estimate from previous ICR. NPDES Ocean Discharge Information 30 Estimate from previous ICR.

Total Number of CAFO Permittees 0 Burden for this activity moved to Supporting Statement for the Information Collection Request for Animal Sectors. OMB Control No. 2040 - 0250, EPA ICR No. 1989.07. May 2010 Total Number of CAAP Permittees 0 Burden for this activity moved to Supporting Statement for the Information Collection Request for Animal Sectors. OMB Control No. 2040 - 0250, EPA ICR No. 1989.07. May

2010

### A- 5

**Description Number**  **Source** Annual Number of POTW s required to submit com pliance schedule reports regarding sewage sludge permit conditions 100 Estimate from previous ICR. Annual Number of PrOTW s required to submit com pliance schedule reports regarding sewage slud ge permit conditions 32 Estimate from previous ICR. Annual Number of POTW s required to submit non com pliance reports regarding sewage sludge permit conditions 31 Estimate from previous ICR. Annual Number of PrOTW s required to submit non com pliance rep orts regarding sewage sludge permit conditions 10 Estimate from previous ICR. Annual Number of permittees required to respond to Section 308(a) letters 1,200 Estimate from previous ICR. Total Number of Pesticides Packaging and Repackaging facili ties with certification potential 326 Estimate from previous ICR. Total Number of Aluminum Forming facilities with certification potential 76 Estimate from previous ICR. Total Number of Coil Coating facilities with certification potential 101 Estimate from previous ICR. Total Number of Can Making (subcategory of coil coating) facilities with certification potential 18 Estimate from previous ICR. Total Number of Porcelain Enameling* facilities with certification potential 54 Estimate from previous I CR. Total Number of Pharmaceutical Manufacturing facilities with certification potential 130 Estimate from previous ICR. Total Number of Pulp, Paper, and Paperboard facilities with certification potential 361 Estimate from previous ICR. Total Number of Subpart B, Bleached Papergrade Kraft and Soda facilities with certification potential 74 Estimate from previous ICR. Total Number of Building Paper and Board Mills facilities with certification potential 174 Estimate from previous ICR.

### A- 6

**Description Number**  **Source** Total Number of Steam Electric facilities with certification potential 1,372 Estimate from previous ICR. Total Number of Electroplating** facilities with certification potential 0 Estimate from previous ICR. Total Number of Metal Finishing facilities with certificat ion potential 2,032 Estimate from previous ICR. Total Number of Electrical and Electronic Components facilities with certification potential 86 Estimate from previous ICR. Annual Number of Part 435 Certification of Oil and Gas Extraction 68 Est im ate from previous ICR. Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (AL) 0 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Re mi ning and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (IL) 0 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards fo r the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (IN) 5 Economic and Environmental Impact Assessment of Effluent Limitatio ns Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (KY) 7 Economic and Environmental Impact As sessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (MD) 1 Econom ic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (OH) 21 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coa l Remining at AML with pre - existing discharges (PA) 26 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013).

### A- 7

**Description Number**  **Source** Annual Numb er of sites to be permitted Coal Remining at AML with pre - existing discharges (TN) 9 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (E PA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (VA) 9 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Mining Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Annual Number of sites to be permitted Coal Remining at AML with pre - existing discharges (W V) 0 Economic and Environmental Impact Assessment of Effluent Limitations Guidelines and Standards for the Coal Min ing Industry: Remining and Western Alkaline Subcategories (EPA- 821 - B - 01 - 013). Total Number of Western Alkaline Coal Mining with Sediment Control 46 Need to get from EPA. Original Source: 1998 Keystone Coal Industry Manual (as cited in EPA ICR No. 1944.03 ). These mines are in AZ, CO, MT, NM, ND, UT and WY . All except NM have NPDES authorization. Total number of Subpart B, Bleached Papergrade Kraft and Soda Enrolled in Milestone Plans 29 EPA ICR No. 1877.03 Total Number of Subpart B, Bleached Pape rgrade Kraft and Soda anticipated to Enrolled in Milestone Plans (Tier One Mills) 0 Estimate from previous ICR. Total Number of Subpart B, Bleached Papergrade Kraft and Soda anticipated to Enrolled in Milestone Plans (Tier Two Mills) 0 Estimate from previous ICR. Total Number of Subpart B, Bleached Papergrade Kraft and Soda anticipated to Enrolled in Milestone Plans (Tier Three Mills) 0 Estimate from previous ICR. Total Number of Subpart B Bleached Papergrade Kraft & Soda, Direct Discharging fa cilities 75 Estimate from previous ICR. Total Number of Subpart E Ca / Sodium / Mg Sulfite, Direct Discharging facilities 5 Estimate from previous ICR. Total Number of Subpart E Ammonium Sulfite, Direct Discharging facilities 2 Estimate from previous ICR. Total Number of Subpart E Specialty Grade, Direct Discharging facilities 2 Estimate from previous ICR.

### A- 8

**Description Number**  **Source** Total number of Minor (Municipal) Dischargers not required to report 1,719 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (nonmunicipal) Dischargers not required to report 10,751 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (Municipal) Dischargers that report Monthly 6,56 9 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (nonmunicipal) Dischargers that report Monthly 11,996 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total nu mb er of Minor (Municipal) Dischargers that report Bimonthly 32 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (nonmunicipal) Dischargers that report Bimonthly 119 PCS or ICIS Query: STANDARD (mun icipal and nonmunicipal) minor reporting frequency Total number of Minor (Municipal) Dischargers that report Quarterly 940 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (nonmunicipal) Dischargers that report Quarterly 3,843 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (Municipal) Dischargers that report Semi -Annually 9 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor rep orting frequency Total number of Minor (nonmunicipal) Dischargers that report Semi -Annually 219 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (Municipal) Dischargers that report Annually 202 PC S or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Total number of Minor (nonmunicipal) Dischargers that report Annually 1,205 PCS or ICIS Query: STANDARD (municipal and nonmunicipal) minor reporting frequency Percen t of Non - stormwater General Permittees not required to report 72.6% PCS or ICIS Query: General Permits (non - stormwater) reporting frequency Percent of Non - stormwater General Permittees that report Monthly 7.8% PCS or ICIS Query: General Permits (non - storm water) reporting frequency Percent of Non - stormwater General Permittees that report Bimonthly 0.4% PCS or ICIS Query: General Permits (non - stormwater) reporting frequency

### A- 9

**Description Number**  **Source** Percent of Non - stormwater General Permittees that report Quarterly 9.3% PCS or ICIS Query : General Permits (non - stormwater) reporting frequency Percent of Non - stormwater General Permittees that report Semi -Annually 6.4% PCS or ICIS Query: General Permits (non - stormwater) reporting frequency Percent of Non - stormwater General Permittees that report Annually 3.6% PCS or ICIS Query: General Permits (non - stormwater) reporting frequency Total Number of Domestic Septage Haulers 4,784 Estimate from previous ICR. Sludge Only, Class I Mgmt Facilities (Municipal Biosolids) 113 PC S or ICIS Query: Sludge Only Municipal by Sludge T yp e Sludge Only, Non - Class I Mgmt Facilities (Municipal Biosolids) 1 PCS or ICIS Query: Sludge Only Municipal by Sludge T yp e Sludge Only, Unknown Class Mgmt Facilities (Municipal Biosolids) 840 PCS or ICIS Query: Sludge Only Municipal by Sludge T yp e Sludge Only, Class I Mgmt Facilities (Industrial) 73 PCS or ICIS Query: Sludge Only Nonmunicipal by Sludge T ype Sludge Only, Non - Class I Mgmt Facilities (Industrial) 39 PCS or ICIS Query: Sludge Only No nm unicipal by Sludge T ype Sludge Only, Unknown Class Mgmt Facilities (Industrial Biosolids) 217 PCS or ICIS Query: Sludge Only Nonmunicipal by Sludge T ype Sludge / NPDES POTW s, Class I Sludge Mgmt Facilities 989 PCS or ICIS Query: SIC 4952 (POTW ) by s ludge type Sludge / NPDES POTW s, Non - Class I Sludge Mgmt Facilities 1,070 PCS or ICIS Query: SIC 4952 (POTW ) by sludge type Sludge / NPDES POTW s, Unknown Class Sludge Mgm t Facilities 11,626 PCS or ICIS Query: SIC 4952 (POTW ) by sludge type Sludge / N PDES PrOTW s, Class I Sludge Mgmt Facilities 113 PCS or ICIS Query: SIC 4952 (PrOTW ) by sludge type Sludge / NPDES PrOTW s, Non - Class I Sludge Mgm t Facilities 73 PCS or ICIS Query: SIC 4952 (PrOTW ) by sludge type Sludge / NPDES PrOTW s, Unknown Class Slu dge Mgm t Facilities 3,276 PCS or ICIS Query: SIC 4952 (PrOTW ) by sludge type Total number of Major Municipal facilities in the Great Lakes Watershed 269 PCS or ICIS Great Lakes Queries

### A- 10

**Description Number**  **Source** Total number of Major Nonmunicipal facilities in the Great L akes Watershed 190 PCS or ICIS Great Lakes Queries Total number of Minor Municipal facilities in the Great Lakes Watershed 796 PCS or ICIS Great Lakes Queries Total number of Minor Nonmunicipal facilities in the Great Lakes Watershed 1,068 PCS or ICIS Great Lakes Queries Additional facilities that will require WQ BEL mo nitoring under the Great Lakes Program 176 Assessment of Compliance Costs Resulting from Implementation of the Final Great Lakes Water Quality Guidance (March 13, 1995) Municipal facil ities required to develop approvable control strategies (Pollutant Minimization Programs) under the Great Lakes Program 20 EPA estimate Municipal facilities required to Implement control strategies (Pollutant Minimization Programs) under the Great Lakes Program 170 EPA estimate Nonmunicipal facilities required to develop approvable control strategies (Pollutant Minimization Programs) under the Great Lakes Program 40 EPA estimate Nonmunicipal facilities required to implement approvable control strategi es (Pollutant Minimization Programs) under the Great Lakes Program 250 EPA estimate Annual modification and variance request under the Great Lakes Program 18 Assessment of Compliance Costs Resulting from Implementation of the Final Great Lakes Water Qua lity Guidance (March 13, 1995) Total number of Municipalities with Combined Sewer Systems 746 Personal communication, Mohammed Billah 10/17/2011 Total number of CSO Permits 853 Personal communication, Mohammed Billah 10/17/2011, 11/30/11 CSO permi ts with LTCP Permit Requirements 734 Personal communication, Mohammed Billah 10/17/2011, 11/30/11 Municipalities that will submit NMC documentation in the next 3 years - Sm all 0 Personal communication, Mohammed Billah 10/17/2011, 11/30/11 Municipaliti es that will submit NMC documentation in the next 3 years - Medium 0 Personal communication, Mohammed Billah 10/17/2011, 11/30/11 Municipalities that will submit NMC documentation in the next 3 years - Large 0 Personal communication, Mohammed Billah 10/17/2011, 11/30/11

### A- 11

**Description Number**  **Source** Percentage of Municipalities that Choose Public Notification - Option 1 (Signs at outfalls) 43% Previous CSO Control Policy ICR (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Percentage of Municipalities that Choose Public Notification - Option 2 (Signs at beaches, other public exposure areas) 43% Previous CSO Control Policy ICR (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Percentage of Municipalities that Choose Public Notification - Option 3 (Press or radio advisories) 30% Previous CSO Control Po licy ICR (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Sm all Perm ittees W riting LTCP that have existing studies 8 6.6% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Medium Permittees Writing LTCP that have existing studies 16 1 3.1% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Large Permittees Writing LTCP that have existing studies 5 4.3% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Sm all Perm ittees W riting LTCP that do not have existing studies 71 59.3% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Medium Permittees Writing LTCP that do not have existing studies 15 12.8% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04) Large Permittees Writing LTCP that do not have existing studies 5 3.9% of CSO permits that will submit LTCP (OMB No. 2040 - 0170; EPA ICR No. 1680.04)

### A- 12

**Table A2**  **. Unique Respondents Respondent Type**  **Number** Annual Number of Construction S tarts > 1 acre 84,472 Total Number of Small MS4s 6,632 Total Number of Large/Medium MS4s 770 Total Number of Existing Standard and sludge only Individual NPDES Permits 45,636 Total Number of Industrial stormwater dischargers covered by a Multi - Sector General Permit (MSGP) 89,415 Total Number of Existing NPDES Permits - Nonmunicipal Stormwater (individual Permit) 783 Total Number of Industrial Facilities eligible for the "no exposure" to stormwater waver from Phase I regulations 36,377 Total Number of Non - Stormwater General Permittees 57,058 Total Number of Domestic Septage Haulers 4,784 Total number of Municipalities with Combined Sewer Systems 746 Total number of Vessels 71,030 Total non - state respondents 397,703 Authorized States 47 States. Tribes, territories and DC 637 * * 590 of these 637 states respond to only one information item (certification of EPA- issued permits) [C40]