# Appendix A : Proposed 201 5 NPDES Multi

- Sector General Permit

N ote : T his version of the permit was originally submitted a s an attach ment to the Biological Evaluat io n for the proposed action

. The permit ’s original Appendix E (“ Procedures Relating to Endangered Species Protection Guidance and Worksheet ”) in that version is not included here as it was revised and res ubmitted in June 2014. See Appendix C of this Biological Opinion for the latest version of the guidance and worksheet submitted to this office.Proposed 2013 MSGP

United States Environmenta l Protection Agency (EPA) National Pollutant Discharge Elimination System (NPDES) MULTI-SECTOR GENERAL PERMIT FOR STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY (MSGP)

In compliance with the provisions of the Cl ean Water Act (CWA), as amended (33 U.S.C. 1251 et seq. ), operators of stormwater discharges associated with industrial activity located in an area identified in Appendix C where EPA is the permitting authority are authorized to discharge to waters of the United States in accordance with the eligibility and Notice of Intent (NOI) requirements, effluent limitations, inspection requirements, and other conditions set forth in this permit. This permit is structured as follows:

x General requirements that apply to all facilities are found in Parts 1 through 7;

x Industry sector-specific requirements are found in Part 8; and

x Specific requirements that apply in individual states and Indian country are found in Part 9.

The Appendices (A through P) contain additional permit conditions that apply to all operators covered under this permit.

This permit becomes effective on [insert date of final permit signature]

. This permit and the authorization to discharge expire at midnight, [insert date 5 years from date of final permit signature]

.

Name Title, EPA Region 1

Signed and issued this X th day of X, 2013

Name Title, EPA Region 2 Caribbean Office

Signed and issued this X th day of X, 2013

Name Title, EPA Region 3

Signed and issued this X th day of X, 2013

Name Title, EPA Region 5

Signed and issued this X th day of X, 2013

Name Title, EPA Region 6

Signed and issued this X th day of X, 2013 Name Title, EPA Region 7

Signed and issued this X th day of X, 2013

Name Title, EPA Region 8

Signed and issued this X th day of X, 2013

Name Title, EPA Region 9

Signed and issued this X th day of X, 2013

Name Title, EPA Region 10

Signed and issued this X th day of X, 2013Proposed 2013 MSGP

NPDES MULTI-SECTOR GENERAL PERMIT FOR STORMWATER

DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY TABLE OF CONTENTS 1. Coverage Under this Permit. ......................................................................................................... 1 1.1 Eligibilit y. .................................................................................................................. ....................... 1 1.1.1 Facilities Covered. ........................................................................................................................ 1 1.1.2 Allowable Stormwater Discharges. ........................................................................................... 1 1.1.3 Allowable Non-Stormwater Discharges

. .................................................................................. 2 1.1.4 Limitations on Coverage. ...................................................................................................... ...... 3 1.1.4.1 For Discharges Mixed with Non-Stormwater. ................................................................ 3 1.1.4.2 For Stormwater Discharges Associated with Construction Activity. ........................... 3 1.1.4.3 For Discharges Currently or Previously Covered by Another Permit. ......................... 3 1.1.4.4 For Stormwater Discharges Subject to Effluent Limitation s Guidelines. ...................... 4 1.1.4.5 Endangered and Threatened Species an d Critical Habitat Protection. .................... 4 1.1.4.6 Historic Properties Preservation. ...................................................................................... 5 1.1.4.7 Eligibility for New Dischargers: Base d on Water Qualit y Standard s. .......................... 6 1.1.4.8 Eligibility for New Dischargers to Wa ter-Quality Impair ed Waters. ............................. 6 1.1.4.9 Eligibility for New Dischargers to Wate rs with High Wate r Quality. ............................. 7 1.1.4.10 For Discharges to a Federal CERCLA Site. ...................................................................... 7 1.2 Authorization Unde r this Permit. .............................................................................................. ..... 8 1.2.1 How to Obtain Authorization. .................................................................................................. ... 8 1.2.1.1 Submitting Your Notice of Intent (NOI). .......................................................................... 8 1.2.1.2 How to Submit Your NOI. .................................................................................................. 8 1.2.1.3 Deadlines for Submitting Your NOI and Your Official Date of Permit Coverage. ...... 8 1.2.2 Continuation of Coverage for Existing Permittees After the Permit Expires. ..................... 9 1.2.3 Coverage Under Alternative Permits. ..................................................................................... 10 1.2.3.1 Denial of Coverage for New or Previously Unpermitted Facilities. ........................... 10 1.2.3.2 Loss of Authorization Under the 2013 MSGP for Existing Permit ted Facilit ies. .......... 10 1.2.3.3 Operator Requesting Coverage Under an Alternative Permit. ................................. 10 1.3 Terminating Coverage. ......................................................................................................... ...... 11 1.3.1 Submitting a Notice of Termination (NOT). ............................................................................ 11 1.3.2 How to Submit Your NOT. ....................................................................................................... ... 11 1.3.3 When to Submit Your NOT. ...................................................................................................... .. 11 1.4 Conditional Exclusion for No Exposure. .................................................................................... 11 1.5 Permit Compliance. ..................................................................................................................... 11 2. Control Measures and Effluent Limits. ........................................................................................ 12 2.1 Control Measures. ............................................................................................................. ........... 12 2.1.1 Control Measure Selection and Design Considerations. .................................................... 12 2.1.2 Non-Numeric Technology-Based Effluent Limits (BPT/BAT/BCT)......................................... 13 2.1.2.1 Minimize Exposure. ......................................................................................................... 13 2.1.2.2 Good Housekeeping. ..................................................................................................... 13 2.1.2.3 Maintenance. .................................................................................................................. 14 2.1.2.4 Spill Prevention and Response . ..................................................................................... 14 2.1.2.5 Erosion and Sediment Controls. .................................................................................... 15 2.1.2.6 Management of Runoff. ................................................................................................. 15 2.1.2.7 Salt Storage Piles or P iles Containing Salt. ................................................................... 15 2.1.2.8 Employee Training. ......................................................................................................... 15 2.1.2.9 Non-Stormwater Discharges. ......................................................................................... 16 2.1.2.10 Dust Generation and Vehicle Tracking of Industrial Materials. ................................. 16 2.1.3 Numeric Effluent Limitations Based on Effluent Limitations Guidelines. ............................ 16 2.2 Water Quality-Based Efflue nt Limitations. ................................................................................. 17

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2.2.1 Water Quality Standards. ...................................................................................................... .... 17 2.2.2 Discharges to Water Quality-Impaired Waters. .................................................................... 17 2.2.2.1 Existing Discharge to an Impaired Water with an EPA-Approved or Establishe d TMDL. ............................................................................................................ 17 2.2.2.2 Existing Discharge to an Impaired Water without an EPA-Approved or Establishe d TMDL. ............................................................................................................ 18 2.2.2.3 New Discharge to an Impaired Water. ........................................................................ 18 2.2.3 Tier 2 Antidegradation Requirements for New or Increased Dischargers. ...................... 18 2.3 Requirements Relating to Endangered Species and Historic Properties. .............................. 18 3. Inspections.................................................................................................................... ................ 18 3.1 Routine Facility Inspections. ................................................................................................. ...... 18 3.1.1 Exceptions to Routine Facility Inspections for Inactive and Unstaffed Sites. ................... 19 3.1.2 Routine Facility Inspection Documentation. ......................................................................... 20 3.2 Quarterly Visual Assessment of Stormwater Discharges. ........................................................ 20 3.2.1 Quarterly Visual Assessment Procedures. ............................................................................... 20 3.2.2 Quarterly Visual Assessment Documentation. ...................................................................... 21 3.2.3 Exceptions to Quarterly Visual Assessments. ......................................................................... 21 4. Corrective Actions. ........................................................................................................... ........... 22 4.1 Conditions Requiring SWPPP Review and Revision to Eliminate Problems. ........................... 22 4.2 Corrective Actions and Deadlines. ........................................................................................... 2 3 4.2.1 Immediate Actions. ............................................................................................................ ........ 23 4.2.2 Subsequent Actions. ........................................................................................................... ....... 23 4.3 Corrective Action Documentation. ........................................................................................... 24 4.4 Effect of Corrective Action.................................................................................................... ...... 24 4.5 Substantially Iden tical Outf alls. ............................................................................................. ..... 24 5. Stormwater Pollution Preven tion Plan (SWPPP). ........................................................................ 24 5.1 Person(s) Responsible for SWPPP Preparation. ......................................................................... 25 5.2 Contents of Your SWPPP. ....................................................................................................... ...... 25 5.2.1 Stormwater Pollution Prevention Team................................................................................... 25 5.2.2 Site Description. ............................................................................................................. .............. 25 5.2.3 Summary of Potential Pollutant Sources. .............................................................................. 27 5.2.3.1 Activities in the Area. ..................................................................................................... 2 7 5.2.3.2 Pollutant s. ................................................................................................................... ...... 27 5.2.3.3 Spills and Leaks. ............................................................................................................. . 27 5.2.3.4 Non-Stormwater Discharges. ......................................................................................... 27 5.2.3.5 Salt Storage................................................................................................................... ... 28 5.2.3.6 Sampling Data................................................................................................................. 28 5.2.4 Description of Control Measures to M eet Technology-Based and Water QualityBased Effluent Limits. ........................................................................................................ .......... 28 5.2.5 Schedules and Procedures. ..................................................................................................... . 28 5.2.5.1 Pertaining to Control Measures Used to Co mply with the Effluent Limits in Part 2. ............................................................................................................................ ........... 28 5.2.5.2 Pertaining to Inspections. ............................................................................................... 29 5.2.5.3 Pertaining to Monitoring. ................................................................................................ 29 5.2.6 Documentation to Support Eligibility Considerations Under Other Federal Laws. ......... 30 5.2.6.1 Documentation Regarding Endangered Species. ...................................................... 30 5.2.6.2 Documentation Regarding Historic Properties. ........................................................... 30 5.2.7 Signature Requirements. ....................................................................................................... .... 30 5.3 Required SWPPP Modifications. ................................................................................................. . 30 5.4 SWPPP Avail ability.

........................................................................................................... ............ 31 5.4.1 SWPPP Posting on the Internet. ......................................................................................... ....... 31 5.5 Additional Documentat ion Requirem ents. ............................................................................... 31

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6. Monitoring. ................................................................................................................... ................. 32 6.1 Monitoring Procedures. ........................................................................................................ ....... 32 6.1.1 Monitored Outfalls. ........................................................................................................... .......... 32 6.1.2 Commingled Discharges. .......................................................................................................... 33 6.1.3 Measurable Storm Events. ...................................................................................................... ... 33 6.1.4 Sample Type. .................................................................................................................. ............. 33 6.1.5 Adverse Weather Conditions. .................................................................................................. 33 6.1.6 Climates with Irregular Stormwater Runoff. ........................................................................... 33 6.1.7 Monitoring Periods. ........................................................................................................... .......... 33 6.1.8 Monitoring for Allowable Non-Stormwater Discharges. ...................................................... 34 6.2 Required Monitoring. .......................................................................................................... ......... 34 6.2.1 Benchmark Monitoring. ......................................................................................................... .... 34 6.2.1.1 Applicability of Benchm ark Monitori ng. ...................................................................... 35 6.2.1.2 Benchmark Monitoring Schedule. ................................................................................ 35 6.2.1.3 Exception for Inactive and Unstaffed Sites. ................................................................. 36 6.2.2 Effluent Limitations Monitoring. ................................................................................................. 37 6.2.2.1 Monitoring Based on Effluent Limitations Guid elines. ................................................. 37 6.2.2.2 Substantially Identi cal Outfalls. ..................................................................................... 37 6.2.2.3 Follow-up Actions if Discharge Exce eds Numeric Effluent Limit. .............................. 37 6.2.3 State or Tribal Monitoring Provisions. ....................................................................................... 38 6.2.3.1 Sectors Required to Conduct St ate or Tribal Monitoring. ........................................... 38 6.2.3.2 State or Tribal Monitoring Schedule. .............................................................................. 38 6.2.4 Discharges to Impaired Waters Monitoring. .......................................................................... 38 6.2.4.1 Permittees Required to Monitor Disc harges to Impaired Waters. ............................. 38 6.2.4.2 Impaired Waters Monitoring and Schedule................................................................. 39 6.2.5 Additional Monitoring Required by EPA. ................................................................................ 39 7. Reporting and Recordkeeping. ................................................................................................. 40 7.1 Electronic Reporting Requirement. ............................................................................................ 40 7.2 Submitting Inform ation to EPA. ................................................................................................ ... 40 7.3 Additional SWPPP Information Required in Your NOI. .............................................................. 41 7.4 Reporting Monitoring Data to EPA. ............................................................................................ 41 7.5 Annual Re port.................................................................................................................. ............. 41 7.6 Exceedance Report for Numeric Effluent Limits. ...................................................................... 42 7.7 Additional Reporting........................................................................................................... ......... 42 7.8 Recordkeeping. ................................................................................................................ ........... 43 7.9 Addresses for Reports. ........................................................................................................ ......... 43 7.9.1 EPA Addres ses. ................................................................................................................ ............ 43 7.9.2 State and Tribal Addresses. ................................................................................................... .... 45

8. Sector Specif ic Requir ements .............................................................................................. ...... 46 8A. Sector A: Timber Products ................................................................................................. ............... 46 8B. Sector B: Paper and Allied Products .............................................................................................. 49 8C. Sector C: Chemicals and Allied Products Manufacturing ........................................................ 50 8D. Sector D: Asphalt Paving and Roofing Materials and Lubricant Manufacturing ................. 53 8E. Sector E: Glass, Clay, Cement, Concrete, and Gypsum Products .......................................... 55 8F. Sector F: Primary Metals .................................................................................................. ................. 57 8G. Sector G: Metal Mining (Ore Mining and Dressing) .................................................................... 59 8H. Sector H: Coal Mines and Coal Mining-Related Facilities ......................................................... 73 8I. Sector I: Oil and Gas Extraction and Refining ............................................................................. . 82 8J. Sector J: Mineral Mining and Dressing ..................................................................................... ...... 84 8K. Sector K: Hazardous Waste Treatment, Storage, or Disposal Facilities .................................... 94 8L. Sector L: Landfills, Land Application Sites, and Open Dumps .................................................. 98

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8M. Sector M: Automobile Salvage Yards .......................................................................................... 102 8N. Sector N: Scrap Recycling Facilities ............................................................................................. 104 8O. Sector O: Steam Electric Generating Facilities .......................................................................... 1 10 8P. Sector P: Land Transportation and Warehousing ...................................................................... 113 8Q. Sector Q: Water Transportation ............................................................................................ ........ 116 8R. Sector R: Ship and Boat Building and Repairing Yards ............................................................ 119 8S. Sector S: Air Transportation Facilities ................................................................................... ......... 122 8T. Sector T: Treatment Works ................................................................................................. ............. 128 8U. Sector U: Food and Kindred Products ....................................................................................... .. 130 8V. Sector V: Textile Mills, Apparel, and Other Fabric Product Manufacturing; Leather and Leather Products

............................................................................................................................... ............. 132 8W. Sector W: Furniture and Fixtures .......................................................................................... .......... 134 8X. Sector X: Printing and Publishing ......................................................................................... ......... 135 8Y. Sector Y: Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries .................................................................................................................... .......... 137 8Z. Sector Z: Leather Tanning and Finishing ................................................................................... ... 139 8AA. Sector AA: Fabricated Metal Products ..................................................................................... .. 141 8AB. Sector AB: Transportation Equipment, Industrial or Commercial Machinery....................... 144 8AC. Sector AC: Electronic, Electrical, Photographic, and Optical Goods .................................. 145 8AD. Sector AD: Non-Classified Facilities .............................................................................................. 146

9. State/Tribal Spec ific Requir ements ......................................................................................... . 147

Appendices Appendix A Definitions and Acronyms ................................................................................................. A-1 Appendix B Standard Permit Conditions ........................................................................................ ......B-1 Appendix C Ar eas Covered ..................................................................................................... .............. C-1 Appendix D Activities Covered ................................................................................................ ............. D-1 Appendix E Procedures relating to Endangered Species ................................................................ E-1 Appendix F National Historic Preservation Act Procedures .............................................................. F-1 Appendix G Notice of Intent .................................................................................................. ............... G-1 Appendix H Notice of Termination ............................................................................................. ........... H-1 Appendix I Annual Reporting Form ............................................................................................. .......... I-1 Appendix J Calculating Hardness in Receiving Waters for Hardness Dependent Metals ......... J-1 Appendix K No Exp osure Certification ................................................................................................. K-1 Appendix L List of Tier 3, Tier 2, and Tier 2.5 Waters ....................................................................... ..... L-1 Appendix M Discharge Monitoring Report (DMR) Form ................................................................... M-1 Appendix N List of SIC and NAICS Codes ....................................................................................... ..... N-1 Appendix O Summary of Permit Reports and Submittals ................................................................. O-1 Appendix P List of Federal CERCLA Sites ...................................................................................... ....... P-1

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1. Coverage Under this Permit.

1.1 Eligibility.

1.1.1 Facilities Covered.

To be eligible to discharge under this permit, you must (1) have a stormwater discharge associated with industrial activity from your primary industrial activity, as defined in Appendix A, provided your primary industrial activity is included in Appendix D, or (2) be notified by EPA that you are eligible for coverage under Sector AD of this permit.

1.1.2 Allowable Stormwater Discharges.

Unless otherwise made ineligible under Part 1.1.4, the following discharges are eligible for coverage under this permit:

1.1.2.1 Stormwater discharges associated with industrial activity for any primary industrial activities and co-located industrial activities , as defined in Appendix A, except for any stormwater discharges specifical ly prohibited in Part 8;

1.1.2.2 Discharges designated by EPA as needing a stormwater permit as provided in Sector AD;

1.1.2.3 Discharges that are not otherwise required to obtain NPDES permit authorization but are commingled with discharges that are authorized under this permit; and

1.1.2.4 Discharges subject to any of the nati onal stormwater-specific effluent limitations guidelines listed in Table 1-1

. Table 1-1. Stormwater-Specific Effluent Limitations Guidelines

Regulated Discharge 40 CFR Section MSGP Sector New Source Performance Standard ( NSPS ) New Source Date Discharges resulting from spray down or intentional wetting of lo g s at wet deck stora g e areas Part 429, Subpart I A Yes 1/26/81

Runoff from phosphate fertilizer manufacturing facilities that comes into contact with any rawmaterials, finished product, byproducts or waste products (SIC 2874 ) Part 418, Subpart A C Yes 4/8/74

Runoff from asphalt emulsion facilities Part 443, Subpart A D Yes 7/28/75

Runoff from material storage piles at cement manufacturing facilities Part 411, Subpart C E Yes 2/20/74

Mine dewatering discharges at crushed stone, construction sand and gravel, or industrial sand minin g facilities Part 436, Subparts B, C, and D J No N/A

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Regulated Discharge 40 CFR Section MSGP Sector New Source Performance Standard ( NSPS ) New Source Date Runoff from hazardous waste and non-hazardous waste landfills Part 445, Subparts A and B K, L Yes 2/2/00

Runoff from coal storage piles at steam electric generating facilities Part 423 O Yes 11/19/82 (10/8/74) 1

Existing and new primary airports with 1,000 or more annual jet departures that discharge wastewater associated with airfield pavement deicing that contains urea commingled with stormwater Part 449 S Yes 6/15/12

1.1.3 Allowable Non-Stormwater Discharges

. The following are the only non-stormwater discharges authorized under this permit, provided that all discharges comply with the effluent limitations set forth in Part 2:

x Discharges from fire-fighting activities;

x Fire hydrant flushings;

x Potable water, including water line flushings;

x Uncontaminated condensate from air conditioners, coolers, and other compressors and from the outside storage of refrigerated gases or liquids;

x Irrigation drainage;

x Landscape watering provided all pesticides, herbicides, and fertilizers have been applied in accordance with the approved labeling;

x Pavement wash waters where no detergents or hazardous cleaning products are used (e.g., bleach, hydrofluoric acid, muriatic acid, sodium hydroxide, nonylphenols), and the wash waters do not come into contact with oil and grease deposits or any other toxic or hazardous materials (unl ess cleaned up using dry clean-up methods). You are prohibited from directing any authorized pavement wash waters directly into any surface water or storm drain inlet unless you have implemented appropriate control measures that meet the non-numeric effluent limits in Part 2.1.2. Where appropriate co ntrol measures are not in place, wash water runoff must first un dergo treatment prior to discharge such as filtration, detention, or settlement;

x Routine external building washdown / power washwater that does not use detergents or hazardous cleaning products, (such as those containing bleach, hydrofluoric acid, muriatic acid, sodium hydroxide, nonylphenols);

x Uncontaminated ground water or spring water;

x Foundation or footing drains where flows are not contaminated with process materials;

x Incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of your facility, but not intentional discharges from the cooling tower (e.g., “piped” cooling tower blowdown or drains); and

1 NSPS promulgated in 1974 were not removed via the 1982 regulation; therefore wastewaters generated by Part 423-applicable sources that were New Sources under the 1974 regulations are subject to the 1974 NSPS.

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x Discharges from the spray do wn of lumber and wood product storage yards where no chemical additives are used in the spray-do wn waters and no chemicals are applied tothe wood during storage (applicable only to Sector A facilities provided the nonstormwater component of the discharge is in compliance with the non-numeric effluent limits requirements in Part 2.1.2).

Also allowed are discharges of stormwater listed above in Parts 1.1.2 or authorized nonstormwater discharges in Part 1.1.3, commingl ed with a discharge authorized by a different NPDES permit and/or a discharge that does not require NPDES permit authorization. All other non-stormwater discharges requiring NPDES permit coverage except those specifically listed in Part 1.1.3 are not authorized by this permit. If non-stormwater discharges requiring NPDES permitcoverage other than those specifically authorized in Part 1.1.3, including sector-specific nonstormwater discharges that are listed in Part 8 (a non-exclusive list provided to raise awareness of contaminants or sources of contaminants characteristic of certain sectors), will be discharged, such non-stormwater discharges are not covered by this permit or the permit shield provision of the CWA Section 402(k) and must be covered under another NPDES permit.

1.1.4 Limitations on Coverage.

Any discharges not expressly authorized under this permit are not within the scope of the pollutants authorized. Such discharges are not covered by this permit or the permit shield provision of the CWA Section 402(k) and they cannot become authorized or shielded by disclosure to EPA and/or state via the Notice of Intent (NOI) to be covered by the permit or by any other means (e.g., in the Stormwater Pollution Prevention Plan (SWPPP) or during an inspection).

1.1.4.1 For Discharges Mixed with Non-Stormwater. Stormwater discharges that are mixed with non-stormwater, other than those non-stormwater discharges listed in Part 1.1.3, are not eligible for coverage under this permit.

1.1.4.2 For Stormwater Discharges Asso ciated with Construction Activity. Stormwater discharges associated with construction activity disturbing one acre or more, or that are part of a larger common plan of development or sale if the larger common plan will ultimately disturb one acre or more, are not eligible for coverage under this permit, unless in conjunction with mining activities or certain oil and gas extraction activities as specified in Sectors G, H, I, and J of this permit.

1.1.4.3 For Discharges Currently or Previously Covered by Another Permit. Unless you have received written notification from EPA specifically allowing these discharges to be covered under this permit, you are not eligible for coverage under this permit for any of the following:

x Stormwater discharges associated with industrial activity that are currently covered under an individual NPDES perm it or an alternative NPDES general permit;

x Discharges covered within five years prior to the effective date of this permit by an individual permit or alternative general permit where that permit established site-specific numeric water quality-based limitations developed for the stormwater component of the discharge; or

x Discharges from facilities where any NPDES permit has been or is in the process of being denied, terminated, or revoked by EPA (this does not apply to the routine reissuance of permits every five years).

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1.1.4.4 For Stormwater Discharges Subjec t to Effluent Limitations Guidelines. For discharges subject to stormwater effluent limitation guidelines under 40 CFR, Subchapter N, only those stormwater discharges id entified in Table 1-1 are eligible for coverage under this permit.

1.1.4.5 Endangered and Threatened Spec ies and Critical Habitat Protection. Coverage under this permit is available only if your stormwater discharges, allowable non-stormwater discharges, and stormwater discharge-rela ted activities were the subject of an Endangered Species Act (ESA) consultation or an ESA Section 10 permit, or if your stormwater discharges, allowable non-stormwater discharges, and stormwater discharge-related activities are not likely to adversely affect any species that are federally-listed as endangered or threatened (“listed”) under the ESA and are not likely to adversely affect habitat that is federally-designated as “critical habitat” under the ESA. You must meet one of the criteria be low, following the procedures in Appendix E:

Criterion A. No federally-listed threatened or endanger ed species or their designated critical habitat(s) are likely to occur in the “action area” as defined in Appendix A. To certify your eligibility under this criterion, you must use the E.4 Criterion Selection worksheet. You must also provide a description of the basis for the criterion you selected on your NOI form and provide documentation supporting your eligibility determination in your SWPPP.

Criterion B. The industrial activity’s discharges and discharge-related activities were already addressed in another operator’s valid certification of eligibility for your action area under this permit and there is no reason to believe that federally-listed species or federally-designated critical habitat not considered in the prior certification may be present or located in the “action area” (e.g., due to a new species listing or critical habitat designation). To certify your eligibility under this criterion, there must be no lapse of NPDES permit coverage in the other operator’s certification. You must also comply with any terms and conditions imposed under the other operator's valid certification of eligibility to ensure that your discharges and discharge-related activities are protective of listed species and/or critical habitat. To certify your eligibility under this criterion, you must use the E.4 Criterion Selection worksheet. You must include in your NOI the NPDES ID from the other operator’s notification of authorization under this permit, and a description of the basis for the criterion selected on your NOI form, including the eligibility criterion selected by the other operator’s certification. You must also provide any documentation in your SWPPP that supports the other operator’s eligibility determination, as well as any terms and conditions imposed under the eligibility requirements that applied under the prior certification.

Criterion C. Federally-listed threatened or endangered species or their designated critical habitat(s) are likely to occur in or near your facility’s “action area,” and your industrial activity’s discharges and discharge-related activities are not likely to adversely affect listed threatened or endang ered species or critical habitat. To certify your eligibility under this criterion, you must use the E.4 Criterion Selection worksheet. At least 30 days prior to filing your NOI for permit coverage, you must submit to EPA and the Services your completed Criterion C worksheet. After evaluation of your worksheet, EPA may requ ire additional controls that you must implement to avoid or eliminate adverse effects on listed species and critical habitat from discharges and discharge-related activities. You may submit your NOI for permit coverage 30 days after submitting your completed Criterion C

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worksheet. You must provide a descriptio n of the basis for the criterion you selected on your NOI form and provide documentation supporting your eligibility determination in your SWPPP.

Criterion D. Consultation between a Federal Agency and the U.S. Fish and Wildlife Service and/or the National Marine Fisheries Serv ice under section 7 of the ESA has been concluded. Consultations can be either formal or informal, and would have occurred only as a result of a separate fe deral action (e.g., during application for an individual wastewater discharge permit or the issuance of a wetlands dredge and fill permit), and consultation must have addressed the effects of the industrial activity’s discharges and discharge-related activities on all federally-listed threatened or endangered species and a ll federally-designated critical habitat. The result of this consultation must be either:

i. A biological opinion that concludes that the action in question (taking into account the effects of your facility’s discharges and discharge-related activities) is not likely to jeopardize the continued existence of listed species, nor the destruction or adverse modification of critical habitat; or

ii. Written concurrence from the applicable Service(s) with a finding that the facility’s discharges and discharge-related activities are not likely to adversely affect federally-listed species or federally-designated critical habitat. To certify your eligibility under this criterion, you must use the E.4 Criterion Selection worksheet. You must verify that the consultation remains valid, in accordance with 50 CFR §402.16. If reinitiation of consultation is required, in order to be eligible under this Criterion you must conclude the reinitiated consultation and the result of the consultation must be consistent with (i) or (ii) above

. If eligible, you must also provide supporting documentation for your determination in your NOI and SWPPP, including the Biological Opinion (or PCTS tracking number) or concurrence letter.

Criterion E. Your industrial activities are authorized through the issuance of a permit under section 10 of the ESA, and this authorization addresses the effects of the facility’s discharges and discharge-related activities on federally-listed species and federally-designated critical habitat. To cert ify your eligibility under this criterion, you must use the E.4 Criterion Selection worksheet. You must also provide supporting documentation for your determination in your NOI and SWPPP, including a copy of the permit from the Services.

You must comply with any applicable terms, conditions, or other requirements developed in the process of meeting the eligibility criteria in this section to remain eligible for coverage under this permit. Documentation of these requirements must be kept as part of your SWPPP (see Part 5.2.6.1).

1.1.4.6 Historic Proper ties Preservation. Coverage under this permit is available only if you meet one of the eligibility criteria below, following the procedures in Appendix F:

Criterion A. There is no potential of an adverse effect on historic properties because there will be no new subsurface control measures (which include stormwater conveyances) constructed or installed; or

Criterion B. There are no historic properties or properties eligible for listing in the National Register of Historic Places within the area of potential effects (APE); or

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Criterion C. Your subsurface stormwater controls have the potential to cause adverse effects on historic properties. After contacting in writing the EPA Regional office and the appropriate SHPO, THPO or an authoriz ed tribal representative, you have coordinated with the SHPO, THPO or an authorized tribal representative (or EPA in coordination with the SHPO, THPO or an authorized tribal representative), and received a written conclusion that the subsurface stormwater controls will not cause adverse effects on historic properties; or I have entered into a written agreement with the SHPO, THPO or an auth orized tribal representative (or EPA in coordination with the SHPO, THPO or an authorized tribal representative) regarding measures required to mitigate or prevent adverse effects on historic properties; or

Criterion D. Your subsurface stormwater controls have the potential to cause adverse effects on historic properties. You have contacted both the EPA Regional office and the SHPO, THPO or an authorized tribal representative in writing, and EPA provided the additional measures, if any, required for me to be eligible for permit coverage.

If you have been unable to reach agreement with a SHPO, THPO, or other tribal representative regarding appropriate measures to mitigate or prevent adverse effects, EPA may notify you of additional measures you must implement to be eligible for coverage under this permit.

1.1.4.7 Eligibility for New Dischargers: Based on Water Quality Standards. If you are a new discharger (as defined in Appendix A), you are not eligible for coverage under this permit for discharges that EPA, prior to authorization under this permit, determines will not meet any applicable water quality standard. Where such a determination is made prior to authorization, EPA may notify you that an individual permit application is necessary in accordance with Part 1.2.3. However, EP A may authorize your coverage under this permit after you have included appropriat e controls and implem entation procedures designed to ensure your di scharge meets water quality standards. In the absence of information demonstrating otherwise, EPA expects that compliance with the stormwater control requirements of this permit, including the requirements applicable to such discharges in Part 2, will meet applicable water quality standards.

1.1.4.8 Eligibility for New Dischargers to Water-Quality Impaired Waters. If you are a new discharger (as defined in Appendix A), you are not eligible for coverage under this permit to discharge to an “impaired water” (as defined in Appendix A) unless you do one of the following:

a. Prevent all exposure to stormwater of the pollutant(s) for which the waterbody is impaired, and retain documentation of procedures taken to prevent exposure onsite with your SWPPP.

b. Prior to submitting your NOI, provide to the appropriate EPA Regional Office technical information or other documentation to support your claim that the pollutant(s) for which the waterbody is impaired is not present at your site, and retain such documentation with your SWPPP.

c. Prior to submitting your NOI, provide to the appropriate EPA Regional Office information, either data or other technical documentation, to support a

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conclusion that the discharge is expected to meet applicable water quality standards, and retain such information with your SWPPP. The information to be submitted must be sufficient to demonstrate:

i. For discharges to waters without an EPA-approved or established TMDL, thatthe discharge of the pollutant for which the water is impaired will meet instream water quality criteria at the point of discharge to the waterbody; or

ii. For discharges to waters with an applicable EPA-approved or established TMDL, which specifically provides for a wasteload allocation to stormwater or determined that stormwater was not a source of the impairment, that there are sufficient remaining wasteload allocations in the TMDL to allow your discharge and that existing dischargers to the waterbody are subject to compliance schedules designed to bring the waterbody into attainment with water quality standards.

You are eligible under Part 1.1.4.8.c if you receive an affirmative determination from the Regional Office that your discharge will meet applicable water quality standards, in which case you must maintain such determination onsite with your SWPPP, or if the Regional Office fails to respond within 30 days of submission of data to the Regional Office.

Note: Your project will be considered to discharge to an impaired water if the first water of the U.S. to which you discharge is identified by a state, tribe, or EPA pursuant to Section 303(d) of the CWA as not meeting an applicable water quality standard, or is included in an EPA-approved or established total maximum daily load (TMDL). For discharges that enter a storm sewer system prior to discharge, the first water of the U.S. to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system.

1.1.4.9 Eligibility for New Dischargers to Wa ters with High Water Quality.

For new dischargers to Tier 2 or Tier 2.5 waters: If you are a new discharger (as defined in Appendix A), you are eligible to discharge to a Tier 2 or Tier 2.5 water only if your discharge will not lower the water quality of the applicable water. See a list of Tier 2 and Tier 2.5 waters in Appendix L.

For new dischargers to Tier 3 waters: If you are a new discharger (as defined in Appendix A), you are not eligible for coverage under this permit for discharges to waters designated by a state or tribe as Tier 3 (outstanding natural resource waters) for antidegradation purposes under 40 CFR 131.13(a)(3). See a list of Tier 3 waters in Appendix L.

Note: Your project will be considered to discharge to a Tier 2, Tier 2.5, or Tier 3 water if the first water of the US to which you discharge is identified by a state, tribe, or EPA as a Tier 2, Tier 2.5, or Tier 3 water. For discharges that enter a storm sewer system prior to discharge, the first water of the US to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system.

1.1.4.10 For Discharges to a Federal CERCLA Site. If you discharge to a federal CERCLA Site as defined in Appendix A and referenced in A ppendix P, you are ineligible for coverage under this permit, unless you notify your applicable EPA Regional Office in advance and

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the EPA Regional Office determines that you ar e eligible for permit coverage pursuant to Part 1.1.4.10. In determining eligibility for coverage under this Part, the EPA Regional Office may evaluate whether you have included appropriate controls and implementation procedures designed to ensure your discharge will not lead to recontamination of aquatic media at the CERCLA Site. If it is determined that your facility discharges to a CERCLA Site referenced in Appendix P after you have obtained coverage under this permit, you must contact your applicable EPA Regional Office and develop appropriate controls and/or implemen tation procedures to ensure that your discharges will not lead to recontamination of aquatic media at the CERCLA Site.

For the purposes of this permit, a permittee discharges to a federal CERCLA Site if the discharge flows directly into the site through its own conveyance, or a through a conveyance owned by others, such as a municipal separate storm sewer system.

1.2 Authorization Under this Permit.

1.2.1 How to Obtain Authorization.

To obtain authorization under this permit, you must:

x Be located in a state, territory, or Indian country, or be a federal operator identified in Appendix C where EPA is the permitting authority;

x Meet the Part 1.1 eligibility requirements;

x Select, design, install, and implement control measures in accordance with Part 2.1 to meet numeric and non-numeric effluent limits;

x Develop a SWPPP according to the requirements in Part 5 of this permit or update your existing SWPPP consistent with Part 5 prior to submitting your NOI for coverage under this permit; and

x Submit a complete and accurate NOI in accordances with this Part.

1.2.1.1 Submitting Your Notice of Intent (NOI). To be covered under this permit, you must submit to EPA a complete and accurate NOI by the deadline applicable to your facility presented in Table 1-2. The NOI certifies to EPA that you are eligible for coverage according to Part 1.1, and provides informatio n on your industrial activities and related discharges.

You must complete the development of a SWPPP or update your existing SWPPP consistent with Part 5 prior to submitting your NOI for coverage under this permit. If you choose to post your SWPPP on the Internet according to Part 5.4.1, you must include the URL on your eNOI form and this URL must direct ly link to the SWPPP (not just the corporate or facility homepage). If you do not post your SWPPP online, you must enter additional facility information from your SWPPP, in accordance with Part 5.4.2.

1.2.1.2 How to Submit Your NOI. You must submit your NOI, electronically, unless you have received a waiver from electronic reporting as described in Part 7.1.

1.2.1.3 Deadlines for Submitting Your NOI an d Your Official Date of Permit Coverage. Table 1-2 provides the deadlines for submitting your NO I and your official start date of permit coverage.

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Table 1-2. NOI Submittal Deadlines/201 3 MSGP Discharge Authorization Dates Cate g ory NOI Submission Deadline Dischar g e Authorization Date 1, 2 Existing dischargers that were authorized for coverage under the 2008 MSGP No later than [90 days after permit issuance]. 30 days after EPA notifies you that it has received a complete NOI, unless EPA notifies you that your authorization has been denied or delayed. Note: You must review and update your SWPPP to ensure that this permit’s requirements are addressed prior to submitting your NOI.

Your authorization under the 2008 MSGP is automatically continued until you have been granted coverage under this permit or an alternative permit, or

covera g e is otherwise terminated. New dischargers or existing dischargers not authorized for coverage under the 2008 MSGP A minimum of 30 days prior to commencing discharge. 30 days after EPA notifies you that it has received a complete NOI, unless EPA notifies you that your authorization has been denied or delayed. New owner/operator of existing discharger whose discharge is authorized under this permit A minimum of 30 days prior to the date that the transfer to the new owner/operator will take place. 30 days after EPA notifies you that it has received a complete NOI, unless EPA notifies you that your authorization has been denied or delayed.

Other eligible facilities – Facilities that commenced discharging prior to [date of permit issuance], but not covered under the 2008 MSGP or another NPDES permit Immediately, to minimize the time discharges from the facility will continue to be unauthorized. 30 days after EPA notifies you that it has received a complete NOI, unless EPA notifies you that your authorization has been denied or delayed.

1 If you have missed the deadline to submit your NOI, any and all discharges from your industrial activities will continue to be unauthorized under the Clean Water Act until they are covered by this or a different NPDES permit. EPA may take enforcement action for any unpermitted discharges that occur between the commencement of discharging and discharge authorization.

2 Discharges are not authorized if your NOI is incomplete or inaccurate or if you were never eligible for permit coverage.

1.2.2 Continuation of Coverage for Existi ng Permittees After the Permit Expires.

If this permit is not reissued or replaced prior to the expiration date, it will be administratively continued in accordance with the Administrative Procedure Act and 40 CFR 122.6 and remain in force and effe ct for discharges that were cove red prior to expiration. If you were authorized to discharge under this permit prior to the expiration date, any discharges authorized under this permit will automatically remain covered by this permit until the earliest of:

x Your authorization for coverage under a reissued permit or a replacement version of this permit following your timely submittal of a complete and accurate NOI requesting coverage under the new permit; or

Note: If you fail to submit a timely NOI for coverage under the reissued or replacement permit, your coverage will terminate on the date that the NOI was due.

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x Your submittal of a Notice of Termination (NOT); or

x Issuance of an individual permit for the facility’s discharges; or

x A formal permit decision by EPA not to reissue this general permit, at which time EPA will identify a reasonable time period for cove red dischargers to seek coverage under an alternative general permit or an individual pe rmit. Coverage under this permit will cease at the end of this time period.

EPA reserves the right to modify or revoke and reissue this permit under 40 CFR 122.62 and 63, in which case you will be notified of any relevant changes or procedures to which you may be subject.

1.2.3 Coverage Under Alternative Permits.

EPA may require you to apply for and/or obtain authorization to discharge under an alternative permit, i.e., either an individual NPDE S permit or an alternative NPDES general permit, in accordance with 40 CFR 122.64 and 124.5. Any interested person may petition EPA to take action under this paragraph. If EPA requires yo u to apply for an alternative permit, the Agency will notify you in writing that a permit application is required. This notification will include a brief statement of the reasons for this decision and will contain alternative permit application requirements, including deadlines for completing your application.

1.2.3.1 Denial of Coverage for New or Previously Unpermitted Facilities. For new or previously unpermitted facilities, following your submittal of your NOI, you may be denied coverage under the 2013 MSGP and must apply for and/or obtain authorization to discharge under an alternative permit, according to the provisions of Part 1.2.3.

1.2.3.2 Loss of Authorization Under the 2013 MSGP for Existing Permitted Facilities. If your stormwater discharges are covered under this permit, you may receive a written notification that you must either apply for co verage under an individual NPDES permit or an alternative general NPDES permit, according to the provisions of Part 1.2.3. In addition to the reasons for the decision and alternative permit application deadlines, the notice will include a statement that on the effective date of your alternative permit coverage, your coverage under the 2013 MSGP will terminate. EPA may grant additional time to submit the application if you request it. If you fail to submit an alternative permit application as required by EPA, then your authorization to discharge under the 2013 MSGP is terminated at the end of the day EPA required you to submit your alternative permit application. EPA may take appropriate enforcement action for any unpermitted discharge. When you become authorized to discharge under an alternative permit, your coverage under the 2013 MSGP is terminated on the effective date your replacement permit coverage.

1.2.3.3 Operator Requesting Covera ge Under an Alternative Permit. You may request to be excluded from coverage under this general perm it by applying for an individual permit. In such a case, you must submit an individual permit application in accordance with the requirements of 40 CFR 122.28(b)(3)(iii), with reasons supporting the request, to EPA at the applicable EPA Regional Office listed in Part 7.9.1 of this permit. The request may be granted by issuance of an individual permit or authorization of coverage under an alternative general permit if your reasons are adequate to support the request. When you are authorized to discharge under an alternative permit, your authorization to discharge under the 2013 MSGP is terminated on the effective date of the alternative permit.

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1.3 Terminating Coverage.

1.3.1 Submitting a Notice of Termination (NOT).

To terminate permit coverage, you must submit a complete and accurate NOT. Your authorization to discharge under this permit terminates at midnight of the day that you are notified that your complete NOT has been proces sed. If you submit a NOT without meeting one or more of the conditions identified in Part 1.3. 3, then your NOT is not valid. You are responsible for meeting the terms of this permit until your authorization is terminated.

1.3.2 How to Submit Your NOT.

See Part 7.2 for information on how to submit required information to EPA.

1.3.3 When to Submit Your NOT.

You must submit a NOT within 30 days after one or more of the following conditions have been met:

x A new owner or operator has taken over responsibility for the facility; or

x You have ceased operations at the facility, there are not or no longer will be discharges of stormwater associated with industrial acti vity from the facility, and you have already implemented necessary sediment and erosion controls as required by Part 2.1.2.5; or

x You are a Sector G, H, or J facility and you have met the applicable termination requirements; or

x You have obtained coverage under an indivi dual or alternative general permit for all discharges required to be covered by an NP DES permit, unless EPA has required that you obtain such coverage under authority of Part 1.2.3, in which case coverage under this permit will terminate automatically.

1.4 Conditional Exclusion for No Exposure.

If you are covered by this permit, and become eligible for a “no exposure” exclusion from permitting under 40 CFR 122.26(g), you may file a No Exposure Certification. You are no longer required to have a permit upon submission of a complete and accurate no exposure certification to EPA. If you are no longer requ ired to have permit coverage because of a no exposure exclusion and have submitted a No Exposure Certification form to EPA, you are not required to submit a NOT. See Part 7.2 for information on how to submit required information to EPA.

You must submit a No Exposure Certificat ion to EPA once every five years.

1.5 Permit Compliance.

Any noncompliance with any of the requirements of this permit constitutes a violation of this permit, issued under the CWA. As detailed in Part 4 (Corrective Actions) of this permit, failure to take any required corrective actions constitutes an independent, additional violation of this permit, in addition to any original violation that triggered the need for corrective action. As such, any actions and time periods specified for remedying noncompliance do not absolve parties of the initial underlying noncompliance.

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Where corrective action is triggered by an event that does not itself constitute permit noncompliance, such as an exceedance of an applicable benchmark, there is no permit violation provided you take the required corrective action within the relevant deadlines established in Part 4.2.

2. Control Measures and Effluent Limits.

In the technology-based limits included in Parts 2.1 and 8, the term “minimize” means reduce and/or eliminate to the extent achieva ble using control measures (including best management practices) that are technologically available and economically practicable and achievable in light of best industry practice.

2.1 Control Measures.

You must select, design, install, and implement control measures (including best management practices) to address the selection and design considerations in Part 2.1.1, meet the non-numeric effluent limits in Part 2.1.2, meet limits contained in applicable effluent limitations guidelines in Part 2.1.3, and meet the water quality-based effluent limitations in Part 2.2. The selection, design, installation, and implementation of these control measures must be in accordance with good engineering practices and manufacturer’s specifications. Note that you may deviate from such manufacturer’s specifications where you provide justification for such deviation and include documentation of your rationale in the part of your SWPPP that describes your control measures, consistent with Part 5.2.4. If you find that your control measures are not achieving their intended effect of minimizing pollutant discharges, you must modify these control measures in accordance with the corrective action requirements set forth in Part 4. Regulated stormwater discharges from your fac ility include stormwater run-on that commingles with stormwater discharges associated with industrial activity at your facility.

Effluent limit requirements in Part 2.1.2 that do not involve the site-specific selection of a control measure or are specific activity requirements (e.g., “Drain fluids from equipment and vehicles that will be decommissioned”) are marked with an asterisk (*). When documenting in your SWPPP in Part 5 how you will comply with the requirements marked with an asterisk, you have the option of including additional information or you may just “cut-and-paste” the effluent limits verbatim into your SWPPP without providing additional documentation (see Part 5.2.4).

2.1.1 Control Measure Selectio n and Design Considerations.

You must consider the following when selecting and designing control measures:

x Preventing stormwater from coming into contact with polluting materials is generally more effective, and less costly, than trying to remove pollutants from stormwater;

x Using control measures in combination is more effective than using control measures in isolation for minimizing pollutants in your stormwater discharge;

x Assessing the type and quantity of pollutants, including their potential to impact receiving water quality, is critical to designing effective control measures that will achieve the limits in this permit;

x Minimizing impervious areas at your facility and infiltrating runoff onsite (including bioretention cells, green roofs, and pervious pavement, among other approaches) can reduce runoff and improve ground water recharge and stream base flows in local streams, although ca re must be taken to avoid ground water contamination;

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x Attenuating flow using open vegetated swales and natural depressions can reduce in-stream impacts of erosive flows;

x Conserving and/or restoring riparian buffers will help protect streams from stormwater runoff and improve water quality; and

x Using treatment interceptors (e.g., swirl separators and sand filters) may be appropriate in some instances to minimize the discharge of pollutants.

2.1.2 Non-Numeric Technology-Based Effluent Limits (BPT/BAT/BCT).

In addition to complying with the non-numeric technology-based effluent limits in Part 8, you must also:

2.1.2.1 Minimize Exposure. You must minimize the exposure of manufacturing, processing, and material storage areas (including loading and unloading, storage, disposal, cleaning, maintenance, and fueling operations) to rain, snow, snowmelt, and runoff by either locating these industrial materials and activities inside or protecting them with storm resistant coverings. In minimizing exposure, you must:

x Use grading, berming or curbing to prevent runoff of contaminated flows and divert run-on away from these areas, unless infeasible;

x Locate materials, equipment, and activities so that potential leaks and spills are contained or able to be containe d or diverted before discharge;

x Clean up spills and leaks promptly using dry methods (e.g., absorbents) to prevent the discharge of pollutants;

x Unless infeasible, store leaky vehicles and equipment indoors or, if stored outdoors, use drip pans and absorbents;

x Use spill/overflow protection equipment;

x Perform all vehicle and/or equipment clea ning operations indoors, under cover, or in bermed areas that prevent runoff and run-on and also that capture any overspray;

x Drain fluids from equipment and vehicles that will be decommissioned or will remain unused for extended periods of time;* and

x Ensure that all washwater, with the exception of discharges from pavement wash water and routine building washdown described in Part 1.1.3, drains to a sanitary sewer, sump, or other proper collection sy stem (i.e., not the stormwater drainage system).*

The discharge of vehicl e and equipment washwater, includ ing tank cleaning operations, is not authorized by this permit. These wastewaters must be covered under a separate NPDES permit, discharged to a sanitary sewer in accordance with applicable industrial pretreatment requirements, or disposed of otherwise in accordance with applicable law.

Note: Industrial materials do not need to be enclosed or covered if stormwater runoff from affected areas does not discharge to receiving waters or if discharges are authorized under another NPDES permit.

2.1.2.2 Good Housekeeping. You must keep clean all expose d areas that are potential sources of pollutants. You must perform good housekeeping measures, including but not limited to, the following:

x Sweep or vacuum at regular intervals;

x Store materials in appropriate containers;

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x Identify and control all on-site sources of dust to minimize stormwater contamination from the deposition of dust on areas exposed to precipitation;

x Keep all dumpsters under cover or fit with a lid that must remain closed when not in use;* and

x Ensure that waste, garbage, and floatabl e debris are not discharged to receiving waters by keeping exposed areas free of su ch materials or by intercepting them before they are discharged.

Plastic Materials Requirements: Facilities that handle pre-production plastic pellets are required to implement best management practi ces to eliminate discharges of plastic in stormwater. Examples of plastic material required to be addressed as stormwater pollutants include plastic resin pellets, powders, flakes, additives, regrind, scrap, waste and recycling.

2.1.2.3 Maintenance. You must maintain all control measures that are used to achieve the effluent limits required by this permit in effective operating condition, as well as all industrial equipment and system s to help prevent discharges of pollutants from them. This includes:

x Performing inspections and preventive maintenance of stormwater drainage, source controls, treatment systems, and plant equipment and systems that could fail and result in contamination of stormwater.

x Diligently maintaining nonstructural control measures (e.g., keep spill response supplies available, personnel appropriately trained).

x Inspecting and maintaining bag houses quarterly to prevent the escape of dust from the system and immediately removing any accumulated dust at the base of the exterior bag house.*

x Cleaning catch basins when the depth of debris reaches two-thirds (2/3) of the sump depth and keeping the debris surface at least six inches below the outlet pipe.*

If you find that your control measures need to be replaced or repaired, you must immediately take all reasonable steps to prev ent or minimize the di scharge of pollutants until a permanent solution is installed and made operational, including cleaning up any contaminated surfaces so that the material will not discharge during subsequent storm events.

Note: In this context, the term “immediately” requires you to, on the same day you identify that a control measure needs to be replaced or repaired, take all reasonable steps to minimize or prevent the discharge of pollutants until a permanent solution is installed and made operational. However, if a problem is identified at a time in the work day when it is too late to take action, the initiation of action must begin on the following work day.

2.1.2.4 Spill Prevention and Response. You must minimize the potential for leaks, spills and other releases that may be exposed to stormwater and develop plans for effective response to such spills if or when they occur. You must conduct spill prevention and response measures, including but not limited to, the following:

x Plainly label containers (e.g., “Used Oil,” “Spent Solvents,” “Fertilizers and Pesticides”) that could be susceptible to spillage or leakage to encourage proper handling and facilitate rapid response if spills or leaks occur;*

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x Implement procedures for material stor age and handling, including the use of secondary containment and barriers between material storage and traffic areas, or a similarly effective means designed to prevent the discharge of pollutants from these areas;

x Develop training on the procedures for expeditiously stopping, containing, and cleaning up leaks, spills, and other releases. As appropriate, execute such procedures as soon as possible.

x Keep spill kits on-site, located near areas where spills may occur; and

x Notify appropriate facility personnel, emergency response agencies, and regulatory agencies when a leak, spill, or other release occurs.

Where a leak, spill or other release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117, or 40 CFR Part 302, occurs during a 24-hour period, you must notify the National Response Center (NRC) at ( 800) 424-8802 or, in the Washington, DC, metropolitan area, call (202) 267-2675 in accord ance with the requirements of 40 CFR Part 110, 40 CFR Part 117, and 40 CFR Part 302 as soon as you have knowledge of the discharge. State or local requirements may necessitate reporting spills or discharges to local emergency response, public health, or drinking water supply agencies. Contact information must be in locations that are readily accessible and available.

2.1.2.5 Erosion and Sediment Controls. You must minimize erosion by stabilizing exposed soils at your facility and placing flow velocity dissipation devices at discharge locations. You must also use structural and non-structural control measures to prevent the discharge of sediment. If you use polymers and/or other chemical treatments as part of your controls, you must identify the polymers and/or chemicals used and the purpose. There are many resources available to help you select appropriate BMPs for erosion and sediment control, including EPA’s Stormwater Discharges from Construction Activities website at: www.epa.gov/npdes/stormwater/construction

. 2.1.2.6 Management of Runoff. You must divert, infiltrate, reuse, contain, or otherwise reduce stormwater runoff, to minimize pollutants in your discharges. In selecting, designing, installing, and implementing appropriate control measures, you are encouraged to consult with EPA’s internet-based resources relating to runoff management, including the sector-specific Industrial Stormwater Fact Sheet Series

, ( www.epa.gov/npdes/stormwater/msgp ), National Menu of Stormwater BMPs ( www.epa.gov/npdes/stormwater/menuofbmps ), and National Management Measures to Control Nonpoint Source Pollution from Urban Areas ( www.epa.gov/owow/nps/urbanmm/index.html ), and any similar state or tribal

resources.
2.1.2.7 Salt Storage Piles or Piles Containing Salt. You must enclose or cover storage piles of salt, or piles containing salt, used for deicing or other commercial or industrial purposes, including maintenance of paved surfaces. You must implement appropriate measures (e.g., good housekeeping, diversions, containm ent) to minimize exposure resulting from adding to or removing materials from the p ile. Piles do not need to be enclosed or covered if stormwater runoff from the piles is not discharged or if discharges from the piles are authorized under another NPDES permit.

2.1.2.8 Employee Training. You must train all employees who work in areas where industrial materials or activities are exposed to stormwater, or who are responsible for implementing activities necessary to meet the conditions of this perm it (e.g., inspectors,

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maintenance personnel), including all members of your Pollution Prevention Team. You must ensure the following personnel understand the requirements of this permit and their specific responsibilities with respect to those requirements:

x Personnel who are responsible for the design, installation, maintenance, and/or repair of controls (including pollution prevention measures);

x Personnel responsible for the storage and handling of chemicals and materials that could become contaminants in stormwater discharges;

x Personnel who are responsible for conduc ting and documenting monitoring and inspections as required in Parts 3 and 6; and

x Personnel who are responsible for taking and documenting corrective actions as required in Part 4.

Personnel must be trained in at least the following if related to the scope of their job duties (e.g., only personnel responsible for conducting inspections need to understand how to conduct inspections):

x An overview of what is in the SWPPP;

x Spill response procedures, good housekeeping, maintenance requirements, and material management practices;

x The location of all controls on the site required by this permit, and how they are to be maintained;

x The proper procedures to follow with resp ect to the permit’s pollution prevention requirements; and

x When and how to conduct inspections, record applicable findings, and take corrective actions.

2.1.2.9 Non-Stormwater Discharges. If non-stormwater discharges requiring NPDES permit coverage other than those specifically authorized in Part 1.1.3 will be discharged, such non-stormwater discharges are not covered by this permit or the permit shield provision of the CWA Section 402(k) and must be covered under another NPDES permit.

2.1.2.10 Dust Generation and Vehicle Tracking of Industrial Materials. You must minimize generation of dust and off-site tracking of raw, final, or waste materials.

2.1.3 Numeric Effluent Limitations Base d on Effluent Limitations Guidelines.

If you are in an industrial category subject to one of the effluent limitations guidelines identified in Table 6-1 (see Part 6.2.2.1), you must meet the effluent limits referenced in Table 2-1 below:

Table 2-1. Applicable Effluent Limitations Guidelines Re g ulated Activity 40 CFR Part/Subpart Effluent Limit Discharges resulting from spray down or intentional wetting of logs at wet deck stora g e areas Part 429, Subpart I See Part 8.A.7

Runoff from phosphate fertilizer manufacturing facilities that comes into contact with any raw materials, finished product, by-products or waste products (SIC 2874) Part 418, Subpart A See Part 8.C.4

Runoff from asphalt emulsion facilities Part 443, Subpart A See Part 8.D.4

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Re g ulated Activity 40 CFR Part/Subpart Effluent Limit Runoff from material storage piles at cement manufacturin g facilities Part 411, Subpart C See Part 8.E.5

Mine dewatering discharges at crushed stone, construction sand and gravel, or industrial sand minin g facilities Part 436, Subparts B, C, or D See Part 8.J.9

Runoff from hazardous waste landfills Part 445, Subpart A See Part 8.K.6 Runoff from non-hazardous waste landfills Part 445, Subpart B See Part 8.L.10 Runoff from coal storage piles at steam electric g eneratin g facilities Part 423 See Part 8.O.8

Existing and new primary airports with 1,000 or more annual jet departures that discharge wastewater associated with airfield pavement deicing that contains urea commin g led with stormwater Part 449 See Part 8.S.7

2.2 Water Quality-Based Effluent Limitations.

2.2.1 Water Quality Standards.

Your discharge must be controlled as necessary to meet applicable water quality standards.

EPA expects that compliance with the conditions in this permit will control discharges as necessary to meet applicable water quality standards. If at any time you become aware, or EPA determines, that your discharge does not meet applicable water quality standards, you must take corrective action as required in Part 4.1 and document the corrective actions as required in Part 4.3. You must also comply wi th any additional requirements th at your state or tribe requires in Part 9.

EPA may also impose additional water quality-based limitations on a site-specific basis, or require you to obtain coverage under an individual permit, if information in your NOI, required reports, or from other sources indicates that yo ur discharges are not controlled as necessary to meet applicable water quality standards. You must implement all controls necessary to comply with a wasteload allocation in an EPA established or approved TMDL.

2.2.2 Discharges to Water Quality-Impaired Waters.

Note: Your project will be considered to discharge to an impaired water if the first water of the U.S. to which you discharge is identified by a state, tribe, or EPA pursuant to Section 303(d) of the CWA as not meeting an applicable water quality standard, or is included in an EPA-approved or established total maximum daily load (TMDL). For discharges that enter a storm sewer system prior to discharge, the first water of the U.S. to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system.

2.2.2.1 Existing Discharge to an Impaired Wate r with an EPA-Approved or Established TMDL. If you discharge to an impaired water with an EPA approved or established TMDL, EPA will inform you if any additional limits or controls are necessary for your discharge to be consistent with the assumptions of any available wasteload allocation in the TMDL, or if coverage under an individual permit is necessary in accordance with Part 1.5.1.

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2.2.2.2 Existing Discharge to an Impaired Wate r without an EPA-Approved or Established TMDL. If you discharge to an impaired water without an EPA approved or established TMDL, you are still required to comply with Part 2.2.1, and you must comply with the monitoring requirements of Part 6.2.4. Note that this provision also applies to situations where EPA determines that your discharge is not controlled as necessary to meet water quality standards in a downstream water segment, even if your discharge is to a receiving water that is not specifically identified on a Section 303(d) list.

2.2.2.3 New Discharge to an Impaired Water. If your authorization to discharge under this permit relied on Part 1.1.4.8 for a new discharge to an impaired water, you must implement and maintain any control measures or conditions on your site that enabled you to become eligible under Part 1.1.4.8, and modify such measures or conditions as necessary pursuant to any Part 4 corrective actions. You are also required to comply with Part 2.2.1 and the monitoring requirements of Parts 6.2.4.

2.2.3 Tier 2 Antidegradation Requiremen ts for New or Increased Dischargers.

If you are a new discharger, or an existing discharger required to notify EPA of an increased discharge consistent with Part 7.7 (i.e., a “planned changes” report), and you discharge directly to waters designated by a state or tribe as Tier 2 or Tier 2.5 for antidegradation purposes under 40 CFR 131.12(a), in the absence of information demonstrating otherwise, EPA expects that compliance with the stormwater control requirements of this permit will result in discharges that will not lower the water quality of the applicable water. See list of Tier 2 and 2.5 waters in Appendix L. However, EPA may notify you that additional analyses, control measures, or other permit conditions are necessary to comply with the applicable antidegradation requirements, or notify you that an individual pe rmit application is necessary in accordance with Part 2.2.1.

2.3 Requirements Relating to Endanger ed Species and Historic Properties.

If your eligibility under either Part 1.1.4.5 or Part 1.1.4.6 was made possible through your, or another operator’s, agreement to include certain measures or prerequisite actions, or implement certain terms and conditions, you must comply with all such agreed-upon requirements to maintain eligibility under the MSGP.

3. Inspections.

3.1 Routine Facility Inspections.

During normal facility operating hours you must conduct inspections of areas of the facility covered by the requirements in this permit, including the following:

x Areas where industrial ma terials or activities are exposed to stormwater.

x Areas identified in the SWPPP and those that are potential pollutant sources (see Part 5.2.3).

x Areas where spills and leaks have occurred in the past 3 years.

x Discharge points.

x Control measures used to comply with the effluent limits contained in this permit.

Inspections must be conducted at least quarterly (i.e., once each calendar quarter), or in some instances more frequently (e.g., monthly), as appropriate. Increased frequency may be appropriate for some types of eq uipment, processes and stormwater control measures, or areas

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of the facility with significant activities and materials exposed to stormwater. At least one of your routine inspections must be conducted during a period when a stormwater discharge is occurring.

Inspections must be performed by qualified personnel (as defined in Appendix A) with at least one member of your stormwater pollution prevention team participating. Inspectors must consider the results of visual and analytical moni toring (if any) for the past year when planning and conducting inspections.

During the inspection you must examine or look out for the following:

x Industrial materials, residue or trash that may have or could come into contact with stormwater.

x Leaks or spills from industrial equipment, drums, tanks and other containers.

x Offsite tracking of industrial or waste material s, or sediment where vehicles enter or exit the site.

x Tracking or blowing of raw, final or waste materials from areas of no exposure to exposed

areas.

x Control measures needing replacement, maintenance or repair.

During an inspection occurring during a stormwater discharge, control measures implemented to comply with effluent limits must be observed to ensure they are functioning correctly. Discharge points, as defined in Appendix A, must also be observed during this inspection. If such discharge locations are inaccessible, nearby downstream locations must be inspected.

3.1.1 Exceptions to Routine Facility Inspections for Inactive and Unstaffed Sites.

The requirement to conduct facility inspecti ons on a routine basis does not apply at a facility that is inactive and unstaffed, as long as there are no industrial materials or activities exposed to stormwater. Such a facility is only required to conduct an annual site inspection in accordance with Part 3.1. To invoke this exception, you must indicate your facility is inactive and unstaffed on your NOI. If you are already covered under the permit and your facility has changed from active to inactive and unstaffed, you must modify your NOI. You must also maintain a statement in your SWPPP pursuant to Part 5.2.5.2 indicating that the site is inactive and unstaffed, and that there are no industrial ma terials or activities exposed to precipitation, in accordance with the substantive requirements in 40 CFR 122.26(g)(4)(iii). The statement must be signed and certified in accordance with Appendix B, Subsection 11. If circumstances change and industrial materials or activities become exposed to stormwater or your facility becomes active and/or staffed, this exception no longer applies and you must immediately resume routine facility inspections. If you are not qualified for this exception at the time you are authorized under this permit, but during the permit term you become qualified because your facility is inactive and unstaffed, and there are no industrial materials or activities that are exposed to stormwater, you must include the same signed and certified statement as above and retain it with your records pursuant to Part 5.5.

Inactive and unstaffed facilities covered under Sectors G (Metal Mining), H (Coal Mines and Coal Mining-Related Facilities), and J (Non-Metallic Mineral Mining and Dressing), are not required to meet the “no industrial materials or activities exposed to stormwater” standard to be eligible for this exception from routine inspections, consistent with the requirements established in Parts 8.G.8.4, 8.H.8.1, and 8.J.8.1.

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3.1.2 Routine Facility Inspection Documentation.

You must document the findings of your facility inspections and maintain this report with your SWPPP as required in Part 5.5. Do not submit your routine facility inspection report to EPA, unless specifically requested to do so. However, you must summarize your findings in the annual report per Part 7.5. Document all findings, including but not limited to, the following information:

x The inspection date and time;

x The name(s) and signature( s) of the inspector(s);

x Weather information;

x All observations relating to the implementation of control measures at the facility, including:

o A description of any discharges occurr ing at the time of the inspection;

o Any previously unidentified discharg es and/or pollutants from the site;

o Any evidence of, or the potential for, pollutants entering the drainage system;

o Observations regarding the physical condition of and around all outfalls including any flow dissipation devices, and evidence of pollutants in discharges and/or the receiving water;

o Any control measures needing mainte nance, repairs, or replacement;

x Any additional control measures needed to comply with the permit requirements; and

x Any incidents of noncompliance observed.

Any corrective action required as a result of a routine facility inspection must be performed consistent with Part 4 of this permit.

If you performed a discharge visual assessment required in Part 3.2 during your facility inspection, you may include the results of the assessme nt with the report required in Part 3.1.2, as long as all components of both types of inspections are included in the report.

3.2 Quarterly Visual Assessment of Stormwater Discharges.

3.2.1 Quarterly Visual Assessment Procedures.

Once each quarter for the entire permit term, you must collect a stormwater sample from each outfall (except as noted in Part 3.2. 3) and conduct a visual assessment of each of these samples. These samples are not required to be collected consistent with 40 CFR Part 136 procedures but should be collected in such a ma nner that the samples are representative of the stormwater discharge. Guidance on monitoring is available at www.epa.gov/npdes/stormwater/msgp

.

The visual assessment must be made:

x Of a sample in a clean, clear glass, or plastic container, and examined in a well-lit
area;

x On samples collected within the first 30 minutes of an actual discharge from a storm event. If it is not possible to collect the sample within the first 30 minutes of discharge, the sample must be collected as soon as practicable after the first 30 minutes and you must document why it was not possible to take samples within the first 30 minutes. In the case of snowmelt, samples must be taken during a period with a measurable discharge from your site; and

x For storm events, on discharges that occur at least 72 hours (3 days) from the previous discharge. The 72-hour (3-day) storm interval does not apply if you

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document that less than a 72-hour (3-day) interval is representative for local storm events during the sampling period.

You must visually inspect or observe the sample for the following water quality characteristics:

x Color;

x Odor;

x Clarity (diminished);

x Floating solids;

x Settled solids;

x Suspended solids;

x Foam;

x Oil sheen; and

x Other obvious indicators of stormwater pollution.

Whenever the visual assessment shows obvious signs of stormwater pollution, you must initiate the corrective action procedures in Part 4.

3.2.2 Quarterly Visual Assessment Documentation.

You must document the results of your visual assessments and maintain this documentation onsite with your SWPPP as required in Part 5.5. You are not required to submit your visual assessment findings to EPA, unless specifically requested to do so. Your documentation of the visual assessment must include, but not be limited to:

x Sample location(s);

x Sample collection date and time, and visual assessment date and time for each sample;

x Personnel collecting the sample and performing visual assessment, and their signatures;

x Nature of the discharge (i.e., runoff or snowmelt);

x Results of observations of the stormwater discharge;

x Probable sources of any observed stormwater contamination; and

x If applicable, why it was not possible to take samples within the first 30 minutes.

Any corrective action required as a result of a quarterly visual assessment must be performed consistent with Part 4 of this permit.

3.2.3 Exceptions to Quarterly Visual Assessments.

Adverse Weather Conditions : When adverse weather condit ions prevent the collection of samples during the quarter, you must take a substitute sample during the next qualifying storm event. Documentation of the rationale for no visual assessment for the quarter must be included with your SWPPP records as described in Part 5.5. Adverse conditions are those that are dangerous or create inaccessibility for personnel, such as local flooding, high winds, or electrical stor ms, or situations that otherwise make sampling impractical, such as extended frozen conditions.

Climates with Irregular Stormwater Runoff : If your facility is located in an area where limited rainfall occurs during many parts of the year (e.g., arid or semi-arid climate) or in an area where freezing conditio ns exist that prevent runoff from occurring for extended periods, then your samples for the quarterly visual assessments may be distributed during seasons when precipitation runoff occurs.

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Areas Subject to Snow : In areas subject to snow, at least one quarterly visual assessment must capture snowmelt discharge, as describe d in Part 6.1.3, taking into account the exception described above for climates with irregular stormwater runoff.

Inactive and Unstaffed Sites : The requirement for a quarterl y visual assessment does not apply at a facility that is inactive and unstaffed, as long as there are no industrial materials or activities exposed to stormwater. To invoke this exception, you must maintain a statement in your SWPPP as required in Part 5.2.5.2 indicating that the site is inactive and unstaffed, and that there are no industrial materials or activities exposed to precipitation, in accordance with the substantive requirements in 40 CFR 122.26(g)(4)(iii). The statement must be signed and certified in accordance with Appendix B, Subsection 11. If circumstances change and industrial materials or activities become exposed to stormwater or your facility becomes active and/or staffed, this exception no longer applies and you must immediately resume quarterly visual assessments. If you are not qualified for this exception at the time you are authorized under this permit, but during the permit term you become qualified because your facility is inactive and unstaffed, and there are no industrial ma terials or activities that ar e exposed to stormwater, then you must include the same signed and certif ied statement as above and retain it with your records pursuant to Part 5.5.

Inactive and unstaffed facilities covered under Sectors G (Metal Mining), H (Coal Mines and Coal Mining-Related Facilities), and J (Non-Metallic Mineral Mining and Dressing), are not required to meet the “no industrial ma terials or activities exposed to stormwater” standard to be eligible for this exception from quarterly visual assessment, consistent with the requirements established in Parts 8.G.8.4, 8.H.8.1, and 8.J.8.1.

Substantially Identical Outfalls : If your facility has two or more outfalls that you believe discharge substantially identical effluents, as documented in Part 5.2.5.3, you may conduct quarterly visual assessments of the discharge at just one of the outfalls and report that the results also apply to the substantially identical outfall(s) provided that you perform visual assessments on a rotating basis of each substantially identical outfall throughout the period of your coverage under this permit.

If stormwater contamination is identified through visual assessment performed at a substantially identical outfall, you must assess and modify your control measures as appropriate for each outfall represen ted by the monitored outfall.

4. Corrective Actions.

4.1 Conditions Requiring SWPPP Review and Revision to Eliminate Problems.

When any of the following conditions occur or are detected during an inspection, monitoring or other means, or the EPA, or local, state or tribal entity informs you that any of the following conditions has occurred, you must review your SWPPP (e.g., sources of pollution, spill and leak procedures, non-stormwater discharges, selection, design, installation and implementation of your control measures) to de termine if and where revi sions may need to be made to eliminate the condition, prevent its reoccurrence, and ensure that effluent limits are met:

x An unauthorized release or discharge (e.g., spill, leak, or discharge of non-stormwater not authorized by this or another NPDES permit) occurs at your facility.

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x A discharge violates a numeric effluent limit.

x Your control measures are not stringent enou gh for the discharge to meet applicable water quality standards or the non-numeric effluent limits in this permit.

x A required control measure was never installed, was installed incorrectly, or not in accordance with Parts 2 and/or 8, or is not being properly operated or maintained.

x Visual assessments indicate obvious signs of stormwater pollution (e.g., color, odor, floating solids, settled solids, suspended solids, foam).

x The average of four quarterly sampling resu lts exceeds an applicable benchmark (see Part 6.2.1.2). If less than four benchmark samples have been taken, but the results are such that an exceedance of the four quarter average is mathematically certain (i.e., if the sum of quarterly sample results to date is more than four times the benchmark level) this is considered a benchmark ex ceedance, triggering this review.

x Construction or a change in design, operation, or maintenance at your facility that significantly changes the nature of pollutants discharged in stormwater from your facility, or significantly increases the quantity of pollutants discharged.

4.2 Corrective Actions and Deadlines.

4.2.1 Immediate Actions.

In all circumstances, you must immediatel y take all reasonable steps necessary to minimize or prevent the discharge of pollutants until a permanent solution is installed and made operational, including cleaning up any contaminated surfaces so that the material will not discharge in subsequent storm events.

Note: In this context, the term “immediately” requires you to, on the same day a condition requiring corrective action is found, take all reasonable steps to minimize or prevent the discharge of pollutants until a permanent solution is installed and made operational. However, if a problem is identified at a time in the work day when it is too late to initiate corrective action, the initiation of corrective action must begin on the following work day.

4.2.2 Subsequent Actions.

If you determine that additional changes are necessary beyond those implemented pursuant to Part 4.2.1, you must install a new or modified control and make it operational, or complete the repair, before the next storm event if possible, and within 14 calendar days from the time of discovery. If it is infeasible to co mplete the installation or repair within 14 calendar days, you must document why it is infeasible to complete the installation or repair within the 14- day timeframe. You must also identify your schedule for completing the work, which must be done as soon as practicable after the 14-day timeframe but no longer than 45 days after discovery.

Where your corrective actions result in chan ges to any of the controls or procedures documented in your SWPPP, you must modify your SWPPP accordingly within 14 calendar days of completing corrective action work.

These time intervals are not grace periods, but are schedules considered reasonable for documenting your findings and for making repairs and improvements. They are included in this permit to ensure that the conditions prompting the need for these repairs and improvements are not allowed to persist indefinitely.

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4.3 Corrective Action Documentation.

You must document the existence of any of the conditions listed in Part 4.1 within 24 hours of becoming aware of such condition. Yo u are not required to submit your corrective action documentation to EPA, unless specifically requested to do so. Include the following information in the documentation:

x Identification and description of the conditio n triggering the need for corrective action review. For any spills or leaks, include the following information: a description of the incident including material, date/time, amou nt, location, and reason for spill, and any leaks, spills or other releases that resulted in discharges of pollutants to waters of U.S., through stormwater or otherwise;

x Date the condition was identified; and

x A discussion of whether the triggering condition requires corrective action. For any spills or leaks, include response actions, the date/time clean-up completed, notifications made, and staff involved. Also include any measures taken to prevent the reoccurrence of such releases (see Part 2.1.2.4).

You must also document the corrective actions taken that occurred as a result of the conditions listed in Part 4.1, with in 14 days from the time of discovery of any of those conditions. Provide the dates when each corrective action was initiated and completed (or is expected to be completed). If applicable, document why it is infeasible to complete necessary installations or repairs within the 14-day timeframe and document your schedule for installing the controls and making them operational as soon as practicable after the 14-day timeframe.

4.4 Effect of Corrective Action.

If the event triggering the review is a perm it violation (e.g., non-compliance with an effluent limit), correcting it does not remove the original violation. Additionally, failing to take corrective action in accordance with this section is an additional permit violation. EPA will consider the appropriateness and promptness of corrective action in determining enforcement responses to permit violations.

4.5 Substantially Identical Outfalls.

If the event triggering corrective action is linked to an outfall that represents other substantially identical outfalls, your review must assess the need for corrective action for each outfall represented by the outfall that triggered the review. Any necessary changes to control measures that affect these other outfalls must also be made before the next storm event if possible, or as soon as practicable following that storm event. Any corrective actions must be conducted within the timeframes set forth in Part 4.2.

5. Stormwater Pollution Pr evention Plan (SWPPP).

You must prepare a SWPPP for your facility before submitting your NOI for permit coverage. If you prepared a SWPPP for coverage under a previous version of this NPDES permit, you must review and update the SWPPP to implement all provisions of this permit prior to submitting your NOI. The SWPPP does not contain effluent limitations; the limitations are contained in Parts 2, 8, and 9 of the permit. The SWPPP is intended to document the selection, design, and installation of control measures. As distinct from the SWPPP, the additional documentation requirements (see Part 5.5) ar e intended to document the implementation

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(including inspection, maintenance, monitoring, and corrective action) of the permit requirements.

Note that any discharges not expressly auth orized under the MSGP are not covered by the MSGP or the permit shield provision of the CWA Section 402(k) and they cannot become authorized or shielded by disclosure to EPA via the SWPPP or by any other means (e.g., during an inspection).

5.1 Person(s) Responsible for SWPPP Preparation.

The SWPPP shall be prepared in accordance with good engineering practices and to industry standards. The SWPPP may be developed by either a person on your staff or a third party you hire, and it shall be certified in accordance with the signature requirements in Part 5.2.7. If EPA concludes that the SWPPP is not in substantial compliance with Part 5.2 of this permit, EPA may require the SWPPP to be reviewed, amended as necessary, and certified by a Professional Engineer, or for Sector G, H or J, by a Professional Geologist, with the education and experience necessary to prepare an adequate SWPPP.

5.2 Contents of Your SWPPP.

For coverage under this permit, your SWPPP must contain all of the following elements:

x Stormwater pollution prevention team (see Part 5.2.1);

x Site description (see Part 5.2.2);

x Summary of potential pollutant sources (see Part 5.2.3);

x Description of control meas ures (see Part 5.2.4);

x Schedules and procedures (see Part 5.2.5);

x Documentation to support eligibility considerations under other federal laws (see Part 5.2.6); and

x Signature requirements (see Part 5.2.7).

Where your SWPPP refers to procedures in other facility documents, such as a Spill Prevention, Control and Countermeasure (SPCC) Plan or an Environmental Management System (EMS), copies of the relevant portions of those documents must be kept with your SWPPP.

5.2.1 Stormwater Polluti on Prevention Team.

You must identify the staff members (by name or title) that comprise the facility’s stormwater pollution prevention team as well as their individual responsibilities. Your stormwater pollution prevention team is responsible for ov erseeing development of the SWPPP, any later modifications to it, and for compliance with the re quirements in this permit. Each member of the stormwater pollution prevention team must have ready access to either an electronic or paper copy of applicable portions of this permit, the most updated copy of your SWPPP, other relevant documents or information that must be kept with the SWPPP.

5.2.2 Site Description.

Your SWPPP must include the following:

x Activities at the Facility. Provide a description of the nature of the industrial activities at your facility.

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x General location map . Provide a general location map (e.g., U.S. Geological Survey (USGS) quadrangle map) with enough detail to identify the location of your facility and all receiving waters for your stormwater discharges.

x Site map. Provide a map showing:



###  Boundaries of the property and the size of the property in acres;



###  Location and extent of significant structures and impervious surfaces;



###  Directions of stormwater flow (use arrows);



###  Locations of all stormwater control measures;



###  Locations of all receiving waters, including wetlands, in the immediate vicinity of your facility. Indicate which waterbodies are listed as impaired and which are identified by your state tribe or EPA as Tier 2 or Tier 2.5 waters;



###  Locations of all stormwater conveyances including ditches, pipes, and swales;



###  Locations of potential pollutant sources identified under Part 5.2.3.2;



###  Locations where significant spills or leaks identified under Part 5.2.3.3 have occurred;



###  Locations of all stormwater monitoring points;



###  Locations of stormwater inlets and outfalls, with a unique identification code for each outfall (e.g., Outfall No. 1, No. 2), indicating if you are treating one or more outfalls as “substantially identical” under Parts 3.2.3, 5.2.5.3, and 6.1.1, and an approximate outline of the areas draining to each outfall;



###  If applicable, municipal separate storm sewer systems and where your stormwater discharges to them;



###  Areas of federally-listed critical habitat for endangered or threatened species, if applicable.



###  Locations of the following activities where such activities are exposed to precipitation:

o fueling stations;

o vehicle and equipment maintena nce and/or cleaning areas;

o loading/unloading areas;

o locations used for the treatment, storage, or disposal of wastes;

o liquid storage tanks;

o processing and storage areas;

o immediate access roads and rail lines used or traveled by carriers of raw materials, manufactured products, waste material, or by-products used or created by the facility;

o transfer areas for substances in bulk; and

o machinery.



###  Locations and sources of run-on to your site from adjacent property that contains significant quantities of pollutants.

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5.2.3 Summary of Potential Pollutant Sources.

You must document areas at your facility wh ere industrial materials or activities are exposed to stormwater or from which allowable non-stormwater discharges may be released. Industrial materials or activitie s include, but are not limited to: material handling equipment or activities; industrial machinery; raw materials; industrial production and processes; and intermediate products, by-products, final products, and waste products. Material handling activities include, but are not limited to: the storage, loading and unloading, transportation, disposal, or conveyance of any raw material, intermediate product, final product or waste product. For structures located in areas of industrial activity, you must be aware that the structures themselves are potential sources of pollutants. This could occur, for example, when metals such as aluminum or copper are leached from the structures as a result of acid rain.

For each area identified, th e description must include:

5.2.3.1 Activities in the Area. A list of the industrial activities exposed to stormwater (e.g., material storage; equipment fueling, mainte nance, and cleaning; cutting steel beams).

5.2.3.2 Pollutants. A list of the pollutant(s) or pollutant constituents (e.g., crankcase oil, zinc, sulfuric acid, and cleaning solvents) associated with each identified activity, which could be exposed to rainfall or snowmelt and could be discharged from your facility. The pollutant list must include all significant materials that have been handled, treated, stored, or disposed, and that have been expo sed to stormwater in the three years prior to the date you prepare or amend your SWPPP.

5.2.3.3 Spills and Leaks. You must document where potential spills and leaks could occur that could contribute pollutants to stormwater discharges, and the corresponding outfall(s) that would be affected by such spills and leaks. You must document all significant spills and leaks of oil or toxic or hazardous pollutants that actually occurred at exposed areas, or that drained to a stormwater conveyance, in the three years prior to the date you prepare or amend your SWPPP.

Note: Significant spills and leaks include, but are not limited to, releases of oil or hazardous substances in exce ss of quantities that are reportable under CWA Section 311 (see 40 CFR 110.6 and 40 CFR 117.21) or Section 102 of the Comprehensive Environmental Response, Compensation and Li ability Act (CERCLA), 42 USC §9602. This permit does not relieve you of the reporting requirements of 40 CFR 110, 40 CFR 117, and 40 CFR 302 relating to spills or other releases of oils or hazardous substances.

5.2.3.4 Non-Stormwater Discharges. You must document that you have evaluated for the presence of non-stormwater discharges. If non-stormwater discharges requiring NPDES permit coverage other than those specifically authorized in Part 1.1.3 will be discharged, such non-stormwater discharges are not covered by this permit or the permit shield provision of the CWA Section 402(k) and must be covered under another NPDES permit.

Documentation of your evaluation must include:

x The date of the evaluation;

x A description of the evaluation criteria used;

x A list of the outfalls or onsite drainage points that were directly observed during the evaluation; and

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x The action(s) taken, such as a list of control measures used to eliminate unauthorized discharge(s), or documentation that a separate NPDES permit was obtained. For example, a floor drain was sealed, a sink drain was re-routed to sanitary, or an NPDES permit application was submitted for an unauthorized cooling water discharge.

5.2.3.5 Salt Storage. You must document the location of any storage piles containing salt used for deicing or other commercial or industrial purposes.

5.2.3.6 Sampling Data. You must summarize all stormwater discharge sampling data collected at your facility during the previous permit term.

5.2.4 Description of Control Me asures to Meet Technology-B ased and Water Quality-Based Effluent Limits.

You must document the location and type of control measures you have specifically chosen and/or designed to comply with:

x Effluent limits in Part 2.1.2;

x Applicable effluent limitations guidelines-based limits in Part 2.1.3;

x Water quality-based effluent limits in Part 2.2;

x Any agreed-upon endangered species requirements in Part 2.3; and

x Applicable effluent limits in Parts 8 and 9.

Regarding your control measures, you must also document, as appropriate:

x How you addressed the selection and design considerations in Part 2.1.1.

x How they address the pollutant sources identified in Part 5.2.3.

Effluent limit requirements in Part 2.1.2 that do not involve the site-specific selection of a control measure or are specific activity requirements (e.g., “drain fluids from equipment and vehicles that will be decommissioned”) are marked with an asterisk (*). For the requirements marked with an asterisk, you may includ e extra information (e.g., the types of vehicles/equipment to be drained of fluids and fate of those fluids, or you may just “cut-andpaste” these effluent limits verbatim into your SWPPP without providing additional documentation.

5.2.5 Schedules and Procedures.

5.2.5.1 Pertaining to Control Measures Used to Comply with the Effluent Limits in Part 2. The following must be documented in your SWPPP:

x Good Housekeeping (See Part 2.1.2.2) – A schedule for regular pickup and disposal of waste materials, along with routine inspections for leaks and conditions of drums, tanks and containers;

x Maintenance (See Part 2.1.2.3) – Preventative maintenance procedures, including regular inspections, testing, maintenance and repair of all control measures to avoid situations that may result in leaks, spills, and other releases, and any back-up practices in place should a runoff event occur while a control measure is off-line. The SWPPP shall include the schedule or frequency for maintaining all control measures used to comply with the effluent limits in Part 2;

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x Spill Prevention and Response Procedures (See Part 2.1.2.4) – Procedures for preventing and responding to spills and le aks, including notification procedures. For preventing spills, include in your SWPPP the control measures for material handling and storage, and the procedur es for preventing spills that can contaminate stormwater. Also specify cleanup equipment, procedures and spill logs, as appropriate, in the event of spills. You may reference the existence of other plans for Spill Prevention Control and Countermeasure (SPCC) developed for the facility under Section 311 of the CWA or BMP programs otherwise required by an NPDES permit for the facility, provided that you keep a copy of that other plan onsite and make it available for review consistent with Part 5.4;

x Erosion and Sediment Control (Part 2.1.2.8) – If you use polymers and/or other chemical treatments as part of your controls, you must identify the polymers and/or chemicals used and the purpose; and

x Employee Training (Part 2.1.2.8) – The elem ents of your employee training plan shall include all, but not be limited to, the requirements set forth in Part 2.1.2.8, and also the following:

o The content of the training; The fr equency/schedule of training for employees who have duties in areas of industrial activities subject to this permit;

o A log of the dates on which specif ic employees received training.

5.2.5.2 Pertaining to Inspections. You must document in your SWPPP your procedures for performing, as appropriate, the types of inspections specified by this permit, including:

x Routine facility inspections (see Part 3.1) and;

x Quarterly visual assessment of stor mwater discharges (see Part 3.2).

For each type of inspection performed, your SWPPP must identify:

x Person(s) or positions of person(s) responsible for inspection;

x Schedules for conducting inspections, including tentative schedule for facilities in climates with irregular stormwater ru noff discharges (see Part 3.2.3); and

x Specific items to be covered by the inspection, including schedules for specific outfalls.

If you are invoking the exception for inactive and unstaffed sites relating to routine facility inspections and quarterly visual assessments, you must include in your SWPPP the information to support this claim as required by Parts 3.1.1 and 3.2.3.

5.2.5.3 Pertaining to Monitoring. You must document in your SWPPP your procedures for conducting the five types of analytical monitoring specified by this permit, where applicable to your facility, including:

x Benchmark monitoring (see Part 6.2.1);

x Effluent limitations guidelines monitoring (see Part 6.2.2);

x State- or tribal-specific monitoring (see Part 6.2.3);

x Impaired waters monitoring (see Part 6.2.4); and

x Other monitoring as required by EPA (see Part 6.2.5).

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For each type of monitoring, your SWPPP must document:

x Locations where samples are collected, including any determination that two or more outfalls are substantially identical;

x Parameters for sampling an d the frequency of sampling for each parameter;

x Schedules for monitoring at your facility, including schedule for alternate monitoring periods for climates with irre gular stormwater runoff (see Part 6.1.6);

x Any numeric control values (benchmarks, effluent limitations guidelines, TMDLrelated requirements, or other requirements) applicable to discharges from each outfall; and

x Procedures (e.g., responsible staff, logistics, laboratory to be used) for gathering storm event data, as specified in Part 6.1.

If you are invoking the exception for inactive and unstaffed sites for benchmark monitoring, you must include in your SWPPP the information to support this claim as required by Part 6.2.1.3.

You must document the following in your SWPPP if you plan to use the substantially identical outfall exception for your quarterly visual assessment requirements in Part 3.2.3 or your benchmark monitoring requirements in Part 6.2.1:

x Location of each of the substantially identical outfalls;

x Description of the general industrial activities conducted in the drainage area of each outfall;

x Description of the control measures implemented in the drainage area of each outfall;

x Description of the exposed materials located in the drainage area of each outfall that are likely to be significant contributors of pollutants to stormwater discharges;

x An estimate of the runoff coefficient of the drainage areas (low = under 40%; medium = 40 to 65%; high = above 65%); and

x Why the outfalls are expected to disc harge substantially identical effluents.

5.2.6 Documentation to Support Eligibility Considerations Under Other Federal Laws.

5.2.6.1 Documentation Regarding Endangered Species. You must keep with your SWPPP the documentation supporting your determination with regard to Part 1.1.4.5 (Endangered and Threatened Species and Cr itical Habitat Protection).

5.2.6.2 Documentation Regarding Historic Properties. You must keep with your SWPPP the documentation supporting your determination with regard to Part 1.1.4.6 (Historic Properties Preservation).

5.2.7 Signature Requirements.

You must sign and date your SWPPP in accordance with Appendix B, Subsection 11, including the date of signature.

5.3 Required SWPPP Modifications.

You must modify your SWPPP based on the corrective actions and deadlines required under Part 4.2 and that you documented under Part 4.3, such that the triggering conditions for

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corrective action in Part 4.1 do not reoccur. SW PPP modifications must be signed and dated in accordance with Appendix B, Subsection 11.

5.4 SWPPP Availability.

You must retain a complete copy of your cu rrent SWPPP required by this permit at the facility in any accessible format. A complete SWPPP includes any documents incorporated by reference and all documentation supporting your permit eligibility pursuant to Part 5.2.6 of this permit, as well as your signed and dated certification page. Regardless of the format, the SWPPP must be immediately available to facility employ ees, EPA, a state or tribe, the operator of an MS4 receiving discharges from the site; and representatives of the U.S. Fish and Wildlife Service (USFWS) or the National Marine Fisheries Service (N MFS) at the time of an onsite inspection. Your current SWPPP or certain information from your current SWPPP described below must also be made available to the public (except any confidential business information (CBI) or restricted information (as defined in Appendix A)), but you must clearly identify those portions of the SWPPP that are being withheld from public access ; to do so, you must comply with one of the following two options:

5.4.1 SWPPP Posting on the Internet.

If you provide a URL in your NOI where your SWPPP can be found, and maintain your current SWPPP at this URL, you will have complied with the public availability requirements for the SWPPP. To remain current, you must post any SWPPP modifications, reco rds and other reporting elements required for the previous year at the same URL as the main bo dy of the SWPPP. The SWPPP update shall be no later than 45 days after conducting the fourth (i.e., final) routine facility inspection for the year required in Part 3.1. If you did not provide a SWPPP URL in your NOI, you may reopen your NOI at any time subsequent to your original NOI submittal to add a URL where your current SWPPP can be found. You are no t required to post any confidential business CBI or restricted information (as defined in Appendix A) (such information may be redacted), but you must clearly identify those portions of the SWPPP that are being withheld from public access. CBI may not be withheld from those staf f cleared for CBI review within EPA, USFWS or NMFS.

5.4.2 SWPPP Information Provided on NOI Form.

If you did not provide a SWPPP URL in your NOI, your NOI must include the information required by Part 7.3. Irrespective of this requirement, EPA may provide access to portions of your SWPPP to a member of the public upon request (except any CBI or restricted information (as defined in Appendix A)).

5.5 Additional Documentation Requirements.

You are required to keep the following insp ection, monitoring, and certification records with your SWPPP that together keep your records complete and up-to-date, and demonstrate your full compliance with the conditions of this permit:

x A copy of the NOI submitted to EPA along with any correspondence exchanged between you and EPA specific to coverage under this permit;

x A copy of the acknowledgment you receive fr om the eNOI system assigning your NPDES ID;

x A copy of this permit (an electronic copy easily available to SWPPP personnel is also acceptable);

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x Documentation of maintenance and repairs of control measures, including the date(s) of regular maintenance, date(s) of discovery of areas in need of repair/replacement, and for repairs, date(s) that the control measure(s) returned to full function, and the justification for any extended maintenance/repair schedules (see Part 2.1.2.3);

x All inspection reports, including the Routine Facility Inspection Reports (see Part 3.1) and Quarterly Visual Assessment Reports (see Part 3.2);

x Description of any deviations from the schedule for visual assessments and/or monitoring, and the reason for the deviations (e.g., adverse weather or it was impracticable to collect samples within the first 30 minutes of a measurable storm event) (see Parts 3.2.3, 6.1.4, and 6.2.1.2);

x Description of any corrective action triggering event/condition listed in Part 4.1 and documented per Part 4.3;

x Documentation of any benchmark exceedances and the type of response to the exceedance you employed, including:

o the corrective action taken;

o a finding that the exceedance was due to natural background pollutant levels,
or;

o a finding that no further pollutant reductions were technologically available and economically practicable and achievable in light of best industry practice consistent with Part 6.2.1.2.

x Documentation to support any determination that pollutants of concern are not expected to be present above natural backgr ound levels if you discharge directly to impaired waters, and that such pollutants were not detected in your discharge or were solely attributable to natural background sources (see Part 6.2.1.2); and

x Documentation to support your claim that your facility has changed its status from active to inactive and unstaffed with respect to the requirements to conduct routine facility inspections (see Part 3.1), quarterly visual assessments (see Part 3.2), and/or benchmark monitoring (see Part 6.2.1.3).

6. Monitoring.

You must collect and analyze stormwater samples and document monitoring activities consistent with the procedures described in Part 6 and Appendix B, Subsections 10 – 12, and any additional sector-specific or state/tribal-specifi c requirements in Parts 8 and 9, respectively. Refer to Part 7 for reporting an d recordkeeping requirements.

6.1 Monitoring Procedures.

6.1.1 Monitored Outfalls.

Applicable monitoring requirements apply to each outfall authorized by this permit, except as otherwise exempt from monitoring as a “substantially identical outfall.” If your facility has two or more outfalls that you believe discharge substantially identical effluents, based on the similarities of the general industrial activities and control measures, exposed materials that may significantly contribute pollutants to stormwat er, and runoff coefficien ts of their drainage areas, you may monitor the effluent of just one of the outfalls and report that the results also apply to the substantially identical outfall(s). As required in Part 5.2.5.3, your SWPPP must identify each outfall authorized by this permit and describe the rationale for any substantially identical outfall determinations. The allowance for monitoring only one of the substantially identical outfalls is not applicable to any outfalls with numeric effluent limitations. You are required to monitor each outfall covered by a numeric effluent limit as identified in Part 6.2.2.

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6.1.2 Commingled Discharges.

If discharges authorized by this permit commingle with discharges not authorized under this permit, any required sampling of the authorized discharges must be performed at a point before they mix with other waste streams, to the extent practicable.

6.1.3 Measurable Storm Events.

All required monitoring must be performed on a storm event that results in an actual discharge from your site (“measurable storm event”) that follows the preceding measurable storm event by at least 72 hours (3 days). The 72-hour (3-day) storm interval does not apply if you are able to document that less than a 72-hour (3-day) interval is representative for local storm events during the sampling period. In the case of snowmelt, the monitoring must be performed at a time when a measurable discharge occurs at your site.

For each monitoring event, except snowmelt monitoring, you must identify the date and duration (in hours) of the rainfall event, rainfall total (in inches) for that rainfall event, and time (in days) since the previous measurable storm event. For snowmelt monitoring, you must identify the date of the sampling event.

6.1.4 Sample Type.

You must take a minimum of one grab sample from a discharge resulting from a measurable storm event as described in Part 6.1.3. Samples must be collected within the first 30 minutes of a measurable storm event. If it is not possible to collect the sample within the first 30 minutes of a measurable storm event, the sample must be collected as soon as practicable after the first 30 minutes and documentation must be kept with the SWPPP explaining why it was not possible to take samples within the first 30 minutes. In the case of snowmelt, samples must be taken during a period with a measurable discharge.

6.1.5 Adverse Weather Conditions.

When adverse weather conditions as described in Part 3.2.3 prevent the collection of samples according to the relevant monitoring schedule, you must take a substitute sample during the next qualifying storm event. Adverse weather does not exempt you from having to file a benchmark monitoring report in accordance with your sampling schedule. You must report any failure to monitor as specified in Part 7. 4 indicating the basis for not sampling during the usual reporting period.

6.1.6 Climates with Irregular Stormwater Runoff.

If your facility is located in areas where limited rainfall occurs during parts of the year (e.g., arid or semi-arid climates) or in areas wh ere freezing condit ions exist that prevent runoff from occurring for extended periods, required monitoring events may be distributed during seasons when precipitation occurs, or when snowmelt results in a measurable discharge from your site. You must still collect the required number of samples.

6.1.7 Monitoring Periods.

Monitoring requirements in this permit begin in the first full quarter following either January 1, 2014 or your date of discharge authorization, whichever date comes later. If your monitoring is

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required on a quarterly basis (e.g., benchmark monitoring), you must monitor at least once in each of the following 3-month intervals:

x January 1 – March 31;

x April 1 – June 30;

x July 1 – September 30; and

x October 1 – December 31.

For example, if you obtain permit coverage on Ju ne 2, 2014, then your first monitoring quarter is July 1 - September 30, 2014. This monitoring schedule may be modified in accordance with Part 6.1.6 if the revised schedule is documented with your SWPPP and provided to EPA with your first monitoring report.

6.1.8 Monitoring for Allowable Non-Stormwater Discharges.

You are only required to monitor allowable non-stormwater discharges (as delineated in Part 1.1.3) when they are commingled with stor mwater discharges associated with industrial activity.

6.2 Req uired Monitoring.

This permit includes five types of required analytical monitoring, one or more of which may apply to your discharge:

x Quarterly benchmark monitoring (see Part 6.2.1)

x Annual effluent limitations guidelines monitoring (see Part 6.2.2);

x State- or tribal-specific monitoring (see Part 6.2.3);

x Impaired waters monitoring (see Part 6.2.4); and

x Other monitoring as required by EPA (see Part 6.2.5).

When more than one type of monitoring for the same parameter at the same outfall applies (e.g., total suspended solids once per year for an effluent limit and once per quarter for benchmark monitoring at a given outfall), you may use a single sample to satisfy both monitoring requirements (i.e., one sample satisfying both the annual effluent limit sample and one of the four quarterly benchmark monitoring samples).

All required monitoring must be conducted in accordance with the procedures described in Appendix B, Subsection 10.D.

6.2.1 Benchmark Monitoring.

This permit specifies pollutant benchmark concentrations that are applicable to certain sectors / subsectors. Benchmark monitoring data are primarily for your use to determine the overall effectiveness of your control measures and to assist you in knowing when additional corrective action(s) may be necessary to comply with the effluent limitations in Part 2.

The benchmark concentrations are not effluent limitations; a benchmark exceedance, therefore, is not a permit violation. However, if corrective action is required as a result of a benchmark exceedance, failure to conduct requir ed corrective action is a permit violation.

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At the Permittee’s discretion, more than fo ur samples may be taken during separate runoff events and used to determine the av erage benchmark parame ter concentration for facility discharges.

6.2.1.1 Applicability of Benchmark Monitoring. You must monitor for any benchmark parameters specified for the industrial sector(s), both primary industrial activity and any co-located industrial activities, applicable to your discharge. Your industry-specific benchmark concentrations are listed in the sector-specific sections of Part 8. If your facility is in one of the industrial sectors subject to benchmark concentrations that are hardness-dependent, you are required to submit to EPA with your first benchmark report a hardness value, established consistent with the procedures in Appendix J, that is representative of your receiving water.

Samples must be analyzed consistent with 40 CFR Part 136 analytic al methods and using test procedures with quantitation limits at or below benchmark values for all benchmark parameters for which you are required to sample.

6.2.1.2 Benchmark Mo nitoring Schedule. Benchmark monitoring must be conducted quarterly, as identified in Part 6.1.7, for your first fo ur full quarters of permit coverage commencing no earlier than January 1, 2014. Facilities in climates with irregular stormwater runoff, as described in Part 6.1.6, may modify this quarterly schedule provided that this revised schedule is reported to EPA when the first benchmark sample is collected and reported, and that this revised schedule is kept with the facility’s SWPPP as specified in Part 5.5. When conditions prevent you from obtaining four samples in four consecutive quarters, you must continue monitoring until you have the four samples required for calculating your benchmark monitoring average.

Data not exceeding benchmarks: After collection of four quarterly samples, if the average of the four monitoring values for any parameter does not exceed the benchmark, you have fulfilled your monitoring requirements for that parameter for the permit term.

Data exceeding benchmarks: After collection of four quarterly samples, if the average of the four monitoring values for any para meter exceeds the benchmark, you must, in accordance with Part 4, review the selection, design, installation, and implementation of your control measures to determine if modifi cations are necessary to meet the effluent limits in this permit, and either:

x Make the necessary modifications and continue quarterly monitoring until you have completed four additional quarters of monitoring for which the average does not exceed the benchmark; or

x Make a determination that no further pollutant reductions are technologically available and economically practicable and achievable in light of best industry practice to meet the technology-based effluent limits or are necessary to meet the water-quality-based effluent limitations in Parts 2.1 and 2.2 of this permit, in which case you must continue monitoring once per year. You must also document your rationale for concluding that no further pollutant reductions are achievable, and retain all records related to this documentation with your SWPPP.

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In accordance with Part 4, you must revi ew your control measures and perform any required corrective action immediately (or document why no corrective action is required), without waiting for the full four quarters of monitoring data, if an exceedance of the four quarter average is mathematically certain. If after modifying your control measures and conducting four additional quarters of monitoring, your average still exceeds the benchmark (or if an exceedance of the benchmark by the four quarter average is mathematically certain prior to conducting the full four additional quarters of monitoring), you must again review your control measures and take one of the two actions above.

Natural background pollutant levels : Following the first four quarters of benchmark monitoring (or sooner if the exceedance is triggered by less than four quarters of data, see above), if the average concentration of a pollutant exceeds a benchmark value, and you determine that exceedance of the benchmark is attributable solely to the presence of that pollutant in the natural background, you are not required to perform corrective action or additional benchmark monitoring provided that:

x The average concentration of your benchmar k monitoring results is less than or equal to the concentration of that pollutant in the natural background;

x You document and maintain with your SWPPP, as required in Part 5.5, your supporting rationale for concluding that benchmark exceedances are in fact attributable solely to natural background pollutant levels. You must include in your supporting rationale any data previously collected by you or others (including literature studies) that describe the levels of natural background pollutants in your stormwater discharge; and

x You notify EPA on your final quarterly benchmark monitoring report that the benchmark exceedances are attributable so lely to natural background pollutant levels.

Natural background pollutants include those substances that are naturally occurring in soils or ground water. Natural background pollutants do not include legacy pollutants from earlier activity on your site, or pollutants in run-on from neighboring sources which are not naturally occurring, such as other industrial sites or roadways. However, permittees may be eligible to discontinue monitoring for pollutants that occur solely from run-on sources and should consult the appropriate EPA Regional Office for related guidance.

6.2.1.3 Exception for Inactive and Unstaffed Sites. The requirement for benchmark monitoring does not apply at a facility that is inactive and unstaffed, as long as there are no industrial materials or activities exposed to stormwater. To invoke this exception, you must do the following:

x Maintain a statement with your SWPPP stating that the site is inactive and unstaffed, and that there are no industrial materials or activities exposed to stormwater in accordance with the substantive requirements in 40 CFR 122.26(g) and sign and certify the statement in accordance with Appendix B, Subsection 11; and

x If circumstances change and industrial materials or activities become exposed to stormwater or your facility becomes active and/or staffed, this exception no longer applies and you must immediatel y begin complying with the applicable benchmark monitoring requirements under Part 6.2 as if you were in your first year

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of permit coverage. You must indicate in your NOI that your facility has materials or activities exposed to stormwater or has become active and/or staffed.

x If you are not qualified for this exception at the time you are authorized under this permit, but during the permit term you become qualified because your facility is inactive and unstaffed, and there are no industrial materials or activities that are exposed to stormwater, then you must notify EPA of this change in your next benchmark monitoring report. You may discontinue benchmark monitoring once you have notified EPA, and prepared and signed the certification statement described above concerning your facility’s qualification for this special exception.

Note: This exception has different requiremen ts for Sectors G, H, and J (see Part 8).

6.2.2 Effluent Limitations Monitoring.

6.2.2.1 Monitoring Based on Effluent Limitations Guidelines. Table 6-1 identifies the stormwater discharges subject to effluent limitation gu idelines that are authorized for coverage under this permit. Beginning in the first full quarter following January 1, 2014 or your date of discharge authorization, whichever date co mes later, you must monitor once per year at each outfall containing the discharges identified in Table 6-1 for the parameters specified in the sector-specific section of Part 8.

Table 6-1. Required Monitoring for Effluent Limits Based on Effluent Limitations Guidelines Regulated Activity Effluent Limit Monitoring Frequency Sample Type Discharges resulting from spray down or intentional wettin g of lo g s at wet deck stora g e areas See Part 8.A.7 1/year Grab

Runoff from phosphate fertilizer manufacturing facilities that comes into contact with any raw materials, finished product, by-products or waste products ( SIC 2874 ) See Part 8.C.4 1/year Grab

Runoff from asphalt emulsion facilities See Part 8.D.4 1/year Grab Runoff from material storage piles at cement manufacturin g facilities See Part 8.E.5 1/year Grab

Mine dewatering discharges at crushed stone, construction sand and gravel, or industrial sand minin g facilities See Part 8.J.9 1/year Grab

Runoff from hazardous waste landfills See Part 8.K.6 1/year Grab Runoff from non-hazardous waste landfills See Part 8.L.10 1/year Grab Runoff from coal storage piles at steam electric generating facilities See Part 8.O.8 1/year Grab Existing and new primary airports with 1,000 or more annual jet departures that discharge wastewater associated with airfield pavement deicing that contains urea commin g led with stormwater See Part 8.S.7 1/year Grab

6.2.2.2 Substantially Identical Outfalls. You must monitor each outfall discharging runoff from any regulated activity identified in Table 6-1. The substantially identical outfall monitoring provisions are not available for numeric effluent limits monitoring.

6.2.2.3 Follow-up Actions if Discha rge Exceeds Numeric Effluent Limit. You must conduct followup monitoring within 30 calendar days (or during the next qualifying runoff event, should

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none occur within 30 days) of implementing corrective action(s) taken pursuant to Part 4 in response to an exceedance of a numeric effluent limit contained in this permit. See Part 9 for specific monitoring requirements a pplicable to individual states or tribes. Monitoring must be performed for any pollutant(s) that exceeds the effluent limit. If this follow-up monitoring exceeds the applicable effluent limitation, you must:

x Submit an Exceedance Report: You must submit an Exceedance Report no later than 30 days after you have received your lab result consistent with Part 7.6; and

x Continue to Monitor: You must monitor, at least quarterly, until your discharge is in compliance with the effluent limit or until EPA waives the requirement for additional monitoring.

6.2.3 State or Tribal Monitoring Provisions.

6.2.3.1 Sectors Required to Conduct State or Tribal Monitoring. You must comply with any state or tribal monitoring requirements (see Part 9) applicable to your facility’s location.

6.2.3.2 State or Tribal Monitoring Schedule. If a monitoring frequency is not specified for an applicable requirement in Part 9, you must monitor once per year for the entire permit term.

6.2.4 Discharges to Impaired Waters Monitoring.

6.2.4.1 Permittees Required to Monitor Discharges to Impaired Waters. If you discharge to an impaired water, you must monitor all pollutants for which the waterbody is impaired and for which a standard analytical method exists (see 40 CFR Part 136). See EPA’s Discharge Mapping Tool which provides information on the impairment status of the water, potential pollutants of concern, as well as applicable total maximum daily loads (TMDLs). For the purposes of this permit, a permittee discharges to an impaired water if the discharge flows directly to the impaired water.

Note: Your project will be considered to discharge to an impaired water if the first water of the U.S. to which you discharge is identified by a state, tribe, or EPA pursuant to Section 303(d) of the CWA as not meeting an applicable water quality standard, or is included in an EPA-approved or established total maximum daily load (TMDL). For discharges that enter a storm sewer system prior to discharge, the first water of the U.S. to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system.

If the pollutant of concern for the impaired waterbody is suspended solids, turbidity or sediment/sedimentation, you must monitor for Total Suspended Solids (TSS). If a pollutant of concern is expressed in th e form of an indicator or surrogate pollutant, you must monitor for that indicator or surrogate pollutant. No monitoring is required when a waterbody’s biological communities are impaired but no pollutant, including indicator or surrogate pollutants, is specified as causing the impairment, or when a waterbody’s impairment is related to hydrologic modifi cations, impaired hydrology, or other nonpollutant. Permittees should consult the appropriate EPA Regional Office for any available guidance regarding required mo nitoring parameters under this part.

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If the Discharge Mapping Tool does not provide the information you need, you may consult the appropriate EPA Regional Office for guidance regarding required monitoring parameters under this part.

6.2.4.2 Impaired Waters Monitoring and Schedule.

Discharges to impaired waters without an applicable EPA-approved or established TMDL WLA: Beginning in the first full quarter following January 1, 2014 or your date of discharge authorization, whichever date comes later, you must monitor once per year at each outfall (except substantially identical outfalls) discharging stormwater to impaired waters without an applicable EPA-approved or established TMDL waste load allocation. This monitoring requirement no longer applies once the pollutant of concern is not detected above natural background levels in your stormwater monitoring results, and you document, as required in Part 5.5 (Additional Documentation Requirements), that this pollutant is not expected to be present above natural background levels in your discharge.

If the pollutant of concern is not present and not expect ed to be present in your discharge, or it is present but you have determ ined that its presence is caused solely by natural background sources, you must include a notification to this effect in your first monitoring report, after which you may discontinue monitoring. To support a determination that the pollutant’s presence is caused solely by natural background sources, you must document and maintain with your SWPPP, as required by Part 5.5:

x An explanation of why you believe that the presence of the pollutant of concern in your discharge is not related to the activities or materials at your facility; and

x Data and/or studies that tie the presence of the pollutant of concern in your discharge to natural background sources in the watershed.

Natural background pollutants include those that occur naturally as a result of native soils, and vegetation, wildlife, or ground water. Natural background pollutants do not include legacy pollutants from earlier activity on your site, or pollutants in run-on from neighboring sources that are not naturally occurring. However, permittees may be eligible to discontinue annual monitoring for pollutants that occur solely from these sources and should consult the appropriate EPA Regional Office for related guidance.

Discharges to impaired waters with an EPA-approved or es tablished TMDL WLA: For stormwater discharges to waters for which th ere is an EPA approved or established TMDL waste load allocation, you are not required to monitor for the pollutant for which the TMDL was written unless EPA informs you, upon examination of the applicable TMDL and/or WLA, that you are subject to such a requirement consistent with the assumptions of the applicable TMDL and/or WLA. EPA’s notice will include specifications on which pollutant to monitor and the required monitoring frequency. Permittees must consult the appropriate EPA Regional Office for guidance regarding required monitoring under this part.

6.2.5 Additional Monitoring Required by EPA.

EPA may notify you of additional discharge monitoring requirements. Any such notice will briefly state the reasons for the monitoring, locations, and parameters to be monitored, frequency and period of monitoring, samp le types, and reporting requirements.

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7. Reporting and Recordkeeping.

7.1 Electronic Reporting Requirement.

You must submit all NOIs, NOTs, NOEs, Annual Reports, Discharge Monitoring Reports (DMRs), and other reporting information as appropriate electronically, unless you have received a waiver from your regional office based on one of the following conditions:

x If your headquarters is physically located in a geographic area (i.e., zip code or census tract) that is identified as under-served for broadband Internet access in the most recent report from the Federal Communications Commission; or

x If you have limitations regarding available co mputer access or computer capability.

Waivers are only granted for a one-time use for a single information submittal, i.e., an initial waiver does not apply for the entire term of the permit. If you need to submit information on paper after your first waiver, you must apply for a new waiver.

If you wish to obtain a waiver from submitting a report electronically, you must submit a request to your EPA Regional Office. EPA Regional Office contact information can be found in Part 7.9.1 of this permit. In that request yo u must document which exemption you meet, provide evidence supporting any claims, and a copy of your completed NOI form. A waiver may only be considered granted once you receive writte n confirmation from EPA or its authorized representative. Any paper version of a document or form for which you have been granted a waiver must be sent to the approving EPA Regi onal Office at the address in Part 7.9.1.

7.2 Submitting Information to EPA.

All information required to be submitted by this permit shall be submitted via EPA’s electronic NOI system, or “eNOI system”, per Part 7.1 unless the permit states otherwise or unless a waiver has been granted pursuant to Part 7.1. The eNOI system allows you to both prepare and submit required information using specific forms or suggested templates, found in the permit’s appendices. To access the eNOI system, go to www.epa.gov/npdes/stormwater/msgpenoi

.

Information required to be submitted to EPA via the eNOI System:

x Notice of Intent (Part 1.3.1);

x No Exposure Certification (Part 1.5);

x Notice of Termination (Part 1.4.1);

x Discharge Monitoring Reports (Part 7.4); and

x Annual Report (Part 7.5).

If you are given a waiver by the EPA Regional Office to submit information in paper form, you must utilize the required forms found in the Appendices to this permit and submit the above forms directly to your EPA Regional Offi ce at the address in Part 7.9.1.

Information required to be submitted to an EPA Regional office at the address in Part 7.9.1:

x New Dischargers to Water Quality-Impaired Waters (Part 1.1.4.8);

x Exceedance Report for Numeric Effluent Limits (Part 7.6); and

x Additional Reporting (Part 7.7)

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7.3 Additional SWPPP Information Required in Your NOI.

If you did not provide a SWPPP URL in your NO I per Part 5.4.1, your NOI must include the additional SWPPP information as follows:

x Onsite industrial activities exposed to stormwater, including potential spill and leak areas (see Parts 5.2.3.1, 5.2.3.3 and 5.2.3.5);

x Pollutants or pollutant constituents associated with each industrial activity exposed tostormwater that could be discharged in stormwater and/or any authorized nonstormwater discharges listed in Part 1.1.3 (see Part 5.2.3.2);

x Stormwater control measures you employ to comply with the non-numeric technologybased effluent limits required in Part 2.1.2 and Part 8, and any other measures taken to comply with the requirements in Part 2.2 Water Quality -Based Effluent Limitations (see Part 5.2.4). If you use polymers and/or ot her chemical treatments as part of your controls, you must identify the polymers an d/or chemicals used and the purpose; and

x Schedule for good housekeeping and maintenance (see Part 5.2.5.1) and schedule for all inspections required in Part 3 (see Part 5.2.5.2).

7.4 Rep orting Monitoring Data to EPA.

All monitoring data collected pursuant to Part 6.2 must be submitted to EPA using EPA’s online eNOI system ( www.epa.gov/npdes/eNOI ) (unless a waiver from electronic reporting has been granted) no later than 30 days (email date or postmark date) after you have received your complete laboratory results for all monitore d outfalls for the reporting period. If you have received a waiver per Part 7.1, paper reporting forms must be submitted by the same deadline to the appropriate address identifi ed in Part 7.9.1. See Part 9 fo r specific reporting requirements applicable to individual states or tribes.

For benchmark monitoring, note that you are required to submit sampling results to EPA no later than 30 days after receiving laboratory re sults for each quarter that you are required to collect benchmark samples, in accordance with Part 6.2.1.2. If you collect multiple samples in a single quarter (e.g., due to adverse weather conditions, climates with irregular stormwater runoff, or areas subject to snow), you are required to submit all sampling results to EPA within 30 days of receiving the laboratory results.

7.5 Annual Report.

You must submit an Annual Report to EPA electronically, per Part 7.2, by January 30 th for each year of permit coverage containing info rmation generated from the past calendar year. You must include the following information:

x The results or a summary of your past year’s routine facility inspection documentation required (Part 3.1.2) and quarterly visual assessment documentation (Part 3.2.2);

x Information copied or summarized from the corrective action documentation required per Part 4 (if applicable). If corrective action is not yet completed at the time of submission of this Annual Repo rt, you must describe the status of any outstanding corrective action(s);

x Regarding benchmark monitoring resulting in four quarter average exceedances, the rationale for why you believe that no further pollutant reductions are achievable (i.e., technologically available and economically practicable and achievable in light of best industry practices) (Part 6.2.1.2); and

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x Any incidents of noncompliance observed or, if there is no noncompliance, a certification signed in accordance with Appendix B, Subsection 11 stating the facility is in compliance with this permit.

7.6 Exceedance Report for Numeric Effluent Limits.

If follow-up monitoring pursuant to Part 6.2.2.3 exceeds a numeric effluent limit, you must submit an Exceedance Report to EPA no later than 30 days after you have received your lab results. Your report must include the following:

x NPDES ID;

x Facility name, physical address and location;

x Name of receiving water;

x Monitoring data from this and the preceding monitoring event(s);

x An explanation of the situation; what you have done and intend to do (should your corrective actions not yet be complete) to correct the violation; and

x An appropriate contact name and phone number.

Send the Exceedance Report to the appropriat e EPA Regional Office listed in Part 7.9.1.

7.7 Additional Reporting.

In addition to the reporting requirements stipulated in Part 7, you are also subject to the standard permit reporting provisions of Appendix B, Subsection 12.

Where applicable, you must submit the followi ng reports to the appropriate EPA Regional Office listed in Part 7.9.1, as applicable. If you discharge through an MS4, you must also submit these reports to the MS4 operator (identified pursuant to Part 5.2.2).

x 24-hour reporting (see Appendix B, Subsection 12.F) - You must report any noncompliance which may endanger health or the environment. Any information must be provided orally within 24 hours from the time you become aware of the circumstances;

x 5-day follow-up reporting to the 24 hour reporting (see Appendix B, Subsection 12.F) - A written submission must also be pr ovided within five days of the time you become aware of the circumstances;

x Reportable quantity spills (see Part 2.1.2.4) - You must provide notification, as required under Part 2.1.2.4, as soon as you have knowledge of a leak, spill, or other release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity.

Where applicable, you must submit the following reports to the appropriate EPA Regional Office listed in Part 7.9.2, as applicable:

x Planned changes (see Appendix B, Subsection 12.A) – You must give notice to EPA promptly, no less than 60 days prior to making any planned physical alterations or additions to the permitted facility that qualify the facility as a new source or that could significantly change the nature or significantly increase the quantity of pollutants discharged;

x Anticipated noncompliance (see Appendix B, Subsection 12.B) – You must give advance notice to EPA of any planned changes in the permitted facility or activity which you anticipate will result in noncompliance with permit

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requirements;

x Compliance schedules (see Appendix B, Subsection 12.F) - Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit must be submitted no later than 14 days following each schedule date;

x Other noncompliance (see Appendix B, Subsection 12.G) - You must report all instances of noncompliance not reported in your monitoring report (pursuant to Part 7.1), compliance schedule report, or 24-hour report at the time monitoring reports are submitted; and

x Other information (see Appendix B, Subsection 12.H) – You must promptly submit facts or information if you become aware that you failed to submit relevant facts in your NOI, or that you submitted incorrect information in your NOI or in any report.

7.8 Recordkeeping.

You must retain copies of your SWPPP (inclu ding any modifications made during the term of this permit), additional documentation requirements pursuant to Part 5.5 (including documentation related to corrective actions ta ken pursuant to Part 4), all reports and certifications required by this permit, monitoring data, and records of all data used to complete the NOI to be covered by this permit, for a period of at least three years from the date that your coverage under this permit expires or is terminated.

7.9 Addresses for Reports.

7.9.1 EPA Addresses.

If you have obtained a waiver by the EPA Regional Office to submit information in paper form, paper copies of any reports or forms an d all other written correspondence concerning discharges in any state, Indian country land, terri tory covered under this permit and directed to the EPA, including individual permit applications, must be sent to the address of the appropriate EPA Regional Office listed below:

7.9.1.1 Region 1: Connecticut, Massachusetts, and New Hampshire, Rhode Island, Vermont.

U.S. EPA Region 1 Office of Ecosystem Protection NPDES Stormwater Program 5 Post Office Square, Suite 100 (OEP 06-1) Boston, MA 02109-3912

7.9.1.2 Region 2: New Jersey, New York , Puerto Rico, and Virgin Islands.

For Puerto Rico and the Virgin Islands

U.S. EPA Region 2 Caribbean Environmental Protection Division NPDES Stormwater Program Centro Europa Building 1492 Ponce de Leon Avenue, Suite 417 San Juan, PR 00907-4127

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For New Jersey and New York:

(Coverage not available under this permit.)

U.S. EPA Region 2 NPDES Stormwater Program 290 Broadway, 24 th Floor New York, NY 10007-1866

7.9.1.3 Region 3: Delaware, District of Columbia , Maryland, Pennsylvania, Virginia, West Virginia.

U.S. EPA Region 3 Office of NPDES Permits and Enforcement NPDES Permits Branch, Mailcode 3WP41 1650 Arch Street Philadelphia, PA 19103

7.9.1.4 Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee.

(Coverage not available under this permit.)

U.S. EPA Region 4 Water Protection Division NPDES Stormwater Program Atlanta Federal Center 61 Forsyth Street SW Atlanta, GA 30303-3104

7.9.1.5 Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin.

U.S. EPA Region 5 NPDES & Technical Support NPDES Stormwater Program 77 W. Jackson Blvd. Mail Code WN16J Chicago, IL 60604-3507

7.9.1.6 Region 6: Arkansas, Louisiana, Oklaho ma, Texas, and New Mexico (except see Region 9 for Navajo lands, and see Region 8 fo r Ute Mountain Reservation lands).

U.S. EPA Region 6 NPDES Stormwater Program 1445 Ross Avenue, Suite 1200 Dallas, TX 75202-2733

7.9.1.7 Region 7: Iowa, Kansas, Missouri, Nebraska.

U.S. EPA Region 7 NPDES Stormwater Program 901 N. 5th Street Kansas City, KS 66101

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7.9.1.8 Region 8: Colorado, Montana, North Da kota, South Dakota, Wyoming, Utah (except see Region 9 for Goshute Reservation and Nava jo Reservation lands), the Ute Mountain Reservation in New Mexico, and the Pine Ridge Reservation in Nebraska.

U.S. EPA Region 8 NPDES Stormwater Program 999 18 th Street, Suite 300 Denver, CO 80202-2466

7.9.1.9 Region 9: Arizona, California, Hawaii, Nevada, Guam, American Samoa, the Commonwealth of the Northern Mariana Islands, the Goshute Reservation in Utah and Nevada, the Navajo Reservation in Utah, Ne w Mexico, and Arizona, the Duck Valley Reservation in Idaho, Fort Mc Dermitt Reservation in Oregon.

U.S. EPA Region 9 NPDES Stormwater Program 75 Hawthorne Street San Francisco, CA 94105-3901

7.9.1.10 Region 10: Alaska, Idaho, Oregon (excep t see Region 9 for Fort McDermitt Reservation), Washington.

U.S. EPA Region 10 NPDES Stormwater Program 1200 6th Avenue (OW-130) Seattle, WA 98101-1128

7.9.2 State and Tribal Addresses.

See Part 9 (states and tribes) for the addresses of applicable states or tribes that require submission of informatio n to their agencies.

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# Disclaimer

The EPA Regions signed the Federal Register notice for the draft NPDES Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activity (MSGP) and we (EPA) have submitted it for publication in the Federal Register.
While we have taken steps to ensure the accuracy of this web version of the proposed MSGP, it is not the official version for purposes of public comment. The official version will be announced in a forthcoming Federal Register publication or on the Government Printing Office's web site. You may access the Federal Register at: http://www.gpoaccess .gov/fr/index.html . When using this site, note that “text” files may be incomplete because they do not include graphics. Instead, select “Adobe Portable Document File” (PDF) files.Proposed 2013 MSGP

Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart A – Sector A – Timber Products.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.A.1 Covered Stormwater Discharges. The requirements in Subpart A apply to stormw ater discharges associated with industrial activity from Timber Products facilities as identified by the SIC Codes specified under Sector A in Table D-1 of Appendix D of the permit. 8.A.2 Limitation on Coverage
8.A.2.1 Prohibition of Discharges. (See also Part 1.1.4) Not covered by this permit: stormwater discharges from areas where there may be contact with the chemical formulations sprayed to provide surface protection. Th ese discharges must be covered by a separate NPDES permit.

8.A.2.2 Authorized Non-Stormwater Discharges. (See also Part 1.1.3) Also authorized by this permit, provided the non-stormwater comp onent of the discharg e is in compliance with the requirements in Part 2.1.2 (Non-Numeric Effluent Limits): discharges from the spray down of lumber and wood product storage yards where no chemical additives are used in the spray-down waters and no chemicals are applied to the wood during storage.
8.A.3 Additional Technology-Based Effluent Limits.
8.A.3.1 Good Housekeeping. (See also Part 2.1.2.2) In areas where storage, loading and unloading, and material handling occur, perform good housekeeping to limit the discharge of wood debris, minimize the leachate generated from decaying wood materials, and minimize the generation of dust.
8.A.4 Additional SWPPP Requirements.
8.A.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitat ion or surface runoff: processing areas, treatment chemical storage areas, treated wood and residue storage areas, wet decking areas, dry decking areas, untreated wood and residue storage areas, and treatment equipment storage areas.

8.A.4.2 Inventory of Exposed Materials. (See also Part 5.2.3.2) Where such information exists, if your facility has used chlorophenolic, creosote, or chromium-copper-arsenic formulations for wood surface protection or preserving, document in your SWPPP the following: areas where contaminated soils, tr eatment equipment, an d stored materials still remain and the management practices employed to minimize the contact of these materials with stormwater runoff.

8.A.4.3 Description of Stormwater Management Controls. (See also Part 5.2.4) Document measures implemented to address the following activities and sources: log, lumber, and wood product storage areas; residue storage areas; loading and unloading areas; material handling areas; chemical stor age areas; and equipment and vehicle maintenance, storage, and repair areas. If your facility performs wood surface

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protection and preservation activities, address the specific control measures, including any BMPs, for these activities.
8.A.5 Additional Inspection Requirements. See also Part 3.1. If your facility performs wood surface protection and preservation activities, inspect processing areas, transport ar eas, and treated wood storage areas monthly to assess the usefulness of practices to minimize the deposit of treatment chemicals on unprotected soils and in areas that will come in contact with stormwater discharges. 8.A.6 Sector-Specific Benchmarks Table 8.A-1 identifies benchmarks that apply to the specific subsectors of Sector A. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.A-1

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration Subsector A1 . General Sawmills and Planing Mills (SIC 2421) Chemical Oxygen Demand ( COD ) 120.0 mg/L

Total Suspended Solids (TSS) 100 mg/L

Total Zinc (freshwater) 2

Total Zinc ( saltwater ) 1 Hardness Dependent

0.09 mg/L

Subsector A2 . Wood Preserving (SIC 2491) Total Arsenic 0.15 m g /L Total Copper (freshwater) 2 Total Copper

( saltwater ) 1 Hardness Dependent

0.0048 mg/L

Subsector A3 . Log Storage and Handling ( SIC 2411 ) Total Suspended Solids ( TSS ) 100 mg/L

Subsector A4 . Hardwood Dimension and Flooring Mills; Special Products Sawmills, not elsewhere classified; Millwork, Veneer, Plywood, and Structural Wood; Wood Pallets and Skids; Wood Containers, not elsewhere classified; Wood Buildings and Mobile Homes; Reconstituted Wood Products; and Wood Products Facilities not elsewhere classified (SIC 2426, 2429, 2431-2439 (except 2434), 2441, 2448, 2449, 2451, 2452, 2493, and 2499 ) Chemical Oxygen Demand (COD) 120.0 mg/L

Total Suspended Solids (TSS) 100.0 mg/L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

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Freshwater Hardness Range Copper (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.0038 0.04 25-49.99 mg/L 0.0056 0.05 50-74.99 mg/L 0.0090 0.08 75-99.99 mg/L 0.0123 0.11 100-124.99 mg/L 0.0156 0.13 125-149.99 mg/L 0.0189 0.16 150-174.99 mg/L 0.0221 0.18 175-199.99 mg/L 0.0253 0.20 200-224.99 mg/L 0.0285 0.23 225-249.99 mg/L 0.0316 0.25 250+ mg/L 0.0332 0.26

8.A.7 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.) Table 8.A-2 identifies effluent limits that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other waste streams that may be covered under this permit.

Table 8.A-2 1 Industrial Activity Discharges resulting from spray down or intentional wetting of logs at wet deck storage areas pH 6.0 - 9.0 s.u Debris (woody material

such as bark, twigs, branches, heartwood, or sapwood ) No discharge of debris that will not pass through a 2.54-cm (1-in.) diameter round openin g

1 Monitor annually.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart B – Sector B – Paper and Allied Products.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.B.1 Covered Stormwater Discharges

. The requirements in Subpart B apply to stormw ater discharges associ ated with industrial activity from Paper and Allied Products Manufacturing facilities, as identified by the SIC Codes specified under Sector B in Table D-1 of Appendix D of the permit. 8.B.2 Sector-Specific Benchmarks. Table 8.B-1 identifies benchmarks that apply to the specific subsectors of Sector B. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.B-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector B1 . Paperboard Mills (SIC Code 2631) Chemical Oxygen Demand (COD) 120 mg/L

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart C – Sector C – Chemical and Allied Products Manufacturing, and Refining.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.C.1 Covered Stormwater Discharges. The requirements in Subpart C apply to stormw ater discharges associated with industrial activity from Chemical and Allied Products Manufacturing, and Refining facilities, as identified by the SIC Codes specified under Sector C in Table D-1 of Appendix D of the permit. 8.C.2 Limitations on Coverage.
8.C.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) The following are not covered by this permit: non-stormwater discharges containing inks, paints, or substances (hazardous, nonhazardous, etc.) resulting from an onsite spill, including materials collected in drip pans; washwater from material handling and processing areas; and washwater from drum, tank, or container rinsing and cleaning.
8.C.3 Sector-Specific Benchmarks Table 8.C-1 identifies benchmarks that apply to the specific subsectors of Sector C. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

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Table 8.C-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector C1 . Agricultural Chemicals (SIC 2873-2879) Nitrate plus Nitrite Nitro g en 0.68 mg/L

Total Lead (freshwater) 2 Total Lead ( saltwater ) 1 Hardness Dependent 0.21 m g /L Total Iron 1.0 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Phosphorus 2.0 m g /L Subsector C2 . Industrial Inorganic Chemicals (SIC 2812-2819) Total Aluminum 0.75 m g / L Total Iron 1.0 m g /L Nitrate plus Nitrite Nitro g en 0.68 mg/L

Subsector C3 . Soaps, Detergents, Cosmetics, and Perfumes (SIC 2841-2844) Nitrate plus Nitrite Nitro g en 0.68 mg/L

Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Subsector C4 . Plastics, Synthetics, and Resins ( SIC 2821-2824 ) Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. . Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Lead (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.014 0.04
25-49.99 mg/L 0.023 0.05
50-74.99 mg/L 0.045 0.08
75-99.99 mg/L 0.069 0.11
100-124.99 mg/L 0.095 0.13
125-149.99 mg/L 0.122 0.16
150-174.99 mg/L 0.151 0.18
175-199.99 mg/L 0.182 0.20
200-224.99 mg/L 0.213 0.23
225-249.99 mg/L 0.246 0.25
250+ mg/L 0.262 0.26

8.C.4 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.) Table 8.C-2 identifies effluent limits that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

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Table 8.C-2 1 Industrial Activity Parameter Effluent Limit Runoff from phosphate fertilizer manufacturing facilities that comes into contact with any raw materials, finished product, by-products or waste products (SIC 2874) Total Phosphorus (as P) 105.0 m g /L, daily maximum 35 mg/L, 30-day av g

. Fluoride 75.0 mg/L, daily maximum 25.0 mg/L, 30-day avg.

1 Monitor annually.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart D – Sector D – Asphalt Paving and Ro ofing Materials and Lubricant Manufacturing.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.D.1 Covered Stormwater Discharges. The requirements in Subpart D apply to stormwater discharges associated with industrial activity from Asphalt Paving and Roofing Materials and Lubricant Manufacturing facilities, as identified by the SIC Codes specified under Sector D in Table D-1 of Appendix D of the permit. 8.D.2 Limitations on Coverage. The following stormwater discharges associated with industrial activity are not authorized by this permit (see also Part 1.1.4):

8.D.2.1 Discharges from petroleum refining faciliti es, including those that manufacture asphalt or asphalt products, that are subject to nationally established effluent limitation guidelines found in 40 CFR Part 419 (Petroleum Refining); or
8.D.2.2 Discharges from oil recycling facilities; or
8.D.2.3 Discharges associated with fats and oils rendering.
8.D.3 Sector-Specific Benchmarks Table 8.D-1 identifies benchmarks that apply to the specific subsectors of Sector D. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.D-1.

Subsector Parameter Benchmark Monitoring Concentration
Subsector D1 . Asphalt Paving and Roofing Materials (SIC 2951, 2952) Total Suspended Solids (TSS) 100 mg/L

8.D.4 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.)

Table 8.D-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

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Table 8.D-2 1 Industrial Activity Parameter Effluent Limit Discharges from asphalt emulsion facilities. Total Suspended Solids (TSS) 23.0 mg/L, daily maximum 15.0 mg/L, 30-day av g

. pH 6.0 - 9.0 s.u. Oil and Grease 15.0 mg/L, daily maximum 10 mg/L, 30-day av g

.
1 Monitor annually.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart E – Sector E – Glass, Clay, Ce ment, Concrete, and Gypsum Products.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.E.1 Covered Stormwater Discharges. The requirements in Subpart E apply to stormw ater discharges associated with industrial activity from Glass, Clay, Cement, Concrete, and Gypsum Products facilities, as identified by the SIC Codes specified under Sector E in Table D-1 of Appendix D of the permit. 8.E.2 Additional Technology-Based Effluent Limits.
8.E.2.1 Good Housekeeping Measures. (See also Part 2.1.2.2) With good housekeeping, prevent or minimize the discharge of spilled cement, aggregate (including sand or gravel), kiln dust, fly ash, settled dust, or other significant material in stormwater from paved portions of the site that are exposed to stormwater. Sweep or vacuum at regular intervals or use other equivalent measures to minimize the presence of these materials. Indicate in your SWPPP the frequency of sweeping, vacuuming or other equivalent measures. Determine the frequency based on the amount of industrial activity occurring in the area and the frequency of precipitation, but it must be performed at least once a week if cement, aggregate, kiln dust, fly ash, or settled dust are being handled or processed. You must also prevent the exposure of fine granular solids (cement, fly ash, kiln dust, etc.) to stor mwater, where practicable, by storing these materials in enclosed silos, hoppers, or buildings, or under other covering.
8.E.3 Additional SWPPP Requirements.
8.E.3.1 Drainage Area Site Map . (See also Part 5.2.2) Document in the SWPPP the locations of the following, as applicable: bag house or other dust control device; recycle/sedimentation pond, clarifier, or other device used for the treatment of process wastewater; and the areas that drain to the treatment device.

8.E.3.2 Discharge Testing. (See also Part 5.2.3.4) For facilities producing ready-mix concrete, concrete block, brick, or similar products, include in the non-stormwater discharge testing a description of measures that ensure that process wastewaters resulting from washing trucks, mixers, transport buckets, fo rms, or other equipment are discharged in accordance with NPDES requirements or are recycled.
8.E.4 Sector-Specific Benchmarks. Table 8.E-1 identifies benchmarks that apply to the specific subsectors of Sector E. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

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Table 8.E-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector E1 . Clay Product Manufacturers (SIC 3251-3259, 3261-3269) Total Aluminum 0.75 mg/L

Subsector E2 . Concrete and Gypsum Product Manufacturers (SIC 3271-3275) Total Suspended Solids (TSS) 100 mg/L

Total Iron 1.0 mg/L

8.E.5 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.)

Table 8.E-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these limits is to be determin ed based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

Table 8.E-2 1 Industrial Activity Parameter Effluent Limit Discharges from material storage piles at cement manufacturing facilities Total Suspended Solids (TSS) 50 mg/L, daily maximum pH 6.0 - 9.0 s.u.

1 Monitor annually.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart F – Sector F – Primary Metals.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.F.1 Covered Stormwater Discharges. The requirements in Subpart F apply to stormw ater discharges associated with industrial activity from Primary Metals facilities, as identified by the SIC Codes specified under Sector F in Table D-1 of Appendix D of the permit. 8.F.2 Additional Technology-Based Effluent Limits
8.F.2.1 Good Housekeeping Measures. (See also Part 2.1.2.2) As part of your good housekeeping program, include a cleaning and maintenance program for all impervious areas of the facility where particulate matter, dust, or debris may accumulate, especially areas where material loading and unloading, storage, handling, and processing occur; and, wher e practicable, the paving of areas where vehicle traffic or material storage occur but where vegetative or other stabilization methods are not practicable (institute a sweeping or vacuuming program in these areas too). For unstabilized areas where sweeping or vacuuming is not practicable, use stormwater management devices such as sedime nt traps, vegetative buffer strips, filter fabric fence, sediment filtering boom, gravel outlet protection, or other equivalent measures that effectively trap or remove sediment.
8.F.3 Additional SWPPP Requirements.
8.F.3.1 Drainage Area Site Map. (See also Part 5.2.2) Identify in the SWPPP where any of the following activities may be exposed to precipitation or surface runoff: storage or disposal of wastes such as spent solvents and baths, sand, slag and dross; liquid storage tanks and drums; processing areas including pollution control equipment (e.g., baghouses); and storage areas of raw material such as coal, coke, scrap, sand, fluxes, refractories, or metal in any form. In addition, indicate where an accumulation of significant amounts of particulate matter could occur from such sources as furnace or oven emissions, losses from coal and coke handling operations, etc., and could result in a discharge of pollutants to waters of the United States.

8.F.3.2 Inventory of Exposed Material. (See also Part 5.2.3) Includ e in the inventory of materials handled at the site that potentially may be exposed to precipitation or runoff, areas where deposition of particulate matter from process air emissions or losses during material-handling activities are possible
8.F.4 Additional Inspection Requirements. (See also Part 3.1) As part of conducting your routine facility inspections at least quarterly (Part 3.1), address all potential sources of pollutants, including (if applicable) air pollution control equipment (e.g., baghouses, electrostatic precipitators, scrubbers, and cyclones), for any signs of degradation (e.g., leaks, corrosion, or improper operation) that could limit their efficiency and lead to excessive emissions. Consider monitoring air flow at inlets and outlets (or use equivalent measures) to check for leaks (e.g., particulate deposition) or blockage in ducts. Also inspect all process and material handling equipment (e.g., conveyors, cranes, and vehicles) for leaks, drips, or the potential loss of material; and material storage areas

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(e.g., piles, bins, or hoppers for storing coke, coal, scrap, or slag, as well as chemicals stored in tanks and drums) for signs of materi al losses due to wind or stormwater runoff. 8.F.5 Sector-Specific Benchmarks. Table 8.F-1 identifies benchmarks that apply to the specific subsectors of Sector F. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.F-1.

Subsector (You may be subject to requirements for more than one sector/subsector ) Parameter Benchmark Monitoring Concentration

Subsector F1 . Steel Works, Blast Furnaces, and Rolling and Finishing Mills (SIC 3312-3317) Total Aluminum 0.75 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Subsector F2 . Iron and Steel Foundries (SIC 3321-3325) Total Aluminum 0.75 m g /L Total Suspended Solids ( TSS ) 100 m g /L Total Copper (freshwater) 2 Total Copper ( saltwater ) 1 Hardness Dependent 0.0048 m g /L Total Iron 1.0 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Subsector F3 . Rolling, Drawing, and Extruding of Nonferrous Metals (SIC 3351-3357) Total Copper (freshwater) 2 Total Copper ( saltwater ) 1 Hardness Dependent 0.0048 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Subsector F4 . Nonferrous Foundries (SIC 3363-3369) Total Copper (freshwater) 2 Total Copper ( saltwater ) 1 Hardness Dependent 0.0048 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Copper (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.0038 0.04 25-49.99 mg/L 0.0056 0.05 50-74.99 mg/L 0.0090 0.08 75-99.99 mg/L 0.0123 0.11 100-124.99 mg/L 0.0156 0.13 125-149.99 mg/L 0.0189 0.16 150-174.99 mg/L 0.0221 0.18 175-199.99 mg/L 0.0253 0.20 200-224.99 mg/L 0.0285 0.23 225-249.99 mg/L 0.0316 0.25 250+ mg/L 0.0332 0.26

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart G – Sector G – Metal Mining.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.G.1 Covered Stormwater Discharges. The requirements in Subpart G apply to stormwater discharges associated with industrial activity from Metal Mining facilities, including mines abandoned on Federal lands, as identified by the SIC Codes specified under Sector G in Table D-1 of Appendix D. Coverage is required for metal mining facilities that discharge stormwater contaminated by contact with, or that has come into contact with, any overburden, raw material, intermediate product, finished product, byproduct, or waste product located on the site of the operation. 8.G.1.1 Covered Discharges from Inactive Facilities. All stormwater discharges.
8.G.1.2 Covered Discharges from Active and Temporarily Inactive Facilities. Only the stormwater discharges from the following areas are covered:

x Waste rock and overburden piles if comp osed entirely of stormwater and not combining with mine drainage;

x Topsoil piles;

x Offsite haul and access roads;

x Onsite haul and access roads constructe d of waste rock, overburden or spent ore if composed entirely of stormwater and not combining with mine drainage;

x Onsite haul and access roads not constructed of waste rock, overburden or spent ore except if mine draina ge is used for dust control;

x Runoff from tailings dams or dikes when not constructed of waste rock or tailings and no process fluids are present;

x Runoff from tailings dams or dikes when constructed of waste rock or tailings and no process fluids are present, if co mposed entirely of stormwater and not combining with mine drainage;

x Concentration building if no contact with material piles;

x Mill site if no contact with material piles;

x Office or administrative building and housing if mixed with stormwater from industrial area;

x Chemical storage area;

x Docking facility if no excessive contact with waste product that would otherwise constitute mine drainage;

x Explosive storage;

x Fuel storage;

x Vehicle and equipment maintenance area and building;

x Parking areas (if necessary);

x Power plant;

x Truck wash areas if no excessive contact with waste product that would otherwise constitute mine drainage;

x Unreclaimed, disturbed areas ou tside of active mining area;

x Reclaimed areas released from reclamation requirements prior to December 17, 1990;

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x Partially or inadequately reclaimed areas or areas not released from reclamation requirements.

8.G.1.3 Covered Discharges from Exploration and Construction of Metal Mining and/or Ore Dressing Facilities. All stormwater discharges.
8.G.1.4 Covered Discharges from Facilities Underg oing Reclamation. All stormwater discharges.
8.G.2 Limitations on Coverage.
8.G.2.1 Prohibition of Stormwater Discharges. Stormwater discharges not authorized by this permit: discharges from active metal mining facilities that are subject to effluent limitation guidelines for the Ore Mining and Dressing Point Source Category (40 CFR Part 440).
NOTE: Stormwater runoff from these sources are subject to 40 CFR Part 440 if they are mixed with other discharges subject to Part 440. In this case, they are not eligible for coverage under this permit. Discharges from overburden/waste rock and overburden/waste rock-related areas are not subject to 40 CFR Part 440 unless they: (1) drain naturally (or are intentionally diverted) to a point source; and (2) combine with ''mine drainage'' that is otherwise regulated under the Part 440 regulations. For such sources, coverage under this permit would be available if the discharge composed entirely of stormwater does not combine with other sources of mine drainage that are not subject to 40 CFR Part 440, and meets the other eligibility criteria contained in Part 1.2 of the permit. Permit applicants bear the initial responsibility for determining if they are eligible for coverage under this permit, or must seek coverage under another NPDES permit. EPA recommends that permit applicants contact the relevant NPDES permit issuance authority for assistance to determine the nature and scope of the ''active mining area'' on a mine-by-mine basis, as well as to determine the appropriate permitting mechanism for authorizing such discharges.

8.G.2.2 Prohibition of Non-Stormwater Discharges . Not authorized by this permit: adit drainage, and contaminated springs or seeps discharging from waste rock dumps that do not directly result from precipitation events (s ee also the standard Limitations on Coverage in Part 1.1.4).

8.G.3 Definitions. The following definitions are not intended to supersede the definitions of active and inactive mining facilities established by 40 CFR 122.26(b)(14)(iii).

8.G.3.1 Mining operation - Consists of the active and temporarily inactive phases, and the reclamation phase, but excludes the exploration and construction phases.

8.G.3.2 Exploration phase - Entails exploration and land disturbance activities to determine the viability of a site. The exploration phase is not considered part of “mining operations.”

8.G.3.3 Construction phase - Includes the building of site access roads and removal of overburden and waste rock to expose mineable minerals. The construction phase is not considered part of “mining operations.”

8.G.3.4 Active phase - Activities including the extraction, removal or recovery of metal ore. For surface mines, this definition does not incl ude any land where grading has returned the earth to a desired contour and reclamation has begun. This definition is derived from

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the definition of “active mining area” found at 40 CFR 440.132(a). The active phase is considered part of “mining operations.”

8.G.3.5 Reclamation phase - Activities undertaken, in complia nce with applicable mined land reclamation requirements, following the cess ation of the “active phase”, intended to return the land to an appropriate post-mining land use in order to meet applicable Federal and State reclamation requirements. The reclamation phase is considered part of "mining operations."

8.G.3.6 Active metal mining facility - A place where work or other activity related to the extraction, removal, or recovery of metal ore is being conducted. For surface mines, this definition does not include any land where grading has returned the earth to a desired contour and reclamation has begun. This definition is derived from the definition of “active mining ar ea” found at 40 CFR 440.132(a).

8.G.3.7 Inactive metal mining facility - A site or portion of a site where metal mining and/or milling occurred in the past but is not an active facility as defined above, and where the inactive portion is not covered by an active mining permit issued by the applicable State or Federal agency. An inactive metal mining facility has an identifiable owner / operator. Sites where mining claims are being maintained prior to disturbances associated with the extraction, beneficiation, or processing of mined materials and sites where minimal activities are undertaken for the sole purpose of maintaining a mining claim are not considered either active or inactive mining facilities and do not require an NPDES industrial stormwater permit.

8.G.3.8 Temporarily inactive metal mining facility - A site or portion of a site where metal mining and/or milling occurred in the past but currently are not being actively undertaken, and the facility is covered by an active mining permit issued by the applicable State or Federal agency.

8.G.3.9 Final Stabilization - A site or portion of a site is “finally stabilized” when it has implemented all applicable Federal and State reclamation requirements.
8.G.4 Technology-Based Efflue nt Limits for Clearing, Grading, and Excavation Activities. Clearing, grading, and excavation activities being conducted as part of the exploration and construction phase of mining activities are covered under this permit. During clearing, grading, and excavation activities you must comply with all applicable effluent limits in Part 2 of this permit, and you must also comply with the following effluent limits which are from the 2012 version of EPA’s Construction General Permit (CGP). Contained in Part 8.G.4 are the basic requirements of EPA’s CGP, however, you should consult EPA’s CGP to ensure full compliance is achieved. 8.G.4.1 Requirements Regarding Erosion And Sediment Control. .
8.G.4.1.1 Installation of Stormwater Controls (See Part 2.1.1.3 of EPA’s CGP)

x By the time construction commences, stormwater controls to treat initial disturbance must be installed and made operational.

x Controls must be installed along perimeter areas of site that will receive stormwater flow.

x Remaining controls must be installed as soon as conditions allow

8.G.4.1.2 Maintenance of Stormwater Controls (See Part 2.1.1.4 of EPA’s CGP)

x At any time, if a stormwater control needs repair or replacement to continue operating effectively;

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o Initiate work to fix the problem immediately

o Complete work by end of the next work day

x If a stormwater control must be replaced or significantly repaired, work must be completed within 7 days, unless infeasible

8.G.4.1.3 Natural Buffers (See Part 2.1.2.1 and Appendix G of EPA’s CGP). If earth disturbances will occur within 50 feet of a water of the U.S., additional protections apply. You must comply with 1 of 3 compliance alternatives:

1. Provide a 50-foot undisturbed natural buffer between construction disturbances and the water of the U.S.; or 2. Provide an undisturbed natural buffer that is less than 50 feet supplemented by additional erosio n and sediment controls, which in combination, achieve a sediment load reduction that is equivalent to a 50-foot buffer; or 3. If it is infeasible to provide an undisturbed natural buffer of any size, implement erosion and sediment co ntrols that achieve a sediment load reduction that is equi valent to a 50-foot buffer.

There are exceptions when buff er requirements don’t apply:

1. There is no stormwater discharge fr om construction disturbances to the water of the U.S.; 2. The natural buffer has already been eliminated by preexisting development disturbances; or 3. The disturbance is for the construction of a water-dependent structure (pier, boat ramp) or construction approved under a CWA section 404 permit.

8.G.4.1.4 Sediment Discharge Controls (See Parts 2.1.2.2 – 2.1.3.3 of EPA’s CGP)

Perimeter controls:

x Install sediment controls along those perimeter areas of your site that will receive stormwater; and

x Remove sediment before it has accumulated to one-half of the above-ground height of any perimeter control.

Sediment track-out:

x Restrict vehicle use to designated exit points;

x Use appropriate stabilization techniques; and

x Remove tracked-out sediment by end of the work day.

Soil or sediment stockpiles:

x Locate the piles outside of any natural buffers established under Part 8.G.4.1.3;

x Protect from contact with stormwater runoff using temporary barriers; and

x Provide cover or appropriate temporary stabilization, where practicable.

Storm drain inlets:

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x Install inlet protection measures (at sewer inlets that you can access) that remove sediment prior to discharge into storm drain

x Can be removed in the event of flood conditions or to prevent erosion; and

x Clean, or remove and replace, the protection measures as sediment accumulates, the filter becomes clogged, and/or performance is compromised

Sediment basins

x Provide storage for either (1) the 2-year, 24-hour storm, or (2) 3,600 cubic feet per acre drained; and

x Utilize outlet structures that withdraw water from surface, unless infeasible.

x Prevent erosion of (1) the sediment basin using stabilization controls (e.g., erosion control blankets), and (2) the inlet and outlet using erosion controls and velocity dissipation devices; and

x Locate sediment basins outside any natural buffers established under Part 8.G.4.1.3.

Other related requirements:

x Minimize amount of soil exposed at any one time during construction

x Minimize steep sl ope disturbances

x Minimize soil compaction

x Direct stormwater to the site’s vegetated areas unless infeasible

8.G.4.1.5 Restrictions on Use of Treatmen t Chemicals (See Part 2.1.3.3 of EPA’s CGP). If you will use treatment chemicals at your site, you are subject to the following minimum requirements:

x Use conventional E&S controls prior to and after application of chemical;

x Select chemicals suited to soil type, and expected turbidity, pH, flow rate;

x Minimize discharge risk from stored chemicals;

x Apply in accordance with state/lo cal requirements, good engineering practices, and dosage recommendations of chemical supplier; and

x Ensure proper training.

The use of cationic treatment chemic als is not allowed under the MSGP unless EPA specifically authorizes its use:

x You will need to contact the applicable EPA Regional Office if you intend to use cationic treatment chemicals at your site to determine what information EPA requires to evaluate your request; and

x Use of cationic chemicals will likely be subject to additional requirements to ensure protecti on of water quality standards.

8.G.4.1.6 Site Stabilization (See Part 2.2 of EPA’s CGP)

When to initiate stabilization:

x By no later than the end of the next work day after construction work in an area has stopped permanently or temporarily

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When stabilization must be completed:

x If using vegetative measures, by no later than 14 days after initiating stabilization, the operator must:

o Seed or plant the area, and provide temporary cover to protect planted area; and

o Once established, vegetation must cover at least 70% of stabilized area based on de nsity of native vegetation.

x If using non-vegetative stabilization, by no later than 14 days after initiating stabilization, the operator must:

o Install or apply all non-vegetative measures; and

o Cover all areas of exposed soil.

Exceptions:

x Arid, semi-arid (if construction occurs during seasonally dry period), or drought-stricken areas:

o Within 14 days of stopping constr uction work in an area, install any necessary non-vegetative stabilization measures;

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

x Sites affected by severe storm events or other unforeseen circumstances:

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

8.G.4.2 Pollution Prevention Requirem ents (See Part 2.3 of EPA’s CGP)

8.G.4.2.1 Prohibited No n-Stormwater Discharges:

x Wastewater from washout of concrete, unless managed by an appropriate control;

x Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials, unless managed by an appropriate control;

x Fuels, oils, or other pollutants used for O&M of vehicles or equipment;

x Soaps or solvents used in vehi cle or equipment washing; and

x Toxic or hazardous substances from a spill or other release

8.G.4.2.2 Design and Location Requirements:

x Use effective means of preventing discharge from pollution sources:

o Minimize exposure; or

o Use secondary containment or equivalent measures; or

o Prov ide s pill kits.

x Use leak-proof containers for all chemicals:

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o Locate away from surface waters, storm sewer inlets, and drainageways; and

o Clean up spills immediately – do not clean by hosing area down

8.G.4.3 Water-Quality Requirements Stricter requirements apply if your site will discharge to an impaired water or a water that is identified by your state, tribe, or EPA as a Tier 2 or Tier 2.5 for antidegradation purposes:

x More rapid stabilization of exposed areas:

o Complete initial stabilization activities within 7 days of stopping construction work.

x More frequent site inspections:

o Once every 7 days and within 24 hours of a storm event of 0.25 inches or greater.

8.G.4.4 Inspection Requirements (See Part 4.1 of EPA’s CGP)

8.G.4.4.1 Inspection Frequency

x At least once every 7 calendar days, or

x Once every 14 calendar days and within 24 hours of a storm event of 0.25 inches or greater. Note:

o Inspections only required during working hours;

o Inspections not required during unsafe conditions; and

o If you choose to inspect once ever y 14 days, you must have a method for measuring rainfall amount on site (either rain gauge or representative weather station)

8.G.4.4.2 Reductions in Inspection Frequency

x Stabilized areas: You may reduce the frequency of inspections to once per month in any area of your site where the stabilizat ion as occurred pursuant to Part 8.G.4.1.6.

x Arid, semi-arid, and drought stricken area s: if construction is occurring during the seasonally dry period or during a period in which drought is predicted to occur, you may reduce inspections to once per month and within 24 hours of a 0.25 inch storm event.

x Frozen conditions: You may temporarily suspend or reduce inspections (to once per month) until thawing conditions occur if frozen conditions are continuous and disturbed areas have been stabilized.

8.G.4.4.3 Areas to be Inspected: You must at a minimum inspect the following areas:

x All disturbed areas;

x All stormwater controls and pollution prevention measures;

x All locations where stabilization measures have been implemented;

x Material, waste, borrow, or equipm ent storage and maintenance areas;

x All areas where stormwater flows; and

x All points of discharge.

8.G.4.4.4 What to Check for During Inspections At a minimum you must check:

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x Whether all stormwater controls are installed, operational, and working as intended;

x If any new or modified stormwater controls are needed;

x Conditions that could lead to a spill or leak; and

x Visual signs of erosion/sedimentation at points of discharge.

If a discharge is occurring:

x The quality and characteristics of the discharge; and

x Whether controls are operating effectively

8.G.4.4.5 Inspection Report Within 24 hours of an inspection, complete a report that includes:

x Inspection date;

x Name and title of inspector(s);

x Summary of inspec tion findings ;

x Rainfall amount that triggered the inspection (if applicable);

x If it was unsafe to inspect a portion of the site, include documentation of the reason and the location(s;)

x Each inspection report must be signed; and

x Must keep a current copy of all reports at the site or at an easily accessible location.

8.G.5 Additional Technology-Based Effluent Limits.
8.G.5.1 Employee Training. (See also Part 2.1.2.8) Conduct employee training at least annually at active and temporarily inactive sites.

8.G.5.2 Stormwater Controls. Apart from the control measures you implement to meet your Part 2 effluent limits, where necessary to mini mize pollutant discharges, implement the following control measures at your site. The potential pollutants identified in Part 8.G.6.3 shall determine the priority and appropriat eness of the control measures selected.

8.G.5.2.1 Stormwater Diversions : Divert stormwater away from potential pollutant sources where practicable. The following are some options: interceptor or diversion controls (e.g., dikes, swales, curbs, or berms); pipe slope drains; subsurface drains; conveyance systems (e.g., channels or gutters, open-top box culverts, and waterbars; rolling dips and road sloping; roadway surface water deflector and culverts); or their equivalents.

8.G.5.2.2 Capping : When capping is necessary to mi nimize pollutant discharges in stormwater, identify the source being capped and the material used to construct the cap.

8.G.5.2.3 Treatment : If treatment of stormwater (e.g., chemical or physical systems, oil and water separators, artificial wetlands) is necessary to protect water quality, describe the type and location of treatment used. Passive and/or active treatment of stormwater runoff is encouraged where practicable. Treated runoff may be discharged as a stormwat er source regulated under this permit provided the discharge is not combined with discharges subject to effluent limitation guidelines for the Ore Mining and Dressing Point Source Category (40 CFR Part 440).

8.G.5.3 Discharge Testing. (See also Part 5.2.3.4) Test or evaluate all outfalls covered under this permit for the presence of specific mining-r elated non-stormwater discharges such as

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seeps or adit discharges, or discharges subject to effluent limitations guidelines (e.g., 40 CFR Part 440), such as mine drainage or proc ess water. Alternatively (if applicable), you may keep a certification with your SWPPP consistent with Part 8.G.6.6.
8.G.6 Additional SWPPP Requirements.
8.G.6.1 Nature of Industrial Activities . (See also Part 5.2.2) Briefly document in your SWPPP the mining and associated activities that can potentially affect the stormwater discharges covered by this permit, including a general description of the location of the site relative to major transportation routes and communities

.
8.G.6.2 Site Map . (See also Part 5.2.2) Document in yo ur SWPPP the locations of the following (as appropriate): mining or milling site boundaries; access and haul roads; outline of the drainage areas of each stormwater outfall within the facility with indications of the types of discharges from the drainage areas; location(s) of all permitted discharges covered under an individual NPDES permit, outdoor equipment storage, fueling, and maintenance areas; materials handling areas; outdoor manufacturing, outdoor storage, and material disposal areas; outd oor chemicals and explosives storage areas; overburden, materials, soils, or waste storage areas; location of mine drainage (where water leaves mine) or other process water; tailings piles and ponds (including proposed ones); heap leach pads; off-site points of discharge for mine drainage and process water; surface waters; boundary of tributary areas that are subject to effluent limitations guidelines; and location(s) of reclaimed areas.

8.G.6.3 Potential Pollutant Sources. (See also Part 5.2.3) For each area of the mine or mill site where stormwater discharges associated with industrial activities occur, identify the types of pollutants (e.g., heavy metals, sediment) likely to be present in significant amounts. Consider these factors: the mineralo gy of the ore and waste rock (e.g., acid forming); toxicity and quantity of chem icals used, produced, or discharged; the likelihood of contact with stormwater; vegetation of site (if any); and history of significant leaks or spills of toxic or hazardous pollutants. Also include a summary of any existing ore or waste rock or overburden characterization data and test results for potential generation of acid rock. If any new data is acquired due to changes in ore type being mined, update your SWPPP with this information.

8.G.6.4 Documentation of Control Measures. Document all control measures that you implement consistent with Part 8.G.5.2. If control measures are implemented or planned but are not listed in Part 8.G.5.2 (e.g., substituting a less toxic chemical for a more toxic one), include descriptions of them in your SWPPP.

8.G.6.5 Employee Training. All employee training(s) must be documented in the SWPPP.

8.G.6.6 Certification of Permit Coverage for Commingled Non-Stormwater Discharges: If you are able, consistent with Part 8.G.5.3 above, to certify that a particular discharge composed of commingled stormwater and non-stormwater is covered under a separate NPDES permit, and that permit subjects the non-stormwater portion to effluent limitations prior to any commingling, retain such certification with your SWPPP. This certification must identify the non-stormwater discharges, the applicable NPDES permit(s), the effluent limitations placed on the non-stormwater discharge by the permit(s), and the points at which the limitations are applied.
8.G.7 Additional Inspection Requirements. (See also Part 3.1 and 8.G.4.4.) Except for areas of the site subject to clearing, grading, and/or excavation activities conducted as part of the exploration and construction phase,

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which are subject to Part 8.G.4.2.1, inspect sites at least quarterly unless adverse weather conditions make the site inaccessible. Sites which discharge to waters designated as Tier 2 or 2.5 or waters which are impaired for sediment or nitrogen must be inspected monthly, unless subject to 8.G.4.3. See Part 8.G.8.4 for inspection requirements for inactive and unstaffed sites. 8.G.8 Monitoring and Reporting Requirement s. (See also Part 6 of the permit.) Note: There are no Part 8.G.8 monitoring and reporting requirements for inactive and unstaffed sites.

8.G.8.1 Benchmark Monitoring for Active Copper Ore Mining and Dressing Facilities. Table 8.G-1 identifies benchmarks that apply to active copper ore mining and dr essing facilities. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.G-1

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector G1 . Active Copper Ore Mining and Dressing Facilities (SIC 1021) Total Suspended Solids (TSS) 100 mg/L

Nitrate plus Nitrite Nitro g en 0.68 mg/L

Chemical Oxygen

Demand ( COD ) 120 mg/L

8.G.8.2 Benchmark Monitoring Requirements for Discharges From Waste Rock and Overburden Piles at Active Metal Mining Facilities. For discharges from wa ste rock and overburden piles, perform benchmark monitoring once in the first year for the parameters listed in Table 8.G-2, and twice annually in all subsequent years of coverage under this permit for any parameters for which the benchm ark has been exceeded. You are also required to conduct analytic monitoring for the parameters listed in Table 8.G-3 in accordance with the requirements in Part 8.G. 6.3. The Director may also notify you that you must perform additional monitoring to accurately characterize the quality and quantity of pollutants discharged from your waste rock and overburden piles.

Table 8.G-2.

Subsector (Discharges may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector G2 . Iron Ores; Copper Ores; Lead and Zinc Ores; Gold and Silver Ores; Ferroalloy Ores, Except Vanadium; and Miscellaneous Metal Ores (SIC Codes 1011, 1021, 1031, 1041, 1044, 1061, 1081, 1094, 1099) (Note: when analyzing hardness for a suite of metals, it is more cost effective Total Suspended Solids (TSS) 100 mg/L Turbidity 50 NTU pH 6.0-9.0 s.u. Hardness (as CaCO 3 ; calc. from Ca, Mg) 2 no benchmark value

Total Antimony 0.64 m g /L

Total Arsenic 0.15 m g / L Total Beryllium 0.13 mg/L

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Table 8.G-2.

Subsector (Discharges may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

to add analysis of calcium and magnesium, and have hardness calculated than to require hardness analysis separately) Total Cadmium (freshwater) 2 Total Cadmium ( saltwater ) 1 Hardness Dependent 0.04 m g /L Total Copper (freshwater) 2 Total Copper ( saltwater ) 1 Hardness Dependent 0.0048 m g /L Total Iron 1.0 m g /L Total Lead (freshwater) 2 Total Lead ( saltwater ) 1 Hardness Dependent 0.21 m g /L Total Mercury 0.0014 m g /L Total Nickel (freshwater) 2 Total Nickel ( saltwater ) 1 Hardness Dependent 0.074 m g /L Total Selenium 0.005 m g /L Total Silver (freshwater) 2 Total Silver ( saltwater ) 1 Hardness Dependent 0.0019 m g /L Total Zinc (freshwater) 2 Total Zinc (saltwater) 1 Hardness Dependent 0.09 mg/L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Cadmium (mg/L) Copper (mg/L) Lead (mg/L) Nickel (mg/L) Silver (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.0005 0.0038 0.014 0.15 0.0007 0.04 25-49.99 mg/L 0.0008 0.0056 0.023 0.20 0.0007 0.05 50-74.99 mg/L 0.0013 0.0090 0.045 0.32 0.0017 0.08 75-99.99 mg/L 0.0018 0.0123 0.069 0.42 0.0030 0.11 100-124.99 mg/L 0.0023 0.0156 0.095 0.52 0.0046 0.13 125-149.99 mg/L 0.0029 0.0189 0.122 0.61 0.0065 0.16 150-174.99 mg/L 0.0034 0.0221 0.151 0.71 0.0087 0.18 175-199.99 mg/L 0.0039 0.0253 0.182 0.80 0.0112 0.20 200-224.99 mg/L 0.0045 0.0285 0.213 0.89 0.0138 0.23 225-249.99 mg/L 0.0050 0.0316 0.246 0.98 0.0168 0.25 250+ mg/L 0.0053 0.0332 0.262 1.02 0.0183 0.26

8.G.8.3 Additional Analytic Monitoring Requir ements for Discharges From Waste Rock and Overburden Piles at Active Metal Mining Facilities. In addition to the monitoring required in Part 8.G.8.2 for discharges from waste rock and overburden piles, you must also conduct monitoring for additional parameters based on the type of ore you mine at your site. Where a parameter in Table 8.G-3 is the same as a pollutant you are required to monitor for in Table 8.G-2 (i.e., for all of the metals), you must use the corresponding benchmark in Table 8.G-2 and you may use any monitoring results conducted for Part 8.G.8.2 to satisfy the monitoring requirement for that parameter for Part 8.G.6.3. For radium and uranium, wh ich do not have corresponding benchmarks

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in Table 8.G-2, there are no applicable be nchmarks. The frequency and schedule for monitoring for these additional parameters is the same as that specified in Part 6.2.1.2.

Table 8.G-3. Additional Monitoring Require ments for Discharges from Waste Rock and Overburden Piles Supplemental Requirements

Type of Ore Mined Pollutants of Concern Total Suspended Solids ( TSS ) pH Metals, Total

Tungsten Ore X X Arsenic, Cadmium (H), Copper ( H ) , Lead ( H ) , Zinc ( H ) Nickel Ore X X Arsenic, Cadmium (H), Copper ( H ) , Lead ( H ) , Zinc ( H ) Aluminum Ore X X Iron Mercury Ore X X Nickel ( H ) Iron Ore X X Iron ( Dissolved ) Platinum Ore Cadmium (H), Copper (H), Mercury, Lead ( H ) , Zinc ( H ) Titanium Ore X X Iron, Nickel ( H ) , Zinc ( H ) Vanadium Ore X X Arsenic, Cadmium (H), Copper ( H ) , Lead ( H ) , Zinc ( H ) Molybdenum X X Arsenic, Cadmium (H), Copper ( H ) , Lead ( H ) , Mercury, Zinc ( H ) Uranium, Radium, and Vanadium Ore X X Chemical Oxygen Demand, Arsenic, Radium (Dissolved and Total ) , Uranium, Zinc ( H ) Note: An “X” indicated for TSS and/or pH means that you are required to monitor for those parameters. (H) indicates that hardness must also be measured when this pollutant is measured.

8.G.8.4 Inactive and Unstaffed Sites – Conditio nal Exemption from No Exposure Requirements for Quarterly Visual Assessments and Routine Facility Inspections. As a Sector G facility, if you are seeking to exercise a waiver from the quarterly visual assessment and routine facility inspection requirements for inactive and unstaffed sites (including temporarily inactive sites), you are conditionally exempt from the requirement to certify that “there are no industrial materials or activities exposed to stormwater” in Parts 3.1.1 and 3.2.3. This exemption is conditioned on the following:

x If circumstances change and your facility becomes active and/or staffed, this exception no longer applies and you must immediately begin complying with the quarterly visual assessment requirements; and

x EPA retains the authority to revoke this exemption and/or the monitoring waiver where it is determined that the discharge causes, has a reasonable potential to cause, or contributes to an instream excursion above an applicable water quality standard, including designated uses. Subject to the two conditions above, if your facility is inactive and unstaffed, you are waived from the requirement to conduct quarterly visual assessments and routine facility inspections. You must still do an annual site inspection in accordance with Part 3.1. . You are encouraged to inspect your site more frequently where you have reason

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to believe that severe weather or natural disasters may have damaged control measures or increased discharges.

Table 8.G-4. Applicability of the Multi-Sector Gene ral Permit to Stormwater Runoff From Active Minin g and Dressin g Sites, Temporarily Inactive Sites, and Sites Under g oin g Reclamation Dischar g e/Source of Dischar g e Note/Comment Piles Waste rock/overburden If composed entirely of stormwater and not combining with mine drainage. See note below. Topsoil -- Roads constructed of waste rock or spent ore Onsite haul roads If composed entirely of stormwater and not combining with mine drainage. See note below. Offsite haul and access roads -- Roads not constructed of waste rock or spent ore Onsite haul roads Except if mine draina g e is used for dust control Offsite haul and access roads -- Millin g /concentratin g Runoff from tailings dams and dikes when constructed of waste rock/tailings Except if process fluids are present and only if composed entirely of stormwater and not combining with mine drainage. See Note below. Runoff from tailings dams/dikes when not constructed of waste rock and tailin g s Except if process fluids are present

Concentration building If stormwater only and no contact with piles Mill site If stormwater only and no contact with piles Ancillary areas Office and administrative building and housing If mixed with stormwater from the industrial

area Chemical stora g e area -- Docking facility Except if excessive contact with waste product that would otherwise constitute mine draina g e Explosive stora g e -- Fuel stora g e ( oil tanks/coal piles ) -- Vehicle and equipment maintenance area/buildin g --
Parking areas But coverage unnecessary if only employee and visitor-type parkin g Power plant Truck wash area Except when excessive contact with waste product that would otherwise constitute mine draina g e

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Table 8.G-4. Applicability of the Multi-Sector Gene ral Permit to Stormwater Runoff From Active Minin g and Dressin g Sites, Temporarily Inactive Sites, and Sites Under g oin g Reclamation Discharge/Source of Discharge Note/Comment Reclamation-related areas Any disturbed area (unreclaimed) Only if not in active mining area Reclaimed areas released from reclamation requirements prior to Dec. 17, 1990 --
Partially/inadequately reclaimed areas or areas not released from reclamation requirements --

Note: Stormwater runoff from these sources are subject to the NPDES program for stormwater unless mixed with discharges subject to 40 CFR Part 440 that are regulated by another permit prior to mixing. Non-stormwater discharges from these sources are subject to NPDES permitting and may be subject to the effluent limitation guidelines under 40 CFR Part 440. Discharges from overburden/waste rock and overburden/waste rock-related areas are not subject to 40 CFR Part 440 unless: (1) it drains naturally (or is intentionally diverted) to a point source; and (2) combines with ''mine drainage'' that is otherwise regulated under the Part 440 regulations. For such sources, coverage under this permit would be available if the discharge composed entirely of stormwat er does not combine with other sources of mine drainage that are not subject to 40 CFR Part 440, as well as meeting other eligibility criteria contained in Part 1.1 of the permit. Permit applicants bear the initial responsibility for determining the applicable technology-based standard for such discharges. EPA recommends that permit applicants contact the relevant NPDES permit issuance authority for assistance to determine the nature and scope of the ''active mining area'' on a mine-by-mine basis, as well as to determine the appropriate permitting mechanism for authorizing such discharges.

8.G.9. Termination of Permit Coverage
8.G.9.1 Termination of Permit Coverage for Si tes Reclaimed After December 17, 1990. A site or a portion of a site that has been released from applicable state or federal reclamation requirements after December 17, 1990, is no longer required to maintain coverage under this permit. If the site or portion of a site reclaimed after December 17, 1990, was not subject to reclamation requirements, the site or portion of the site is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed as defined in Part 8.G.3.5.

8.G.9.2 Termination of Permit Coverage for Sites Reclaimed Before December 17, 1990. A site or portion of a site that was released from applicable state or federal reclamation requirements before December 17, 1990, or that was otherwise reclaimed before December 17, 1990, is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed. A site or portion of a site is considered to have been reclaimed if: (1) stormwater runoff that comes into contact with raw materials, intermediate byproducts, finished products, and waste products does not have the potential to cause or contribute to violations of state water quality standards, (2) soil disturbing activities related to mining at the sites or portion of the site have been completed, (3) the site or portion of the site has been stabilized to minimize soil erosion, and (4) as appropriate depending on location, size, and the potential to contribute pollutants to stormwater discharges, the site or portion of the site has been revegetated, will be amenable to natural re vegetation, or will be left in a condition consistent with the post-mining land use.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart H – Sector H – Coal Mines an d Coal Mining-Related Facilities.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.H.1 Covered Stormwater Discharges. The requirements in Subpart H apply to stormw ater discharges associated with industrial activity from Coal Mines and Coal Mining-Relat ed facilities as identified by the SIC Codes specified under Sector H in Table D-1 of Appendix D. 8.H.2 Limitations on Coverage.
8.H.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) Not covered by this permit: discharges from pollutant seeps or underground drainage from inactive coal mines and refuse disposal areas that do not result from precipitation events, and discharges from floor drains in maintenance buildings and other similar drains in mining and preparation plant areas.

8.H.2.2 Discharges Subject to Stormwater Effluent Guidelines. (See also Part 1.1.2.4) Not authorized by this permit: stormwater discharges subject to an existing effluent limitation guideline at 40 CFR Part 434.

8.H.3 Definitions The following definitions are not intended to supersede the definitions of active and inactive mining facilities established by 40 CFR 122.26(b)(14)(iii).

8.H.3.1 Mining operation - Consists of the active and temporarily inactive phases, and the reclamation phase, but excludes the exploration and construction phases.

8.H.3.2 Exploration phase - Entails exploration and land disturbance activities to determine the financial viability of a site. The exploration phase is not considered part of “mining operations.”

8.H.3.3 Construction phase - Includes the building of site access roads and removal of overburden and waste rock to expose mineable coal. The construction phase is not considered part of “mining operations.”

8.H.3.4 Active phase - Activities including the extraction, removal or recovery of coal. For surface mines, this definition does not incl ude any land where grading has returned the earth to a desired contour and reclamation has begun. This definition is derived from the definition of “active mining area” found at 40 CFR 434.11(b). The active phase is considered part of “mining operations.”

8.H.3.5 Reclamation phase - Activities undertaken, in complia nce with applicable mined land reclamation requirements, following the cessation of the “active phase”, intended to return the land to an appropriate post-mining land use. The reclamation phase is considered part of "mining operations."

8.H.3.6 Active coal mining facility - A place where work or other activity related to the extraction, removal, or recovery of coal is being conducted. For surface mines, this definition does not include any land where grading has returned the earth to a desired

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contour and reclamation has begun. This definition is derived from the definition of “active mining area” found at 40 CFR 434.11(b).

8.H.3.7 Inactive coal mining facility - A site or portion of a site where coal mining and/or milling occurred in the past but is not an active facility as defined above, and where the inactive portion is not covered by an active mining permit issued by the applicable State or Federal agency. An inactive coal mining facility has an identifiable owner / operator. Sites where mining claims are being maintained prior to disturbances associated with the extraction, beneficiation, or processing of mined materials and sites where minimal activities are undertaken for the sole purpose of maintaining a mining claim are not considered either active or inactive mining facilities and do not require an NPDES industrial stormwater permit.

8.H.3.8 Temporarily inactive coal mining facility - A site or portion of a site where coal mining and/or milling occurred in the past but currently are not being actively undertaken, and the facility is covered by an active mining permit issued by the applicable State or Federal agency.

8.H.3.9 Final Stabilization - A site or portion of a site is “finally stabilized” when it has implemented all applicable Federal and State reclamation requirements.
8.H.4 Technology-Based Effluent Limits for Clearing, Grading, and Excavation Activities. Clearing, grading, and excavation activities being conducted as part of the exploration and construction phase of mining activities are covered under this permit. During clearing, grading, and excavation activities you must comply with all applicable effluent limits in Part 2 of this permit, and you must also comply with th e following effluent limits which are from the 2012 version of EPA’s Construction General Permit (CGP). Contained in Part 8.H.4 are the basic requirements of EPA’s CGP, however, you should consult EPA’s CGP to ensure full compliance is achieved. 8.H.4.1.1 Installation of Stormwater Controls (See Part 2.1.1.3 of EPA’s CGP)

x By the time construction commences, stormwater controls to treat initial disturbance must be installed and made operational.

x Controls must be installed along perimeter areas of site that will receive stormwater flow.

x Remaining controls must be installed as soon as conditions allow

8.H.4.1.2 Maintenance of Stormwater Controls (See Part 2.1.1.4 of EPA’s CGP)

x At any time, if a stormwater control needs repair or replacement to continue operating effectively;

o Initiate work to fix the problem immediately

o Complete work by end of the next work day

x If a stormwater control must be replaced or significantly repaired, work must be completed within 7 days, unless infeasible

8.H.4.1.3 Natural Buffers (See Part 2.1.2.1 and Appendix G of EPA’s CGP). If earth disturbances will occur within 50 feet of a water of the U.S., additional protections apply. You must comply with 1 of 3 compliance alternatives:

1. Provide a 50-foot undisturbed natural buffer between construction disturbances and the water of the U.S.; or 2. Provide an undisturbed natural buffer that is less than 50 feet supplemented by additional erosio n and sediment controls, which

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in combination, achieve a sediment load reduction that is equivalent to a 50-foot buffer; or 3. If it is infeasible to provide an undisturbed natural buffer of any size, implement erosion and sediment co ntrols that achieve a sediment load reduction that is equi valent to a 50-foot buffer.

There are exceptions when buff er requirements don’t apply:

1. There is no stormwater discharge fr om construction disturbances to the water of the U.S.; 2. The natural buffer has already been eliminated by preexisting development disturbances; or 3. The disturbance is for the construction of a water-dependent structure (pier, boat ramp) or construction approved under a CWA section 404 permit.

8.H.4.1.4 Sediment Discharge Controls (See Parts 2.1.2.2 – 2.1.3.3 of EPA’s CGP)

Perimeter controls:

x Install sediment controls along those perimeter areas of your site that will receive stormwater; and

x Remove sediment before it has accumulated to one-half of the above-ground height of any perimeter control.

Sediment track-out:

x Restrict vehicle use to designated exit points;

x Use appropriate stabilization techniques; and

x Remove tracked-out sediment by end of the work day.

Soil or sediment stockpiles:

x Locate the piles outside of any natural buffers established under Part 8.H.4.1.3;

x Protect from contact with stormwater runoff using temporary barriers; and

x Provide cover or appropriate temporary stabilization, where practicable.

Storm drain inlets:

x Install inlet protection measures (at sewer inlets that you can access) that remove sediment prior to discharge into storm drain

x Can be removed in the event of flood conditions or to prevent erosion; and

x Clean, or remove and replace, the protection measures as sediment accumulates, the filter becomes clogged, and/or performance is compromised

Sediment basins

x Provide storage for either (1) the 2-year, 24-hour storm, or (2) 3,600 cubic feet per acre drained; and

x Utilize outlet structures that withdraw water from surface, unless infeasible.

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x Prevent erosion of (1) the sediment basin using stabilization controls (e.g., erosion control blankets), and (2) the inlet and outlet using erosion controls and velocity dissipation devices; and

x Locate sediment basins outside any natural buffers established under Part 8.H.4.1.3.

Other related requirements:

x Minimize amount of soil exposed at any one time during construction

x Minimize steep sl ope disturbances

x Minimize soil compaction

x Direct stormwater to the site’s vegetated areas unless infeasible

8.H.4.1.5 Restrictions on Use of Treatmen t Chemicals (See Part 2.1.3.3 of EPA’s CGP). If you will use treatment chemicals at your site, you are subject to the following minimum requirements:

x Use conventional E&S controls prior to and after application of chemical;

x Select chemicals suited to soil type, and expected turbidity, pH, flow rate;

x Minimize discharge risk from stored chemicals;

x Apply in accordance with state/lo cal requirements, good engineering practices, and dosage recommendations of chemical supplier; and

x Ensure proper training.

The use of cationic treatment chemi cals is not allowed under the MSGP unless EPA specifically authorizes its use:

x You will need to contact the applicable EPA Regional Office if you intend to use cationic treatment chemicals at your site to determine what information EPA requires to evaluate your request; and

x Use of cationic chemicals will likely be subject to additional requirements to ensure protecti on of water quality standards.

8.H.4.1.6 Site Stabilization (See Part 2.2 of EPA’s CGP)

When to initiate stabilization:

x By no later than the end of the next work day after construction work in an area has stopped permanently or temporarily

When stabilization must be completed:

x If using vegetative measures, by no later than 14 days after initiating stabilization, the operator must:

o Seed or plant the area, and provide temporary cover to protect planted area; and

o Once established, vegetation must cover at least 70% of stabilized area based on density of native vegetation.

x If using non-vegetative stabilization, by no later than 14 days after initiating stabilization, the operator must:

o Install or apply all non-vegetative measures; and

o Cover all areas of exposed soil.

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Exceptions:

x Arid, semi-arid (if construction occurs during seasonally dry period), or drought-stricken areas:

o Within 14 days of stopping constr uction work in an area, install any necessary non-vegetative stabilization measures;

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

x Sites affected by severe storm events or other unforeseen circumstances:

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

8.H.4.2 Pollution Prevention Requirem ents (See Part 2.3 of EPA’s CGP)

8.H.4.2.1 Prohibited No n-Stormwater Discharges:

x Wastewater from washout of concrete, unless managed by an appropriate control;

x Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials, unless managed by an appropriate control;

x Fuels, oils, or other pollutants used for O&M of vehicles or equipment;

x Soaps or solvents used in vehi cle or equipment washing; and

x Toxic or hazardous substances from a spill or other release

8.H.4.2.2 Design and Location Requirements:

x Use effective means of preventing discharge from pollution sources:

o Minimize exposure; or

o Use secondary containment or equivalent measures; or

o Provide spill kits.

x Use leak-proof containers for all chemicals:

o Locate away from surface waters, storm sewer inlets, and drainageways; and

o Clean up spills immediately – do not clean by hosing area down

8.H.4.3 Water-Quality Requirements Stricter requirements apply if your site will discharge to an impaired water or a water that is identified by your state, tribe, or EPA as a Tier 2 or Tier 2.5 for antidegradation purposes:

x More rapid stabilization of exposed areas:

o Complete initial stabilization activities within 7 days of stopping construction work.

x More frequent sit e inspections:

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o Once every 7 days and within 24 hours of a storm event of 0.25 inches or greater.

8.H.4.4 Inspection Requirements (See Part 4.1 of EPA’s CGP)

8.H.4.4.1 Inspection Frequency

x At least once every 7 calendar days, or

x Once every 14 calendar days and within 24 hours of a storm event of 0.25 inches or greater. Note:

o Inspections only required during working hours;

o Inspections not required during unsafe conditions; and

o If you choose to inspect once ever y 14 days, you must have a method for measuring rainfall amount on site (either rain gauge or representative weather station)

8.H.4.4.2 Reductions in Inspection Frequency

x Stabilized areas: You may reduce the frequency of inspections to once per month in any area of your site where the stabiliz ation as occurred pursuant to Part 8.H.4.1.6.

x Arid, semi-arid, and drought stricken area s: if construction is occurring during the seasonally dry period or during a period in which drought is predicted to occur, you may reduce inspections to once per month and within 24 hours of a 0.25 inch storm event.

x Frozen conditions: You may temporarily suspend or reduce inspections (to once per month) until thawing conditions occur if frozen conditions are continuous and disturbed areas have been stabilized.

8.H.4.4.3 Areas to be Inspected: You must at a minimum inspect the following areas:

x All disturbed areas;

x All stormwater controls and pollution prevention measures;

x All locations where stabilization measures have been implemented;

x Material, waste, borrow, or equipm ent storage and maintenance areas;

x All areas where stormwater flows; and

x All points of discharge.

8.H.4.4.4 What to Check for During Inspections At a minimum you must check:

x Whether all stormwater controls are installed, operational, and working as intended;

x If any new or modified stormwater controls are needed;

x Conditions that could lead to a spill or leak; and

x Visual signs of erosion/sedimentation at points of discharge.

If a discharge is occurring:

x The quality and characteristics of the discharge; and

x Whether controls are operating effectively

8.H.4.4.5 Inspection Report Within 24 hours of an inspection, complete a report that includes:

x Inspection date;

x Name and title of inspector(s);

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x Summary of inspec tion findings ;

x Rainfall amount that triggered the inspection (if applicable);

x If it was unsafe to inspect a portion of the site, include documentation of the reason and the location(s;)

x Each inspection report must be signed; and

x Must keep a current copy of all reports at the site or at an easily accessible location. 8.H.5 Additional Technology-Based Effluent Limits.
8.H.5.1 Good Housekeeping Measures. (See also Part 2.1.2.2) As part of your good housekeeping program, use sw eepers and covered storage, watering haul roads to minimize dust generation, and conserving vegetation to minimize erosion where practicable.

8.H.5.2 Preventive Maintenance. (See also Part 2.1.2.3) Perform inspections or other equivalent measures of storage tanks and pressure lines of fuels, lubricants, hydraulic fluid, and slurry to prevent leaks due to deterioration or faulty connections.

8.H.6 Additional SWPPP Requirements.
8.H.6.1 Other Applicable Regulations. Most active coal mining-related areas (SIC Codes 1221- 1241) are subject to sediment and erosion co ntrol regulations of the U.S. Office of Surface Mining (OSM) that enforces the Surface Mining Control and Reclamation Act (SMCRA). OSM has granted authority to most coal-producing states to implement SMCRA through State SMCRA regulations. All SMCRA requirements regarding control of stormwater-related pollutant discharges must be addressed and then documented with the SWPPP (directly or by reference).

8.H.6.2 Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: haul and access roads; railroad spurs, sliding, and internal hauling lines; conveyor belts, chutes, and aerial tramways; equipment storage and maintenance yards; coal handling buildings and structures; and inactive mines and related areas; acidic spoil, refuse, or unreclaimed disturbed areas; and liquid storage tanks containing pollutants such as caustics, hydraulic fluids, and lubricants.

8.H.6.3 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following sources and activities that have potential pollutants associated with them: truck traffic on haul roads and resulting generation of sediment subject to runoff and dust generation; fuel or other liquid storage; pressure lines containing slurry, hydraulic fluid, or other potential harmful liquids; and loading or temporary storage of acidic refuse or spoil.
8.H.7 Additional Insp ection Requirements.
8.H.7.1 Inspections of Active Mining-Related Areas. (See also Part 3) Except for areas of the site subject to clearing, grading, and/or excavation activities conducted as part of the exploration and construction phase, which are subject to Part 8.H.4.2.4, perform routine inspections of active mining areas covered by this permit, corresponding with the inspections as performed by SMCRA inspectors, of all mining-related areas required by SMCRA. Also maintain the records of the SMCRA authority representative. See Part 8.H.8.1 for inspection requirements for inactive and unstaffed sties.

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8.H.7.2 Sediment and Erosion Control. (See also Part 2.1.2.5) As indicated in Part 8.H.6.1, SMCRA requirements regarding sediment and erosio n control measures must be complied with for those areas subject to SMCRA authorit y, including inspection requirements.

8.H.7.3 Routine Site Inspections. (See also Part 3.1) Your insp ection program must include inspections for pollutants enteri ng the drainage system from activities located on or near coal mining-related areas. Among the areas to be inspected are haul and access roads; railroad spurs, sliding, and internal hauling lines; conveyor belts, chutes, and aerial tramways; equipment storage and maintenance yards; coal handling buildings and structures; and inactive mines and related areas.
8.H.8 Sector-Specific Benchmarks. Table 8.H-1 identifies benchmarks that apply to the specific subsectors of Sector H. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.H-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector H1 . Coal Mines and Related Areas (SIC 1221-1241) Total Aluminum 0.75 mg/L Total Iron 1.0 m g /L Total Suspended Solids ( TSS ) 100 m g /L

8.H.8.1 Inactive and Unstaffed Sites – Conditional Exemption from No Exposure Requirement for Routine Inspections, Quarterly Visual Assessments, and Benchmark Monitoring. As a Sector H facility, if you are seeking to exerci se a waiver from either the quarterly visual assessment or the benchmark monitoring requ irements for inactive and unstaffed sites (including temporarily inactive sites), you are conditionally exempt from the requirement to certify that “there are no in dustrial materials or activities exposed to stormwater” in Parts 3.3.3 and 6.2.1.3, respec tively. Additionally, if you are seeking to reduce your required routine inspection frequency, as is allowed under Part 3.1.1, you are also conditionally exempt from the re quirement to certify that “there are no industrial materials or activities exposed to stormwater.” These conditional exemptions are based on the following requirements:

x If circumstances change and your facility becomes active and/or staffed, this exception no longer applies and you must immediately begin complying with the applicable benchmark monitoring requirements as if you were in your first year of permit coverage, and the quarterly vi sual assessment requirements; and

x EPA retains the authority to revoke this exemption and/or the monitoring waiver where it is determined that the discharge causes, has a reasonable potential to cause or contribute to an instream excursion above an applicable water quality standard, including designated uses. Subject to the two conditions above, if your facility is inactive and unstaffed, you are waived from the requirement to conduct quarterly visual assessments and routine facility inspections. You must still do an annual site inspection in accordance with Part 3.1. You are encouraged to inspect your site more frequently where you have reason

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to believe that severe weather or natural disasters may have damaged control measures or increased discharges. 8.H.9 Termination of Permit Coverage
8.H.9.1 Termination of Permit Coverage for Si tes Reclaimed After December 17, 1990. A site or a portion of a site that has been released from applicable state or federal reclamation requirements after December 17, 1990, is no longer required to maintain coverage under this permit. If the site or portion of a site reclaimed after December 17, 1990, was not subject to reclamation requirements, the site or portion of the site is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed as defined in Part 8.H.3.5.

8.H.9.2 Termination of Permit Coverage for Sites Reclaimed Before December 17, 1990. A site or portion of a site that was released from applicable state or federal reclamation requirements before December 17, 1990, or that was otherwise reclaimed before December 17, 1990, is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed. A site or portion of a site is considered to have been reclaimed if: (1) stormwater runoff that comes into contact with raw materials, intermediate byproducts, finished products, and waste products does not have the potential to cause or contribute to violations of state water quality standards, (2) soil disturbing activities related to mining at the sites or portion of the site have been completed, (3) the site or portion of the site has been stabilized to minimize soil erosion, and (4) as appropriate depending on location, size, and the potential to contribute pollutants to stormwater discharges, the site or portion of the site has been revegetated, will be amenable to natural revegetation, or will be left in a condition consistent with the post-mining land use.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart I – Sector I – Oil and Gas Extraction.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.I.1 Covered Stormwater Discharges. The requirements in Subpart I apply to stormw ater discharges associated with industrial activity from Oil and Gas Extraction facilities as identified by the SIC Codes specified under Sector I in Table D-1 of Appendix D of the permit. 8.I.1.1 Discharges of stormwater runoff from fiel d activities or operations associated with oil and gas exploration, production, processing, or treatment operations or transmission facilities are exempt from NPDES permit coverage unless, in accordance with 40 CFR 122.26(c)(1)(iii), the facility:

x Has had a discharge of stormwater resulting in the discharge of a reportable quantity for which notification is or was required pursuant to 40 CFR 117.21 or 40 CFR 302.6 at anytime since November 16, 1987; or

x Has had a discharge of stormwater result ing in the discharge of a reportable quantity for which notification is or was required pursuant to 40 CFR 110.6 at any time since November 16, 1987; or

x Contributes to a violation of a water quality standard. Any stormwater discharges that require permit coverage as a result of meeting one of the conditions of 122.26(c)(1)(iii) may be covered under this permit unless otherwise required to obtain coverage under an altern ative NPDES general permit or an individual NPDES permit as specified in Part 1.6.1. 8.I.2 Limitations on Coverage.
8.I.2.1 Stormwater Discharges Subject to Effluent Limitation Guidelines. (See also Part 1.1.4.5) This permit does not authorize stormwater discharges from petroleum drilling operations that are subject to nationally established effluent limitation guidelines found at 40 CFR Part 435, respectively.

8.I.2.2 Non-Stormwater Discharges. Discharges of vehicle and equipment washwater, including tank cleaning operations, are not authorized by this permit. Alternatively, washwater discharges must be authorized under a separate NPDES permit, or be discharged to a sanitary sewer in accordance with applicable industrial pretreatment requirements.
8.I.3 Additional Technology-Based Effluent Limits.
8.I.3.1 Vegetative Controls. Implement vegetative practices designed to preserve existing vegetation, where attainable, and revegetate open areas as soon as practicable after grade drilling. Implement appropriate vegetative practices, such as the following (or equivalent measures): temporary or perman ent seeding, mulching, sod stabilization, vegetative buffer strips, and tree protection practices. Begin implementing appropriate vegetative practices on all disturbed areas within 14 days following the last activity in that area.

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8.I.4 Additional SWPPP Requirements.
8.I.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: Reportable Quantity (RQ) releases; locations used for the treatment, storage, or disposal of wastes; processing areas and storage areas; chemical mixing areas; construction and drilling areas; all areas subject to the effluent guid elines requirements for “No Discharge” in accordance with 40 CFR 435.32; and the structural controls to achieve compliance with the “No Discharge” requirements.

8.I.4.2 Potential Pollutant Sources. (See also Part 5.2.3) Also document in your SWPPP the following sources and activities that have potential pollutants associated with them: chemical, cement, mud, or gel mixing activities; drilling or mining activities; and equipment cleaning and rehabilitation activities. In addition, include information about the reportable quantity (RQ) release that triggered the permit application requirements: the nature of the release (e.g., spill of oil from a drum storage area), amount of oil or hazardous substance released, amount of substance recovered, date of the release, cause of the release (e.g., poor handling techniques and lack of containment in the area), areas affected by the release (i.e., land and water), procedure to clean up release, actions or procedures implemented to prevent or improve response to a release, and remaining potential contamination of stormwater from release (taking into account human health risks, the control of drinking water intakes, and the designated uses of the receiving water).

8.I.4.3 Erosion and Sedimentation Control. (See also Part 2.1.2.5) Unless covered by EPA’s Construction General Permit (CGP), the additional documentation requirements for sediment and erosion controls for well drillings and sand/shale mining areas include the following:

8.I.4.3.1 Site Description. Also include a description in your SWPPP of the nature of the exploration activity, estimates of the tota l area of site and area disturbed due to exploration activity, an estimate of runoff coefficient of the site, a site drainage map, including approximate sl opes, and the names of all receiving waters.

8.I.4.3.2 Vegetative Controls. Document vegetative practices used consistent with Part 8.I.3.1 in the SWPPP.
8.I.5 Additional Inspection Requirements. All erosion and sedimentation control measures must be inspected either: 1) every 7 days; or 2) once every 14 calendar days and with in 24 hours of a storm event of 0.25 inches or greater.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart J – Sector J – Non-Metallic Mineral Mining and Dressing.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.J.1 Covered Stormwater Discharges. The requirements in Subpart J apply to stormw ater discharges associ ated with industrial activity from Active and Inactive Non-Metallic Mineral Mining and Dressing facilities as identified by the SIC Codes specified under Sector J in Table D-1 of Appendix D of the permit.

8.J.1.1 Covered Discharges from Inactive Facilities. All stormwater discharges.

8.J.1.2 Covered Discharges from Active and Temporarily Inactive Facilities. All stormwater discharges, except for most stormwater disc harges subject to the existing effluent limitation guideline at 40 CFR Part 436. Mine dewatering discharges composed entirely of stormwater or uncontaminated ground water seepage from: construction sand and gravel, industrial sand, and crushed stone mining facilities in Regions 1, 2, 3, 6, 9, and 10 are covered by this permit.

8.J.1.3 Covered Discharges from Exploration and Construction of Non-Metallic Mineral Mining Facilities. All stormwater discharges.
8.J.1.4 Covered Discharges from Sites Undergoing Reclamation. All stormwater discharges.
8.J.2 Limitations on Coverage. Most stormwater discharges subject to an existing effluent limitation guideline at 40 CFR Part 436 are not authorized by this permit. The exce ptions to this limitatio n, which are covered by this permit, are mine dewatering discharg es composed entirely of stormwater or uncontaminated ground water seepage from constr uction sand and gravel, industrial sand, and crushed stone mining facilities in Regions 1, 2, 3, 6, 9, and 10.

8.J.3 Definitions. The following definitions are not intended to supersede the definitions of active and inactive mining facilities established by 40 CFR 122.26(b)(14)(iii).

8.J.3.1 Mining operations - Consists of the active and temporarily inactive phases, and the reclamation phase, but excludes the exploration and construction phases.

8.J.3.2 Exploration phase - Entails exploration and land disturbance activities to determine the financial viability of a site. The exploration phase is not considered part of “mining operations.”

8.J.3.3 Construction phase - Includes the building of site access roads and removal of overburden and waste rock to expose mineab le minerals. The construction phase is not considered part of “mining operations”.

8.J.3.4 Active phase - Activities including the extraction, re moval or recovery of minerals. For surface mines, this definition does not incl ude any land where grading has returned the earth to a desired contour and reclamation has begun. This definition is derived from

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the definition of “active mining area” found at 40 CFR 440.132(a). The active phase is considered part of “mining operations.”

8.J.3.5 Reclamation phase - Activities undertaken, in complia nce with applicable mined land reclamation requirements, following the cess ation of the “active phase”, intended to return the land to an appropriate post-mining land use. The reclamation phase is considered part of "mining operations".
NOTE: The following definitions are not intend ed to supersede the definitions of active and inactive mining facilities established by 40 CFR 122.26(b)(14)(iii).

8.J.3.6 Active Mineral Mining Facility - A place where work or other activity related to the extraction, removal, or recovery of minerals is being conducted. For surface mines, this definition does not include any land where grading has returned the earth to a desired contour and reclamation has begun. This definition is derived from the definition of “active mining area” found at 40 CFR 440.132(a).

8.J.3.7 Inactive Mineral Mining Facility - A site or portion of a site where mineral mining and/or milling occurred in the past but is not an active facility as defined above, and where the inactive portion is not covered by an active mining permit issued by the applicable State or Federal agency. An inactive mineral mining facility has an identifiable owner / operator. Sites where mining claims are being maintained prior to disturbances associated with the extraction, beneficiation, or processing of mined materials, and sites where minimal activities are undertak en for the sole purpose of maintaining a mining claim are not considered either active or inactive mining facilities and do not require an NPDES industrial stormwater permit.

8.J.3.8 Temporarily Inactive Mineral Mining Facility - A site or portion of a site where metal mining and/or milling occurred in the past but currently are not being actively undertaken, and the facility is covered by an active mining permit issued by the applicable State or Federal agency.

8.J.3.9 Final Stabilization - a site or portion of a site is “finally stabilized” when it has implemented all applicable Federal and State reclamation requirements.

8.J.3.10 Uncontaminated - Free from the presence of pollutants attributable to industrial activity.
8.J.4 Technology-Based Effluent Limits for Clearing, Grading, and Excavation Activities. Clearing, grading, and excavation activities being conducted as part of the exploration and construction phase of mining activities are covered under this permit. During clearing, grading, and excavation activities you must comply with all applicable effluent limits in Part 2 of this permit, and you must also comply with th e following effluent limits which are from the 2012 version of EPA’s Construction General Permit (CGP). Contained in Part 8.J.4 are the basic requirements of EPA’s CGP, however, you should consult EPA’s CGP to ensure full compliance is achieved. 8.J.4.1.1 Installation of Stormwater Controls (See Part 2.1.1.3 of EPA’s CGP)

x By the time construction commences, stormwater controls to treat initial disturbance must be installed and made operational.

x Controls must be installed along perimeter areas of site that will receive stormwater flow.

x Remaining controls must be installed as soon as conditions allow

8.J.4.1.2 Maintenance of Stormwater Controls (See Part 2.1.1.4 of EPA’s CGP)

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x At any time, if a stormwater control needs repair or replacement to continue operating effectively;

o Initiate work to fix the problem immediately

o Complete work by end of the next work day

x If a stormwater control must be replaced or significantly repaired, work must be completed within 7 days, unless infeasible

8.J.4.1.3 Natural Buffers (See Part 2.1.2.1 and Appendix G of EPA’s CGP). If earth disturbances will occur within 50 feet of a water of the U.S., additional protections apply. You must comply with 1 of 3 compliance alternatives:

4. Provide a 50-foot undisturbed natural buffer between construction disturbances and the water of the U.S.; or 5. Provide an undisturbed natural buffer that is less than 50 feet supplemented by additional erosion and sediment controls, which in combination, achieve a sediment load reduction that is equivalent to a 50-foot buffer; or 6. If it is infeasible to provide an undisturbed natural buffer of any size, implement erosion and sediment co ntrols that achieve a sediment load reduction that is equi valent to a 50-foot buffer.

There are exceptions when buff er requirements don’t apply:

4. There is no stormwater discharge fr om construction disturbances to the water of the U.S.; 5. The natural buffer has already been eliminated by preexisting development disturbances; or 6. The disturbance is for the construction of a water-dependent structure (pier, boat ramp) or construction approved under a CWA section 404 permit.

8.J.4.1.4 Sediment Discharge Controls (See Parts 2.1.2.2 – 2.1.3.3 of EPA’s CGP)

Perimeter controls:

x Install sediment controls along those perimeter areas of your site that will receive stormwater; and

x Remove sediment before it has accumulated to one-half of the above-ground height of any perimeter control.

Sediment track-out:

x Restrict vehicle use to designated exit points;

x Use appropriate stabilization techniques; and

x Remove tracked-out sediment by end of the work day.

Soil or sediment stockpiles:

x Locate the piles outside of any natural buffers established under Part 8.G.4.1.3;

x Protect from contact with stormwater runoff using temporary barriers; and

x Provide cover or appropriate temporary stabilization, where practicable.

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Storm drain inlets:

x Install inlet protection measures (at sewer inlets that you can access) that remove sediment prior to discharge into storm drain

x Can be removed in the event of flood conditions or to prevent erosion; and

x Clean, or remove and replace, the protection measures as sediment accumulates, the filter becomes clogged, and/or performance is compromised

Sediment basins

x Provide storage for either (1) the 2-year, 24-hour storm, or (2) 3,600 cubic feet per acre drained; and

x Utilize outlet structures that withdraw water from surface, unless infeasible.

x Prevent erosion of (1) the sediment basin using stabilization controls (e.g., erosion control blankets), and (2) the inlet and outlet using erosion controls and velocity dissipation devices; and

x Locate sediment basins outside any natural buffers established under Part 8.J.4.1.3.

Other related requirements:

x Minimize amount of soil exposed at any one time during construction

x Minimize steep sl ope disturbances

x Minimize soil compaction

x Direct stormwater to the site’s vegetated areas unless infeasible

8.J.4.1.5 Restrictions on Use of Treatmen t Chemicals (See Part 2.1.3.3 of EPA’s CGP). If you will use treatment chemicals at your site, you are subject to the following minimum requirements:

x Use conventional E&S controls prior to and after application of chemical;

x Select chemicals suited to soil type, and expected turbidity, pH, flow rate;

x Minimize discharge risk from stored chemicals;

x Apply in accordance with state/lo cal requirements, good engineering practices, and dosage recommendations of chemical supplier; and

x Ensure proper training.

The use of cationic treatment chemi cals is not allowed under the MSGP unless EPA specifically authorizes its use:

x You will need to contact the applicable EPA Regional Office if you intend to use cationic treatment chemicals at your site to determine what information EPA requires to evaluate your request; and

x Use of cationic chemicals will likely be subject to additional requirements to ensure protecti on of water quality standards.

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8.J.4.1.6 Site Stabilization (See Part 2.2 of EPA’s CGP)

When to initiate stabilization:

x By no later than the end of the next work day after construction work in an area has stopped permanently or temporarily

When stabilization must be completed:

x If using vegetative measures, by no later than 14 days after initiating stabilization, the operator must:

o Seed or plant the area, and provide temporary cover to protect planted area; and

o Once established, vegetation must cover at least 70% of stabilized area based on density of native vegetation.

x If using non-vegetative stabilization, by no later than 14 days after initiating stabilization, the operator must:

o Install or apply all non-vegetative measures; and

o Cover all areas of exposed soil.

Exceptions:

x Arid, semi-arid (if construction occurs during seasonally dry period), or drought-stricken areas:

o Within 14 days of stopping constr uction work in an area, install any necessary non-vegetative stabilization measures;

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

x Sites affected by severe storm events or other unforeseen circumstances:

o Initiate vegetative stabilization as soon conditions on the site allow;

o Document the schedule that will be followed for initiating and completing vegetative stabilization; and

o Area must be planted so that within 3 years 70% cover requirement is met.

8.J.4.2 Pollution Prevention Requirements (See Part 2.3 of EPA’s CGP)

8.J.4.2.1 Prohibited No n-Stormwater Discharges:

x Wastewater from washout of concrete, unless managed by an appropriate control;

x Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials, unless managed by an appropriate control;

x Fuels, oils, or other pollutants used for O&M of vehicles or equipment;

x Soaps or solvents used in vehi cle or equipment washing; and

x Toxic or hazardous substances from a spill or other release

8.J.4.2.2 Design and Location Requirements:

x Use effective means of preventing discharge from pollution sources:

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o Minimize exposure; or

o Use secondary containment or equivalent measures; or

o Provide spill kits.

x Use leak-proof containers for all chemicals:

o Locate away from surface waters, storm sewer inlets, and drainageways; and

o Clean up spills immediately – do not clean by hosing area down

8.J.4.3 Water-Quality Requirements Stricter requirements apply if your site will discharge to an impaired water or a water that is identified by your state, tribe, or EPA as a Tier 2 or Tier 2.5 for antidegradation purposes:

x More rapid stabilization of exposed areas:

o Complete initial stabilization activities within 7 days of stopping construction work.

x More frequent site inspections:

o Once every 7 days and within 24 hours of a storm event of 0.25 inches or greater.

8.J.4.4 Inspection Requirements (See Part 4.1 of EPA’s CGP)

8.J.4.4.1 Inspection Frequency

x At least once every 7 calendar days; or

x Once every 14 calendar days and within 24 hours of a storm event of 0.25 inches or greater.

x Note:

o Inspections only required during working hours;

o Inspections not required during unsafe conditions; and

o If you choose to inspect once ever y 14 days, you must have a method for measuring rainfall amount on site (either rain gauge or representative weather station)

8.J.4.4.2 Reductions in Inspection Frequency

x Stabilized areas: You may reduce the frequency of inspections to once per month in any area of your site where th e stabilization as occurred pursuant to Part 8.J.4.1.6.

x Arid, semi-arid, and drought stricken area s: if construction is occurring during the seasonally dry period or during a period in which drought is predicted to occur, you may reduce inspections to once per month and within 24 hours of a 0.25 inch storm event.

x Frozen conditions: You may temporarily suspend or reduce inspections (to once per month) until thawing conditions occur if frozen conditions are continuous and disturbed areas have been stabilized.

8.J.4.4.3 Areas to be Inspected: You must at a minimum inspect the following areas:

x All disturbed areas;

x All stormwater controls and pollution prevention measures;

x All locations where stabilization measures have been implemented;

x Material, waste, borrow, or equipm ent storage and maintenance areas;

x All areas where stormwater flows; and

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x All points of discharge.

8.J.4.4.4 What to Check for During Inspections At a minimum you must check:

x Whether all stormwater controls are installed, operational, and working as intended;

x If any new or modified stormwater controls are needed;

x Conditions that could lead to a spill or leak; and

x Visual signs of erosion/sedimentation at points of discharge.

If a discharge is occurring:

x The quality and characteristics of the discharge; and

x Whether controls are operating effectively

8.J.4.4.5 Inspection Report Within 24 hours of an inspection, complete a report that includes:

x Inspection date;

x Name and title of inspector(s);

x Summary of inspec tion findings ;

x Rainfall amount that triggered the inspection (if applicable);

x If it was unsafe to inspect a portion of the site, include documentation of the reason and the location(s);

x Each inspection report must be signed; and

x Must keep a current copy of all reports at the site or at an easily accessible location. 8.J.5 Additional Technology-Based Effluent Limits.
8.J.5.1 Employee Training. Conduct employee training at least annually at active and temporarily inactive sites. (See also Part 2.1.2.8).

8.J.5.2 Stormwater Controls. Apart from the control measures you implement to meet your Part 2 effluent limits, where necessary to mini mize pollutant discharges, implement the following control measures at your site. The potential pollutants identified in Part 8.J.5.3 shall determine the priority and appropriat eness of the control measures selected.

8.J.5.2.1 Stormwater Diversions: Divert stormwater away from potential pollutant sources where practicable. The following are some control measure options: interceptor or diversion cont rols (e.g., dikes, swales, curbs, or berms); pipe slope drains; subsurface drains; conveyance systems (e.g., channels or gutters, open-top box culverts, and waterbars; rolling dips and road sloping; roadway surface water deflector and culverts); or their equivalents.

8.J.5.2.2 Capping: When capping is necessary to mi nimize pollutant discharges in stormwater, identify the source being capped and the material used to construct the cap.

8.J.5.2.3 Treatment: If treatment of stormwater (e.g., chemical or physical systems, oil and water separators, artificial wetlands) is necessary to protect water quality, describe the type and location of treatment used. Passive and/or active treatment of stormwater runoff is encouraged. Treated runoff may be discharged as a stormwater source regulated under this permit provided the discharge is not combined with discharges subject to effluent limitation guidelines for the Mineral Mining and Processing Point Source Category (40 CFR Part 436).

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8.J.5.3 Discharge Testing: (See also Part 5.2.4.4) Test or evaluate all outfalls covered under this permit for the presence of specific mining-r elated non-stormwater discharges such as discharges subject to effluent limitations guidelines (e.g., 40 CFR Part 436). Alternatively (if applicable), you may keep a certification with your SWPPP, per Part 8.J.6.5.
8.J.6 Additional SWPPP Requirements. The requirements in Part 8.J.6 are appli cable for sites undergoing exploration and construction, active mineral mining facilities, te mporarily inactive mineral mining facilities, and sites undergoing reclamation. The requirements in Part 8.J.6 are not applicable to inactive mineral mining facilities.

8.J.6.1 Nature of Industrial Activities. (See also Part 5.2.2) Document in your SWPPP the mining and associated activities that can potentially affect the stormwater discharges covered by this permit, including a general description of the location of the site relative to major transportation routes and communities

.
8.J.6.2 Site Map. (See also Part 5.2.2) Document in yo ur SWPPP the locations of the following (as appropriate): mining or milling site boundaries; access and haul roads; outline of the drainage areas of each stormwater outfall within the facility with indications of the types of discharges from the drainage areas; location(s) of all permitted discharges covered under an individual NPDES permit, outdoor equipment storage, fueling, and maintenance areas; materials handling areas; outdoor manufacturing, outdoor storage, and material disposal areas; outd oor chemicals and explosives storage areas; overburden, materials, soils, or waste stor age areas; location of mine drainage dewatering or other process water; heap leach pads; off-site points of discharge for mine dewatering and process water; surface waters; boundary of tributary areas that are subject to effluent limitations guidelines; and location(s) of reclaimed areas.

8.J.6.3 Potential Pollutant Sources. (See also Part 5.2.3) For each area of the mine or mill site where stormwater discharges associated with industrial activities occur, document in your SWPPP the types of pollutants (e.g., heavy metals, sediment) likely to be present in significant amounts. For example, phosphate mining facilities will likely need to document pollutants such as selenium, which can be present in significant amounts in their discharges. Consider these factors: th e mineralogy of the waste rock (e.g., acid forming); toxicity and quantity of chem icals used, produced, or discharged; the likelihood of contact with stormwater; vegetation of site (if any); and history of significant leaks or spills of toxic or hazardous pollutants. Also include a summary of any existing waste rock or overburden characterization data and test results for potential generation of acid rock drainage.

8.J.6.4 Stormwater Controls. To the extent that you use any of the control measures in Part 8.J.5.2, document them in your SWPPP pursuant to Part 5.2.4. If control measures are implemented or planned but are not listed here (e.g., substituting a less toxic chemical for a more toxic one), include desc riptions of them in your SWPPP.

8.J.6.4 Employee Training. All employee training(s) conducted in accordance with Part 8.J.5.1 must be documented with the SWPPP.

8.J.6.5 Certification of Permit Coverage for Commingled Non-Stormwater Discharges. If you determine that you are able to certify, consistent with Part 8.J.5.3, that a particular discharge composed of commingled stormwater and non-stormwater is covered under a separate NPDES permit, and that permit subjects the non-stormwater portion to effluent limitations prior to any commingling, you must retain such certification with your SWPPP. This certification must identify the non-stormwater discharges, the applicable

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NPDES permit(s), the effluent limitations plac ed on the non-stormwater discharge by the permit(s), and the points at which the limitations are applied.
8.J.7 Additional Inspection Requirements.

8.J.7.1 Inspections of Active Mining-Related Areas (See also Part 3). Except for areas of the site subject to clearing, grading, and/or excavation activities conducted as part of the exploration and construction phase, which are subject to Part 8.J.4.4, perform inspections at least quarterly unless adverse weather conditions make the site inaccessible. Sites which discharge to waters which are designated as Tier 2 or 2.5 or waters which are impaired for sediment or nitrogen must be inspected monthly, unless subject to 8.J.4.3. See Part 8.J.8.1 for inspection requirements for inactive and unstaffed sites. (See also Part 3.1.1 and 8.J.4.4.) 8.J.8 Sector-Specific Benchmarks Table 8.J-1 identifies benchmarks that apply to the specific subsectors of Sector J. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.J-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector J1 . Sand and Gravel Mining (SIC 1442, 1446) Nitrate plus Nitrite Nitro g en 0.68 m g /L Total Suspended Solids (TSS) 100 mg/L Subsector J2 . Dimension and Crushed Stone and Nonmetallic Minerals (except fuels) (SIC 1411, 1422-1429, 1481, 1499) Total Suspended Solids (TSS) 100 mg/L

8.J.8.1 Inactive and Unstaffed Sites – Conditional Exemption from No Exposure Requirement for Routine Inspections, Quarterly Visual Assessments, and Benchmark Monitoring. As a Sector J facility, if you are seeking to exercise a waiver from either the routine inspection, quarterly visual assessment or the benchmark monitoring requirements for inactive and unstaffed sites (including temporarily inactive sites), you are conditionally exempt from the requirement to certify that “there are no industrial materials or activities exposed to stormwater” in Parts 3.1. 1, 3.2.3 and 6.2.1.3, respectively. This exemption is conditioned on the following:

x If circumstances change and your facility becomes active and/or staffed, this exception no longer applies and you must immediately begin complying with the applicable benchmark monitoring requirements as if you were in your first year of permit coverage, and the quarterly vi sual assessment requirements; and

x EPA retains the authority to revoke this exemption and/or the monitoring waiver where it is determined that the discharge causes, has a reasonable potential to cause, or contributes to an instream excursion above an applicable water quality standard, including designated uses. Subject to the two conditions above, if your facility is inactive and unstaffed, you are waived from the requirement to conduct quarterly visual assessments and routine facility inspections. You must still do an annu al site inspection in accordance with Part

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3.1. You are encouraged to inspect your site more frequently where you have reason to believe that severe weather or natural disasters may have damaged control measures or increased discharges.

8.J.9 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit)

Table 8.J-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

Table 8.J-2

Industrial Activity Parameter Effluent Limit 1 Mine dewatering discharges at crushed stone minin g facilities ( SIC 1422 - 1429 ) pH 6.0 - 9.0

Mine dewatering discharges at construction sand and g ravel minin g facilities ( SIC 1442 ) pH 6.0 - 9.0

Mine dewatering discharges at industrial sand mining facilities (SIC 1446) Total Suspended Solids (TSS) 25 mg/L, monthly avg. 45 mg/L, daily

maximum pH 6.0 - 9.0

1 Monitor annually.

8.J.10 Termination of Permit Coverage
8.J.10.1 Termination of Permit Coverage for Sites Reclaimed After December 17, 1990. A site or a portion of a site that has been released from applicable state or federal reclamation requirements after December 17, 1990, is no longer required to maintain coverage under this permit. If the site or portion of a site reclaimed after December 17, 1990, was not subject to reclamation requirements, the site or portion of the site is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed as defined in Part 8.J.3.5.

8.J.10.2 Termination of Permit Coverage for Sites Reclaimed Before December 17, 1990. A site or portion of a site that was released from applicable state or federal reclamation requirements before December 17, 1990, or that was otherwise reclaimed before December 17, 1990, is no longer required to maintain coverage under this permit if the site or portion of the site has been reclaimed. A site or portion of a site is considered to have been reclaimed if: (1) stormwater runoff that comes into contact with raw materials, intermediate byproducts, finished products, and waste products does not have the potential to cause or contribute to violations of state water quality standards, (2) soil disturbing activities related to mining at the sites or portion of the site have been completed, (3) the site or portion of the site has been stabilized to minimize soil erosion, and (4) as appropriate depending on location, size, and the potential to contribute pollutants to stormwater discharges, the site or portion of the site has been revegetated, will be amenable to natural re vegetation, or will be left in a condition consistent with the post-mining land use.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart K – Sector K – Hazardous Waste Trea tment, Storage, or Di sposal Facilities.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.K.1 Covered Stormwater Discharges. The requirements in Subpart K apply to stormw ater discharges associ ated with industrial activity from Hazardous Waste Treatment, Storage, or Disposal facilities (TSDFs) as identified by the Activity Code specified under Sector K in Table D-1 of Appendix D of the permit. 8.K.2 Industrial Activities Covered by Sector K. This permit authorizes stormwater discharges associated with industrial activity from facilities that treat, store, or dispose of haza rdous wastes and that are operating under interim status or a permit under subtitle C of RCRA. Disposal facilities that have been properly closed and capped, and have no significant materials exposed to stormwater, are considered inactive and do not require permits. 8.K.3 Limitations on Coverage.
8.K.3.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) The following are not authorized by this permit: leachate, gas collection condensate, drained free liquids, contaminated ground water, laboratory-derived wastewater, and contact washwater from washing truck and railcar exteriors and surface areas that have come in direct contact with solid waste at the landfill facility.

8.K.3.2 Limitations on Coverage for Facilities Providing Commercial TSDF Services. For facilities located in Region 6 (see Appendix C) coverage is limited to hazardous waste TSDFs that are self-generating (including occasionally accepting wastes from community household hazardous waste collection events as public service), handle only residential wastes, and/or only store hazardous wastes and do not treat or dispose of them. Coverage under this permit is not available to commercial waste disposal and treatment facilities located in Region 6 that dispose and treat on a commercial basis any produced hazardous wastes (i.e., not their own) as a se rvice to commercial or industrial generators.

8.K.4 Definitions.
8.K.4.1 Contaminated stormwater - stormwater that comes into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater as defined in Part 8.K.4.4. Some specific areas of a landfill that may produce contaminated stormwater include (but are not limited to) the open face of an active landfill with exposed waste (no cover added); the areas around wastewater treatment operations; trucks, equipment, or machinery that has b een in direct contact with the waste; and waste dumping areas.

8.K.4.2 Drained free liquids - aqueous wastes drained from waste containers (e.g., drums) prior to landfilling.

8.K.4.3 Landfill - an area of land or an excavation in which wastes are placed for permanent disposal, but that is not a land application or land treatment unit, surface impoundment, underground injection well, waste pile, salt dome formation, salt bed

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formation, underground mine, or cave as these terms are defined in 40 CFR 257.2, 258.2, and 260.10.

8.K.4.4 Landfill wastewater - as defined in 40 CFR Part 445 (Landfills Point Source Category), all wastewater associated with, or produced by, landfilling activities except for sanitary wastewater, non-contaminated stormwater, contaminated groundwater, and wastewater from recovery pumping wells. Landfill wastewater includes, but is not limited to, leachate, gas collection condensate, drained free liquids, laboratory derived wastewater, contaminated stormwat er, and contact washwater from washing truck, equipment, and railcar exteriors and surface areas that have come in direct contact with solid waste at the landfill facility.

8.K.4.5 Leachate - liquid that has passed through or emerged from solid waste and contains soluble, suspended, or miscible materials removed from such waste.

8.K.4.6 Non-contaminated stormwater - stormwater that does not come into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater as defined in Part 8.K.4.4. Non-contaminated stormwater includes stormwater that flows off the cap, cover, intermediate cover, daily cover, and/or final cover of the landfill.
8.K.5 Sector-Specific Benchmarks Table 8.K-1 identifies benchmarks that apply to the specific subsectors of Sector K. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.K-1.

Subsector (You may be subject to requirements for more than one sector/subsector ) Parameter Benchmark Monitoring Concentration Subsector K1 . ALL - Industrial Activity Code “HZ” (Note: permit coverage limited in some states). Benchmarks only applicable to discharges not subject to effluent limitations in 40 CFR Part 445 Subpart A (see below). Ammonia 2.14 m g /L Total Ma g nesium 0.064 m g /L Chemical Oxygen Demand ( COD ) 120 mg/L

Total Arsenic 0.15 m g /L Total Cadmium (freshwater) 2 Total Cadmium (saltwater) 1 Hardness Dependent

0.04 m g /L Total Cyanide 0.022 m g / L Total Lead (freshwater) 2 Total Lead (saltwater) 1 Hardness Dependent

0.21 m g /L Total Mercury 0.0014 mg/ L Total Selenium 0.005 m g /L Total Silver (freshwater) 2 Total Silver (saltwater) 1 Hardness Dependent

0.09 m g /L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

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Freshwater Hardness Range Cadmium (mg/L) Lead (mg/L) Silver (mg/L) 0-24.99 mg/L 0.0005 0.014 0.0007 25-49.99 mg/L 0.0008 0.023 0.0007 50-74.99 mg/L 0.0013 0.045 0.0017 75-99.99 mg/L 0.0018 0.069 0.0030 100-124.99 mg/L 0.0023 0.095 0.0046 125-149.99 mg/L 0.0029 0.122 0.0065 150-174.99 mg/L 0.0034 0.151 0.0087 175-199.99 mg/L 0.0039 0.182 0.0112 200-224.99 mg/L 0.0045 0.213 0.0138 225-249.99 mg/L 0.0050 0.246 0.0168 250+ mg/L 0.0053 0.262 0.0183

8.K.6 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.)

Table 8.K-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

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Table 8.K-2 1 Industrial Activity Parameter Effluent Limit Discharges from hazardous waste landfills subject to effluent limitations in 40 CFR Part 445 Subpart A (see footnote). Biochemical Oxygen Demand (BOD 5 ) 220 mg/L, daily maximum 56 m g /L, monthly av g . maximum Total Suspended Solids (TSS) 88 m g /L, daily maximum 27 m g /L, monthly av g . maximum Ammonia 10 m g /L, daily maximum 4.9 mg/L, monthly avg. maximum Alpha Terpineol 0.042 m g /L, daily maximum 0.019 m g /L, monthly av g . maximum Aniline 0.024 m g /L, daily maximum 0.015 m g /L, monthly av g . maximum Benzoic Acid 0.119 m g /L, daily maximum 0.073 m g /L, monthly av g . maximum Naphthalene 0.059 mg/L, daily maximum 0.022 m g /L, monthly av g . maximum p-Cresol 0.024 m g /L, daily maximum 0.015 m g /L, monthly av g . maximum Phenol 0.048 m g /L, daily maximum 0.029 m g /L, monthly av g . maximum Pyridine 0.072 m g /L, daily maximum 0.025 mg/L, monthly avg. maximum Total Arsenic 1.1 m g /L, daily maximum 0.54 m g /L, monthly av g . maximum Total Chromium 1.1 m g /L, daily maximum 0.46 m g /L, monthly av g . maximum Total Zinc 0.535 mg/L, daily maximum 0.296 m g /L, monthly av g . maximum pH Within the range of 6-9 standard pH units ( s.u. )

1 Monitor annually. As set forth at 40 CFR Part 445 Subpart A, these numeric limitations apply to contaminated stormwater discharges from hazardous waste landfills subject to the provisions of RCRA Subtitle C at 40 CFR Parts 264 (Subpart N) and 265 (Subpart N) except for any of the following facilities: (a) landfills operated in conjunction with other industrial or commercial operations when the landfill receives only wastes generated by the industrial or commercial operation directly associated with the landfill; (b) landfills operated in conjunction with other industrial or commercial operations when the landfill receives wastes generated by the industrial or commercial operation directly associated with the landfill and also receives other wastes, provided that the other wastes received for disposal are generated by a facility that is subject to the same provisions in 40 CFR Subchapter N as the industrial or commercial operation or that the other wastes received are of similar nature to the wastes generated by the industrial or commercial operation; (c) landfills operated in conjunction with Centralized Waste Treatment (CWT) facilities subject to 40 CFR Part 437, so long as the CWT facility commingles the landfill wastewater with other non-landfill wastewater for discharge. A landfill directly associated with a CWT facility is subject to this part if the CWT facility discharges landfill wastewater separately from other CWT wastewater or commingles the wastewater from its landfill only with wastewater from other landfills; or (d) landfills operated in conjunction with other industrial or commercial operations when the landfill receives wastes from public service activities, so long as the company owning the landfill does not receive a fee or other remuneration for the disposal service.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart L – Sector L – Landfills, Land Application Sites, and Open Dumps.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.L.1 Covered Stormwater Discharges. The requirements in Subpart L apply to stormw ater discharges associated with industrial activity from Landfills and Land Application Sites as identified by the Activity Code specified under Sector L in Table D-1 of Appendix D of the permit. 8.L.2 Industrial Activities Covered by Sector L. This permit may authorize stormwater discharges for Sector L facilities associated with waste disposal at landfills, land application sites that receive or have received industrial waste, including sites subject to regulation under Subtitle D of RCRA. This permit does not cover discharges from landfills that receive only municipal wastes. 8.L.3 Limitations on Coverage.
8.L.3.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) The following discharges are not authorized by this permit: leachate, gas collection condensate, drained free liquids, contaminated ground water, laboratory wastewater, and contact washwater from washing truck and railcar exteriors and surface areas that have come in direct contact with solid waste at the landfill facility. Discharges from open dumps as defined under RCRA are also not authorized under this permit.

8.L.4 Definitions.
8.L.4.1 Contaminated stormwater - stormwater that comes into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater. Some areas of a landfill that may produce contaminated stormwater include (but are not limited to) the open face of an active landfill with exposed waste (no cover added); the areas around wastewater treatment operations; tr ucks, equipment, or machinery that has been in direct contact with th e waste; and waste dumping areas.

8.L.4.2 Drained free liquids - aqueous wastes drained from waste containers (e.g., drums) prior to landfilling.

8.L.4.3 Landfill wastewater - as defined in 40 CFR Part 445 (Landfills Point Source Category) all wastewater associated with, or produced by, landfilling activities except for sanitary wastewater, non-contaminated stormwater, contaminated groundwater, and wastewater from recovery pumping wells. Landfill process wastewater includes, but isnot limited to, leachate; gas collection condensate; drained free liquids; laboratoryderived wastewater; contaminated stormwat er; and contact washwater from washing truck, equipment, and railcar exteriors and surface areas that have come in direct contact with solid waste at the landfill facility.

8.L.4.4 Leachate - liquid that has passed through or emerged from solid waste and contains soluble, suspended, or miscible materials removed from such waste.

8.L.4.5 Non-contaminated stormwater - stormwater that does not come into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater.

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Non-contaminated stormwater includes stormwater that flows off the cap, cover, intermediate cover, daily cover, and/or final cover of the landfill.
8.L.5 Additional Technology-Based Effluent Limits.
8.L.5.1 Preventive Maintenance Program. (See also Part 2.1.2.3) As part of your preventive maintenance program, maintain the following: all elements of leachate collection and treatment systems, to prevent commingling of leachate with stormwater; the integrity and effectiveness of any intermediate or final cover (including repairing the cover as necessary), to minimize the effects of settlement, sinking, and erosion.

8.L.5.2 Erosion and Sedimentation Control. (See also Part 2.1.2.5) Provide temporary stabilization (e.g., temporary seeding, mulching, and placing geotextiles on the inactive portions of stockpiles) for the following: materials stockpiled for daily, intermediate, and final cover; inactive areas of the landfill or open dump; landfills or open dump areas that have gotten final covers but where vegetation has yet to establish itself; and land application sites where waste application has been completed but final vegetation has not yet been established.
8.L.6 Additional SWPPP Requirements.
8.L.5.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: active and closed landfill cells or trenches, active and closed land application areas, locations where open dumping is occurring or has occurred, locations of any known leachate springs or other areas where uncontrolled leachate may commingle with runoff, and leachate collection and handling systems.

8.L.5.2 Summary of Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following sources and activities that have potential pollutants associated with them: fertilizer, herbicide, and pesticide application; earth and soil moving; waste hauling and loading or unloading; outdoor storage of significant materials, including daily, interim, and final cover material stockpiles as well as temporary waste storage areas; exposure of active and inactive landfill and land application areas; uncontrolled leachate flows; and failure or leaks from leachate collection and treatment systems.
8.L.7 Additional Inspection Requ irements. (See also Part 3)
8.L.7.1 Inspections of Active Sites. Except in arid and semi-arid climates, inspect operating landfills, open dumps, and land application sites at least once every 7 days. Focus on areas of landfills that have not yet been finally stabilized; active land application areas, areas used for storage of material and wa stes that are expose d to precipitation, stabilization, and structural control measures; leachate collection and treatment systems; and locations where equipment an d waste trucks enter and exit the site. Ensure that sediment and erosion control measures are operating properly. For stabilized sites and areas where land app lication has been completed, or where the climate is arid or semi-arid, conduct inspections at least once every month.

8.L.7.2 Inspections of Inactive Sites. Inspect inactive landfills, open dumps, and land application sites at least quarterly. Qualified personnel must inspect landfill (or open dump) stabilization and structural erosion control measures, leachate collection and treatment systems, and all closed land application areas.

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8.L.8 Additional Post-Authorization Documentation Requirements.
8.L.8.1 Recordkeeping and Internal Reporting. Keep records with your SWPPP of the types of wastes disposed of in each cell or tren ch of a landfill or open dump. For land application sites, track the types and quantities of wastes applied in specific areas.
8.L.9 Sector-Specific Benchmarks
Table 8.L-1 identifies benchmarks that apply to the specific su bsectors of Sector L. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

Table 8.L-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration 1
Subsector L1 . All Landfill, Land Application Sites and Open Dumps (Industrial Activity Code “LF”) Total Suspended Solids ( TSS ) 100 mg/L

Subsector L2 . All Landfill, Land Application Sites and Open Dumps, except Municipal Solid Waste Landfill (MSWLF) Areas Closed in Accordance with 40 CFR 258.60 (Industrial Activity Code “LF”) Total Iron 1.0 mg/L

1 Benchmark monitoring required only for discharges not subject to effluent limitations in 40 CFR Part 445 Subpart B (see Table L-2 above).

8.L.10. Effluent Limitations Based on Effluent Limi tations Guidelines (See also Part 6.2.2.1 of the permit.)

Table 8.L-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

Table 8.L-2 1
Industrial Activity Parameter Effluent LimitDischarges from nonhazardous waste landfills subject to effluent limitations in 40 CFR Part 445 Subpart B. Biochemical Oxygen Demand (BOD 5 ) 140 m g /L, daily maximum 37 m g /L, monthly av g . maximum Total Suspended Solids (TSS) 88 m g /L, daily maximum 27 m g /L, monthly av g . maximum Ammonia 10 m g /L, daily maximum 4.9 mg/L, monthly avg. maximum Alpha Terpineol 0.033 m g /L, daily maximum 0.016 mg/L monthly avg. maximum Benzoic Acid 0.12 m g /L, daily maximum 0.071 mg/L, monthly avg. maximum p-Cresol 0.025 m g /L, daily maximum

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Table 8.L-2 1
Industrial Activity Parameter Effluent Limit 0.014 mg/L, monthly avg. maximum Phenol 0.026 mg/L, daily maximum 0.015 mg/L, monthly avg. maximum Total Zinc 0.20 mg/L, daily maximum 0.11 m g /L, monthly av g . maximum pH Within the rang e of 6-9 standard pH units (s.u.)

1 Monitor annually. As set forth at 40 CFR Part 445 Subpart B, these numeric limitations apply to contaminated stormwater discharges from MSWLFs that have not been closed in accordance with 40 CFR 258.60, and to contaminated stormwater discharges from those landfills that are subject to the provisions of 40 CFR Part 257 except for discharges from any of the following facilities: (a) landfills operated in conjunction with other industrial or commercial operations, when the landfill receives only wastes generated by the industrial or commercial operation directly associated with the landfill; (b) landfills operated in conjunction with other industrial or commercial operations, when the landfill receives wastes generated by the industrial or commercial operation directly associated with the landfill and also receives other wastes, provided that the other wastes received for disposal are generated by a facility that is subject to the same provisions in 40 CFR Subchapter N as the industrial or commercial operation, or that the other wastes received are of similar nature to the wastes generated by the industrial or commercial operation; (c) landfills operated in conjunction with CWT facilities subject to 40 CFR Part 437, so long as the CWT facility commingles the landfill wastewater with other non-landfill wastewater for discharge. A landfill directly associated with a CWT facility is subject to this part if the CWT facility discharges landfill wastewater separately from other CWT wastewater or commingles the wastewater from its landfill only with wastewater from other landfills; or (d) landfills operated in conjunction with other industrial or commercial operations when the landfill receives wastes from public service activities, so long as the company owning the landfill does not receive a fee or other remuneration for the disposal service.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart M – Sector M – Automobile Salvage Yards.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.M.1 Covered Stormwater Discharges. The requirements in Subpart M apply to stormw ater discharges associated with industrial activity from Automobile Salvage Yards as identified by the SIC Code specified under Sector M in Table D-1 of Appendix D of this permit. 8.M.2 Additional Technology-Based Effluent Limits.
8.M.2.1 Spill and Leak Prevention Procedures. (See also Part 2.1.2.4) Drain vehicles intended to be dismantled of all fluids upon arrival at the site (or as soon thereafter as practicable), or employ some other equivalent me ans to prevent spills and leaks.

8.M.2.2 Employee Training. (See also Part 2.1.2.8) If applicable to your facility, address the following areas (at a minimum) in your employee training program: proper handling (collection, storage, and disposal) of oil, used mineral spirits, anti-freeze, mercury switches, and solvents.

8.M.2.3 Management of Runoff. (See also Part 2.1.2.6) Implement appropriate management practices, such as the following: berms or drainage ditches on the property line (to help prevent run-on from neighboring properties); berms for uncovered outdoor storage of oily parts, engine blocks, and above-ground liquid storage; installation of detention ponds; and installation of filtering devices and oil and water separators.
8.M.3 Additional SWPPP Requirements.
8.M.3.1 Drainage Area Site Map. (See also Part 5.2.2) Identify locations used for dismantling, storage, and maintenance of used motor vehi cle parts. Also identify where any of the following may be exposed to precipitation or surface runoff: dismantling areas, parts (e.g., engine blocks, tires, hub caps, batteri es, hoods, mufflers) storage areas, and liquid storage tanks and drums for fuel and other fluids.

8.M.3.2 Potential Pollutant Sources. (See also Part 5.2.3) Assess the potential for the following to contribute pollutants to stormwater discha rges: vehicle storage areas, dismantling areas, parts storage areas (e.g., engine bl ocks, tires, hub caps, batteries, hoods, mufflers), and fueling stations.
8.M.4 Additional Inspection Requirements. (See also Part 3.1) Immediately (or as soon thereafter as practicable) inspect vehicles arri ving at the site for leaks. Inspect quarterly for signs of leakage all equipment containing oily parts, hydraulic fluids, any other types of fluids, or mercury switches. Also, inspect quarterly for signs of leakage all vessels and areas where hazardous material s and general automotive fluids are stored, including, but not limited to, mercury switches, brake fluid, transmission fluid, radiator water, and antifreeze.

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8.M.5 Sector-Specific Benchmarks.
Table 8.M-1 identifies benchmarks that apply to Sector M. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.M-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector M1. Automobile Salvage Yards (SIC 5015) Total Suspended Solids (TSS) 100 mg/L
Total Aluminum 0.75 mg/L
Total Iron 1.0 mg/L Total Lead (freshwater) 2 Total Lead ( saltwater ) 1 Hardness Dependent 0.21 m g /L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Lead (mg/L) 0-24.99 mg/L 0.014 25-49.99 mg/L 0.023 50-74.99 mg/L 0.045 75-99.99 mg/L 0.069 100-124.99 mg/L 0.095 125-149.99 mg/L 0.122 150-174.99 mg/L 0.151 175-199.99 mg/L 0.182 200-224.99 mg/L 0.213 225-249.99 mg/L 0.246 250+ mg/L 0.262

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart N – Sector N – Scrap Recycling and Waste Recycling Facilities.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.N.1 Covered Stormwater Discharges. The requirements in Subpart N apply to stormw ater discharges associated with industrial activity from Scrap Recycling and Waste Recyclin g facilities as identified by the SIC Code specified under Sector N in Table D-1 of Appendix D of the permit. 8.N.2 Limitation on Coverage. Separate permit requirements have been established for recycling facilities that receive, process, and do wholesale distribution of only source-separated recyclable materials primarily from non-industrial and residential sources (i.e ., common consumer products including paper, newspaper, glass, cardboard, plastic containers, and aluminum and tin cans). This includes recycling facilities commonly referred to as material recovery facilities (MRF). See Part 8.N.3.3.

8.N.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) Non-stormwater discharges from turnings containment areas are not covered by this permit (see also Part 8.N.3.2.3). Discharges from containmen t areas in the absence of a storm event are prohibited unless covered by a separate NPDES permit.
8.N.3 Additional Technology-Based Effluent Limits.
8.N.3.1 Scrap and Waste Recycling Facilities (Non-Source Separated, Nonliquid Recyclable Materials). Requirements for facilities that receive, process, and do wholesale distribution of nonliquid recyclable wastes (e .g., ferrous and nonferrous metals, plastics, glass, cardboard, and paper). These facilities may receive both nonrecyclable and recyclable materials. This section is not intended for those facilities that accept recyclables only from primarily non-industrial and residential sources.

8.N.3.1.1 Inbound Recyclable and Waste Material Control Program. Minimize the chance of accepting materials that could be significant sources of pollutants by conducting inspections of inbound recyclables and waste materials. Following are some control measure options: (a) provide information and education to suppliers of scrap and recyclable waste materials on draining and properly disposing of residual flui ds (e.g., from vehicles and equipment engines, radiators and transmissions, oil filled transformers, and individual containers or drums) and removal of mercury switches from vehicles before delivery to your facility; (b) establish procedures to minimize the potential of any residual fluids from coming into contact with precipitation or runoff; (c) establish procedures for accepting scrap lead-acid batteries (additional requirements for the handling, storage, and disposal or recycling of batteries are contained in the scrap lead-acid battery program provisions in Part 8.N.3.2.6); (d) provide training target ed for those personnel engaged in the inspection and acceptance of inbound recyclable materials; and (e) establish procedures to ensure that liquid wastes, including used oil, are stored in materially compatible and non-leaking containers and are disposed of or

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recycled in accordance with the Resource Conservation and Recovery Act (RCRA).

8.N.3.1.2 Scrap and Waste Material Stockpiles and Storage (Outdoor). Minimize contact of stormwater runoff with stoc kpiled materials, processed materials, and nonrecyclable wastes. Following ar e some control measure options: (a) permanent or semi-permanent covers; (b) sediment traps, vegetated swales and strips, catch basin filters, and sand filters to facilitate settling or filtering of pollutants; (c) dikes, berms, containment trenches, culverts, and surface grading to divert runoff from storage areas; (d) silt fencing; and (e) oil and water separators, sumps, and dry ab sorbents for areas where potential sources of residual fluids are stockpiled (e.g., automobile engine storage areas).

8.N.3.1.3 Stockpiling of Turnings Exposed to Cutting Fluids (Outdoor Storage). Minimize contact of surface runoff with residual cutting fluids by: (a) storing all turnings exposed to cutting fluids under some form of permanent or semi-permanent cover, or (b) establishing dedicated containment areas for all turnings that have been exposed to cutting fluids. Any containment areas must be constructed of concrete, asphalt, or other equivalent types of impermeable material and include a barrier (e.g., berms, curbing, elevated pads) to prevent contact with stormwater run-on. Stormwater runoff from these areas can be discharged, provided that any runoff is first collected and treated by an oil and water separator or its equivalent. You must regularly maintain the oil and water separator (or its equivalent ) and properly dispose of or recycle collected residual fluids.

8.N.3.1.4 Scrap and Waste Material Stockpiles and Storage (Covered or Indoor Storage). Minimize contact of residual liquids and particulate matter from materials stored indoors or under cove r with surface runoff. Following are some control measure options: (a) good housekeeping measures, including the use of dry absorbents or wet vacuum ing to contain, dispose of, or recycle residual liquids originating from recyclable containers, or mercury spill kits for spills from storage of mercury switches; (b) not allowing washwater from tipping floors or other processing areas to discharge to the storm sewer system; and (c) disconnecting or sealing off all floor drains connected to the storm sewer system.

8.N.3.1.5 Scrap and Recyclable Wa ste Processing Areas. Minimize surface runoff from coming in contact with scrap processing equipment. Pay attention to operations that generate visible am ounts of particulate residue (e.g., shredding) to minimize the contact of accumulated particulate matter and residual fluids with runoff (i.e., through good housekeeping, preventive maintenance, etc.). Following are some control measure options: (a) regularly inspect equipment for spills or leaks and malfunctioning, worn, or corroded parts or equipment; (b) establish a preventive maintenance program for processing equipment; (c) use dry-abso rbents or other cleanup practices to collect and dispose of or recycle spilled or leaking fluids or use mercury spill kits for spills from storage of mercury switches; (d) on unattended hydraulicreservoirs over 150 gallons in capacity, install protection devices such as lowlevel alarms or equivalent devices, or secondary containment that can hold the entire volume of the reservoir; (e) containment or diversion structures such as dikes, berms, culverts, trenches, el evated concrete pads, and grading to

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minimize contact of stormwater runoff with outdoor processing equipment orstored materials; (f) oil and water separators or sumps; (g) permanent or semipermanent covers in processing areas where there are residual fluids and grease; (h) retention or detention ponds or basins; sediment traps, and vegetated swales or strips (for pollutant settling and filtration); (i) catch basin filters or sand filters.

8.N.3.1.6 Scrap Lead-Acid Battery Program. Properly handle, store, and dispose of scrap lead-acid batteries. Following are some control measure options (a) segregate scrap lead-acid batteries from other scrap materials; (b) properly handle, store, and dispose of cracked or broken batteries; (c) collect and dispose of leaking lead-acid battery fluid; (d) minimize or eliminate (if possible) exposure of scrap lead-acid batteries to precipitation or runoff; and (e) provide employee training for the management of scrap batteries.

8.N.3.1.7 Spill Prevention and Response Procedures. (See also Part 2.1.2.4)Install alarms and/or pump shutoff systems on outdoor equipment with hydraulic reservoirs exceeding 150 gallons in the event of a line break. Alternatively, a secondary containment system capable of holding the entire contents of the reservoir plus room for precipitation can be used. Use a mercury spill kit for any release of mercury from switches, anti-lock brak e systems, and switch storage areas.

8.N.3.1.8 Supplier Notification Program. As appropriate, notify major suppliers which scrap materials will not be accepted at the facility or will be accepted only under certain conditions.
8.N.3.2 Waste Recycling Facilities (Liquid Recyclable Materials).

8.N.3.2.1 Waste Material Storage (Indoor). Minimize or eliminate contact between residual liquids from waste materials stored indoors and from surface runoff. The plan may refer to applicable portions of other existing plans, such as Spill Prevention, Control, and Countermeasure (SPCC) plans required under 40 CFR Part 112. Following are some control measure options (a) procedures for material handling (including labeling and marking); (b) clean up spills and leaks with dry absorbent materials, a wet vacuum system; (c) appropriate containment structures (trenching, curbing, gutters, etc.); and (d) a drainage system, including appurtenances (e.g., pu mps or ejectors, manually operated valves), to handle discharges from di ked or bermed areas. Drainage should be discharged to an appropriate treatment facility or sanitary sewer system, or otherwise disposed of properly. Th ese discharges may require coverage under a separate NPDES wastewater permit or industrial user permit under the pretreatment program.

8.N.3.2.2 Waste Material Storage (Outdoor). Minimize contact between stored residual liquids and precipitation or runoff. The plan may refer to applicable portions of other existing plans, such as SPCC plans required under 40 CFR Part 112. Discharges of precipitation from containment areas containing used oil must also be in accordance with applicable sections of 40 CFR Part 112. Following are some control measure options (a) appropriate containment structures (e.g., dikes, berms, curbing, pits) to store the volume of the largest tank, with sufficient extra capacity for precipitation; (b) drainage control and other diversionary structures; (c) corrosion pr otection and/or leak detection systems for storage tanks; and (d) dry-absorbent materials or a wet vacuum system to collect spills.

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8.N.3.2.3 Trucks and Rail Car Waste Transfer Areas. Minimize pollutants in discharges from truck and rail car loading and unloading areas. Include measures to clean up minor spills and leaks resulting from the transfer of liquid wastes. Following are two control measure options: (a) containment and diversionarystructures to minimize contact with precipitation or runoff, and (b) dry cleanup methods, wet vacuuming, roof coverings, or runoff controls.

8.N.3.3 Recycling Facilities (Source-Separated Materials). The following identifies considerations for facilities that receive only source-separated recyclables, primarily from non-industrial and residential sources.

8.N.3.3.1 Inbound Recyclable Material Control. Minimize the chance of accepting nonrecyclables (e.g., hazardous materials) that could be a significant source of pollutants by conducting inspections of inbound materials. Following are some control measure options: (a) providing information and educationmeasures to inform suppliers of recyclables about acceptable and nonacceptable materials, (b) training drivers responsible for pickup of recycled material, (c) clearly marking public drop-off containers regarding which materials can be accepted, (d) rejecting nonrecyclable wastes or household hazardous wastes at the source, and (e) establishing procedures for handling and disposal of nonrecyclable material.

8.N.3.3.2 Outdoor Storage. Minimize exposure of recyclables to precipitation and runoff. Use good housekeeping measures to prevent accumulation of particulate matter and fluids, particularly in high traffic areas. Following are some control measure options (a) provide totally enclosed drop-off containers for the public; (b) install a sump and pump with each container pit and treat or discharge collected fluids to a sanitary sewer system; (c) provide dikes and curbs for secondary containment (e.g., around bales of recyclable waste paper); (d) divert surface water runoff away from outside material storage areas; (e) provide covers over cont ainment bins, dumpsters, and roll-off boxes; and (f) store the equivalent of on e day’s volume of recyclable material indoors.

8.N.3.3.3 Indoor Storage and Material Processing. Minimize the release of pollutants from indoor storage and processing areas. Following are some control measure options (a) schedule routine good housekeeping measures for all storage and processing areas, (b) prohibit tipping floor washwater from draining to the storm sewer system, and (c) provide employee training on pollution prevention practices.

8.N.3.3.4 Vehicle and Equipment Maintenance. Following are some control measure options for areas where ve hicle and equipment maintenance occur outdoors (a) prohibit vehicle and equipment wash water from discharging to the storm sewer system, (b) minimize or e liminate outdoor maintenance areas whenever possible, (c) establish spill prevention and clean-up procedures in fueling areas, (d) avoid topping off fuel tanks, (e) divert runoff from fueling areas, (f) store lubricants and hydraulic fluids indoors, and (g) provide employee training on proper handling and storage of hydraulic fluids and lubricants.

8.N.4 Additional SWPPP Requirements.
8.N.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP the locations of any of the following activities or sources that may be exposed to precipitation or

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surface runoff: scrap and waste material storage, outdoor scrap and waste processing equipment; and containment areas for turnings exposed to cutting fluids.

8.N.4.2 Maintenance Schedules/Procedures for Collection, Handling, and Disposal or Recycling of Residual Fluids at Scrap and Waste Recycling Facilities. If you are subject to Part 8.N.3.1.3, your SWPPP must identify any applicable maintenance schedule and the procedures to collect, handle, and dispose of or recycle residual fluids.
8.N.5 Additional Inspection Requirements.
8.N.5.1 Inspections for Waste Recycling Facilities. The inspections must be performed quarterly, pursuant to Part 3.1, and include, at a minimum, all areas where waste is generated, received, stored, treated, or disposed of and that are exposed to ei ther precipitation or stormwater runoff.

8.N.6 Sector-Specific Benchmarks. Table 8.N-1 identifies benchmarks that apply to Sector N. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.N-1.

Subsector (You may be subject to requirements for more than one sector/subsector ) Parameter Benchmark Monitoring Concentration

Subsector N1 . Scrap Recycling and Waste Recycling Facilities except those only receiving source-separaterecyclable materials primarily from nonindustrial and residential sources (SIC 5093) Chemical Oxygen Demand (COD) 120 mg/L

Total Suspended Solids (TSS) 100 mg/L

Total Recoverable Aluminum 0.75 mg/L

Total Copper (freshwater) 2 Total Copper (saltwater) 1 Hardness Dependent 0.0048 mg/L
Total Recoverable Iron 1.0 mg/L

Total Lead (freshwater) 2 Total Lead ( saltwater ) 1 Hardness Dependent 0.21 m g /L Total Zinc (freshwater) 2 Total Zinc (saltwater) 1 Hardness Dependent 0.09 mg/L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

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Freshwater Hardness Range Copper (mg/L) Lead (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.0038 0.014 0.04 25-49.99 mg/L 0.0056 0.023 0.05 50-74.99 mg/L 0.0090 0.045 0.08 75-99.99 mg/L 0.0123 0.069 0.11 100-124.99 mg/L 0.0156 0.095 0.13 125-149.99 mg/L 0.0189 0.122 0.16 150-174.99 mg/L 0.0221 0.151 0.18 175-199.99 mg/L 0.0253 0.182 0.20 200-224.99 mg/L 0.0285 0.213 0.23 225-249.99 mg/L 0.0316 0.246 0.25 250+ mg/L 0.0332 0.262 0.26

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart O – Sector O – Steam Elec tric Generating Facilities.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.O.1 Covered Stormwater Discharges. The requirements in Subpart O apply to stormw ater discharges associated with industrial activity from Steam Electric Power Generating Facilities as identified by the Activity Code specified under Sector O in Table D-1 of Appendix D. 8.O.2 Industrial Activities Covered by Sector O. This permit authorizes stormwater discharges from the following industrial activities at Sector O facilities: 8.O.2.1 steam electric power generation using co al, natural gas, oil, nuclear energy, etc., to produce a steam source, including coal handling areas (does not include geothermal power);
8.O.2.2 coal pile runoff, including effluent limitations established by 40 CFR Part 423; and
8.O.2.3 dual fuel facilities that could employ a steam boiler.
8.O.3 Limitations on Coverage.
8.O.3.1 Prohibition of Non-Stormwater Discharges. Non-stormwater discharges subject to effluent limitations guidelines are not covered by this permit.

8.O.3.2 Prohibition of Stormwater Discharges. Stormwater discharges from the following are not covered by this permit:
8.O.3.2.1 ancillary facilities (e.g., fleet centers and substations) that are not contiguous to a stream electric power generating facility;
8.O.3.2.2 gas turbine facilities (providing the facility is not a dual-fuel facility that includes a steam boiler), and combined-cycle facilities where no supplemental fuel oil is burned (and the facility is not a dual-fuel facility that includes a steam boiler); and
8.O.3.2.3 cogeneration (combined heat and power) facilities utilizing a gas turbine.
8.O.4 Additional Technology-Based Effluent Limits. The following good housekeeping measures are required in addition to Part 2.1.2.2:
8.O.4.1 Fugitive Dust Emissions. Minimize fugitive dust emissions from coal handling areas. To minimize the tracking of coal dust offsite, implement appropriate procedures such as installing specially designed tires or washing vehicles in a designated area before they leave the site and controlling the wash water.

8.O.4.2 Delivery Vehicles. Minimize contamination of stormwater runoff from delivery vehicles arriving at the plant site. Implement appropri ate procedures to inspect delivery vehicles arriving at the plant site and ensure overall integrity of the body or container and procedures to deal with leakage or spillage from vehicles or containers.

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8.O.4.3 Fuel Oil Unloading Areas. Minimize contamination of precipitation or surface runoff from fuel oil unloading areas. Use containment curbs in unloading areas where practicable. In addition, have personnel familiar with spill prevention and response procedures present during deliveries to ensure that an y leaks or spills are immediately contained and cleaned up, and use spill and overflow protection devices (e.g., drip pans, drip diapers, or other containment devices placed beneath fuel oil connectors to contain potential spillage during deliveries or from leaks at the connectors).

8.O.4.4 Chemical Loading and Unloading. Minimize contamination of precipitation or surface runoff from chemical loading and unloading areas. Use containment curbs at chemical loading and unloading areas to contain spills, where practicable. In addition, have personnel familiar with spill prevention and response procedures present during deliveries to ensure that any leaks or spills are immediately contained and cleaned up, and, where practicable, load and unload in covered areas and store chemicals indoors.

8.O.4.5 Miscellaneous Loading and Unloading Areas. Minimize contamination of precipitation or surface runoff from loading and unloading areas. Cover the loading area; grade, curb, or berm around the loading area to divert run-on; locate the loading and unloading equipment and vehicles so that leaks are contained in existing containment and flow diversion systems; or use eq uivalent procedures to minimize the contamination of precipitation or surface runoff from loading and unloading areas.

8.O.4.6 Liquid Storage Tanks. Minimize contamination of surface runoff from above-ground liquid storage tanks. Use protective guards around tanks, containment curbs, spill and overflow protection, dry cleanup methods, or equivalent measures.

8.O.4.7 Large Bulk Fuel Storage Tanks. Minimize contamination of surface runoff from large bulk fuel storage tanks. Use containment berms (o r their equivalent). You must also comply with applicable State and Federal laws, including Spill Prevention, Control and Countermeasure (SPCC) Plan requirements.

8.O.4.8 Spill Reduction Measures. Minimize the potential for an oil or chemical spill, or reference the appropriate part of your SPCC plan. Visually inspect as part of your routine facility inspection the structural integrity of all above-ground tanks, pipelines, pumps, and related equipment that may be exposed to stormwater, and make any necessary repairs immediately.

8.O.4.9 Oil-Bearing Equipment in Switchyards. Minimize contamination of surface runoff from oilbearing equipment in switchyard areas. Use level grades and gravel surfaces to retard flows and limit the spread of spills, or collecting runoff in perimeter ditches.

8.O.4.10 Residue-Hauling Vehicles. Inspect all residue-hauling vehicl es for proper covering over the load, adequate gate sealing, and overall integrity of the container body. Repair vehicles without load covering or adequate gate sealing, or with leaking containers or beds.

8.O.4.11 Ash Loading Areas. Reduce or control the tracking of ash and residue from ash loading areas. Clear the ash building floor and immediately adjacent roadways of spillage, debris, and excess water before departure of each loaded vehicle.

8.O.4.12 Areas Adjacent to Disposal Ponds or Landfills. Minimize contamination of surface runoff from areas adjacent to disposal ponds or landfills. Reduce ash residue that may be tracked on to access roads traveled by residue handling vehicles, and reduce ash residue on exit roads leading into and out of residue handling areas.

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8.O.4.13 Landfills, Scrap yards, Surface Impoundments, Open Dumps, General Refuse Sites. Minimize the potential for contamination of runoff from these areas.
8.O.5 Additional SWPPP Requirements.
8.O.5.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP the locations of any of the following activities or sources that may be exposed to precipitation orsurface runoff: storage tanks, scrap yards, and general refuse areas; short- and longterm storage of general materials (including but not limited to supplies, construction materials, paint equipment, oils, fuels, used and unused solvents, cleaning materials, paint, water treatment chemicals, fertilizer, and pesticides); landfills and construction sites; and stock pile areas (e.g., coal or limestone piles).

8.O.5.2 Documentation of Good Housekeeping Measures. You must document in your SWPPP the good housekeeping measures implemented to meet the effluent limits in Part 8.O.4.
8.O.6 Additional Inspection Requirements. As part of your inspection, inspect the following areas monthly: coal handling areas, loading or unloading areas, switchyards, fueling areas, bulk storage areas, ash handling areas, areas adjacent to disposal ponds and landfills, maintenance areas, liquid storage tanks, and long term and short term material storage areas.
8.O.7 Sector-Specific Benchmarks Table 8.O-1 identifies benchmarks that apply to Sector O. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.O-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration
Subsector O1 . Steam Electric Generating Facilities (Industrial Activity Code “SE” ) Total Iron 1.0 mg/L

8.O.8 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.)

Table 8.O-2 identifies effluent lim its that apply to the industrial activities described below. Compliance with these effluent limits is to be determined based on discharges from these industrial activities independent of commingling with any other wastestreams that may be covered under this permit.

Table 8.O-2 1 Industrial Activity Parameter Effluent Limit Discharges from coal storage piles at Steam Electric Generating Facilities TSS 50 mg/l 2 pH 6.0 min - 9.0 max

1 Monitor annually.

2 If your facility is designed, constructed, and operated to treat the volume of coal pile runoff that is associated with a 10-year, 24-hour rainfall event, any untreated overflow of coal pile runoff from the treatment unit is not subject to the 50 mg/L limitation for total suspended solids.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart P – Sector P – Land Transportation and Warehousing.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.P.1 Covered Stormwater Discharges. The requirements in Subpart P apply to stormw ater discharges associ ated with industrial activity from Land Transportation and Warehousing facilities as identified by the SIC Codes specified under Sector P in Table D-1 of Appendix D of the permit. 8.P.2 Limitation on Coverage
8.P.2.1 Prohibited Discharges (see also Parts 1.1.4 and 8.P.3.1.4) This permit does not authorize the discharge of vehicle/eq uipment/surface washwater, including tank cleaning operations. Such discharges must be au thorized under a separate NPDES permit, discharged to a sanitary sewer in accordan ce with applicable industrial pretreatment requirements, or recycled on-site.
8.P.3 Additional Technology-Based Effluent Limits.
8.P.3.1 Good Housekeeping Measures. (See also Part 2.1.2.2) In addition to the Good Housekeeping requirements in Part 2.1.2. 2, you must do the following. Recommended control measures are discussed as indicated:

8.P.3.1.1 Vehicle and Equipment Storage Areas. Minimize the potential for stormwater exposure to leaky or leak-prone vehicles/equipment awaiting maintenance. Implement appropriate control measures, such as the following (or other equivalent measures): use of drip pans under vehicles/equipment, indoor storage of vehicles and equipment, installation of berms or dikes, use of absorbents, roofing or covering storage areas, and cleaning pavement surfaces to remove oil and grease.

8.P.3.1.2 Fueling Areas. Minimize contamination of stormwater runoff from fueling areas. Implement appropriate control measures , such as the following (or other equivalent measures): Covering the fueling area; using spill/overflow protection and cleanup equipment; minimizing stormwater run-on/runoff to the fueling area; using dry cleanup methods; and treating and/or recycling collected stormwater runoff.

8.P.3.1.3 Material Storage Areas. Maintain all material storage vessels (e.g., for used oil/oil filters, spent solvents, paint wastes, hydraulic fluids) to prevent contamination of stormwater and plainly label them (e.g., “Used Oil,” “Spent Solvents,” etc.). Consider the following (or other equivalent measures): storing the materials indoors; installing berms/dikes around the areas; minimizing runoff of stormwater to the areas; us ing dry cleanup methods; and treating and/or recycling collected stormwater runoff.

8.P.3.1.4 Vehicle and Equipment Cleaning Areas. Minimize contamination of stormwater runoff from all areas us ed for vehicle/equipment cleaning. Implement appropriate control measures , such as the following (or other equivalent measures): performing all cleaning operations indoors; covering

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the cleaning operation, ensuring that all washwater drains to a proper collection system (i.e., not the stormwater drainage system); treating and/or recycling collected washwater, or other equivalent measures.

8.P.3.1.5 Vehicle and Equipment Maintenance Areas. Minimize contamination of stormwater runoff from all areas used for vehicle/equipment maintenance. Implement appropriate control measures , such as the following (or other equivalent measures): performing maintenance activities indoors; using drip pans; keeping an organized inventory of materials used in the shop; draining all parts of fluid prior to disposal; prohibiting wet clean up practices if these practices would result in the discharge of pollutants to stormwater drainage systems; using dry cleanup methods; treating and/or recycling collected stormwater runoff, minimizing run on/runoff of stormwater to maintenance

areas.

8.P.3.1.6 Locomotive Sanding (Loading Sand for Traction) Areas. Implement appropriate control measures, such as the following (or other equivalent measures): covering sanding areas; minimizing stormwater run on/runoff; or appropriate sediment removal practices to minimize the offsite transport of sanding material by stormwater.

8.P.3.2 Employee Training. (See also Part 2.1.2.8) Train personnel at least once a year and address the following activities, as applicable: used oil and spent solvent management; fueling procedures; general good hous ekeeping practices; proper painting procedures; and used battery management.
8.P.4 Additional SWPPP Requirements.
8.P.4.1 Drainage Area Site Map. (See also Part 5.2.2) Identify in the SWPPP the following areas of the facility and indicate whether acti vities occurring there may be exposed to precipitation/surface runoff: Fueling stations; vehicle/equipment maintenance or cleaning areas; storage areas for vehicle/ equipment with actual or potential fluid leaks; loading/unloading areas; areas where treatment, storage or disposal of wastes occur; liquid storage tanks; processing areas; and storage areas.

8.P.4.2 Potential Pollutant Sources. (See also Part 5.2.3) Assess the potential for the following activities and facility areas to contribute pollutants to stormwater discharges: Onsite waste storage or disposal; dirt /gravel parking areas for vehicles awaiting maintenance; illicit plumbing connections between shop floor drains and the stormwater conveyance system(s); and fueling areas. Describe these activities in the SWPPP.

8.P.4.3 Description of Good Housekeeping Measures. You must document in your SWPPP the good housekeeping measures you implement consistent with Part 8.P.3.

8.P.4.4 Vehicle and Equipment Washwater Requirements. If applicable, attach to or reference in your SWPPP, a copy of the NPDES permit issued for vehicle/equipment washwater or, if an NPDES permit has not been issued, a copy of the pending application. If an industrial user permit is issued under a local pretreatment program, attach a copy to your SWPPP. In any case, implement all non-stormwater discharge permit conditions or pretreatment conditions in your SWPPP. If washwater is handled in another manner (e.g., hauled offsite), describe the disposal method and attach all pertinent documentation/information (e.g., frequency, volume, destination, etc.) in the plan.

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8.P.5 Additional Insp ection Requirements. (See also Part 3.1) Inspect all the following areas/activities: storage area s for vehicles/equipment awaiting maintenance, fueling areas, indoor and outdoor vehicle/equipm ent maintenance areas, material storage areas, vehicle/equipment cleaning areas and loading/unloading areas.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart Q – Sector Q – Water Transportation.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.Q.1 Covered Stormwater Discharges. The requirements in Subpart Q apply to stormw ater discharges associated with industrial activity from Water Transportation facilities as identified by the SIC Codes specified under Sector Q in Table D-1 of Appendix D of the permit. 8.Q.2 Limitations on Coverage.
8.Q.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) Not covered by this permit: bilge and ballast water, sanitary wastes, pressure wash water, and cooling water originating from vessels.
8.Q.3 Additional Technology-Based Effluent Limits.
8.Q.3.1 Good Housekeeping Measures. You must implement the following good housekeeping measures in addition to the re quirements of Part 2.1.2.2:

8.Q.3.1.1 Pressure Washing Area. If pressure washing is used to remove marine growth from vessels, the discharge water must be permitted by a separate NPDES permit. Collect or contain the discharges from the pressures washing area so that they are not co-mingled with stor mwater discharges authorized by this permit.

8.Q.3.1.2 Blasting and Painting Area. Minimize the potential for spent abrasives, paint chips, and overspray to discharge into receiving waters or the storm sewer systems. Contain all blasting and painting activities or use other measures to minimize the discharge of contaminants (e.g., hanging plastic barriers or tarpaulins during blasting or painting operations to contain debris). At least once per month, you must clean stormwater conveyances of deposits of abrasive blasting debris and paint chips.

8.Q.3.1.3 Material Storage Areas. Store and plainly label all containerized materials (e.g., fuels, paints, solvents, waste oil, antifreeze, batteries) in a protected, secure location away from drains. Minimize the contamination of precipitation or surface runoff from the storage area s. Specify which materials are stored indoors, and containment or enclosure or use other measures for those stored outdoors. If abrasive blasting is performed, discuss the storage and disposal of spent abrasive materials generated at the facility. Implement an inventory control plan to limit the presence of potentially hazardous materials onsite.

8.Q.3.1.4 Engine Maintenance and Repair Areas. Minimize the contamination of precipitation or surface runoff from all areas used for engine maintenance and repair. Implement appropriate contro l measures, such as the following (or their equivalents): performing all maintenance activities indoors, maintaining an organized inventory of materials used in the shop, draining all parts of fluid prior to disposal, prohibiting the practice of hosing down the shop floor, using

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dry cleanup methods, and treating and/or recycling stormwater runoff collected from the maintenance area.

8.Q.3.1.5 Material Handling Area. Minimize the contamination of precipitation or surface runoff from material handling operations and areas (e.g., fueling, paint and solvent mixing, disposal of process wastewater streams from vessels). Implement appropriate control measures, such as the following (or their equivalents): covering fueling areas, using spill and overflow protection, mixing paints and solvents in a designat ed area (preferably indoors or under a shed), and minimizing runoff of stor mwater to material handling areas.

8.Q.3.1.6 Drydock Activities. Routinely maintain and clean the drydock to minimize pollutants in stormwater runoff. Addres s the cleaning of accessible areas of the drydock prior to flooding, and final cleanup following removal of the vessel and raising the dock. Include proc edures for cleaning up oil, grease, and fuel spills occurring on the drydock. Implement appropriate control measures, such as the following (or th eir equivalents): sweeping rather than hosing off debris and spent blasting material from accessible areas of the drydock prior to flooding and making absorbent materials and oil containment booms readily available to clean up or contain any spills.

8.Q.3.2 Employee Training. (See also Part 2.1.2.8) As part of your employee training program, address, at a minimum, the following activities (as applicable): used oil management, spent solvent management, disposal of spent abrasives, disposal of vessel wastewaters, spill prevention and control, fueling procedures, general good housekeeping practices, painting and blasting procedures, and used battery management.

8.Q.3.3 Preventive Maintenance. (See also Part 2.1.2.3) As part of your preventive maintenance program, perform timely inspection and maintenance of stormwater management devices (e.g., cleaning oil and water separators and sediment traps to ensure that spent abrasives, paint chips, and solids will be intercepted and retained prior to entering the storm drainage system), as well as inspecting and testing facility equipment and systems to uncover conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters.
8.Q.4 Additional SWPPP Requirements.
8.Q.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: fueling; engine maintenance and repair; vessel maintenance and repair; pressure washing; painting; sanding; blasting; welding; metal fabrication; loading and unloading areas; locations used for the treatment, storage, or dispos al of wastes; liquid storage tanks; liquid storage areas (e.g., paint, solvents, resins); and material storage areas (e.g., blasting media, aluminum, steel, scrap iron).

8.Q.4.2 Summary of Potential Pollutant Sources. (See also Part 5.2.3) Document in the SWPPP the following additional sources and activities that have potential pollutants associated with them: outdoor manufacturing or processing activities (e.g., welding, metal fabricating) and significant dust or particulate generating processes (e.g., abrasive blasting, sanding, and painting.)

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8.Q.5 Additional Inspection Requirements. (See also Part 3.1) Include the following in all quarterly routine facility inspections: pressure washing area; blasting, sanding, and pa inting areas; material storage areas; engine maintenance and repair areas; material handling areas; drydock area; and general yard area. 8.Q.6 Sector-Specific Benchmarks. Table 8.Q-1 identifies benchmarks that apply to Sector Q. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.Q-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector Q1 . Water Transportation Facilities (SIC 4412-4499) Total Aluminum 0.75 m g /L Total Iron 1.0 m g /L Total Lead (freshwater) 2

Total Lead ( saltwater ) 1 Hardness Dependent 0.21 mg/L

Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 mg/L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Lead (mg/L) Zinc (mg/L) 0-24.99 mg/L 0.014 0.04 25-49.99 mg/L 0.023 0.05 50-74.99 mg/L 0.045 0.08 75-99.99 mg/L 0.069 0.11 100-124.99 mg/L 0.095 0.13 125-149.99 mg/L 0.122 0.16 150-174.99 mg/L 0.151 0.18 175-199.99 mg/L 0.182 0.20 200-224.99 mg/L 0.213 0.23 225-249.99 mg/L 0.246 0.25 250+ mg/L 0.262 0.26

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart R – Sector R – Ship and Boat Building and Repair Yards.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.R.1 Covered Stormwater Discharges. The requirements in Subpart R apply to stormw ater discharges associated with industrial activity from Ship and Boat Building and Repair Yards as identified by the SIC Codes specified under Sector R in Table D-1 of Appendix D of the permit. 8.R.2 Limitations on Coverage.
8.R.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) Discharges containing bilge and ballast water, sanitary wastes, pressure wash water, and cooling water originating from vessels are not covered by this permit.
8.R.3 Additional Technology-Based Effluent Limits.
8.R.3.1 Good Housekeeping Measures. (See also Part 2.1.2.2)

8.R.3.1.1 Pressure Washing Area. If pressure washing is used to remove marine growth from vessels, the discharged water must be permitted as a process wastewater by a separate NPDES permit.

8.R.3.1.2 Blasting and Painting Area. Minimize the potential for spent abrasives, paint chips, and overspray to discharging into the receiving water or the storm sewer systems. Contain all blasting and painting activities, or use other measures to prevent the discharge of th e contaminants (e.g., hanging plastic barriers or tarpaulins during blasting or painting operations to contain debris). When necessary, regularly clean stormwater conveyances of deposits of abrasive blasting debris and paint chips.

8.R.3.1.3 Material Storage Areas. Store and plainly label all containerized materials (e.g., fuels, paints, solvents, waste oil, antifreeze, batteries) in a protected, secure location away from drains. Minimize the contamination of precipitation or surface runoff from the storage areas. If abrasive blasting is performed, discuss the storage and disposal of spen t abrasive materials generated at the facility. Implement an inventory control plan to limit the presence of potentially hazardous materials onsite.

8.R.3.1.4 Engine Maintenance and Repair Areas. Minimize the contamination of precipitation or surface runoff from all areas used for engine maintenance and repair. Implement appropriate contro l measures, such as the following (or their equivalents): performing all maintenance activities indoors, maintaining an organized inventory of materials used in the shop, draining all parts of fluid prior to disposal, prohibiting the practice of hosing down the shop floor, using dry cleanup methods, and treating and/or recycling stormwater runoff collected from the maintenance area.

8.R.3.1.5 Material Handling Area. Minimize the contamination of precipitation or surface runoff from material handling operations and areas (e.g., fueling,

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paint and solvent mixing, disposal of process wastewater streams from vessels). Implement appropriate control measures, such as the following (or their equivalents): covering fueling areas, using spill and overflow protection, mixing paints and solvents in a designat ed area (preferably indoors or under a shed), and minimizing stormwater ru n-on to material handling areas.

8.R.3.1.6 Drydock Activities. Routinely maintain and clean the drydock to minimize pollutants in stormwater runoff. Clean accessible areas of the drydock prior to flooding and final cleanup following removal of the vessel and raising the dock. Include procedures for cleaning up oil, grease, or fuel spills occurring on the drydock. Implement appropriate cont rol measures, such as the following (or their equivalents): sweeping rather than hosing off debris and spent blasting material from accessible areas of the drydock prior to flooding, and having absorbent materials and oil containment booms readily available to clean up and contain any spills.

8.R.3.2 Employee Training. (See also Part 2.1.2.8) As part of your employee training program, address, at a minimum, the following activities (as applicable): used oil management, spent solvent management , disposal of spent abrasives, disposal of vessel wastewaters, spill prevention and control, fueling procedures, general good housekeeping practices, painting and blasting procedures, and used battery management.

8.R.3.4 Preventive Maintenance. (See also Part 2.1.2.3) As part of your preventive maintenance program, perform timely inspection and maintenance of stormwater management devices (e.g., cleaning oil an d water separators and sediment traps to ensure that spent abrasives, paint chips, and solids will be intercepted and retained prior to entering the storm drainage system), as well as inspecting and testing facility equipment and systems to uncover conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters.
8.R.4 Additional SWPPP Requirements.
8.R.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: fueling; engine maintenance or repair; vessel maintenance or repair; pressure washing; painting; sanding; blasting; welding; metal fabrication; loading and unloading areas; treatment, storage, and waste disposal ar eas; liquid storage tanks; liquid storage areas (e.g., paint, solvents, resins); and material storage area s (e.g., blasting media, aluminum, steel, scrap iron).

8.R.4.2 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following additional sources and activities that have potential pollutants associated with them (if applicable): outdoor manufacturing or processing activities (e.g., welding, metal fabricating) and significant dust or particulate generating processes (e.g., abrasive blasting, sanding, and painting).

8.R.4.3 Documentation of Good Housekeeping Measures. Document in your SWPPP any good housekeeping measures implemented to meet the effluent limits in Part 8.R.3.

8.R.4.3.1 Blasting and Painting Areas. Document in the SWPPP any standard operating practices relating to blasting and painting (e.g., prohibiting uncontained blasting and painting over open water or prohibiting blasting and painting during windy conditions, which can render containment ineffective).

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8.R.4.3.2 Storage Areas. Specify in your SWPPP which materials are stored indoors, and contain or enclose or use other measures for those stored outdoors.
8.R.5 Additional Inspection Requirements. (See also Part 3.1) Include the following in all quarterly routine facility inspections: pressure washing area; blasting, sanding, and pa inting areas; material storage areas; engine maintenance and repair areas; material handling areas; drydock area; and general yard area.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart S – Sector S – Air Transportation.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.S.1 Covered Stormwater Discharges. The requirements in Subpart S apply to stormw ater discharges associated with industrial activity from Air Transportation facilities identified by the SIC Codes specified under Sector S in Table D-1 of Appendix D of the permit. 8.S.2 Limitation on Coverage
8.S.2.1 Limitations on Coverage. This permit authorizes stormwat er discharges from only those portions of the air transportation facility that are involved in vehicle maintenance (including vehicle rehabilitation, mechanical repairs, painting, fueling and lubrication), equipment cleaning operatio ns or deicing operations.

Note: “deicing” will generally be used to imply both deicing (removing frost, snow or ice) and anti-icing (preventing accumulation of frost, snow or ice) activities, unless specific mention is made regarding anti-icing and/or deicing activities.

8.S.2.2 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4 and Part 8.S.3) This permit does not authorize the discharge of aircra ft, ground vehicle, runway and equipment washwaters; nor the dry weather discharge of deicing chemicals. Su ch discharges must be covered by separate NPDES permit(s). Note that a discharge resulting from snowmelt is not a dry weather discharge.
8.S.3 Additional Technology-Based Effluent Limits.
8.S.3.1 Good Housekeeping Measures. (See also Part 2.1.2.2)
8.S.3.1.1 Aircraft, Ground Vehicle and Eq uipment Maintenance Areas. Minimize the contamination of stormwater runoff from all areas used for aircraft, ground vehicle and equipment maintenance (including the maintenance conducted on the terminal apron and in dedicated hangers). Implement appropriate control measures, such as the following practices (or their equivalents): performing maintenance activities indoors; maintaining an organized inventory of material used in the maintenance areas; draining all parts of fluids prior to disposal; prohibiting the practice of hosing down the apron or hanger floor; using dry cleanup methods; and collecting the stormwater runoff from the maintenance area and providing treatment or recycling.
8.S.3.1.2 Aircraft, Ground Vehicle and Eq uipment Cleaning Areas. (See also Part 8.S.3.6) Clearly demarcate these areas on the ground using signage or other appropriate means. Minimize the contamination of stormwater runoff from cleaning areas.
8.S.3.1.3 Aircraft, Ground Vehicle and Equi pment Storage Areas. Store all aircraft, ground vehicles and equipment awaiti ng maintenance in designated areas only and minimize the contamination of stormwater runoff from these storage

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areas. Implement appropriate contro l measures, such as the following, including any BMPs (or their equivalents) : storing aircraft an d ground vehicles indoors; using drip pans for the collection of fluid leaks; and perimeter drains, dikes or berms surrounding the storage areas.
8.S.3.1.4 Material Storage Areas. Maintain the vessels of stored materials (e.g., used oils, hydraulic fluids, spent solvents, and waste aircraft fuel) in good condition, to prevent or minimize contamination of stormwater. Also plainly label the vessels (e.g., “used oil,” “Contaminated Jet A,” etc.). Minimize contamination of precipitation/runoff fr om these areas. Implement appropriate control measures, such as the following (or their equivalents): storing materials indoors; storing waste materials in a centralized location; and installing berms/dikes around storage areas.
8.S.3.1.5 Airport Fuel System and Fueling Area s. Minimize the discharge of fuel to the storm sewer/surface waters resulting from fuel servicing activities or other operations conducted in support of the airport fuel system. Implement appropriate control measures, such as th e following control measures (or their equivalents): implementing spill and overflow practices (e.g., placing absorptive materials beneath aircraft duri ng fueling operations); using only dry cleanup methods; and collecting stormwater runoff.
8.S.3.1.6 Source Reduction. Minimize, and where practicable eliminate, the use of urea and glycol-based deicing chemicals, in order to reduce the aggregate amount of deicing chemicals used and/ or lessen the environmental impact. Chemical options to replace ethylene glycol, propylene glycol and urea include: potassium acetate; magnesium acetate; calcium acetate; and anhydrous sodium acetate.
8.S.3.1.6.1 Runway Deicing Operation: Minimize contamination of stormwater runoff from runways as a result of deicing operations. Evaluate whether over-application of deicing chemicals occurs by analyzing application rates, and adjust as necessary, consistent with considerations of flight safety. Implement appropriate control measures, such as the following options (or their equivalents): metered application of chemicals; pre-wetting dry chemical constituents prior to application; installing a runway ice detection system; implementing anti-icing operations as a preventive measure against ice buildup.
8.S.3.1.6.2 Aircraft Deicing Operations. Minimize contamination of stormwater runoff from aircraft deicing operations. Determine whether excessive application of deicing chemicals occurs and adjust as necessary, consistent with considerations of flight safety. This evaluation should be carried out by the personnel most familiar with the particular aircraft and flight operations in question (versus an outside entity such as the airport authority). Use benign alternative deicing/anti-icing techniques and agents as well as containment measures for all applied chemicals where practicable. Implement appropriate control measures, such as the following options (or their equivalents) for reducing deicing fluid use: forced-air deicing systems, computer-controlled fixed-gantry systems, infrared technology, hot water, varying glycol content to air temperature, enclosed-basket deicing trucks, mechanical

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methods, solar radiation, hangar storage, aircraft covers, and thermal blankets for MD-80s and DC-9s. Use ice-detection systems and airport traffic flow strategies and departure slot allocation systems where practicable.
8.S.3.1.7 Management of Runoff. (See also 2.1.2.6) Where deicing operations occur, implement a program to control or manage contaminated runoff to minimize the amount of pollutants being discharged from the site. Where practicable, install a centralized deicing pad to recover deicing fluid following application, or where impracticable, use vacuum/collection trucks (glycol recovery vehicles). Also, consider these control measure options (or their equivalents): a dedicated deicing facility with a runoff collection/ recovery system; using vacuum/collection trucks; storing contaminated stormwater/deicing fluids in tanks and releasing controlled amounts to a publicly owned treatment works; collecting contaminated runoff in a wet pond for biochemical decomposition (be aware of attracting wildlife that may prove hazardous to flight operations); and directing runoff into vegetative swales or other infiltration measures. Recover deicing materials when these materials are applied during non-precipitation events (e.g., covering storm sewer inlets, using booms, installing absorptive interceptors in the drains, etc.) to prevent these materials from later becoming a source of stormwater contamination. Used deicing fluid should be recycled whenever possible.

8.S.3.2 Deicing Season. You must determine the seasonal timeframe (e.g., DecemberFebruary, October - March) during which deicing activities typically occur at the facility. Implementation of control measures, including any BMPs, facility inspections and monitoring must be conducted with particular emphasis throughout the defined deicing season. If you meet the deicing ch emical usage thresholds of 100,000 gallons glycol and/or 100 tons of urea, the deicin g season you identified is the timeframe during which you must obtain the four requ ired benchmark monitoring event results for deicing-related parameters, i.e., BOD, COD, ammonia and pH. See also Part 8.S.6.
8.S.4 Additional SWPPP Requirements. An airport authority and tenants of the airport are encouraged to work in partnership in the development of a SWPPP. If an airport tenant obtains authorization under this permit and develops a SWPPP for discharges from his own areas of the airport, prior to authorization, that SWPPP must be coordinated and integrated with the SWPPP for the entire airport. Tenants of the airport facility include air passenger or cargo companies, fixed based operators and other parties who have contracts with the airport authority to conduct business operations on airport property and whose operations result in stormwater discharges associated with industrial activity.

8.S.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in the SWPPP the following areas of the facility and indicate whether activities occurring there may be exposed to precipitation/surface runoff: aircraft and runway deicing operations; fueling stations; aircraft, ground vehicle and equipment ma intenance/cleaning areas; storage areas for aircraft, ground vehicles and equipment awaiting maintenance.

8.S.4.2 Potential Pollutant Sources. (See also Part 5.2.3) In your inventory of exposed materials, describe in your SWPPP the potential for the following activities and facility areas to contribute pollutants to stormwater discha rges: aircraft, runway, ground vehicle and equipment maintenance and cleaning; airc raft and runway deicing operations (including apron and centralized aircraft deicing stations, runways, taxiways and ramps). If you use deicing chemicals, you must maintain a record of the types

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(including the Material Safety Data Sheets [MSDS]) used and the monthly quantities, either as measured or, in the absence of metering, as estimated to the best of your knowledge. This includes all deicing chem icals, not just glycols and urea (e.g., potassium acetate), because large quantities of these other chemicals can still have an adverse impact on receiving waters. Tenants or other fixed-based operations that conduct deicing operations must provide the above information to the airport authority for inclusion with any comprehensive airport SWPPPs.

8.S.4.3 Vehicle and Equipment Washwater Requirements. Attach to or reference in your SWPPP, a copy of the NPDES permit issued for vehicle/equipment washwater or, if an NPDES permit has not been issued, a copy of the pending application. If an industrial user permit is issued under a local pretreatment program, include a copy in your SWPPP. In any case, if you are subject to another permit, describe your control measures for implementing all non-stormwater discharge permit conditions or pretreatment requirements in your SWPPP. If washwater is handled in another manner (e.g., hauled offsite, retained onsite), de scribe the disposal method and attach all pertinent documentation/information (e.g., frequency, volume, destination, etc.) in your SWPPP.

8.S.4.4 Documentation of Control Measures Used for Management of Runoff: Document in your SWPPP the control measures used for collecting or containing contaminated melt water from collection areas used for disposal of contaminated snow.
8.S.5 Additional Inspection Requirements. At a minimum conduct facility inspections at least monthly during the deicing season (e.g., October through April for most mid-latitude airports). If your facility needs to deice before or after this period, expand the monthly inspections to include all months during which deicing chemicals may be used. The Director may specifically require you to increase inspection frequencies.
8.S.6 Sector-Specific Benchmarks. Table 8.S-1 identifies benchmarks that apply to Sector S. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.S-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration
For airports where a single permittee, or a combination of permitted facilities use more than 100,000 gallons of glycol-based deicing chemicals and/or 100 tons or more of urea on an average annual basis, monitor the first four parameters in ONLY those outfalls that collect runoff from areas where deicing activities occur ( SIC 4512-4581 )

. Biochemical Oxygen Demand ( BOD 5 ) 1 30 mg/L

Chemical Oxygen Demand ( COD ) 1 120 mg/L

Ammonia 1 2.14 m g /L pH 1 6.0 - 9.0 s.u.

1 These are deicing-related parameters. Collect the four benchmark samples, and any required follow-up benchmark samples, during the timeframe defined in Part 8.S.3.2 when deicing activities are occurring.

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8.S.7 Effluent Limitations Based on Effluent Limita tions Guidelines (See also Part 6.2.2.1 of the permit.)

8.S.7.1 Airfield Pavement Deicing. Existing and new primary airports with 1,000 or more annual jet departures ("non-propeller aircraft") th at discharge wastewater associated withairfield pavement deicing commingled with stormwater must either use non-ureacontaining deicers or meet the effluent limit in Table 8-S-2.

8.S.7.2 Aircraft Deicing. Airports meeting the definition of a new source (“new airports”) with 10,000 annual departures located in cold climate zones must collect 60 percent of aircraft deicing fluid after deicing. See 40 CFR 449.11 for the Airport Effluent Limitation Guidelines requirements for this new source category. Discharges of the collected aircraft deicing fluid directly to waters of the U.S. are not eligible for coverage under this permit. 8.S.7.3 Monitoring, Reporting and Recordkeeping. For new airports subject to the effluent limitations in 8.S.7.2, you must comply with the monitoring, reporting and recordkeeping requirements outlined in 40 CFR 449.20(a)(1) and (2).

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Table 8.S-2 Industrial Activity Parameter Effluent Limit Existing and new primary airports with 1,000 or more annual jet departures that discharge wastewater associated with airfield pavement deicing that contains urea commingled with stormwater Ammonia as Nitrogen 14.7 mg/L, daily maximum

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart T – Sector T – Treatment Works.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.T.1 Covered Stormwater Discharges. The requirements in Subpart T apply to stormw ater discharges associated with industrial activity from Treatment Works as identified by the Activity Code specified under Sector T in Table D-1 of Appendix D of the permit. 8.T.2 Industrial Activities Covered by Sector T. The requirements listed under this part apply to all existing point source stormwater discharges associated with the following activities: 8.T.2.1 Treatment works treating domestic sewage, or any other sewage sludge or wastewater treatment device or system used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated to the disposal of sewage sludge; that are located within the confines of a facility with a design flow of 1.0 million gallons per day (MGD) or more; or are required to have an approved pretreatment program under 40 CFR Part 403.
8.T.2.2 The following are not required to have permit coverage: farm lands, domestic gardens or lands used for sludge management where sludge is beneficially reused and which are not physically located within the facility, or areas that are in compliance with Section 405 of the CWA.
8.T.3 Limitations on Coverage.
8.T.3.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) Sanitary and industrial wastewater and equipment and vehicle washwa ter are not authorized by this permit.
8.T.4 Additional Technology-Based Effluent Limits.
8.T.4.1 Control Measures. (See also the non-numeric effluent lim its in Part 2.1.2) In addition to the other control measures, evaluate implementation of the following additional control measures: routing stormwater to the treatment works; or covering exposed materials (i.e., from the following areas: grit, screenings, and other solids handling, storage, or disposal areas; sludge drying beds; dried sludge piles; compost piles; and septage or hauled waste receiving station).

8.T.4.2 Employee Training. (See also Part 2.1.2.8) At a minimum, training must address the following areas when applicable to a facility: petroleum product management; process chemical management; spill prevention and controls; fueling procedures; general good housekeeping practices; and proper procedures for using fertilizer, herbicides, and pesticides.
8.T.5 Additional SWPPP Requirements.
8.T.5.1 Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: grit, screenings, and other solids handling, storage, or disposal areas; sludge drying beds; dried sludge piles; compost

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piles; septage or hauled waste receiving station; and storage areas for process chemicals, petroleum products, solvents, fertilizers, herbicides, and pesticides.

8.T.5.2 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following additional sources and activities that have potential pollutants associated with them, as applicable: grit, screenings, and other solids handling, storage, or disposal areas; sludge drying beds; dried sludge piles; compost piles; septage or hauled waste receiving station; and access roads and rail lines.

8.T.5.3 Wastewater and Washwater Requirements. Keep a copy of all your current NPDES permits issued for wastewater and indu strial, vehicle and equipment washwater discharges or, if an NPDES permit has no t yet been issued, a copy of the pending application(s) with your SWPPP. If the washwater is handled in another manner, the disposal method must be described and all pertinent documentation must be retained onsite.
8.T.6 Additional Inspection Requirements. (See also Part 3.1) Include the following areas in all inspections: access roads and rail lines; grit, screenings, and other solids handling, st orage, or disposal areas; sludge drying beds; dried sludge piles; compost piles; and se ptage or hauled waste receiving station.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart U – Sector U – Food and Kindred Products.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.U.1 Covered Stormwater Discharges. The requirements in Subpart U apply to stormw ater discharges associated with industrial activity from Food and Kindred Products facilities as identified by the SIC Codes specified in Table D-1 of Appendix D of the permit. 8.U.2 Limitations on Coverage.
8.U.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) The following discharges are not authorized by this permit: discharges containing boiler blowdown, cooling tower overflow and blowdown, ammonia refriger ation purging, and vehicle washing and clean-out operations. 8.U.3 Additional Technology-Based Limitations.
8.U.3.1 Employee Training. (See also Part 2.1.2.8) Address pest control in your employee training program.
8.U.4 Additional SWPPP Requirements.
8.U.4.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP the locations of the following activities if they are exposed to precipitation or runoff: vents and stacks from cooking, drying, and similar operations; dry product vacuum transfer lines; animal holding pens; spoiled product; and broken product container storage areas.

8.U.4.2 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP, in addition to food and kindred products processing-related industrial activities, application and storage of pest control chemicals (e.g., rodenticides, insecticides, fungicides) used on plant grounds.
8.U.5 Additional Inspection Requirements. (See also Part 3.1) Inspect on a quarterly ba sis, at a minimum, the following areas where the potential for exposure to stormwater exists: loading and unloading areas for all significant materials; storage areas, including associated containment areas; waste management units; vents and stacks emanating from industrial activities; spoiled product and broken product container holding areas; animal holding pens; staging areas; and air pollution control equipment. 8.U.6 Sector-Specific Benchmarks. Table 8.U-1 identifies benchmarks that apply to the specific subsectors of Sector U. These benchmarks apply to both your primary industrial activity and any co-located industrial activities.

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Table 8.U-1.

Subsector (You may be subject to requirements for more than one Sector / Subsector) Parameter Benchmark Monitoring Concentration

Subsector U1 . Grain Mill Products (SIC 2041-2048) Total Suspended Solids (TSS) 100 mg/L

Subsector U2 . Fats and Oils Products (SIC 2074-2079) Biochemical Oxygen Demand ( BOD 5 ) 30 mg/L

Chemical Oxygen Demand ( COD ) 120 mg/L

Nitrate plus Nitrite Nitro g en 0.68 m g /L Total Suspended Solids (TSS) 100 mg/L

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart V – Sector V – Textile Mills, Ap parel, and Other Fabric Products.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.V.1 Covered Stormwater Discharges. The requirements in Subpart V apply to stormwater discharges associated with industrial activity from Textile Mills, Apparel, and Other Fabric Product manufacturing as identified by the SIC Codes specified under Sector V in Table D-1 of Appendix D of the permit. 8.V.2 Limitations on Coverage.
8.V.2.1 Prohibition of Non-Stormwater Discharges. (See also Part 1.1.4) The following are not authorized by this permit: discharges of wastewater (e.g., wastewater resulting from wet processing or from any processes relating to the production process), reused or recycled water, and waters used in cooling towers. If you have these types of discharges from your facility, you must cover them under a separate NPDES permit.
8.V.3 Additional Technology-Based Limitations.
8.V.3.1 Good Housekeeping Measures. (See also Part 2.1.2.2)

8.V.3.1.1 Material Storage Areas. Plainly label and store all containerized materials (e.g., fuels, petroleum products, solvents, and dyes) in a protected area, away from drains. Minimize contamination of the stormwater runoff from such storage areas. Also consider an invent ory control plan to prevent excessive purchasing of potentially hazardous substances. For storing empty chemical drums or containers, ensure that the drums and containers are clean (consider triple-rinsing) and that there is no contact of residuals with precipitation or runoff. Collect and dispose of washwater from these cleanings properly.

8.V.3.1.2 Material Handling Areas. Minimize contamination of stormwater runoff from material handling operations and ar eas. Implement appropriate control measures, such as the following (or their equivalents): use of spill and overflow protection; covering fueling areas; and covering or enclosing areas where the transfer of material may occur. When applicable, address the replacement or repair of leaking connections, valves, transfer lines, and pipes that may carry chemicals, dyes, or wastewater.

8.V.3.1.3 Fueling Areas. Minimize contamination of stormwater runoff from fueling areas. Implement appropriate control measures , such as the following (or their equivalents): covering the fueling area, using spill and overflow protection, minimizing run-on of stormwater to the fueling areas, using dry cleanup methods, and treating and/or recycling stormwater runoff collected from the fueling area.

8.V.3.1.4 Above-Ground Storage Tank Area. Minimize contamination of the stormwater runoff from above-ground storage tank areas, including the associated piping and valves. Implement appropriate cont rol measures, such as the following (or their equivalents): regular cleanup of these areas; including measures for

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tanks, piping and valves explicitly in yo ur SPCC program; minimizing runoff of stormwater from adjacent areas; restricting access to the area; inserting filters in adjacent catch basins; providing absorbent booms in unbermed fueling areas; using dry cleanup methods; and permanently sealing drains within critical areas that may discharge to a storm drain.

8.V.3.2 Employee Training. (See also Part 2.1.2.8) As part of your employee training program, address, at a minimum, the following activities (as applicable): use of reused and recycled waters, solvents management, proper disposal of dyes, proper disposal of petroleum products and spent lubricants, spill prevention and control, fueling procedures, and general good housekeeping practices.
8.V.4 Additional SWPPP Requirements.
8.V.4.1 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following additional sources and activities that have potential pollutants associated with them: industry-specific significant materials and industrial activities (e.g., backwinding, beaming, bleaching, backing bonding, carbonizing, carding, cut and sew operations, desizing, drawing, dyeing locking, fulling, knitting, mercerizing, opening, packing, plying, scouring, slashing, spinning, synthetic-felt processing, textile waste processing, tufting, turning, weaving, web forming, wi nging, yarn spinning, and yarn texturing).

8.V.4.2 Description of Good Housekeeping Measures for Material Storage Areas. Document in the SWPPP your containment area or encl osure for materials stored outdoors in connection with Part 8.V.3.1.1 above.
8.V.5 Additional Inspection Requirements. Inspect, at least monthly, the following activities and areas (at a minimum): transfer and transmission lines, spill prevention, good housek eeping practices, management of process waste products, and all structural and nonstructural management practices.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart W – Sector W – Furniture and Fixtures.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.W.1 Covered Stormwater Discharges. The requirements in Subpart W apply to stormw ater discharges associated with industrial activity from Furniture and Fixtures facilities as identified by the SIC Codes specified under Sector W in Table D-1 of Appendix D of the permit. 8.W.2 Additional SWPPP Requirements.
8.W.2.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: material storage (including tanks or other vessels used for liquid or waste storage) areas; outdoor material processing areas; areas where wastes are treated, stored, or disposed of; access roads; and rail spurs.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart X – Sector X – Printing and Publishing.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.X.1 Covered Stormwater Discharges. The requirements in Subpart X apply to stormw ater discharges associated with industrial activity from Printing and Publishing facilities as identified by the SIC Codes specified under Sector X in Table D-1 of Appendix D of the permit. 8.X.2 Additional Technology-Based Effluent Limits.
8.X.2.1 Good Housekeeping Measures. (See also Part 2.1.2.2)

8.X.2.1.1 Material Storage Areas. Plainly label and store all containerized materials (e.g., skids, pallets, solvents, bulk inks, hazardous waste, empty drums, portable and mobile containers of plant debris, wood crates, steel racks, and fuel oil) in a protected area, away from drains. Minimize contamination of the stormwater runoff from such storage area s. Also consider an inventory control plan to prevent excessive purchasing of potentially hazardous substances.

8.X.2.1.2 Material Handling Area. Minimize contamination of stormwater runoff from material handling operations and areas (e.g., blanket wash, mixing solvents, loading and unloading materials). Implement appropriate control measures, such as the following (or their equivalents): using spill and overflow protection, covering fueling areas, and covering or enclosing areas where the transfer of materials may occur. When applicable, address the replacement or repair of leaking connections, valves, transfer lines, and pipes that may carry chemicals or wastewater.

8.X.2.1.3 Fueling Areas. Minimize contamination of stormwater runoff from fueling areas. Implement appropriate control measures , such as the following (or their equivalents): covering the fueling area, using spill and overflow protection, minimizing runoff of stormwater to the fueling areas, using dry cleanup methods, and treating and/or recycling stormwater runoff collected from the fueling area.

8.X.2.1.4 Above Ground Storage Tank Area. Minimize contamination of the stormwater runoff from above-ground storage tank areas, including the associated piping and valves. Consider the following (or their equivalents): regularly cleaning these areas, explicitly addressing ta nks, piping and valves in the SPCC program, minimizing stormwater runoff from adjacent areas, restricting access to the area, inserting filters in adjacent catch basins, providing absorbent booms in unbermed fueling areas, using dry cleanup methods, and permanently sealing drains within critical areas that may discharge to a storm drain.

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8.X.2.2 Employee Training. (See also Part 2.1.2.8) As part of your employee training program, address, at a minimum, the following activities (as applicable): spent solvent management, spill prevention and control, used oil management, fueling procedures, and general good housekeeping practices.
8.X.3 Additional SWPPP Requirements.
8.X.3.1 Description of Good Housekeeping Measures for Material Storage Areas. In connection with Part 8.X.2.1.1, describe in the SW PPP the containment area or enclosure for materials stored outdoors.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart Y – Sector Y – Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.Y.1 Covered Stormwater Discharges. The requirements in Subpart Y apply to stormw ater discharges associ ated with industrial activity from Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries facilities as identified by the SIC Codes specifie d under Sector Y in Table D-1 of Appendix D of the permit. 8.Y.2 Additional Technology-Based Effluent Limits.
8.Y.2.1 Controls for Rubber Manufacturers. (See also Part 2.1.2) Mini mize the discharge of zinc in your stormwater discharges. Parts 8.Y.2.1.1 to 8.Y.2.1.5 give possible sources of zinc to be reviewed and list some specific contro l measures to be implemented (or their equivalents). In addition to these cont rol measures the following include some additional general control measure options to be evaluated for implementation: using chemicals purchased in pre-weighed, sealed polyethylene bags; storing in-use materials in sealable containers, ensuring an airspace between the container and the cover to minimize “puffing” losses when the container is opened, and using automatic dispensing and weighing equipment.

8.Y.2.1.1 Zinc Bags. Ensure proper handling and storage of zinc bags at your facility. Following are some control measure options: employee training on the handling and storage of zinc bags, indoor storage of zinc bags, cleanup of zinc spills without washing the zinc into the storm drain, and the use of 2,500- pound sacks of zinc rather than 50- to 100-pound sacks.

8.Y.2.1.2 Dumpsters. Minimize discharges of zinc from dumpsters. Following are some control measure options: covering the dumpster, moving the dumpster indoors, or providing a lining for the dumpster.

8.Y.2.1.3 Dust Collectors and Baghouses. Minimize contributions of zinc to stormwater from dust collectors and baghouses. Replace or repair, as appropriate, improperly operating dust collectors and baghouses.

8.Y.2.1.4 Grinding Operations. Minimize contamination of stormwater as a result of dust generation from rubber grinding operations. One control measure option is to install a dust collection system.

8.Y.2.1.5 Zinc Stearate Coating Operations. Minimize the potential for stormwater contamination from drips and spills of zinc stearate slurry that may be released to the storm drain. One control measure option is to use alternative compounds to zinc stearate.

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8.Y.2.2 Controls for Plastic Products Manufacturers. Minimize the discharge of plastic resin pellets in your stormwater discharges. Control measures to be implemented (or their equivalents) include minimizing spills, cleaning up of spills promptly and thoroughly, sweeping thoroughly, pellet capturing, employee education, and disposal precautions.
8.Y.3 Additional SWPPP Requirements.
8.Y.3.1 Potential Pollutant Sources for Rubber Manufacturers. (See also Part 5.2.3) Document in your SWPPP the use of zinc at your facility and the possible pathways through which zinc may be discharged in stormwater runoff.
8.Y.4 Sector-Specific Benchmarks. Table 8.Y-1 identifies benchmarks that apply to Sector Y. These benchmarks apply to both your primary industrial activity an d any co-located industrial activities.

Table 8.Y-1.

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector Y1 . Rubber Products Manufacturing (SIC 3011, 3021, 3052, 3053, 3061, 3069) Total Zinc (freshwater) 2

Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 mg/L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Zinc (mg/L) 0-24.99 mg/L 0.04 25-49.99 mg/L 0.05 50-74.99 mg/L 0.08 75-99.99 mg/L 0.11 100-124.99 mg/L 0.13 125-149.99 mg/L 0.16 150-174.99 mg/L 0.18 175-199.99 mg/L 0.20 200-224.99 mg/L 0.23 225-249.99 mg/L 0.25 250+ mg/L 0.26

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart Z – Sector Z – Leathe r Tanning and Finishing.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.Z.1 Covered Stormwater Discharges. The requirements in Subpart Z apply to stormw ater discharges associated with industrial activity from Leather Tanning and Finishing facilities as identified by the SIC Code specified under Sector Z in Table D-1 of Appendix D of the permit. 8.Z.2 Additional Technology-Based Effluent Limits.
8.Z.2.3 Good Housekeeping Measures. (See also Part 2.1.2.2)

8.Z.2.3.1 Storage Areas for Raw, Semiprocessed, or Finished Tannery By-products. Minimize contamination of stormwater runoff from pallets and bales of raw, semiprocessed, or finished tannery by-products (e.g., splits, trimmings, shavings). Store or protect indoors with polyethylene wrapping, tarpaulins, roofed storage, etc. where practicabl e. Place materials on an impermeable surface and enclose or put berms (or equivalent measures) around the area to prevent stormwater run-on and runoff where practicable.

8.Z.2.3.2 Material Storage Areas. Label storage containers of all materials (e.g., specific chemicals, hazardous materials, spent solvents, waste materials) and minimize contact of such materials with stormwater.

8.Z.2.3.3 Buffing and Shaving Areas. Minimize contamination of stormwater runoff with leather dust from buffing and shaving areas. Implement dust collection enclosures, preventive inspection and maintenance programs, or other appropriate preventive measures where practicable.

8.Z.2.3.4 Receiving, Unloading, and Storage Areas. Minimize contamination of stormwater runoff from receiving, unload ing, and storage areas. If these areas are exposed, implement appropriate control measures, such as the following (or their equivalents): covering all hi des and chemical supplies, diverting drainage to the process sewer, or grade berming or curbing the area to prevent stormwater runoff.

8.Z.2.3.5 Outdoor Storage of Contaminated Equipment. Minimize contact of stormwater with contaminated equipm ent. Implement appropriate control measures, such as the following (or th eir equivalents): covering equipment, diverting drainage to the process sewer, and cleaning thoroughly prior to storage.

8.Z.2.3.6 Waste Management. Minimize contamination of stormwater runoff from waste storage areas. Implement appropriate co ntrol measures, such as the following (or their equivalents): covering du mpsters, moving waste management activities indoors, covering waste piles with temporary covering material such as tarpaulins or polyethylene, and minimizing stormwater runoff by enclosing the area or building berms around the area.

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8.Z.3 Additional SWPPP Requirements.
8.Z.3.1 Drainage Area Site Map. (See also Part 5.2.2) Identify in your SWPPP where any of the following may be exposed to precipitation or surface runoff: processing and storage areas of the beamhouse, tanyard, and re-tan wet finishing and dry finishing operations.

8.Z.3.2 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following sources and activities that have potential pollutants associated with them (as appropriate): temporary or permanent storage of fresh and brine-cured hides; extraneous hide substances and hair; leather dust, scraps, trimmings, and shavings.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart AA – Sector AA – Fabricated Metal Products
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.AA.1 Covered Stormwater Discharges. The requirements in Subpart AA apply to stormw ater discharges associated with industrial activity from Fabricated Metal Products facilities as identified by the SIC Codes specified under Sector AA in Table D-1 of Appendix D of the permit. 8.AA.2 Additional Technology-Based Effluent Limits.
8.AA.2.1 Good Housekeeping Measures. (See also Part 2.1.2.2)

8.AA.2.1.1 Raw Steel Handling Storage. Minimize the generation of and/or recover and properly manage scrap metals, fines, and iron dust. Include measures for containing materials within storage handling areas.

8.AA.2.1.2 Paints and Painting Equipment. Minimize exposure of paint and painting

equipment to stormwater.

8.AA.2.2 Spill Prevention and Response Procedures. (See also Part 2.1.2.4) Ensure that the necessary equipment to implement a cleanup is available to personnel. The following areas should be addressed

8.AA.2.2.1 Metal Fabricating Areas. Maintain clean, dry, orderly conditions in these areas. Use dry clean-up techniques where practicable.

8.AA.2.2.2 Storage Areas for Raw Metal. Keep these areas free of conditions that could cause, or impede appropriate and timely response to, spills or leakage of materials. Implement appropriate control measures, such as the following (or their equivalents): maintaining storage areas so that there is easy access in the event of a spill, and labeling stored materials to aid in identifying spill contents.

8.AA.2.2.3 Metal Working Fluid Storage Areas. Minimize the potential for stormwater contamination from storage areas for metal working fluids.

8.AA.2.2.4 Cleaners and Rinse Water. Control and clean up spills of solvents and other

liquid cleaners, control sand buildup and disbursement from sand-blasting operations, and prevent exposure of recyclable wastes. Substitute environmentally benign cl eaners when possible.

8.AA.2.2.5 Lubricating Oil and Hydraulic Fluid Operations. Minimize the potential for stormwater contamination from lubricating oil and hydraulic fluid operations. Use monitoring equipment or other devices to detect and control leaks and overflows where practicable. Install perimeter controls such as dikes, curbs, grass filter strips, or equivale nt measures where practicable.

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8.AA.2.2.6 Chemical Storage Areas. Minimize stormwater contamination and accidental spillage in chemical storage areas. Include a program to inspect containers and identify proper disposal methods.

8.AA.2.3 Spills and Leaks. (See also Part 5.2.3.3) In your spill prevention and response procedures, required by Part 2.1.2.4, pay attention to the following materials (at a minimum): chromium, toluene, pickle liquor, sulfuric aci d, zinc and other water priority chemicals, and hazardous chemicals and wastes.

8.AA.3 Additional SWPPP Requirements.
8.AA.3.1 Drainage Area Site Map. (See also Part 5.2.2) Document in your SWPPP where any of the following may be exposed to precipitation or surface runoff: raw metal storage areas; finished metal storage areas; scrap disposal collection sites; equipment storage areas; retention and detention basins; temporary and permanent diversion dikes or berms; right-of-way or perimeter diversio n devices; sediment traps and barriers; processing areas, including outside painting areas; wood preparation; recycling; and raw material storage.

8.AA.3.2 Potential Pollutant Sources. (See also Part 5.2.3) Document in your SWPPP the following additional sources and activities that have potential pollutants associated with them: loading and unloading operations for paints, chemicals, and raw materials; outdoor storage activities for raw materials, paints , empty containers, corn cobs, chemicals, and scrap metals; outdoor manufacturing or processing activities such as grinding, cutting, degreasing, buffing, and brazing; onsite waste disposal practices for spent solvents, sludge, pickling baths, shavings, ingot pieces, and refuse and waste piles.
8.AA.4 Additional Insp ection Requirements
8.AA.4.1 Inspections. (See also Part 3.1) At a minimum, include the following areas in all inspections: raw metal storag e areas, finished product st orage areas, material and chemical storage areas, spen t solvents and chemical stor age areas, recycling areas, loading and unloading areas, equipment stor age areas, paint areas, drainage from roof and vehicle fueling and maintenance areas. Potential pollutants include chromium, zinc, lubricating oil, solvents, aluminum, oil and grease, methyl ethyl ketone, steel, and related materials.

8.AA.5 Sector-Specific Benchmarks. (See also Part 6 of the permit.)

Table 8.AA-1

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector AA1 . Fabricated Metal Products, except Coating (SIC 3411- 3499; 3911-3915) Total Aluminum 0.75 m g /L Total Iron 1.0 m g /L Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Nitrate plus Nitrite Nitro g en 0.68 m g /L

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Table 8.AA-1

Subsector (You may be subject to requirements for more than one sector/subsector) Parameter Benchmark Monitoring Concentration

Subsector AA2 . Fabricated Metal Coating and Engraving (SIC 3479) Total Zinc (freshwater) 2 Total Zinc ( saltwater ) 1 Hardness Dependent 0.09 m g /L Nitrate plus Nitrite Nitro g en 0.68 m g /L

1 Saltwater benchmark values apply to stormwater discharges into saline waters where indicated.

2 The freshwater benchmark values of some metals are dependent on water hardness. For these parameters, permittees must determine the hardness of the receiving water (see Appendix J, “Calculating Hardness in Receiving Waters for Hardness Dependent Metals,” for methodology), in accordance with Part 6.2.1.1, to identify the applicable ‘hardness range’ for determining their benchmark value applicable to their facility. Hardness Dependent Benchmarks follow in the table below:

Freshwater Hardness Range Zinc (mg/L) 0-24.99 mg/L 0.04 25-49.99 mg/L 0.05 50-74.99 mg/L 0.08 75-99.99 mg/L 0.11 100-124.99 mg/L 0.13 125-149.99 mg/L 0.16 150-174.99 mg/L 0.18 175-199.99 mg/L 0.20 200-224.99 mg/L 0.23 225-249.99 mg/L 0.25 250+ mg/L 0.26

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart AB – Sector AB – Transportation Equi pment, Industrial or Commercial Machinery Facilities.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.AB.1 Covered Stormwater Discharges. The requirements in Subpart AB apply to stormw ater discharges associated with industrial activity from Transportation Equipment, Industrial or Commercial Machinery facilities as identified by the SIC Codes specified under Sector AB in Table D-1 of Appendix D of the permit. 8.AB.2 Additional SWPPP Requirements.
8.AB.2.1 Drainage Area Site Map. (See also Part 5.2.2) Identify in your SWPPP where any of the following may be exposed to precipitation or surface runoff: vents and stacks from metal processing and similar operations.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart AC– Sector AC –Electronic and Electric al Equipment and Components, Photographic and Optical Goods.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.AC.1 Covered Stormwater Discharges. The requirements in Subpart AC apply to stormw ater discharges associated with industrial activity from facilities that manufacture Electronic and Electrical Equipment and Components, Photographic and Optical goods as identified by the SIC Codes specified in Table D-1 of Appendix D of the permit. 8.AC.2 Additional Requirements. No additional sector-specific requirements apply.

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Part 8 – Sector-Specific Requirements for Industrial Activity
Subpart AD – Sector AD – Stormwater Discharges Designated by the Director as Requiring Permits.
You must comply with Part 8 sector-specific requir ements associated with your primary industrial activity and any co-located industrial activities, as defined in Appendix A. The sector-specific requirements apply to those areas of your facility where those sector-specific activities occur. These sector-specific requirements are in addition to any requirements specified elsewhere in this permit.
8.AD.1 Covered Stormwater Discharges. Sector AD is used to provide permit coverage for facilities designated by the Director as needing a stormwater permit, and any discharges of stormwater associated with industrial activity that do not meet the description of an industrial activity covered by Sectors A-AC.

8.AD.1.1 Eligibility for Permit Coverage. Because this sector is primarily intended for use by discharges designated by the Director as needing a stormwater permit (which is an atypical circumstance), and your facility may or may not normally be discharging stormwater associated with industrial activity, you must obtain the Director’s written permission to use this permit prior to submitting an NOI. If you are authorized to use this permit, you will still be required to ensure that your discharges meet the basic eligibility provisions of this permit at Part 1.1.
8.AD.2 Sector-Specific Benchmarks and Effluent Limits. (See also Part 6 of the permit.) The Director will establish any additional monitoring and reporting requirements for your facility prior to authorizing you to be covered by this permit. Additional monitoring requirements would be based on the nature of activities at your facility and your stormwater discharges.

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