Title of Regulation: 9VAC25-151. Virginia Pollutant Discharge Elimination System (VPDES) General Permit Regulation for Discharges of Stormwater Associated with Industrial Activity (amending 9VAC25-151-10, 9VAC25-151-15, 9VAC25-151-40 through 9VAC25-151-80, 9VAC25-151-90, 9VAC25-151-110, 9VAC25-151-130, 9VAC25-151-140, 9VAC25-151-150, 9VAC25-151-160, 9VAC25-151-180 through 9VAC25-151-220, 9VAC25-151-240, 9VAC25-151-320, 9VAC25-151-340, 9VAC25-151-350, 9VAC25-151-370; adding 9VAC25-151-85, 9VAC25-151-400).

Statutory Authority: § 62.1-44.15 of the Code of Virginia; § 402 of the Clean Water Act; 40 CFR Parts 122, 123, and 124.

Public Hearing Information:

June 26, 2023 - 1 p.m. - Department of Environmental Quality, Piedmont Regional Office Training Room, 4949-A Cox Road, Glen Allen, VA 23060

Public Comment Deadline: July 21, 2023.

Agency Contact: Joseph Bryan, Department of Environmental Quality, P.O. Box 1105, Richmond, VA 23218, telephone (804) 659-2659, FAX (804) 698-4178, or email joseph.bryan@deq.virginia.gov.

Background: This proposed action amends and reissues the Virginia Pollutant Discharge Elimination System (VPDES) General Permit Regulation for Discharges of Stormwater Associated with Industrial Activity (9VAC25-151), which expires on June 30, 2024. The existing general permit regulation establishes limitations, monitoring requirements, and other special conditions for point source discharges of stormwater associated with industrial activity to surface waters in order to maintain surface water quality.

Summary:

Proposed amendments to the general permit regulation include (i) removing the definition for "measurable storm event" and updating this term in the regulation with "storm event discharges"; (ii) revising the date to indicate that incorporated references are based on the Code of Federal Regulations published as of July 1, 2022; (iii) revising the term of the general permit regulation to July 1, 2024, through June 30, 2029; (iv) adding firefighting training activities managed in a manner to avoid an instream impact as an authorized non-stormwater discharge in accordance with § 9.1-207.1 of the Code of Virginia and clarifying that routine external building washdown must be managed in a manner to avoid instream impact; (v) clarifying that facilities subject to 40 CFR 449 (discharges from primary airport deicing operations) may be covered under Sector AD of the permit; (vi) adding the following requirements to registration statements: include a description of the primary industrial activity and all other industrial activities onsite; identify the SIC codes or Industrial Activity Codes for each individual outfall; and identify outfalls that collect runoff from mulch dyeing operations; (vii) clarifying that a new municipal separate storm sewer system notification does not need to be made with each re-registration under the general permit; (viii) removing a statement regarding deicing operations not being authorized under the permit; (ix) adding that once the electronic reporting date is established for this industry, registration statements shall be submitted electronically following a three-month notice by the department; (x) updating benchmarks in accordance with U.S. Environmental Protection Agency (EPA) 2021 Multi-Sector General Permit (MSGP), the Virginia Water Quality Standards, and the recommendations of the technical advisory committee (TAC); (xi) clarifying that facilities subject to 40 CFR 449 (discharges from primary airport deicing operations) may be covered under Sector AD of the permit; (xii) clarifying total maximum daily load (TMDL) conditions are only applicable if the TMDLs are approved by EPA prior to the term of the permit; (xiii) clarifying that sampling data collected during the 2019 industrial stormwater general permit term may be used to satisfy all or part of any TMDL monitoring requirements; (xiv) adding language requiring facilities exceeding a TMDL wasteload allocation to prepare and submit a pollutant minimization plan upon notification from the department; (xv) removing a requirement to report the duration in hours of storm events; (xvi) clarifying that the immediate reports required by Part II G, H, and I of the general permit shall be made to the department's regional office, updating the link to the online Pollution Response Preparedness portal, and requiring that the online portal shall be used for reports outside of normal working hours; (xvii) adding an Airport Deicing Operations condition to make it clear that they are covered by this general permit and providing some control measure options for consideration; (xviii) clarifying that copies of the stormwater pollution prevention plan (SWPPP) retained onsite may be either in hard copy or in electronic format; (xix) updating sector-specific benchmark monitoring parameters in accordance with the EPA 2021 MSGP, the Virginia Water Quality Standards, and the recommendations of the TAC; and (xx) moving the entirety of the Chesapeake Bay TMDL conditions to a new Part V (9VAC25-151-400) to simplify the general permit and changing the Chesapeake Bay TMDL conditions as follows: make the monitoring frequency quarterly; remove total suspended solids requirements; separate requirements into three distinct categories depending on the status of a facility's demonstration of compliance with the Chesapeake Bay TMDL nutrient loading rates; require reductions for existing facilities under the 2019 permit be achieved by December 31, 2025; require reductions for existing facilities that obtain initial coverage under the 2024 permit be achieved two years following the fourth quarterly monitoring period; allow facilities to use applicable sampling data collected during the 2019 permit term to satisfy all or part of their monitoring requirement; and allow alternative calculations to be proposed on a case-by-case basis to address facilities with outfalls that rarely discharge.

9VAC25-151-10. Definitions.

The words and terms used in this chapter shall have the meanings defined in the State Water Control Law (§ 62.1-44.2 et seq. of the Code of Virginia) and the VPDES Permit Regulation (9VAC25-31) unless the context clearly indicates shows otherwise, except that for the purposes of this chapter:

"Best management practices" or "BMPs" means schedules of activities, practices, prohibitions of practices, structures, vegetation, maintenance procedures, and other management practices, including both structural and nonstructural practices, to prevent or reduce the discharge of pollutants to surface waters.

"Board" means the Virginia State Water Control Board or State Water Control Board. When used outside the context of the promulgation of regulations, including regulations to establish general permits, "board" means the Department of Environmental Quality.

"Closed landfill" means a landfill that, on a permanent basis, will no longer receive waste and has completed closure in accordance with applicable federal, state, or local requirements.

"Coal pile runoff" means the rainfall runoff from or through any coal storage pile.

"Colocated industrial activity" means any industrial activity, excluding the facility's primary industrial activity, located on-site that meets the description of a category included in the "industrial activity" definition. An activity at a facility is not considered colocated if the activity, when considered separately, does not meet the description of a category included in the "industrial activity" definition or identified by the Standard Industrial Classification (SIC) code list in Table 50-2 in 9VAC25-151-50.

"Commercial treatment and disposal facilities" means facilities that receive, on a commercial basis, any produced hazardous waste (not their own) and treat or dispose of those wastes as a service to the generators. Such The facilities treating or disposing exclusively residential hazardous wastes are not included in this definition.

"Control measure" means any best management practice or other method (including effluent limitations) used to prevent or reduce the discharge of pollutants to surface waters.

"Corrective action" means any action to (i) repair, modify, or replace any stormwater control used at the facility; (ii) clean up and properly dispose of spills, releases, or other deposits at the facility; or (iii) return to compliance with permit requirements.

"Department" or "DEQ" means the Department of Environmental Quality.

"Director" means the Director of the Department of Environmental Quality or an authorized representative.

"Existing discharger" means an operator applying for coverage under this permit for discharges authorized previously under a VPDES general or individual permit.

"Impaired water" means, for purposes of this chapter, a water that has been identified by Virginia pursuant to § 303(d) of the Clean Water Act as not meeting applicable water quality standards (these waters are called "water quality limited segments" under 40 CFR 30.2(j)). Impaired waters include both waters with approved or established TMDLs, and those for which a TMDL has not yet been approved or established.

"Impervious surface" means a surface composed of any material that significantly impedes or prevents natural infiltration of water into the soil.

"Industrial activity" - the following categories of facilities are considered to be engaging in "industrial activity":

1. Facilities subject to stormwater effluent limitations guidelines, new source performance standards, or toxic pollutant effluent standards under 40 CFR Subchapter N (except facilities with toxic pollutant effluent standards which that are exempted under category 10 of this definition);

2. Facilities classified as Standard Industrial Classification (SIC) 24 (except 2434), 26 (except 265 and 267), 28 (except 283 and 285), 29, 311, 32 (except 323), 33, 3441, and 373 (Office of Management and Budget (OMB) SIC Manual, 1987);

3. Facilities classified as SIC 10 through 14 (mineral industry) (OMB SIC Manual, 1987) including active or inactive mining operations (except for areas of coal mining operations no longer meeting the definition of a reclamation area under 40 CFR 434.11(l) because the performance bond issued to the facility by the appropriate Surface Mining Control and Reclamation Act of 1977 (SMCRA) (30 USC § 1201 et seq.) authority has been released, or except for areas of noncoal mining operations which that have been released from applicable state or federal reclamation requirements after December 17, 1990) and oil and gas exploration, production, processing, or treatment operations, or transmission facilities that discharge stormwater contaminated by contact with or that has come into contact with, any overburden, raw material, intermediate products, finished products, byproducts, or waste products located on the site of such the operations (inactive mining operations are mining sites that are not being actively mined, but which have an identifiable owner or operator; inactive mining sites do not include sites where mining claims are being maintained prior to before disturbances associated with the extraction, beneficiation, or processing of mined materials, nor sites where minimal activities are undertaken for the sole purpose of maintaining a mining claim);

4. Hazardous waste treatment, storage, or disposal facilities, including those that are operating under interim status or a permit under Subtitle C of the Resource Conservation and Recovery Act (RCRA) (42 USC § 6901 et seq.);

5. Landfills, land application sites, and open dumps that receive or have received any industrial wastes (waste that is received from any of the facilities described under this definition, and debris or wastes from VPDES regulated construction activities or sites), including those that are subject to regulation under Subtitle D of RCRA;

6. Facilities involved in the recycling of materials, including metal scrapyards, battery reclaimers, salvage yards, and automobile junkyards, including but limited to those classified as Standard Industrial Classification Codes 5015 and 5093 (OMB SIC Manual, 1987);

7. Steam electric power generating facilities, including coal handling sites;

8. Transportation facilities classified as SIC Codes 40, 41, 42 (except 4221-4225), 43, 44, 45, and 5171 (OMB SIC Manual, 1987) which that have vehicle maintenance shops, equipment cleaning operations, or airport deicing operations. Only those portions of the facility that are either involved in vehicle maintenance (including vehicle rehabilitation, mechanical repairs, painting, fueling, and lubrication), equipment cleaning operation, airport deicing operation, or which that are otherwise identified under categories 1 through 7 or 9 and 10 of this definition are associated with industrial activity;

9. 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 is located within the confines of the facility, with a design flow of 1.0 MGD or more, or required to have an approved publicly owned treatment works (POTW) pretreatment program under 9VAC25-31. Not included are farm lands, domestic gardens or lands used for sludge management where sludge is beneficially reused and which that are not physically located in the confines of the facility, or areas that are in compliance with 9VAC25-31-420 through 9VAC25-31- 720 9VAC25-31-720; and

10. Facilities under SIC Codes 20, 21, 22, 23, 2434, 25, 265, 267, 27, 283, 285, 30, 31 (except 311), 323, 34 (except 3441), 35, 36, 37 (except 373), 38, 39, 4221-4225 (OMB SIC Manual, 1987).

"Industrial stormwater" means stormwater runoff from industrial activity.

"Land application unit" means an area where wastes are applied onto or incorporated into the soil surface (excluding manure spreading operations) for treatment or disposal.

"Landfill" means an area of land or an excavation in which wastes are placed for permanent disposal, and that is not a land application unit, surface impoundment, injection well, or waste pile.

"Measurable storm event" means a storm event that results in a discharge from an outfall.

"Minimize" means reduce or eliminate to the extent achievable using control measures (including best management practices) that are technologically available and economically practicable and achievable in light of best industry practice.

"Municipal separate storm sewer system" or "MS4" means a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): (i) owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to state law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under state law such as (e.g., a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under § 208 of the Clean Water Act that discharges to surface waters of the state); (ii) designed or used for collecting or conveying stormwater; (iii) which that is not a combined sewer; and (iv) which that is not part of a POTW.

"No exposure" means all industrial materials or activities are protected by a storm-resistant shelter to prevent exposure to rain, snow, snowmelt, or runoff.

"Primary industrial activity" includes any activities performed on-site that are:

1. Identified by the facility's primary SIC code; or

2. Included in the narrative descriptions of the definition of "industrial activity."

Narrative descriptions in the "industrial activity" definition include: category 1 activities subject to stormwater effluent limitations guidelines, new source performance standards, or toxic pollutant effluent standards; category 4 hazardous waste treatment storage or disposal facilities, including those that are operating under interim status or a permit under subtitle C of the Resource Conservation and Recovery Act (RCRA); category 5 landfills, land application sites, and open dumps that receive or have received industrial wastes; category 7 steam electric power generating facilities; and category 9 sewage treatment works with a design flow of 1.0 mgd or more.

For colocated activities covered by multiple SIC codes, the primary industrial determination should be based on the value of receipts or revenues, or, if such the information is not available for a particular facility, the number of employees or production rate for each process may be compared. The operation that generates the most revenue or employs the most personnel staff is the operation in which the facility is primarily engaged. In situations where the vast majority of on-site activity falls within one SIC code, that activity may be the primary industrial activity.

"Runoff coefficient" means the fraction of total rainfall that will appear at the conveyance as runoff.

"Significant materials" includes raw materials; fuels; materials such as (e.g., solvents, detergents, and plastic pellets); finished materials such as (e.g., metallic products); raw materials used in food processing or production; hazardous substances designated under § 101(14) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) (42 USC § 9601 et seq.); any chemical the facility is required to report pursuant to the Emergency Planning and Community Right-to-Know Act (EPCRA) § 313; fertilizers; pesticides; and waste products such as (e.g., ashes, slag and sludge) that have the potential to be released with stormwater discharges.

"Significant spills" includes releases of oil or hazardous substances in excess of reportable quantities under § 311 of the Clean Water Act (see 40 CFR 110.10 and 40 CFR 117.21) or § 102 of CERCLA (see 40 CFR 302.4).

"Site" means the land or water area where any facility or activity is physically located or conducted, including adjacent land used in connection with the facility or activity.

"Stormwater" means stormwater runoff, snow melt runoff, and surface runoff and drainage.

"Stormwater discharge associated with industrial activity" means the discharge from any conveyance that is used for collecting and conveying stormwater and that is directly related to manufacturing, processing, or raw materials storage areas at an industrial plant. The term does not include discharges from facilities or activities excluded from the VPDES program under 9VAC25-31. For the categories of industries identified in the "industrial activity" definition, the term includes stormwater discharges from industrial plant yards; immediate access roads and rail lines used or traveled by carriers of raw materials, manufactured products, waste material, or by-products byproducts used or created by the facility; material handling sites; refuse sites; sites used for the application or disposal of process wastewaters; sites used for the storage and maintenance of material handling equipment; sites used for residual treatment, storage, or disposal; shipping and receiving areas; manufacturing buildings; storage areas (including tank farms) for raw materials, and intermediate and final products; and areas where industrial activity has taken place in the past and significant materials remain and are exposed to stormwater. For the purposes of this definition, material handling activities include the storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product, by-product byproduct, or waste product. The term excludes areas located on plant lands separate from the plant's industrial activities, such as (e.g., office buildings and accompanying parking lots,) as long as the drainage from the excluded areas is not mixed with stormwater drained from the above these described areas. Industrial facilities include those that are federally, state, or municipally owned or operated that meet the description of the facilities listed in the "industrial activity" definition. The term also includes those facilities designated under the provisions of 9VAC25-31-120 A 1 c, or under 9VAC25-31-120 A 7 a (1) or (2) of the VPDES Permit Regulation.

"SWPPP" means stormwater pollution prevention plan.

"Total maximum daily load" or "TMDL" means a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL includes wasteload allocations (WLAs) for point source discharges, and load allocations (LAs) for nonpoint sources or natural background, and must include a margin of safety (MOS) and account for seasonal variations.

"Virginia Environmental Excellence Program" or "VEEP" means a voluntary program established by the department to provide public recognition and regulatory incentives to encourage higher levels of environmental performance for program participants that develop and implement environmental management systems (EMSs). The program is based on the use of EMSs that improve compliance, prevent pollution, and utilize other measures to improve environmental performance.

"Waste pile" means any noncontainerized accumulation of solid, nonflowing waste that is used for treatment or storage.

9VAC25-151-15. Applicability of incorporated references based on the dates that they became effective.

Except as noted, when a regulation of the U.S. Environmental Protection Agency set forth in Title 40 CFR is referenced and incorporated herein into this chapter, that regulation shall be as it exists and has been published as of July 1, 2018 2022.

9VAC25-151-40. Effective date of the permit.

This general permit will become effective on July 1, 2019 2024. This general permit will expire on June 30, 2024 2029.

9VAC25-151-50. Authorization to discharge.

A. To be eligible to discharge under this permit, an owner must (i) have a stormwater discharge associated with industrial activity from the facility's primary industrial activity, as defined in 9VAC25-151-10 (Definitions), provided the primary industrial activity is included in Table 50-2 of this section,; or (ii) be notified that discharges from the facility have been designated by the board department for permitting under the provisions of 9VAC25-31-120 A 1 c, or under 9VAC25-31-120 A 7 a (1) or (2) of the VPDES Permit Regulation, and are eligible for coverage under Sector AD of this permit.

Any owner governed by this general permit is hereby authorized to discharge stormwater associated with industrial activity, as defined in this chapter, to surface waters of the Commonwealth of Virginia provided that:

1. The owner submits a registration statement in accordance with 9VAC25-151-60, and that registration statement is accepted by the board department;

2. The owner submits the required permit fee;

3. The owner complies with the applicable requirements of 9VAC25-151-70 et seq.; and

4. The board department has not notified the owner that the discharge is ineligible for coverage in accordance with subsection B of this section.

B. The board department will notify an owner that the discharge is not eligible for coverage under this general permit in the event of any of the following:

1. The owner is required to obtain an individual permit in accordance with 9VAC25-31-170 B 3 of the VPDES Permit Regulation;

2. The owner is proposing to discharge to state waters specifically named in other board regulations that prohibit such discharges;

3. The discharge violates or would violate the antidegradation policy in the Water Quality Standards at 9VAC25-260-30; or

4. The discharge is not consistent with the assumptions and requirements of an approved TMDL. Virginia's Phase I Chesapeake Bay TMDL Watershed Implementation Plan (November 29, 2010) states that wasteloads for future growth for new facilities in the Chesapeake Bay watershed with industrial stormwater discharges cannot exceed the nutrient and sediment loadings that were discharged prior to before the land being developed for the new industrial activity. For purposes of this permit regulation, facilities that commence begin construction after June 30, 2019 2024, must be consistent with this requirement to be eligible for coverage under this general permit.

C. Additional conditions.

1. Facilities with colocated industrial activities on-site shall comply with all applicable effluent limitations, monitoring, and SWPPP requirements of each section of 9VAC25-151-70 et seq. in which a colocated industrial activity is described.

2. Stormwater discharges associated with industrial activity that are mixed with other discharges (both i.e., stormwater and nonstormwater) requiring a VPDES permit are authorized by this permit, provided that the owner obtains coverage under this VPDES general permit for the industrial activity discharges, and a VPDES general or individual permit for the other discharges. The owner shall comply with the terms and requirements of each permit obtained that authorizes any component of the discharge.

3. The stormwater discharges authorized by this permit may be combined with other sources of stormwater which that are not required to be covered under a VPDES permit, so long as the combined discharge is in compliance with this permit.

4. Authorized nonstormwater discharges. The following "nonstormwater" discharges are authorized by this permit:

a. Discharges from emergency firefighting activities or firefighting training activities managed in a manner to avoid an instream impact in accordance with § 9.1-207.1 of the Code of Virginia;

b. Fire hydrant flushing, managed in a manner to avoid an instream impact;

c. Potable water, including water line flushing, managed in a manner to avoid an instream impact;

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

e. Irrigation drainage;

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

g. Pavement wash waters where no detergents or hazardous cleaning products are used and no spills or leaks of toxic or hazardous materials have occurred (unless all spilled material has been removed). Pavement wash waters shall be managed in a manner to avoid an instream impact;

h. Routine external building washdown that does not use detergents or hazardous cleaning products and is managed in a manner to avoid an instream impact;

i. Uncontaminated groundwater or spring water;

j. Foundation or footing drains where flows are not contaminated with process materials; and

k. Incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of the facility, but not intentional discharges from the cooling tower (e.g., "piped" cooling tower blowdown or drains).

5. Stormwater discharges associated with construction activity that are regulated under a VPDES permit are not authorized by this permit.

6. Discharges subject to stormwater effluent limitation guidelines under 40 CFR Subchapter N (Effluent Guidelines and Standards). Only those stormwater discharges subject to stormwater effluent limitation guidelines under 40 CFR Subchapter N that are only eligible for coverage under this permit if they are identified in Table 50-1 of this subsection are eligible for coverage under this permit.

TABLE 50 - 1 STORMWATER-SPECIFIC EFFLUENT LIMITATION GUIDELINES.
Effluent Limitation Guideline	Sectors with Affected Facilities
Runoff from material storage piles at cement manufacturing facilities (40 CFR Part 411 Subpart C (established February 20, 1974))	E
Contaminated runoff from phosphate fertilizer manufacturing facilities (40 CFR Part 418 Subpart A (established April 8, 1974))	C
Coal pile runoff at steam electric generating facilities (40 CFR Part 423 (established November 19, 1982))	O
Discharges resulting from spray down or intentional wetting of logs at wet deck storage areas (40 CFR Part 429 Subpart I (established January 26, 1981))	A
Runoff from asphalt emulsion facilities (40 CFR Part 443 Subpart A (established July 24, 1975))	D
Runoff from landfills (40 CFR Part 445 Subparts A and B (established January 19, 2000))	K and L
Discharges from airport deicing operations (40 CFR Part 449 (established May 16, 2012))	Facilities subject to the effluent limitation guidelines in 40 CFR Part 449 are not authorized under this permit may be covered under Sector AD.

7. Permit eligibility is limited to discharges from facilities in the "sectors" of industrial activity summarized in Table 50-2 of this subsection. These sector descriptions are based on Standard Industrial Classification (SIC) Codes and Industrial Activity Codes. References to "sectors" in this permit refer to these groupings.

TABLE 50 - 2 SECTORS OF INDUSTRIAL ACTIVITY COVERED BY THIS PERMIT
SIC Code or Activity Code	Activity Represented
Sector A: Timber Products
2411	Log Storage and Handling (wet deck storage areas are only authorized if no chemical additives are used in the spray water or applied to the logs).
2421	General Sawmills and Planing Mills.
2426	Hardwood Dimension and Flooring Mills.
2429	Special Product Sawmills, Not Elsewhere Classified.
2431-2439 (except 2434 - see Sector W)	Millwork, Veneer, Plywood, and Structural Wood.
2441, 2448, 2449	Wood Containers.
2451, 2452	Wood Buildings and Mobile Homes.
2491	Wood Preserving.
2493	Reconstituted Wood Products.
2499	Wood Products, Not Elsewhere Classified (includes SIC Code 24991303 - Wood, Mulch and Bark facilities).
Sector B: Paper and Allied Products
2631	Paperboard Mills.
Sector C: Chemical and Allied Products
2812-2819	Industrial Inorganic Chemicals.
2821-2824	Plastics Materials and Synthetic Resins, Synthetic Rubber, Cellulosic and Other Synthetic Fibers, except Glass.
2841-2844	Soaps, Detergents, and Cleaning Preparations; Perfumes, Cosmetics, and Other Toilet Preparations.
2873-2879	Agricultural Chemicals (includes SIC Code 2875 - Composting Facilities).
Sector D: Asphalt Paving and Roofing Materials and Lubricants
2951, 2952	Asphalt Paving and Roofing Materials.
2992, 2999	Miscellaneous Products of Petroleum and Coal.
Sector E: Glass Clay, Cement, Concrete, and Gypsum Products
3251-3259	Structural Clay Products.
3261-3269	Pottery and Related Products.
3274, 3275	Concrete, Gypsum and Plaster Products, Except: Concrete Block and Brick; Concrete Products, except Block and Brick; and Ready-Mixed Concrete Facilities (SIC Codes 3271-3273).
Sector F: Primary Metals
3312-3317	Steel Works, Blast Furnaces, and Rolling and Finishing Mills.
3321-3325	Iron and Steel Foundries.
3351-3357	Rolling, Drawing, and Extruding of Nonferrous Metals.
3363-3369	Nonferrous Foundries (Castings).
Sector G: Metal Mining (Ore Mining and Dressing)
1011	Iron Ores.
1021	Copper Ores.
1031	Lead and Zinc Ores.
1041, 1044	Gold and Silver Ores.
1061	Ferroalloy Ores, except Vanadium.
1081	Metal Mining Services.
1094, 1099	Miscellaneous Metal Ores.
Sector H: Coal Mines and Coal Mining Related Facilities
1221-1241	Coal Mines and Coal Mining-Related Facilities.
Sector J: Mineral Mining and Dressing Facilities (SIC Codes 1411-1499 are not authorized under this permit)
Sector K: Hazardous Waste Treatment, Storage, or Disposal Facilities
HZ	Hazardous Waste Treatment Storage or Disposal.
Sector L: Landfills and Land Application Sites
LF	Landfills, Land Application Sites, and Open Dumps.
Sector M: Automobile Salvage Yards
5015	Automobile Salvage Yards.
Sector N: Scrap Recycling Facilities
5093	Scrap Recycling Facilities.
4499 (limited to list)	Dismantling Ships, Marine Salvaging, and Marine Wrecking - Ships for Scrap.
Sector O: Steam Electric Generating Facilities
SE	Steam Electric Generating Facilities.
Sector Q: Water Transportation and Ship and Boat Building or Repairing Yards.
4412-4499 (except 4499 facilities as specified in Sector N)	Water Transportation.
3731, 3732	Ship and Boat Building or Repairing Yards.
Sector U: Food and Kindred Products
2021-2026	Dairy Products.
2041-2048	Grain Mill Products.
2074-2079	Fats and Oils.
Sector Y: Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
3011	Tires and Inner Tubes.
3021	Rubber and Plastics Footwear.
3052, 3053	Gaskets, Packing, and Sealing Devices and Rubber and Plastics Hose and Belting.
3061, 3069	Fabricated Rubber Products, Not Elsewhere Classified.
Sector AA: Fabricated Metal Products
3411-3471, 3482-3499	Fabricated Metal Products, except Machinery and Transportation Equipment.
3479	Fabricated Metal Coating and Engraving.
3911-3915	Jewelry, Silverware, and Plated Ware.
Sector AB: Industrial or Commercial Machinery
3511-3599 (except 3571-3579 )	Industrial and Commercial Machinery (except Computer and Office Equipment).
Sector AD: Nonclassified Facilities/Stormwater Discharges Designated by the Board Department as Requiring Permits
N/A	Stormwater Discharges Designated by the Board Department for Permitting under the Provisions of 9VAC25-31-120 A 1, or under 9VAC25-31-120 A 7 a (1) or (2) of the VPDES Permit Regulation. Facilities may not elect to be covered under Sector AD. Only the board department may assign a facility to Sector AD.
Sector AE: Facilities with No Analytical Benchmark Monitoring Requirements
2611	Pulp Mills.
2621	Paper Mills.
2652-2657	Paperboard Containers and Boxes.
2671-2679	Converted Paper and Paperboard Products, except Containers and Boxes.
2833-2836	Medicinal Chemicals and Botanical Products; Pharmaceutical Preparations; In Vitro and In Vivo Diagnostic Substances; Biological Products, except Diagnostic Substances.
2851	Paints, Varnishes, Lacquers, Enamels, and Allied Products.
2861-2869	Industrial Organic Chemicals.
2891-2899	Miscellaneous Chemical Products.
3952 (limited to list)	Inks and Paints, Including China Painting Enamels, India Ink, Drawing Ink, Platinum Paints for Burnt Wood or Leather Work, Paints for China Painting, Artist's paints, and Artist's Watercolors.
3211	Flat Glass.
3221, 3229	Glass and Glassware, Pressed or Blown.
3231	Glass Products Made of Purchased Glass.
3241	Hydraulic Cement.
3281	Cut Stone and Stone Products.
3291-3299	Abrasive, Asbestos, and Miscellaneous Nonmetallic Mineral Products.
3331-3339	Primary Smelting and Refining of Nonferrous Metals.
3398, 3399	Miscellaneous Primary Metal Products.
3341	Secondary Smelting and refining of Nonferrous Metals.
1311	Crude Petroleum and Natural Gas.
1321	Natural Gas Liquids.
1381-1389	Oil and Gas Field Services.
2911	Petroleum Refineries.
4512-4581	Air Transportation Facilities.
TW	Treatment Works.
2011-2015	Meat Products.
2032-2038	Canned, Frozen, and Preserved Fruits, Vegetables, and Food Specialties.
2051-2053	Bakery Products.
2061-2068	Sugar and Confectionary Products.
2082-2087	Beverages.
2091-2099	Miscellaneous Food Preparations Kindred Products.
2111-2141	Tobacco Products.
2211-2299	Textile Mill Products.
2311-2399	Apparel and Other Finished Products Made from Fabrics and Similar Materials.
3131-3199	Leather and Leather Products, except Leather Tanning and Finishing.
2434	Wood Kitchen Cabinets.
2511-2599	Furniture and Fixtures.
2711-2796	Printing, Publishing, and Allied Products.
3081-3089	Miscellaneous Plastics Products.
3931	Musical Instruments.
3942-3949	Dolls, Toys, Games, and Sporting and Athletic Goods.
3951-3955 (except 3952)	Pens, Pencils, and Other Artist's Materials.
3961, 3965	Costume Jewelry, Costume Novelties, Buttons, and Miscellaneous Notions, except Precious Metal.
3991-3999	Miscellaneous Manufacturing Industries.
3111	Leather Tanning, Currying, and Finishing.
3711-3799 (except 3731, 3732 – see Sector Q)	Transportation Equipment, except Ship and Boat Building and Repairing.
3571-3579	Computer and Office Equipment.
3612-3699	Electronic and Other Electrical Equipment and Components, except Computer Equipment.
3812-3873	Measuring, Analyzing, and Controlling Instruments; Photographic, Medical, and Optical Goods; Watches and Clocks.
Sector AF: Facilities Limited to Total Suspended Solids Benchmark Monitoring Requirements
4011, 4013	Railroad Transportation.
4111-4173	Local and Highway Passenger Transportation.
4212-4231	Motor Freight Transportation and Warehousing.
4311	United State Postal Service.
5171	Petroleum Bulk Stations and Terminals.

D. Conditional exclusion for no exposure. Any owner covered by this permit who becomes eligible for a no exposure exclusion from permitting under 9VAC25-31-120 E may file a no exposure certification. Upon On submission and acceptance by the board department of a complete and accurate no exposure certification, the permit requirements no longer apply, and the owner is not required to submit a notice of termination. A no exposure certification must be submitted to the board department once every five years.

E. Compliance with this general permit constitutes compliance with the federal Clean Water Act and the State Water Control Law, with the exceptions stated in 9VAC25-31-60 of the VPDES Permit Regulation. Approval for coverage under this general permit does not relieve any owner of the responsibility to comply with any other applicable federal, state, or local statute, ordinance, or regulation.

F. Continuation of permit coverage.

1. Permit coverage shall expire at the end of its term. However, expiring permit coverages are automatically continued if the owner has submitted a complete registration statement at least 60 days prior to before the expiration date of the permit or a later submittal date established by the board department, which cannot extend beyond the expiration date of the original permit. The permittee is authorized to continue to discharge until such time as the board department either:

a. Issues coverage to the owner under this general permit; or

b. Notifies the owner that the discharge is not eligible for coverage under this general permit.

2. When the owner that was covered under the expiring or expired general permit has violated or is violating the conditions of that permit, the board department may choose to do any or all of the following:

a. Initiate enforcement action based upon on the general permit coverage that has been continued;

b. Issue a notice of intent to deny coverage under the amended general permit. If the general permit coverage is denied, the owner would then be required to cease the discharges authorized by the continued general permit coverage or be subject to enforcement action for discharging without a permit;

c. Issue an individual permit with appropriate conditions; or

d. Take other actions authorized by the VPDES Permit Regulation (9VAC25-31).

9VAC25-151-60. Registration statement and stormwater pollution prevention plan (SWPPP).

A. An owner seeking coverage under this general permit shall submit a complete VPDES general permit registration statement in accordance with this section, which shall serve as a notice of intent for coverage under the VPDES general permit regulation for discharges of stormwater associated with industrial activity.

Any owner that was authorized to discharge under the industrial stormwater general permit that became effective on July 1, 2014 2019, and that intends to continue coverage under this general permit shall review and update the stormwater pollution prevention plan (SWPPP) to meet all provisions of the general permit (9VAC25-151-70 et seq.) within 90 days of the board department granting coverage under this permit. Owners of new facilities, facilities previously covered by an expiring individual permit, and existing facilities not currently covered by a VPDES permit who that wish to obtain coverage under this general permit shall prepare and implement a written SWPPP for the facility in accordance with the general permit (9VAC25-151-70 et seq.) prior to before submitting the registration statement.

B. Deadlines for submitting registration statements.

1. Existing facilities.

a. Any owner that was authorized to discharge under the industrial stormwater general permit that became effective on July 1, 2014 2019, and that intends to continue coverage under this general permit shall submit a complete registration statement to the board department on or before May 2, 2019 1, 2024.

b. Any owner covered by a VPDES individual permit for stormwater discharges associated with industrial activity that is proposing to be covered under this general permit shall submit a complete registration statement at least 240 days prior to before the expiration date of the VPDES individual permit.

c. Any owner of an existing facility with stormwater discharges associated with industrial activity, not currently covered by a VPDES permit, that is proposing to be covered under this general permit shall submit a complete registration statement to the board department.

2. New facilities. Any owner proposing a new discharge of stormwater associated with industrial activity shall submit a complete registration statement at least 60 days prior to before the date planned for the commencement beginning of the industrial activity at the facility.

3. New owners of existing facilities. Where the owner of an existing facility that is covered by this permit changes, the new owner of the facility shall submit a complete registration statement within 30 days of the ownership change.

4. Late registration statements. Registration statements for existing facilities covered under subdivision 1 a of this subsection will be accepted after June 30, 2019 2024, but authorization to discharge will not be retroactive. Owners described in subdivision 1 a of this subsection that submit registration statements after May 2, 2019 1, 2024, are authorized to discharge under the provisions of 9VAC25-151-50 F (Continuation of permit coverage) if a complete registration statement is submitted before July 1, 2019 2024.

C. The required registration statement shall contain the following information:

1. Facility name and mailing address, owner name and mailing address, telephone number, and email address;

2. Facility street address (if different from mailing address) or location (if the facility location does not have a mailing address);

3. Facility operator (local contact) name, address, telephone number, and email address (if available) if different than owner;

4. The nature of the business conducted at the facility to be covered under this general permit, including a description of the primary industrial activity and all other industrial activities that take place;

5. The receiving waters of the industrial activity discharges;

6. A determination of whether the facility will discharge to an MS4. If the facility discharges to an MS4, the facility owner must notify the owner of the MS4 of the existence of the discharge information at the time of registration under this permit and include that notification with the registration statement. The notice shall include the following information: the name of the facility, a contact person and telephone number, the location of the discharge, the nature of the discharge, and the facility's VPDES general permit number (if assigned by DEQ);

7. The permit number for any existing VPDES permit assigned to the facility;

8. Indicate An indication that a an SWPPP has been prepared prior to before submitting this registration statement by the owner of a new facility, a facility previously covered by an expiring individual permit, or an existing facility not currently covered by a VPDES permit;

9. Whether or not this facility will discharge stormwater runoff from coal storage piles;

10. Identification 9. For each outfall, identification of up to four four-digit Standard Industrial Classification (SIC) Codes or 2-letter two-letter Industrial Activity Codes that best represent the principal products or services rendered by the facility and major colocated industrial activities (2-letter (two-letter Industrial Activity Codes are: HZ – hazardous waste treatment, storage, or disposal facilities; LF – landfills and disposal facilities that receive or have received any industrial wastes; SE – steam electric power generating facilities; or TW – treatment works treating domestic sewage);

11. 10. Identification of all applicable industrial sectors in this permit (as designated in Table 50-2) that cover the industrial activities at the facility, and major colocated industrial activities to be covered under this permit, and the stormwater outfalls associated with each industrial sector.

a. If the facility is a landfill (sector L), indicate state the type of landfill (i.e., MSWLF (municipal solid waste landfill), CDD (construction debris and demolition), or other), and which outfalls (if any) receive contaminated stormwater runoff;

b. If the facility is a timber products operation (sector A), indicate state which outfalls (if any) receive discharges from wet decking areas, and which outfalls (if any) collect runoff from areas where mulch dyeing operations (including loading, transporting, and storage) occur;

c. For all facilities, indicate state any outfalls receiving discharges from coal storage piles;

d. If the facility manufactures asphalt paving and roofing materials (sector D), indicate state which outfalls (if any) receive discharges from areas where production of asphalt paving emulsions or roofing emulsions occurs;

e. If the facility manufactures cement (sector E), indicate state which outfalls (if any) receive discharges from material storage piles;

f. If a scrap recycling and waste recycling facility (sector N - SIC 5093) only receives source-separated recyclable materials, indicate state which outfalls (if any) receive discharges from this activity. List the metals (if any) that are received; or

g. For primary airports, list the average deicing season and indicate state which outfalls (if any) receive discharges from deicing of non-propeller aircraft, and the annual average departures of non-propeller aircraft. It should be noted that airport facilities subject to the effluent limitation guidelines in 40 CFR Part 449 are not authorized under this permit or anti-icing operations;

12. 11. List the following facility area information:

a. The total area of the facility in acres;

b. The total area of industrial activity of the facility in acres;

c. The total impervious surface area of the industrial activity of the facility in acres;

d. The impervious and total areas in acres draining to each industrial activity outfall at the facility. Outfalls shall be numbered using a unique numerical identification code for each outfall. For example: Outfall Number 001, or Outfall Number 002, etc.; and

e. The latitude and longitude of each outfall location;

13. 12. A site map depicting the following shall be included with the registration statement:

a. The property boundaries;

b. All industrial activity outfalls labeled with unique numerical identification for each outfall. Outfall numbering shall be the same as that used for the facility area information in subdivision 12 11 of this subsection; and

c. All water bodies or MS4 conveyances, labeled with names if applicable, receiving stormwater discharges from the site;

14. 13. Virginia's Phase I Chesapeake Bay TMDL Watershed Implementation Plan (November 29, 2010) states that wasteloads for future growth for new facilities in the Chesapeake Bay watershed with industrial stormwater discharges cannot exceed the nutrient and sediment loadings that were discharged prior to before the land being was developed for the industrial activity. For purposes of this permit regulation, facilities that commence begin construction after June 30, 2019 2024, must be consistent with this requirement to be eligible for coverage under this general permit.

If this is a new facility that commenced began construction after June 30, 2019 2024, in the Chesapeake Bay watershed, and is applying for first time general permit coverage, attach documentation to the registration statement to demonstrate:

a. That the total phosphorus load does not exceed the greater of (i) the total phosphorus load that was discharged from the industrial area of the property prior to before the land being was developed for the new industrial activity, or (ii) 0.41 pounds per acre per year (VSMP water quality design criteria). The documentation must include the measures and controls that were employed to meet this requirement, along with the supporting calculations. The owner may include additional nonindustrial land on the site as part of any plan to comply with the no net increase requirement. Consistent with the definition of "site," this includes adjacent land used in connection with the facility. Compliance with the water quality design criteria may be determined utilizing the Virginia Runoff Reduction Method or another equivalent methodology approved by the board department. Design specifications and pollutant removal efficiencies for specific BMPs can be found on the Virginia Stormwater BMP Clearinghouse website at http://www.vwrrc.vt.edu/swc; or

b. The owner may consider utilization of any pollutant trading or offset program in accordance with §§ 62.1-44.19:20 through 62.1-44.19:23 of the Code of Virginia, governing trading and offsetting, to meet the no net increase requirement;

15. 14. State Corporation Commission entity identification number if the facility is required to obtain an entity identification number by law; and

16. 15. The following certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

D. The registration statement shall be signed in accordance with 9VAC25-31-110 A.

E. Where to submit. The registration statement may be delivered to the department by either postal or electronic mail and shall be submitted to the DEQ regional office serving the area where the industrial facility is located. Following notification from the department of the start date for the required electronic submission of Notices of Intent to Discharge forms (i.e., registration statements) as provided for in 9VAC25-31-1020, such forms submitted after that date shall be electronically submitted to the department in compliance with this section and 9VAC25-31-1020. There shall be at least a three-month notice provided between the notification from the department and the date after which such forms must be submitted electronically.

9VAC25-151-70. General permit.

Any owner whose registration statement is accepted by the director will receive the following general permit and shall comply with the requirements therein and be subject to the VPDES Permit Regulation, 9VAC25-31. Facilities with colocated industrial activities shall comply with all applicable monitoring and SWPPP requirements of each industrial activity sector of this chapter in which a colocated industrial activity is described. All pages of 9VAC25-151-70 and 9VAC25-151-80 apply to all stormwater discharges associated with industrial activity covered under this general permit. Not all pages of 9VAC25-151-90 et seq. will apply to every permittee. The determination of which pages apply will be based on an evaluation of the regulated activities located at the facility.

General Permit No.: VAR05

Effective Date: July 1, 2019 2024

Expiration Date: June 30, 2024 2029

VPDES GENERAL PERMIT FOR STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY

AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM AND THE VIRGINIA STATE WATER CONTROL LAW

In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the State Water Control Law and regulations adopted pursuant thereto, owners of facilities with stormwater discharges associated with industrial activity are authorized to discharge to surface waters within the boundaries of the Commonwealth of Virginia, except those waters specifically named in board regulation that prohibit such discharges.

The authorized discharge shall be in accordance with this cover page, the registration statement, Part I-Effluent Limitations, Monitoring Requirements and Special Conditions, Part II-Conditions Applicable to All VPDES Permits, Part III-Stormwater Pollution Prevention Plan, and Part IV-Sector-Specific Permit Requirements, and Part V-Chesapeake Bay Total Maximum Daily Load Compliance as set forth in this general permit.

Part I

Effluent Limitations, Monitoring Requirements and Special Conditions

A. Effluent limitations and monitoring requirements.

There are four individual and separate categories of monitoring requirements that a facility may be subject to under this permit: (i) quarterly visual monitoring; (ii) benchmark monitoring of discharges associated with specific industrial activities; (iii) compliance monitoring for discharges subject to numerical effluent limitations; and (iv) monitoring of discharges to impaired waters, both those with an approved TMDL and those without an approved TMDL. The monitoring requirements and numeric effluent limitations applicable to a facility depend on the types of industrial activities generating stormwater runoff from the facility, and for TMDL monitoring, the location of the facility's discharge or discharges. Part IV of the permit (9VAC25-151-90 et seq.) identifies monitoring requirements applicable to specific sectors of industrial activity. The permittee shall review Part I A 1 and Part IV of the permit to determine which monitoring requirements and numeric limitations apply to his the permittee's facility. Unless otherwise specified, limitations and monitoring requirements under Part I A 1 and Part IV are additive.

Sector-specific monitoring requirements and limitations are applied discharge by discharge at facilities with colocated activities. Where stormwater from the colocated activities are commingled, the monitoring requirements and limitations are additive. Where more than one numeric limitation for a specific parameter applies to a discharge, compliance with the more restrictive limitation is required. Where benchmark, numerical effluent limitations, or TMDL monitoring requirements for a monitoring period overlap, the permittee may use a single sample to satisfy monitoring requirements.

1. Types of monitoring requirements and limitations.

a. Quarterly visual monitoring. The requirements and procedures for quarterly visual monitoring are applicable to all facilities covered under this permit, regardless of the facility's sector of industrial activity.

(1) The permittee shall perform and document a quarterly visual examination of a stormwater discharge associated with industrial activity from each outfall, except discharges exempted in Part I A 3 or Part I A 4. The visual examinations shall be made at least once in each of the following three-month periods: January through March, April through June, July through September, and October through December. The visual examination shall be made during normal working hours, where practicable, and when considerations for safety and feasibility allow. If no storm event resulted in runoff from the facility during a monitoring quarter, the permittee is excused from visual monitoring for that quarter provided that documentation is included with the monitoring records indicating that no runoff occurred. The documentation shall be signed and certified in accordance with Part II K of this permit.

(2) Samples shall be collected in accordance with Part I A 2. Sample examination shall document observations of color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen, and other obvious indicators of stormwater pollution. The visual examination of the sample shall be conducted in a well-lit area. No analytical tests are required to be performed on the samples.

(3) The visual examination reports documentation shall be maintained on-site with the SWPPP. The report documentation shall include the outfall location, the examination date and time, examination personnel staff, the nature of the discharge (i.e., runoff or snow melt), visual quality of the stormwater discharge (including observations of color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen, and other obvious indicators of stormwater pollution), and probable sources of any observed stormwater contamination.

b. Benchmark monitoring of discharges associated with specific industrial activities.

Table 70-1 identifies the specific industrial sectors subject to the benchmark monitoring requirements of this permit and the industry-specific pollutants of concern. The permittee shall refer to the tables found in the individual sectors in Part IV (9VAC25-151-90 et seq.) for benchmark monitoring concentration values. Colocated industrial activities at the facility that are described in more than one sector in Part IV shall comply with all applicable benchmark monitoring requirements from each sector.

The results of benchmark monitoring are primarily for the permittee to use to determine the overall effectiveness of the SWPPP in controlling the discharge of pollutants to receiving waters. Benchmark concentration values, included in Part IV of this permit, are not effluent limitations. Exceedance of a benchmark concentration does not constitute a violation of this permit and does not indicate show that violation of a water quality standard has occurred; however, it does signal that modifications to the SWPPP are necessary, unless justification is provided in a routine facility inspection. In addition, exceedance of benchmark concentrations may identify facilities that would be more appropriately covered under an individual, or alternative general permit where more specific pollution prevention controls could be required.

TABLE 70-1 INDUSTRIAL SECTORS SUBJECT TO BENCHMARK MONITORING
Industry Sector1	SIC Code or Activity Code	Benchmark Monitoring Parameters
A	2421	TSS.
	2491	Arsenic, Chromium, Copper.
	2411	TSS.
	2426	TSS.
	2499 (24991303)	COD, TSS.
	2499 (Mulch Dyeing)	BOD, TSS, COD, Aluminum, Arsenic, Cadmium, Chromium, Copper, Iron, Selenium, Silver, Zinc, Total N, Total P.
B	2631	BOD.
C	2812-2819	Aluminum, Iron, Total N.
	2821-2824	Zinc.
	2841-2844	Total N, Zinc.
	2873-2879	Total N, Iron, Zinc, Total P.
	2875 (Composting Facilities)	TSS, BOD, COD, Ammonia, Total N, Total P.
D	2951, 2952	TSS.
E	3251-3259, 3261-3269	Aluminum.
	3274, 3275	TSS, pH, Iron.
F	3312-3317	Aluminum, Zinc.
	3321-3325	Aluminum, TSS, Copper, Iron, Zinc.
	3351-3357	Copper, Zinc.
	3363-3369	Copper, Zinc.
G2	1021	TSS.
H	1221-1241	TSS, Aluminum, Iron.
K	HZ (Hazardous Waste Treatment, Storage, or Disposal)	TKN, TSS, TOC, Arsenic, Cadmium, Cyanide, Lead, Magnesium, Mercury, Selenium, Silver.
L	LF (Landfills, Land Application Sites, and Open Dumps)	TSS.
M	5015	TSS, Aluminum, Iron, Lead.
N	5093	Copper, Aluminum, Iron, Lead, Zinc, TSS, Cadmium, Chromium.
	4499	Aluminum, Cadmium, Chromium, Copper, Iron, Lead, Zinc, TSS.
O	SE (Steam Electric Generating Facilities)	Iron Facilities in Sector O are not subject to benchmark requirements.
Q	4412-4499 (except 4499 facilities as specified in Sector N)	TSS, Copper, Zinc.
	3731, 3732	TSS, Copper, Zinc.
U	2021-2026	BOD, TSS.
	2041-2048	TSS, TKN.
	2074-2079	BOD, Total N, TSS.
Y	3011-3069	Zinc.
AA	3411-3471, 3482-3499, 3911-3915	Iron, Aluminum, Copper, Zinc.
	3479	Zinc.
AB	3511-3599 (except 3571-3579)	TSS, TPH, Copper, Zinc.
AD	Nonclassified Facilities/Stormwater Discharges Designated by the Board department as Requiring Permits	As determined by the director.
AE	2611, 2621, 2652-2657, 2671-2679, 2833-2836, 2851, 2861-2869, 2891-2899, 3952, 3211, 3221, 3229, 3231, 3241, 3281, 3291-3299, 3331-3339, 3398, 3399, 3341, 1311, 1321, 1381-1389, 2911, 4512-4581, (TW) Treatment Works, 2011-2015, 2032-2038, 2051-2053, 2061-2068, 2082-2087, 2091-2099, 2111-2141, 2211-2299, 2311-2399, 3131-3199, 2434, 2511-2599, 2711-2796, 3081-3089, 3931, 3942-3949, 3951-3955 (except 3952), 3961, 3965, 3991-3999, 3111, 3711-3799 (except 3731, 3732 see Sector Q), 3571-3579, 3612-3699, 3812-3873	Facilities in Sector AE are not subject to benchmark monitoring requirements.
AF	4011, 4013, 4111-4173, 4212-4231, 4311, 5171	TSS.
1Table does not include parameters for compliance monitoring under effluent limitations guidelines. 2See Sector G (Part IV G) for additional monitoring discharges from waste rock and overburden piles from active ore mining or dressing facilities, inactive ore mining or dressing facilities, and sites undergoing reclamation.

(1) Benchmark monitoring shall be performed for all benchmark parameters specified for the industrial sector or sectors applicable to a facility's discharge. Monitoring shall be performed at least once during each of the first four, and potentially all, monitoring periods after coverage under the permit begins. Monitoring commences begins with the first full monitoring period after the owner is granted coverage under the permit. Monitoring periods are specified in Part I A 2.

Depending on the results of four consecutive monitoring periods, benchmark monitoring may not be required to be conducted in subsequent monitoring periods (see Part I A 1 b (2)).

(2) Benchmark monitoring waivers for facilities testing below benchmark concentration values. Waivers from benchmark monitoring are available to facilities whose discharges are below benchmark concentration values on an outfall by outfall basis. Sector-specific benchmark monitoring is not required to be conducted in subsequent monitoring periods during the term of this permit provided:

(a) Samples were collected in four consecutive monitoring periods, and the average of the four samples for all parameters at the outfall is below the applicable benchmark concentration value in Part IV. Facilities that were covered under the 2014 2019 industrial stormwater general permit may use sampling data from the last two monitoring periods of that permit and the first two monitoring periods of this permit to satisfy the four consecutive monitoring periods requirement;

(b) The facility is not subject to a numeric effluent limitation established in Part I A 1 c (1) (stormwater effluent limitations), Part I A 1 c (2) (coal pile runoff), or Part IV (Sector Specific Permit Requirements) for any of the parameters at that outfall; and

(c) A waiver request is submitted to and approved by the board department. The waiver request shall be sent to the appropriate DEQ regional office, along with the supporting monitoring data for four consecutive monitoring periods, and a certification that, based on current potential pollutant sources and control measures used, discharges from the facility are reasonably expected to be essentially the same (or cleaner) substantially similar or cleaner compared to when the benchmark monitoring for the four consecutive monitoring periods was done.

Waiver requests will be evaluated by the board department based upon on (i) benchmark monitoring results below the benchmark concentration values; (ii) a favorable compliance history (including inspection results); and (iii) no outstanding enforcement actions.

The monitoring waiver may be revoked by the board department for cause. The permittee will be notified in writing that the monitoring waiver is revoked, and that the benchmark monitoring requirements are again in force and will remain in effect until the permit's expiration date.

(3) Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C and retained in accordance with Part II B.

c. Compliance monitoring for discharges subject to numerical effluent limitations or discharges to impaired waters.

(1) Facilities subject to stormwater effluent limitation guidelines.

(a) Facilities subject to stormwater effluent limitation guidelines (see Table 70-2) are required to monitor such the discharges to evaluate compliance with numerical effluent limitations. Industry-specific numerical limitations and compliance monitoring requirements are described in Part IV of the permit (9VAC25-151-90 et seq.). Permittees with colocated industrial activities at the facility that are described in more than one sector in Part IV shall comply on a discharge-by-discharge basis with all applicable effluent limitations from each sector.

(b) Permittees shall monitor the discharges for the presence of the pollutant subject to the effluent limitation at least once during each of the monitoring periods after coverage under the permit begins. Monitoring commences begins with the first full monitoring period after the owner is granted coverage under the permit. Monitoring periods are specified in Part I A 2. The substantially identical outfall monitoring provisions (Part I A 2 f) are not available for numeric effluent limits monitoring.

(c) Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C, and retained in accordance with Part II B.

TABLE 70-2 STORMWATER-SPECIFIC EFFLUENT LIMITATION GUIDELINES
Effluent Limitation Guideline	Sectors with Affected Facilities
Runoff from material storage piles at cement manufacturing facilities (40 CFR Part 411 Subpart C (established February 20, 1974))	E
Contaminated runoff from phosphate fertilizer manufacturing facilities (40 CFR Part 418 Subpart A (established April 8, 1974))	C
Coal pile runoff at steam electric generating facilities (40 CFR Part 423 (established November 19, 1982))	O
Discharges resulting from spray down or intentional wetting of logs at wet deck storage areas (40 CFR Part 429, Subpart I (established January 26, 1981))	A
Runoff from asphalt emulsion facilities (40 CFR Part 443 Subpart A (established July 24, 1975))	D
Runoff from landfills (40 CFR Part 445, Subpart A and B (established January 19, 2000))	K and L
Discharges from airport deicing operations (40 CFR Part 449 (established May 16, 2012))	Facilities subject to the effluent limitation guidelines in 40 CFR Part 449 are not authorized under this permit may be covered under Sector AD.

(2) Facilities subject to coal pile runoff monitoring.

(a) Facilities with discharges of stormwater from coal storage piles shall comply with the limitations and monitoring requirements of Table 70-3 for all discharges containing the coal pile runoff, regardless of the facility's sector of industrial activity.

(b) Permittees shall monitor such the stormwater discharges at least once during each of the monitoring periods after coverage under the permit begins. Monitoring commences begins with the first full monitoring period after the owner is granted coverage under the permit. Monitoring periods are specified in Part I A 2. The substantially identical outfall monitoring provisions (Part I A 2 f) are not available for coal pile numeric effluent limits monitoring.

(c) The coal pile runoff shall not be diluted with other stormwater or other flows in order to meet this limitation.

(d) If a 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.

(e) Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C, and retained in accordance with Part II B.

TABLE 70-3 NUMERIC LIMITATIONS FOR COAL PILE RUNOFF
Parameter	Limit	Monitoring Frequency	Sample Type
Total Suspended Solids (TSS)	50 mg/l, max.	1/6 months	Grab
pH	6.0 min. - 9.0 max.	1/6 months	Grab

(3) Facilities discharging to an impaired water with an approved TMDL wasteload allocation. Owners of facilities that are a source of the specified pollutant of concern to waters for which a TMDL wasteload allocation has been approved prior to by the U.S. Environmental Protection Agency (EPA) before the term of this permit will be notified as such by the department when they are approved for coverage under the general permit.

(a) Upon written notification from the department, facilities permittees shall monitor the discharges for the pollutant subject to TMDL wasteload allocations shall be required to monitor such discharges to evaluate compliance with the TMDL requirements. (b) Permittees shall monitor the discharges for the pollutant subject to the TMDL wasteload allocation once every six months after coverage under the permit begins, unless otherwise another sampling frequency is determined by the department for polychlorinated biphenyls (PCBs). Monitoring commences begins with the first full monitoring period after the owner is granted coverage under the permit. Monitoring periods are specified in Part I A 2.

(c) (b) Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C, and retained in accordance with Part II B.

(d) (c) If the pollutant subject to the TMDL wasteload allocation is below the quantitation level in all of the samples from the first four monitoring periods (i.e., the first two years of coverage under the permit), the permittee may request to the board department in writing that further sampling be discontinued, unless the TMDL has specific instructions to the contrary (in which case those instructions shall be followed). The laboratory certificate of analysis shall be submitted with the request. If approved, documentation of this shall be kept with the SWPPP.

If the pollutant subject to the TMDL wasteload allocation is above the quantitation level in any of the samples from the first four monitoring periods, the permittee shall continue the scheduled TMDL monitoring throughout the term of the permit. Applicable sampling data collected during the 2019 industrial stormwater general permit term may be used to satisfy all or part of the four monitoring periods requirement.

(d) Upon written notification from the department, facilities exceeding the TMDL wasteload allocation shall prepare and submit a pollutant minimization plan (PMP) designed to investigate the location and potential reduction of sources in the facility's stormwater discharges. The PMP shall be developed and submitted to the department for approval within 180 days of the receipt of notification from the department. The PMP shall include the following items, as appropriate:

(i) Facility contact for the contents of the PMP and any activities associated with the PMP;

(ii) A proposed implementation schedule for minimization activities and prospective milestones;

(iii) Proposed actions for known or probable sources;

(iv) Proposed action to find and control unknown sources;

(v) A summary of any previous minimization activities; and

(vi) Information on continuing assessment of progress, which may include establishment of criteria to evaluate whether the location and potential reduction of sources have been addressed.

(4) Facilities discharging to an impaired water without an approved TMDL wasteload allocation. Owners of facilities that discharge to waters listed as impaired in the 2016 2022 Final 305(b)/303(d) Water Quality Assessment Integrated Report, and for which a TMDL wasteload allocation has not been approved prior to before the term of this permit, will be notified as such by the department when they are approved for coverage under the general permit.

(a) Upon written notification from the department, facilities discharging to an impaired water without an approved TMDL wasteload allocation shall be required to monitor such discharges for the pollutants that caused the impairment.

(b) Permittees permittees shall monitor the discharges for all pollutants for which the waterbody is impaired, and for which a standard analytical method exists, at least once during each of the monitoring periods every six months after coverage under the permit begins, unless otherwise determined by the department for polychlorinated biphenyls (PCBs). Monitoring commences begins with the first full monitoring period after the owner is granted coverage under the permit. Monitoring periods are specified in Part I A 2.

(c) (b) If the pollutant for which the waterbody is impaired is suspended solids, turbidity, or sediment, or sedimentation, monitor for total suspended solids (TSS). If the pollutant for which the waterbody is impaired is expressed in the form of an indicator or surrogate pollutant, 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 modifications, impaired hydrology, or temperature. Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C, and retained in accordance with Part II B.

(d) (c) If the pollutant for which the water is impaired is below the quantitation level in the discharges from the facility, or it is above the quantitation level but its presence is caused solely by natural background sources, the permittee may request to the board department in writing that further impaired water monitoring be discontinued. The laboratory certificate of analysis shall be submitted with the request. If approved, documentation of this shall be kept with the SWPPP.

To support a determination that the pollutant's presence is caused solely by natural background sources, the following documentation shall be submitted with the request and kept with the SWPPP: (i) an explanation of why it is believed that the presence of the impairment pollutant in the facility's discharge is not related to the activities at the facility; and (ii) data or studies that tie the presence of the impairment pollutant in the facility's discharge to natural background sources in the watershed. Natural background pollutants include those substances that are naturally occurring in soils or groundwater. Natural background pollutants do not include legacy pollutants from earlier activity at the facility's site, or pollutants in run-on from neighboring sources that are not naturally occurring.

2. Monitoring instructions.

a. Collection and analysis of samples. Sampling requirements shall be assessed on an outfall by outfall basis. Samples shall be collected and analyzed in accordance with the requirements of Part II A.

b. When and how to sample. A minimum of one grab sample shall be taken from the discharge associated with industrial activity resulting from a storm event that results in a discharge from the site (defined as a "measurable storm event"), providing the interval from the preceding measurable storm event discharge is at least 72 hours. The 72-hour storm interval is waived if the permittee is able to document that less than a 72-hour interval is representative for local storm events during the sampling period. In the case of snowmelt, the monitoring shall be performed at a time when a measurable discharge occurs at the site. For discharges from a stormwater management structure, the monitoring shall be performed at a time when a measurable discharge occurs from the structure.

The grab sample shall be taken during the first 30 minutes of the discharge. If it is not practicable to take the sample during the first 30 minutes, the sample may be taken during the first three hours of the discharge, provided that the permittee explains why a grab sample during the first 30 minutes was impracticable. This information shall be submitted in the department's electronic discharge monitoring report (e-DMR) system, and maintained with the SWPPP. If the sampled discharge commingles with process or nonprocess water, the permittee shall attempt to sample the stormwater discharge before it mixes with the nonstormwater.

c. Storm event data. For each monitoring event (except snowmelt monitoring), along with the monitoring results, the permittee shall identify the date and duration (in hours) of the storm events event sampled; rainfall total (in inches) of the storm event that generated the sampled runoff; and the duration interval between the storm event sampled and the end of the previous measurable storm event discharge. For snowmelt monitoring, the permittee shall identify the date of the sampling event.

d. Monitoring periods.

(1) Quarterly visual monitoring. The quarterly visual examinations shall be made at least once in each of the following three-month periods each year of permit coverage: January through March, April through June, July through September, and October through December.

(2) Benchmark monitoring, effluent limitation monitoring, and impaired waters monitoring (for waters both with and without an approved TMDL). Monitoring shall be conducted at least once in each of the following semiannual periods each year of permit coverage: January through June, and July through December.

e. Documentation explaining a facility's inability to obtain a sample (including dates and times the outfalls were viewed or sampling was attempted), of no rain event, or of deviation from the "measurable" storm event requirements shall be 72-hour storm interval shall be submitted with the e-DMR and maintained with the SWPPP. Acceptable documentation includes National Climatic Data Center (NCDC) weather station data, local weather station data, facility rainfall logs, and other appropriate supporting data.

f. Representative outfalls - substantially identical discharges. If the facility has two or more outfalls that discharge substantially identical effluents, based on similarities of the industrial activities, significant materials, size of drainage areas, and stormwater management practices occurring within the drainage areas of the outfalls, frequency of discharges, and stormwater management practices occurring within the drainage areas of the outfalls, the permittee may conduct monitoring on the effluent of just one of the outfalls and report that the observations also apply to the substantially identical outfall or outfalls. The substantially identical outfall monitoring provisions apply to quarterly visual monitoring, benchmark monitoring, and impaired waters monitoring (both those with and without an approved TMDL). The substantially identical outfall monitoring provisions are not available for numeric effluent limits monitoring. The permittee shall include the following information in the SWPPP:

(1) The locations of the outfalls;

(2) An evaluation, including available monitoring data, indicating the outfalls are expected to discharge substantially identical effluents, including evaluation of monitoring data where available; and

(3) An estimate of the size of each outfall's drainage area in acres.

3. Adverse climatic conditions waiver. When adverse weather conditions prevent the collection of samples, a substitute sample may be taken during a qualifying storm event in the next monitoring period. Adverse weather conditions are those that are dangerous or create inaccessibility for personnel, staff and may include such things as local flooding, high winds, electrical storms, or situations that otherwise make sampling impracticable, such as (e.g., drought or extended frozen conditions). Unless specifically stated otherwise, this waiver may be applied to any monitoring required under this permit. Narrative documentation of conditions necessitating the use of the waiver shall be kept with the SWPPP.

4. Inactive and unstaffed sites (including temporarily inactive sites).

a. A waiver of the quarterly visual monitoring, routine facility inspections, and monitoring requirements (including benchmark, effluent limitation, and impaired waters monitoring) may be granted by the board department at a facility that is both inactive and unstaffed, as long as the facility remains inactive and unstaffed and there are no industrial materials or activities exposed to stormwater. The owner of such a the facility is only required to conduct an annual routine site inspection in accordance with the requirements in Part III B 5.

b. An inactive and unstaffed sites waiver request shall be submitted to the board department for approval and shall include the name of the facility; the facility's VPDES general permit registration number; a contact person, phone telephone number, and email address; the reason for the request; and the date the facility became or will become inactive and unstaffed. The waiver request shall be signed and certified in accordance with Part II K. If this waiver is granted, a copy of the request and the board's department's written approval of the waiver shall be maintained with the SWPPP.

c. If circumstances change and industrial materials or activities become exposed to stormwater, or the facility becomes either active or staffed, the permittee shall notify the department within 30 days, and all quarterly visual monitoring, routine facility inspections, and monitoring requirements shall be resumed immediately.

d. The board department retains the right to revoke this waiver when it is determined that the discharge is causing, has a reasonable potential to cause, or contributes to a water quality standards violation.

e. Inactive and unstaffed facilities covered under Sector G (Metal Mining) and Sector H (Coal Mines and Coal Mining-Related Facilities) are not required to meet the "no industrial materials or activities exposed to stormwater" standard to be eligible for this waiver, consistent with the conditional exemption requirements established in Part IV Sector G and Part IV Sector H.

5. Reporting monitoring results.

a. Reporting to the department. The permittee shall follow the reporting requirements and deadlines below in Table 70-4 for the types of monitoring that apply to the facility:

TABLE 70-4 MONITORING REPORTING REQUIREMENTS
Semiannual Monitoring	Submit the results by January 10 and by July 10.
Quarterly Visual Monitoring	Retain results with SWPPP - do not submit unless requested to do so by the department.

Permittees shall submit results for each outfall associated with industrial activity according to the requirements of Part II C.

b. Significant digits. The permittee shall report at least the same number of significant digits as a numeric effluent limitation or TMDL wasteload allocation for a given parameter; otherwise, at least two significant digits shall be reported for a given parameter. Regardless of the rounding convention used by the permittee (i.e., five always rounding up or to the nearest even number), the permittee shall use the convention consistently and shall ensure that consulting laboratories employed by the permittee use the same convention.

6. Corrective actions.

a. Data exceeding benchmark concentration values.

(1) If the benchmark monitoring result exceeds the benchmark concentration value for that parameter, the permittee shall review the SWPPP and modify it as necessary to address any deficiencies that caused the exceedance. Revisions to the SWPPP shall be completed within 60 days after an exceedance is discovered. When control measures need to be modified or added (distinct from regular preventive maintenance of existing control measures described in Part III C), implementation shall be completed before the next anticipated storm event if possible, but no later than 60 days after the exceedance is discovered, or as otherwise provided or approved by the department. In cases where construction is necessary to implement control measures, the permittee shall include a schedule in the SWPPP that provides for the completion of the control measures as expeditiously as practicable, but no later than three years after the exceedance is discovered. Where a construction compliance schedule is included in the SWPPP, the SWPPP shall include appropriate nonstructural and temporary controls to be implemented in the affected portions of the facility prior to completion of the permanent control measure. Any control measure modifications shall be documented and dated, and retained with the SWPPP, along with the amount of time taken to modify the applicable control measures or implement additional control measures.

(2) Natural background pollutant levels. If the concentration of a pollutant exceeds a benchmark concentration value, and the permittee determines that exceedance of the benchmark is attributable solely to the presence of that pollutant in the natural background, corrective action is not required provided that:

(a) The concentration of the benchmark monitoring result is less than or equal to the concentration of that pollutant in the natural background;

(b) The permittee documents and maintains with the SWPPP the supporting rationale for concluding that benchmark exceedances are in fact attributable solely to natural background pollutant levels. The supporting rationale shall include any data previously collected by the facility or others (including literature studies) that describe the levels of natural background pollutants in the facility's stormwater discharges; and

(c) The permittee notifies the department on the benchmark monitoring DMR that the benchmark exceedances are attributable solely to natural background pollutant levels.

Natural background pollutants include those substances that are naturally occurring in soils or groundwater. Natural background pollutants do not include legacy pollutants from earlier activity on the facility's site, or pollutants in run-on from neighboring sources that are not naturally occurring.

b. Corrective actions. a. The permittee shall take corrective action whenever:

(1) Routine facility inspections, inspections by local, state or federal officials, or any other process, observation or event result in a determination that modifications to the stormwater control measures are necessary to meet the permit requirements;

(2) There is any exceedance of an effluent limitation (including coal pile runoff), TMDL wasteload allocation, or a reduction required by a local ordinance established by a municipality to meet Chesapeake Bay TMDL requirements; or

(3) The department determines, or the permittee becomes aware, that the stormwater control measures are not stringent enough for the discharge to meet applicable water quality standards.; or

(4) Benchmark monitoring results exceed the benchmark concentration value for a parameter.

The permittee shall review the SWPPP and modify it as necessary to address any deficiencies. Revisions to the SWPPP shall be completed within 60 days following the discovery of the deficiency. When control measures need to be modified or added (distinct from regular preventive maintenance of existing control measures described in Part III C), implementation shall be completed before the next anticipated storm event if possible, but no later than 60 days after the deficiency is discovered, or as otherwise provided or approved by the department. In cases where construction is necessary to implement control measures, the permittee shall include a schedule in the SWPPP that provides for the completion of the control measures as expeditiously as practicable, but no later than three years after the deficiency is discovered. Where a construction compliance schedule is included in the SWPPP, the SWPPP shall include appropriate nonstructural and temporary controls to be implemented in the affected portion of the facility prior to before completion of the permanent control measure. The amount of time taken to modify a control measure or implement additional control measures shall be documented in the SWPPP. Any corrective actions taken shall be documented and retained with the SWPPP. Reports of corrective actions shall be signed in accordance with Part II K. Any control measure modifications shall be dated and document the amount of time taken to modify the applicable control measures or implement additional control measures.

b. Natural background pollutant levels. If the concentration of a pollutant exceeds a benchmark concentration value and the permittee determines that exceedance of the benchmark is attributable solely to the presence of that pollutant in the natural background, corrective action is not required provided that:

(1) The concentration of the benchmark monitoring result is less than or equal to the concentration of that pollutant in the natural background;

(2) The permittee documents and maintains with the SWPPP the supporting rationale for concluding that benchmark exceedances are in fact attributable solely to natural background pollutant levels. The supporting rationale shall include any data previously collected by the facility or others (including literature studies) that describe the levels of natural background pollutants in the facility's stormwater discharges; and

(3) The permittee notifies the department on the benchmark monitoring DMR that the benchmark exceedances are attributable solely to natural background pollutant levels. Natural background pollutants include those substances that are naturally occurring in soils or groundwater. Natural background pollutants do not include legacy pollutants from earlier activity on the facility's site, or pollutants in run-on from neighboring sources that are not naturally occurring.

c. Follow-up reporting. If at any time monitoring results indicate show that discharges from the facility exceed an effluent limitation or a TMDL wasteload allocation, or the department determines that discharges from the facility are causing or contributing to an exceedance of a water quality standard, immediate steps shall be taken to eliminate the exceedances in accordance with the above Part I A 6 b (Corrective actions). Within 30 calendar days of implementing the relevant corrective action, an exceedance report shall be submitted to the department and shall be signed in accordance with Part II K. The following information shall be included in the report:

(1) General permit registration number;

(2) Facility name and address;

(3) Receiving water for each outfall exceeding an effluent limitation of TMDL wasteload allocation;

(4) Monitoring data from the event being reported;

(5) A narrative description of the situation;

(6) A description of actions taken since the event was discovered and steps taken to minimize to the extent feasible pollutants in the discharge; and

(7) A local facility contact name, email address, and phone number.

B. Special conditions.

1. Authorized nonstormwater discharges. Except as provided in this section or in Part IV (9VAC25-151-90 et seq.), all discharges covered by this permit shall be composed entirely of stormwater. The following nonstormwater discharges are authorized by this permit:

a. Discharges from emergency firefighting activities or firefighting training activities managed in a manner to avoid an instream impact in accordance with § 9.1-207.1 of the Code of Virginia;

b. Fire hydrant flushings, managed in a manner to avoid an instream impact;

c. Potable water, including water line flushings, managed in a manner to avoid an instream impact;

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

e. Irrigation drainage;

f. Landscape watering provided all pesticides, herbicides, and fertilizer have been applied in accordance with the approved labeling;

g. Routine external building washdown that does not use detergents or hazardous cleaning products and is managed in a manner to avoid an instream impact;

h. Pavement wash waters where no detergents or hazardous cleaning products are used and no spills or leaks of toxic or hazardous materials have occurred (unless all spilled material has been removed). Pavement wash waters shall be managed in a manner to avoid an instream impact;

i. Uncontaminated groundwater or spring water;

j. Foundation or footing drains where flows are not contaminated with process materials; and

k. Incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of the facility, but not intentional discharges from the cooling tower (e.g., "piped" cooling tower blowdown or drains).

All other nonstormwater discharges are not authorized and shall either be eliminated or covered under a separate VPDES permit.

2. Releases of hazardous substances or oil in excess of reportable quantities. The discharge of hazardous substances or oil in the stormwater discharges from the facility shall be prevented or minimized in accordance with the SWPPP for the facility. This permit does not authorize the discharge of hazardous substances or oil resulting from an on-site spill. This permit does not relieve the permittee of the reporting requirements of 40 CFR Part 110, 40 CFR Part 117, and 40 CFR Part 302 or § 62.1-44.34:19 of the Code of Virginia.

Where a 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:

a. The permittee is required to notify the department in accordance with the requirements of Part II G as soon as he has knowledge of the discharge;

b. Where a release enters an MS4, the permittee shall also notify the owner of the MS4; and

c. The SWPPP required under Part III shall be reviewed to identify measures to prevent the reoccurrence of such the releases and to respond to such the releases, and the SWPPP shall be modified where appropriate.

3. Colocated industrial activity. If the facility has industrial activities occurring on-site which are described by any of the activities in Part IV of the permit (9VAC25-151-90 et seq.), those industrial activities are considered to be colocated industrial activities. Stormwater discharges from colocated industrial activities are authorized by this permit, provided that the permittee complies with any and all additional SWPPP and monitoring requirements from Part IV applicable to that particular colocated industrial activity. The permittee shall be responsible for additional SWPPP and monitoring requirements applicable to the colocated industrial activity by examining the narrative descriptions of all discharges covered under this section.

4. The stormwater discharges authorized by this permit may be combined with other sources of stormwater which that are not required to be covered under a VPDES permit, so long as the combined discharge is in compliance with this permit.

5. There shall be no discharge of waste, garbage, or floating debris in other than trace amounts.

6. Approval for coverage under this general permit does not relieve the permittee of the responsibility to comply with any other applicable federal, state, or local statute, ordinance, or regulation.

7. Discharges to waters subject to TMDL wasteload allocations. Owners of facilities that are a source of the specified pollutant of concern to waters for which a TMDL wasteload allocation has been approved prior to by EPA before the term of this permit shall incorporate measures and controls into the SWPPP required by Part III that are consistent with the assumptions and requirements of the TMDL. The department will provide written notification to the owner that a facility is subject to the TMDL requirements. The facility's SWPPP shall specifically address any conditions or requirements included in the TMDL that are applicable to discharges from the facility. If the TMDL establishes a specific numeric wasteload allocation that applies to discharges from the facility, the owner shall perform any required monitoring in accordance with Part I A 1 c (3), and implement control measures designed to meet that allocation.

8. Discharges to waters subject to the Chesapeake Bay TMDL.

a. Owners of facilities in the Chesapeake Bay watershed shall monitor their discharges for total suspended solids (TSS), total nitrogen (TN), and total phosphorus (TP) to characterize the contributions from their facility's specific industrial sector for these parameters. Total nitrogen is the sum of total Kjeldahl nitrogen (TKN) and nitrite + nitrate and shall be derived from the results of those tests. After the facility is granted coverage under the permit, samples shall be collected during each of the first four monitoring periods (i.e., the first two years of permit coverage). Monitoring periods are specified in Part I A 2. Samples shall be collected and analyzed in accordance with Part I A 2. Monitoring results shall be reported in accordance with Part I A 5 and Part II C, and retained in accordance with Part II B.

b. Facilities that were covered under the 2014 industrial stormwater general permit shall comply with the following:

(1) Facilities that submitted a Chesapeake Bay TMDL action plan that was approved by the board during the 2014 industrial stormwater general permit term shall continue to implement the approved Chesapeake Bay TMDL action plan during this permit term. An annual report shall be submitted to the department by June 30 of each year describing the progress in meeting the required reductions unless this reporting requirement is waived by the department in accordance with Part I B 8 g. Monitoring in accordance with Part I B 8 a is not required for these facilities during this permit term.

(2) Facilities that completed four samples for TSS, TN, and TP during the 2014 industrial stormwater general permit term shall utilize the procedures in Part I B 8 c (2) to calculate their facility stormwater loads. The permittee shall submit a copy of the calculations and Chesapeake Bay TMDL action plan if required under Part I B 8 f to the department within 60 days of coverage under this general permit.

(3) Facilities that did not complete four samples for TSS, TN, and TP during the 2014 industrial stormwater general permit term shall be subject to completing the monitoring requirements in Part I B 8 a beginning with the first full monitoring period after receiving permit coverage. Calculations and a Chesapeake Bay TMDL action plan if required under Part I B 8 f shall be submitted no later than 90 days following the completion of the fourth monitoring period to the DEQ regional office serving the area where the industrial facility is located on a form provided by the department and maintained with the facility's SWPPP.

(4) Facilities that monitored for TSS, TN, or TP may use the applicable sampling data collected during the 2014 industrial stormwater general permit term to satisfy all or part of the four monitoring periods requirement in accordance with Part I B 8 a.

c. Chesapeake Bay TMDL wasteload allocations and Chesapeake Bay TMDL action plans.

(1) EPA's Chesapeake Bay TMDL (December 29, 2010) includes wasteload allocations for VPDES permitted industrial stormwater facilities as part of the regulated stormwater aggregate load. EPA used data submitted by Virginia with the Phase I Chesapeake Bay TMDL Watershed Implementation Plan, including the number of industrial stormwater permits per county and the number of urban acres regulated by industrial stormwater permits, as part of their development of the aggregate load. Aggregate loads for industrial stormwater facilities were appropriate because actual facility loading data were not available to develop individual facility wasteload allocations.

Virginia estimated the loadings from industrial stormwater facilities using actual and estimated facility acreage information and TP, TN, and TSS loading rates from the Northern Virginia Planning District Commission (NVPDC) Guidebook for Screening Urban Nonpoint Pollution Management Strategies (Annandale, VA November 1979), prepared for the Metropolitan Washington Council of Governments. The loading rates used were as follows:

TP - High (80%) imperviousness industrial; 1.5 lb/ac/yr

TN - High (80%) imperviousness industrial; 12.3 lb/ac/yr

TSS - High (80%) imperviousness industrial; 440 lb/ac/yr

The actual facility area information and the TP, TN, and TSS data collected for this permit will be used by the board to quantify the nutrient and sediment loads from VPDES permitted industrial stormwater facilities.

(2) Calculation of facility loads. The permittee shall analyze the nutrient and sediment data collected in accordance with Part I B 8 a and 8 b to determine if pollution reductions are required for this permit term. The permittee shall average the data collected at the facility for each of the pollutants of concern (POC) (e.g., TP, TN, and TSS) and compare the results to the loading rates for TP, TN, and TSS presented in Part I B 8 c (1).

The following formula may be used to determine the loading rate:

L = 0.226 x P x Pj x (0.05 + (0.9 x Ia)) x C

where:

L = the POC loading rate (lb/acre/year)

P = the annual rainfall (inches/year) - The permittee may use either actual annual average rainfall data for the facility location (in inches/year), the Virginia annual average rainfall of 44.3 inches/year, or another method approved by the board.

Pj = the fraction of annual events that produce runoff - The permittee shall use 0.9 unless the board approves another rate.

Ia = the impervious fraction of the facility impervious area of industrial activity to the facility industrial activity area

C = the POC average concentration of all facility samples (mg/L) - Facilities with multiple outfalls shall calculate a weighted average concentration for each outfall using the drainage area of each outfall.

For total phosphorus and total suspended solids, all daily concentration data below the quantitation level (QL) for the analytical method used shall be treated as half the QL. All daily concentration data equal to or above the QL for the analytical method used shall be treated as it is reported.

For total nitrogen, if none of the daily concentration data for the respective species (i.e., TKN, nitrate, or nitrite) are equal to or above the QL for the respective analytical methods used, the daily TN concentration value reported shall equal one half of the largest QL used for the respective species. If one of the data is equal to or above the QL, the daily TN concentration value shall be treated as that data point is reported. If more than one of the data is above the QL, the daily TN concentration value shall equal the sum of the data points as reported.

d. The permittee shall submit a copy of the calculations to the department within 90 days from the end of the last monitoring period that satisfies the monitoring requirement in Part I B 8 a. Calculations shall be submitted to the DEQ regional office serving the area where the industrial facility is located, on a form provided by the department, and maintained with the facility's SWPPP.

e. Any modification to the facility's industrial acreage or impervious industrial acreage shall require the facility to recalculate facility loading rates. This may require the facility to modify the facility's Chesapeake Bay TMDL action plan or submit a Chesapeake Bay TMDL action plan as appropriate. Any recalculation of facility loading rates or modifications to a Chesapeake Bay TMDL action plan shall be submitted to the department within 90 days of the date on which the permittee completes a site modification. If previous monitoring is no longer representative of the modified facility, monitoring in accordance with Part I B 8 a shall commence within 90 days of the modification and the revised calculations and Chesapeake Bay TMDL action plan if required under Part I B 8 f shall be submitted no later than 90 days following completion of the fourth monitoring period.

f. Chesapeake Bay TMDL action plan requirements. If the calculated facility loading rate for TP, TN, or TSS is above the loading rates for TP, TN, or TSS presented in Part I B 8 c (1), then the permittee shall develop and submit a Chesapeake Bay TMDL action plan to the department.

The Chesapeake Bay TMDL action plan shall be submitted on a form provided by the department to the regional office serving the area where the industrial facility is located within 90 days following the completion of the fourth monitoring period. A copy of the current Chesapeake Bay TMDL action plan and all facility loading rate calculations shall be maintained with the facility's SWPPP. The Chesapeake Bay TMDL action plan shall include:

(1) A determination of the total pollutant load reductions for TP, TN, and TSS (as appropriate) necessary to reduce the annual loads from industrial activities. This shall be determined by multiplying the industrial acreage times the difference between the TMDL loading rates listed in Part I B 8 c (1) and the actual facility loading rates calculated in accordance with Part I B 8 c (2). The reduction applies to the total difference calculated for each pollutant of concern;

(2) The means and methods, such as management practices and retrofit programs, that will be utilized to meet the required reductions determined in Part I B 8 f (1) and a schedule to achieve those reductions by June 30, 2024. The schedule should include annual milestones to demonstrate the ongoing progress in meeting those reductions; and

(3) The permittee may consider utilization of any pollutant trading or offset program in accordance with §§ 62.1-44.19:20 through 62.1-44.19:23 of the Code of Virginia, governing trading and offsetting, to meet the required reductions.

g. A permittee required to develop and implement a Chesapeake Bay TMDL Action Plan shall submit an annual report to the department by June 30 of each year describing the progress in meeting the required reductions.

h. Chesapeake Bay TMDL action plan annual reporting waiver. Upon implementation of the facility's Chesapeake Bay TMDL action plan, permittees may submit a waiver for the annual reporting requirements. The waiver request shall be submitted for board approval to the DEQ regional office serving the area where the industrial facility is located on a form provided by the department. Annual reporting requirements will be in effect until the permittee receives notice from the department that the waiver has been approved. A copy of the waiver approval shall be maintained with the SWPPP. The waiver may be revoked for cause by the board. A waiver request may be approved by the board once the permittee demonstrates that they have achieved all of the required pollutant reductions calculated under Part I B 8 f (1). Pollutant reductions may be achieved using a combination of the following alternatives:

(1) Reductions provided by one or more of the BMPs from the Virginia Stormwater BMP Clearinghouse listed in 9VAC25-870-65, approved BMPs found on the Virginia Stormwater Clearinghouse website, or BMPs approved by the Chesapeake Bay Program. Any BMPs implemented to provide the required pollutant reductions shall be incorporated in the SWPPP and be permanently maintained by the permittee;

(2) Implementation of site-specific BMPs followed by a minimum of four stormwater samples collected in accordance with sampling requirements in Part I B 8 a that demonstrate pollutant loadings have been reduced below those calculated under Part I B 8 c. Any BMPs implemented to provide the required pollutant reductions shall be incorporated in the SWPPP and be permanently maintained by the permittee; or

(3) Acquisition of nonpoint source credits certified by the board as perpetual in accordance with § 62.1-44.19:20 of the Code of Virginia.

9. 8. Discharges through a regulated MS4 to waters subject to the Chesapeake Bay TMDL. In addition to the requirements of this permit, any facility with industrial activity stormwater discharges through a regulated MS4 that is notified by the MS4 operator that the locality has adopted ordinances to meet the Chesapeake Bay TMDL shall incorporate measures and controls into its SWPPP to comply with applicable local TMDL ordinance requirements.

10. 9. Expansion of facilities that discharge to waters subject to the Chesapeake Bay TMDL. Virginia's Phase I Chesapeake Bay TMDL Watershed Implementation Plan (November 29, 2010), states that the wasteloads from any expansion of an existing permitted facility discharging stormwater in the Chesapeake Bay watershed cannot exceed the nutrient and sediment loadings that were discharged from the expanded portion of the land prior to the land being developed for the expanded industrial activity.

a. For any industrial activity area expansions (i.e., construction activities, including clearing, grading, and excavation activities) that commence begin on or after July 1, 2019 2024, (the effective date of this permit), the permittee shall document in the SWPPP the information and calculations used to determine the nutrient and sediment loadings discharged from the expanded land area prior to before the land being was developed, and the measures and controls that were employed to meet the no net increase of stormwater nutrient and sediment load as a result of the expansion of the industrial activity. Any land disturbance that is exempt from permitting under the VPDES construction stormwater general permit regulation (9VAC25-880) is exempt from this requirement.

b. The permittee may use the VSMP water quality design criteria to meet the requirements of Part I B 10 a. Under this criteria, the total phosphorus load shall not exceed the greater of (i) the total phosphorus load that was discharged from the expanded portion of the land prior to before the land being developed for the industrial activity or (ii) 0.41 pounds per acre per year. Compliance with the water quality design criteria may be determined utilizing the Virginia Runoff Reduction Method or another equivalent methodology approved by the board department. Design specifications and pollutant removal efficiencies for specific BMPs can be found on the Virginia Stormwater BMP Clearinghouse website.

c. The permittee may consider utilization of any pollutant trading or offset program in accordance with §§ 62.1-44.19:20 through 62.1-44.19:23 of the Code of Virginia, governing trading and offsetting, to meet the no net increase requirement.

11. 10. Water quality protection. The discharges authorized by this permit shall be controlled as necessary to meet applicable water quality standards. The board department expects that compliance with the conditions in this permit will control discharges as necessary to meet applicable water quality standards.

12. 11. Adding or deleting stormwater outfalls. The permittee may add new or delete existing stormwater outfalls at the facility as necessary and appropriate. The permittee shall update the SWPPP and notify the department of all outfall changes within 30 days of the change. The permittee shall submit a copy of the updated SWPPP site map with this notification.

13. 12. Antidegradation requirements for new or increased discharges to high quality waters. Facilities that add new outfalls, or increase their discharges from existing outfalls that discharge directly to high quality waters designated under Virginia's water quality standards antidegradation policy under 9VAC25-260-30 A 2 may be notified by the department that additional control measures, or other permit conditions are necessary to comply with the applicable antidegradation requirements, or may be notified that an individual permit is required in accordance with 9VAC25-31-170 B 3.

14. 13. Termination of permit coverage.

a. The owner may terminate coverage under this general permit by filing a complete notice of termination with the department. The notice of termination may be filed after one or more of the following conditions have been met:

(1) Operations have ceased at the facility and there are no longer discharges of stormwater associated with industrial activity from the facility;

(2) A new owner has assumed responsibility for the facility. A notice of termination does not have to be submitted if a VPDES Change of Ownership Agreement Form has been submitted;

(3) All stormwater discharges associated with industrial activity have been covered by an individual VPDES permit; or

(4) Termination of coverage is being requested for another reason, provided the board department agrees that coverage under this general permit is no longer needed.

b. The notice of termination shall contain the following information:

(1) Owner's name, mailing address, telephone number, and email address (if available);

(2) Facility name and location;

(3) VPDES industrial stormwater general permit registration number;

(4) The basis for submitting the notice of termination, including:

(a) A statement indicating that a new owner has assumed responsibility for the facility;

(b) A statement indicating that operations have ceased at the facility, and there are no longer discharges of stormwater associated with industrial activity from the facility;

(c) A statement indicating that all stormwater discharges associated with industrial activity have been covered by an individual VPDES permit; or

(d) A statement indicating that termination of coverage is being requested for another reason and a description of the reason; and

(5) The following certification: "I certify under penalty of law that all stormwater discharges associated with industrial activity from the identified facility that are authorized by this VPDES general permit have been eliminated, or covered under a VPDES individual permit, or that I am no longer the owner of the industrial activity, or permit coverage should be terminated for another reason listed above. I understand that by submitting this notice of termination, that I am no longer authorized to discharge stormwater associated with industrial activity in accordance with the general permit, and that discharging pollutants in stormwater associated with industrial activity to surface waters is unlawful where the discharge is not authorized by a VPDES permit. I also understand that the submittal of this notice of termination does not release an owner from liability for any violations of this permit or the Clean Water Act."

c. The notice of termination shall be signed in accordance with Part II K.

d. The notice of termination shall be submitted to the DEQ regional office serving the area where the industrial facility is located.

Part II

Conditions Applicable to All VPDES Permits

A. Monitoring.

1. Samples and measurements taken as required by this permit shall be representative of the monitored activity.

2. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this permit.

3. The permittee shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements.

4. Samples taken as required by this permit shall be analyzed in accordance with 1VAC30-45 (Certification for Noncommercial Environmental Laboratories) or 1VAC30-46 (Accreditation for Commercial Environmental Laboratories).

B. Records.

1. Records of monitoring information shall include:

a. The date, exact place, and time of sampling or measurements;

b. The individuals who performed the sampling or measurements;

c. The dates and times analyses were performed;

d. The individuals who performed the analyses;

e. The analytical techniques or methods used; and

f. The results of such the analyses.

2. The permittee shall retain copies of the SWPPP, including any modifications made during the term of this permit, records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this permit, and records of all data used to complete the registration statement for this permit, for a period of at least three years from the date that coverage under this permit expires or is terminated. This period of retention shall be extended automatically during the course of any unresolved litigation regarding the regulated activity or regarding control standards applicable to the permittee, or as requested by the board department.

C. Reporting monitoring results.

1. The permittee shall submit the results of the monitoring required by this permit not later than the 10th day of the month after monitoring takes place, unless another reporting schedule is specified elsewhere in this permit. Monitoring results shall be submitted to the department's regional office.

2. Monitoring results shall be reported in the department's electronic discharge monitoring report (e-DMR) system. All reports and forms submitted in compliance with this permit shall be submitted electronically by the permittee in accordance with 9VAC25-31-1020.

3. If the permittee monitors any pollutant specifically addressed by this permit more frequently than required by this permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in e-DMR or reporting form specified by the department.

4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this permit.

D. Duty to provide information. The permittee shall furnish to the department, within a reasonable time, any information which that the board department may request to determine whether cause exists for modifying, revoking and reissuing, or terminating coverage under this permit or to determine compliance with this permit. The board department may require the permittee to furnish, upon on request, such plans, specifications, and other pertinent information as may be necessary to determine the effect of the wastes from the discharge on the quality of state waters, or such other information as may be necessary to accomplish the purposes of the State Water Control Law. The permittee shall also furnish to the department upon on request, copies of records required to be kept by this permit.

E. Compliance schedule reports. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit shall be submitted no later than 14 days following each schedule date.

F. Unauthorized discharges. Except in compliance with this permit, or another permit issued by the board department, it shall be unlawful for any person to:

1. Discharge into state waters sewage, industrial wastes, other wastes, or any noxious or deleterious substances; or

2. Otherwise alter the physical, chemical, or biological properties of such state waters and make them detrimental to the public health, or to animal or aquatic life, or to the use of such state waters for domestic or industrial consumption, or for recreation, or for other uses.

G. Reports of unauthorized discharges. Any permittee who discharges or causes or allows a discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance into or upon state waters in violation of Part II F; or who discharges or causes or allows a discharge that may reasonably be expected to enter state waters in violation of Part II F, shall notify the department of the discharge immediately upon discovery of the discharge, but in no case later than 24 hours after said the discovery. A written report of the unauthorized discharge shall be submitted to the department within five days of discovery of the discharge. The written report shall contain:

1. A description of the nature and location of the discharge;

2. The cause of the discharge;

3. The date on which the discharge occurred;

4. The length of time that the discharge continued;

5. The volume of the discharge;

6. If the discharge is continuing, how long it is expected to continue;

7. If the discharge is continuing, what the expected total volume of the discharge will be; and

8. Any steps planned or taken to reduce, eliminate, and prevent a recurrence of the present discharge or any future discharges not authorized by this permit.

Discharges reportable to the department under the immediate reporting requirements of other regulations are exempted from this requirement.

H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a bypass or upset should occur from a treatment works and the discharge enters or could be expected to enter state waters, the permittee shall promptly notify, in no case later than 24 hours, the department by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The permittee shall reduce the report to writing and shall submit it to the department within five days of discovery of the discharge in accordance with Part II I 1 b. Unusual and extraordinary discharges include any discharge resulting from:

1. Unusual spillage of materials resulting directly or indirectly from processing operations;

2. Breakdown of processing or accessory equipment;

3. Failure or taking out of service some or all of the treatment works; and

4. Flooding or other acts of nature.

I. Reports of noncompliance.

1. The permittee shall report any noncompliance that may adversely affect state waters or may endanger public health.

a. An oral A report shall be provided within 24 hours from the time the permittee becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under Part II I:

(1) Any unanticipated bypass; and

(2) Any upset which that causes a discharge to surface waters.

b. A written report shall be submitted within five days and shall contain:

(1) A description of the noncompliance and its cause;

(2) The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and

(3) Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.

The board department may waive the written report on a case-by-case basis for reports of noncompliance under Part II I if the oral report has been received within 24 hours and no adverse impact on state waters has been reported.

2. The permittee shall report all instances of noncompliance not reported under Part II I 1 in writing at the time the next monitoring reports are submitted. The reports shall contain the information listed in Part II I 1.

3. The immediate (within 24 hours) reports required in Part II G, H and I may shall be made to the department's regional office. Reports may be made by telephone, FAX, or online at http://www.deq.virginia.gov/Programs/PollutionResponsePreparedness/MakingaReport.aspx https://www.deq.virginia.gov/get-involved/pollution-response. For reports outside normal working hours, a message may be left and this shall fulfill the immediate reporting requirement the online portal shall be used. For emergencies, call the Virginia Department of Emergency Management maintains a 24-hour telephone service Management's Emergency Operations Center (24-hours) at 1-800-468-8892.

J. Notice of planned changes.

1. The permittee shall give notice to the department as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only when:

a. The permittee plans alteration or addition to any building, structure, facility, or installation from which there is or may be a discharge of pollutants, the construction of which commenced began:

(1) After promulgation of standards of performance under § 306 of the Clean Water Act which are applicable to such the source; or

(2) After proposal of standards of performance in accordance with § 306 of the Clean Water Act which that are applicable to such the source, but only if the standards are promulgated in accordance with § 306 within 120 days of their proposal;

b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which that are subject neither to effluent limitations nor to notification requirements specified elsewhere in this permit; or

c. The alteration or addition results in a significant change in the permittee's sludge use or disposal practices, and such the alteration, addition, or change may justify the application of permit conditions that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reported pursuant to an approved land application plan.

2. The permittee shall give advance notice to the department of any planned changes in the permitted facility or activity which that may result in noncompliance with permit requirements.

K. Signatory requirements.

1. Registration statement. All registration statements shall be signed as follows:

a. For a corporation: by a responsible corporate officer. For the purpose of this section, a responsible corporate officer means (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy-making or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure ensure long-term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit registration requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures;

b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or

c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a public agency includes (i) the chief executive officer of the agency, or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency.

2. Reports, etc. All reports required by permits, and other information requested by the board department shall be signed by a person described in Part II K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if:

a. The authorization is made in writing by a person described in Part II K 1;

b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as (e.g., the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company). A duly authorized representative may thus be either a named individual or any individual occupying a named position; and

c. The written authorization is submitted to the department.

3. Changes to authorization. If an authorization under Part II K 2 is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of Part II K 2 shall be submitted to the department prior to before or together with any reports, or information to be signed by an authorized representative.

4. Certification. Any person signing a document under Part II K 1 or 2 shall make the following certification:

"I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

L. Duty to comply. The permittee shall comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the State Water Control Law and the Clean Water Act, except that noncompliance with certain provisions of this permit may constitute a violation of the State Water Control Law but not the Clean Water Act. Permit noncompliance is grounds for enforcement action; for permit coverage termination or denial of a permit coverage renewal.

The permittee shall comply with effluent standards or prohibitions established under § 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards even if this permit has not yet been modified to incorporate the requirement.

M. Duty to reapply. If the permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the permittee shall submit a new registration statement at least 60 days before the expiration date of the existing permit, unless permission for a later date has been granted by the board department. The board department shall not grant permission for registration statements to be submitted later than the expiration date of the existing permit.

N. Effect of a permit. This permit does not convey neither conveys any property rights in either real or personal property or any exclusive privileges, nor does it authorize authorizes any injury to private property or invasion of personal rights, or any infringement of federal, state, or local law or regulations.

O. State law. Nothing in this permit shall be construed to preclude the institution of any legal action under, or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in permit conditions on "bypassing" ( as described in Part II U), and "upset" ( as described in Part II V), nothing in this permit shall be construed to relieve the permittee from civil and criminal penalties for noncompliance.

P. Oil and hazardous substance liability. Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject under §§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law.

Q. Proper operation and maintenance. The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which that are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems which that are installed by the permittee only when the operation is necessary to achieve compliance with the conditions of this permit.

R. Disposal of solids or sludges. Solids, sludges, or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such the materials from entering state waters.

S. Duty to mitigate. The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment.

T. Need to halt or reduce activity not a defense. It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit.

U. Bypass.

1. "Bypass" means the intentional diversion of waste streams from any portion of a treatment facility. The permittee may allow any bypass to occur which that does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Part II U 2 and 3.

2. Notice.

a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, prior notice shall be submitted, if possible at least 10 days before the date of the bypass.

b. Unanticipated bypass. The permittee shall submit notice of an unanticipated bypass as required in Part II I.

3. Prohibition of bypass.

a. Bypass is prohibited, and the board department may take enforcement action against a permittee for bypass, unless:

(1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage;

(2) There were no feasible alternatives to the bypass, such as (e.g., the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime). This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and

(3) The permittee submitted notices as required under Part II U 2.

b. The board department may approve an anticipated bypass, after considering its adverse effects, if the board department determines that it will meet the three conditions listed above in Part II U 3 a.

V. Upset.

1. An upset constitutes an affirmative defense to an action brought for noncompliance with technology based permit effluent limitations if the requirements of Part II V 2 are met. A determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is not a final administrative action subject to judicial review.

2. A permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that:

a. An upset occurred and that the permittee can identify the causes of the upset;

b. The permitted facility was at the time being properly operated;

c. The permittee submitted notice of the upset as required in Part II I; and

d. The permittee complied with any remedial measures required under Part II S.

3. In any enforcement proceeding the permittee seeking to establish the occurrence of an upset has the burden of proof.

W. Inspection and entry. The permittee shall allow the director, or an authorized representative, including an authorized contractor acting as a representative of the administrator, upon presentation of credentials and other documents as may be required by law, to:

1. Enter upon on the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit;

2. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit;

3. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and

4. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the Clean Water Act and the State Water Control Law, any substances or parameters at any location.

For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein in this general permit shall make an inspection unreasonable during an emergency.

X. Permit actions. Permit coverages may be terminated for cause. The filing of a request by the permittee for a permit termination or a notification of planned changes or anticipated noncompliance does not stay any permit condition.

Y. Transfer of permits.

1. Permits are not transferable to any person except after notice to the department.

2. Coverage under this permit may be automatically transferred to a new permittee if:

a. The current permittee notifies the department within 30 days of the transfer of the title to the facility or property, unless permission for a later date has been granted by the board department;

b. The notice includes a written agreement between the existing and new permittees containing a specific date for transfer of permit responsibility, coverage, and liability between them; and

c. The board department does not notify the existing permittee and the proposed new permittee of its intent to deny the new permittee coverage under the permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part II Y 2 b.

Z. Severability. The provisions of this permit are severable, and if any provision of this permit or the application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby.

9VAC25-151-80. Stormwater pollution prevention plans.

A stormwater pollution prevention plan (SWPPP) shall be developed and implemented for the facility covered by this permit. The SWPPP is intended to document the selection, design, and installation of control measures, including BMPs, to minimize the pollutants in all stormwater discharges from the facility, and to meet applicable effluent limitations and water quality standards.

The SWPPP requirements of this general permit may be fulfilled, in part, by incorporating by reference other plans or documents such as (i.e., a spill prevention control and countermeasure (SPCC) plan developed for the facility under § 311 of the Clean Water Act, or best management practices (BMP) programs otherwise required for the facility, provided that the incorporated plan meets or exceeds the plan requirements of Part III B (Contents of the SWPPP). All plans incorporated by reference into the SWPPP become enforceable under this permit. If a plan incorporated by reference does not contain all of the required elements of the SWPPP of Part III B, the permittee shall develop the missing SWPPP elements and include them in the required plan.

A. Deadlines for SWPPP preparation and compliance.

1. Facilities that were covered under the 2014 2019 Industrial Stormwater General Permit. Owners of facilities that were covered under the 2014 2019 Industrial Stormwater General Permit who are continuing coverage under this general permit shall update and implement any revisions to the SWPPP within 90 days of the board department granting coverage under this permit.

2. New facilities, facilities previously covered by an expiring individual permit, and existing facilities not currently covered by a VPDES permit. Owners of new facilities, facilities previously covered by an expiring individual permit, and existing facilities not currently covered by a VPDES permit who elect to be covered under this general permit shall prepare and implement the SWPPP prior to before submitting the registration statement.

3. New owners of existing facilities. Where the owner of an existing facility that is covered by this permit changes, the new owner of the facility shall update and implement any revisions to the SWPPP within 60 days of the ownership change.

4. Extensions. Upon a showing of good cause, the director may establish a later date in writing for the preparation and compliance with the SWPPP.

B. Contents of the SWPPP. The contents of the SWPPP shall comply with the requirements listed below and those in the appropriate sectors of Part IV (9VAC25-151-90 et seq.). These requirements are cumulative. If a facility has colocated industrial activities that are covered in more than one sector of Part IV, that facility's SWPPP shall comply with the requirements listed in all applicable sectors. The following requirements are applicable to all SWPPPs developed under this general permit. The SWPPP shall include, at a minimum, the following items:

1. Pollution prevention team. The SWPPP shall identify the staff individuals by name or title who comprise the facility's stormwater pollution prevention team. The pollution prevention team is responsible for assisting the facility or plant manager in developing, implementing, maintaining, revising, and ensuring compliance with the facility's SWPPP. Specific responsibilities of each staff individual on the team shall be identified and listed.

2. Site description. The SWPPP shall include the following:

a. A description of the industrial activities at the facility.

b. A site map identifying the following:

(1) The boundaries of the property and the size of the property in acres;

(2) The location and extent of significant structures and impervious surfaces;

(3) Locations of all stormwater conveyances, including ditches, pipes, swales, and inlets, and the directions of stormwater flow using arrows to indicate show which direction stormwater will flow;

(4) Locations of all stormwater control measures, including BMPs;

(5) Locations of all surface water bodies, including wetlands;

(6) Locations of potential pollutant sources identified under Part III B 3;

(7) Locations where significant spills or leaks identified under Part III B 3 c have occurred;

(8) Locations of stormwater outfalls.

(a) An approximate outline of the area draining to each outfall;

(b) The drainage area of each outfall in acres;

(c) The longitude and latitude of each outfall;

(d) The location of any MS4 conveyance receiving discharge from the facility; and

(e) Each outfall shall be identified with a unique numerical identification code. For example: Outfall Number 001, Outfall Number 002, etc.;

(9) Location and description of all nonstormwater discharges;

(10) Location of any storage piles containing salt;

(11) Locations and sources of suspected run-on to the site from an adjacent property if the run-on is suspected of containing significant quantities of pollutants; and

(12) Locations of all stormwater monitoring points.

c. Receiving waters and wetlands. The name of all surface waters receiving discharges from the site, including intermittent streams, dry sloughs, and arroyos. Provide a description of wetland sites that may receive discharges from the facility. If the facility discharges through an MS4, identify the MS4 operator, and the receiving water to which the MS4 discharges.

3. Summary of potential pollutant sources. The SWPPP shall identify each separate area at the facility where industrial materials or activities are exposed to stormwater. Industrial materials or activities include material handling equipment or activities, industrial machinery, raw materials, industrial production and processes, intermediate products, byproducts, final products, and waste products. Material handling activities include the storage, loading and unloading, transportation, disposal, or conveyance of any raw material, intermediate product, final product, or waste product. For each separate area identified, the description shall include:

a. Activities in the area. A list of the industrial activities exposed to stormwater.

b. Pollutants. A list of the pollutants, pollutant constituents, or industrial chemicals associated with each industrial activity that could potentially be exposed to stormwater. The pollutant list shall include all significant materials handled, treated, stored or disposed that have been exposed to stormwater in the three years prior to before the date this SWPPP was prepared or amended. The list shall include any hazardous substances or oil at the facility.

c. Spills and leaks. The SWPPP shall clearly identify areas where potential spills and leaks that can contribute pollutants to stormwater discharges can occur and their corresponding outfalls. The SWPPP shall include a list of significant spills and leaks of toxic or hazardous pollutants that actually occurred at exposed areas, or that drained to a stormwater conveyance during the three-year period prior to before the date this SWPPP was prepared or amended. The list shall be updated within 60 days of the incident if significant spills or leaks occur in exposed areas of the facility during the term of the permit.

d. Sampling data. The SWPPP shall include stormwater discharge sampling data collected during the previous three years.

4. Stormwater controls.

a. Control measures shall be implemented for all the areas identified in Part III B 3 to prevent or control pollutants in stormwater discharges from the facility. Regulated stormwater discharges from the facility include stormwater run-on that commingles with stormwater discharges associated with industrial activity at the facility. The SWPPP shall describe the type, location, and implementation of all control measures for each area where industrial materials or activities are exposed to stormwater.

Selection of control measures shall take into consideration:

(1) That preventing stormwater from coming into contact with polluting materials is generally more effective, and less costly, than trying to remove pollutants from stormwater;

(2) Control measures generally shall be used in combination with each other for most effective water quality protection;

(3) Assessing the type and quantity of pollutants, including their potential to impact receiving water quality, is critical to designing effective control measures;

(4) That minimizing impervious areas at the facility can reduce runoff and improve groundwater recharge and stream base flows in local streams (however, care must be taken to avoid groundwater contamination);

(5) Flow attenuation by use of open vegetated swales and natural depressions can reduce instream impacts of erosive flows;

(6) Conservation or restoration of riparian buffers will help protect streams from stormwater runoff and improve water quality; and

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

b. Nonnumeric technology-based effluent limits. The permittee shall implement the following types of control measures to prevent and control pollutants in the stormwater discharges from the facility, unless it can be demonstrated and documented that such the controls are not relevant to the discharges.

(1) Good housekeeping. The permittee shall keep clean all exposed areas of the facility that are potential sources of pollutants to stormwater discharges. The permittee shall perform the following good housekeeping measures to minimize pollutant discharges:

(a) The SWPPP shall include a schedule for regular pickup and disposal of waste materials, along with routine inspections for leaks and conditions of drums, tanks, and containers;

(b) As feasible, the facility shall sweep or vacuum;

(c) Store materials in containers constructed of appropriate materials;

(d) Manage all waste containers to prevent a discharge of pollutants;

(e) Minimize the potential for waste, garbage, and floatable debris to be discharged by keeping areas exposed to stormwater free of such materials or by intercepting such the materials prior to before the discharge; and

(f) Facilities that handle pre-production plastic or plastic waste shall implement BMPs to eliminate stormwater discharges of plastics.

(2) Eliminating and minimizing exposure. To the extent practicable, manufacturing, processing, and material storage areas (including loading and unloading, storage, disposal, cleaning, maintenance, and fueling operations) shall be located inside, or protected by a storm-resistant covering to prevent exposure to rain, snow, snowmelt, and runoff. Eliminating exposure at all industrial areas may make the facility eligible for the "Conditional Exclusion for No Exposure" provision of 9VAC25-31-120 E, thereby eliminating the need to have a permit. Unless infeasible, facilities shall implement the following:

(a) Use grading, berming, or curbing to prevent runoff of contaminated flows and divert run-on away from potential sources of pollutants;

(b) Locate materials, equipment, and activities so that potential leaks and spills are contained, or able to be contained, or diverted before discharge;

(c) Clean up spills and leaks immediately, upon on discovery of the spills or leaks, using dry methods (e.g., absorbents) to prevent the discharge of pollutants;

(d) Store leaking vehicles and equipment indoors or, if stored outdoors, use drip pans and adsorbents;

(e) Utilize appropriate spill or overflow protections equipment;

(f) Perform all vehicle maintenance or equipment cleaning operations indoors, under cover, or in bermed areas that prevent runoff and run-on and also capture any overspray; and

(g) Drain fluids from equipment and vehicles that will be decommissioned, and for any equipment and vehicles that remain unused for extended periods of time, inspect at least monthly for leaks.

(3) Preventive maintenance. The permittee shall have a preventive maintenance program that includes regular inspection, testing, maintenance, and repairing of all industrial equipment and systems to avoid situations that could result in leaks, spills, and other releases of pollutants in stormwater discharged from the facility. This program is in addition to the specific control measure maintenance required under Part III C (Maintenance).

(4) Spill prevention and response procedures. The SWPPP shall describe the procedures that will be followed for preventing and responding to spills and leaks, including:

(a) Preventive measures, such as (e.g., barriers between material storage and traffic areas, secondary containment provisions, and procedures for material storage and handling);

(b) Response procedures, including notification of appropriate facility personnel staff, emergency agencies, and regulatory agencies, and procedures for stopping, containing, and cleaning up spills. Measures for cleaning up hazardous material spills or leaks shall be consistent with applicable Resource Conservation and Recovery Act regulations at 40 CFR Part 264 and 40 CFR Part 265. Employees who may cause, detect, or respond to a spill or leak shall be trained in these procedures and have necessary spill response equipment available. If possible, one of these individuals shall be a member of the Pollution Prevention Team;

(c) Procedures for plainly labeling containers (e.g., "used oil," "spent solvents," "fertilizers and pesticides," etc.) that could be susceptible to spillage or leakage to encourage proper handling and facilitate rapid response if spills or leaks occur; and

(d) Contact information for individuals and agencies that must be notified in the event of a spill shall be included in the SWPPP, and in other locations where it will be readily available.

(5) Salt storage piles or piles containing salt. Storage piles of salt or piles containing salt used for deicing or other commercial or industrial purposes shall be enclosed or covered to prevent exposure to precipitation. The permittee shall implement appropriate measures (e.g., good housekeeping, diversions, containment) to minimize exposure resulting from adding to or removing materials from the pile. All salt storage piles shall be located on an impervious surface. All runoff from the pile, and runoff that comes in contact with salt, including under drain systems, shall be collected and contained within a bermed basin lined with concrete or other impermeable materials, or within an underground storage tank or tanks, or within an above ground aboveground storage tank or tanks, or disposed of through a sanitary sewer (with the permission of the owner of the treatment facility). A combination of any or all of these methods may be used. In no case shall salt contaminated stormwater be allowed to discharge directly to the ground or to surface waters.

(6) Employee training. The permittee shall implement a stormwater employee training program for the facility. The SWPPP shall include a schedule for all types of necessary training, and shall document all training sessions and the employees who received the training. Training shall be provided at least annually for all employees who work in areas where industrial materials or activities are exposed to stormwater, and for employees who are responsible for implementing activities identified in the SWPPP (e.g., inspectors, maintenance personnel staff, etc.). The training shall cover the components and goals of the SWPPP, and include such topics as spill response, good housekeeping, material management practices, control measure operation and maintenance, etc. The SWPPP shall include a summary of any training performed.

(7) Sediment and erosion control. The SWPPP shall identify areas at the facility that, due to topography, land disturbance (e.g., construction, landscaping, site grading), or other factors, have a potential for soil erosion. The permittee shall identify and implement structural, vegetative, and stabilization control measures to prevent or control on-site and off-site erosion and sedimentation. Flow velocity dissipation devices shall be placed at discharge locations and along the length of any outfall channel if the flows would otherwise create erosive conditions.

(8) Management of runoff. The SWPPP shall describe the stormwater runoff management practices (i.e., permanent structural control measures) for the facility. These types of control measures shall be used to divert, infiltrate, reuse, or otherwise reduce pollutants in stormwater discharges from the site.

Structural control measures may require a separate permit under § 404 of the Clean Water Act and the Virginia Water Protection Permit Program Regulation (9VAC25-210) before installation begins.

(9) Dust suppression and vehicle tracking of industrial materials. The permittee shall implement control measures to minimize the generation of dust and off-site tracking of raw, final, or waste materials. Stormwater collected on-site may be used for the purposes of dust suppression or for spraying stockpiles. Potable water, well water, and uncontaminated reuse water may also be used for this purpose. There shall be no direct discharge to surface waters from dust suppression activities or as a result of spraying stockpiles.

(10) Airport deicing operations. The permittee shall minimize, and where practicable eliminate, the use of deicing or anti-icing chemicals in order to reduce the aggregate amount of deicing or anti-icing chemicals used and lessen the environmental impact. The permittee shall minimize contamination of stormwater runoff from aircraft deicing and anti-icing operations and runway deicing operations, if applicable. Where deicing and anti-icing operations occur, the SWPPP shall describe procedures and control measures to manage contaminated stormwater runoff or snow melt (from areas used to dispose contaminated snow) to minimize the amount of pollutants discharged from the site. The following control measure options or their equivalents shall be considered: covering storm sewer inlets, using booms, installing absorptive interceptors in the drain, establishing a dedicated deicing facility with a runoff collection and recovery system; using vacuum or collection trucks; storing contaminated stormwater or deicing fluids in tanks and releasing controlled amounts to a publicly owned treatment works (with permission of the treatment works); collecting contaminated runoff in a wet pond for biochemical decomposition; and directing runoff into vegetative swales or other infiltration measures. Procedures and selected control measures should at all times be consistent with considerations of flight safety.

5. Routine facility inspections. Personnel Staff who possess the knowledge and skills to assess conditions and activities that could impact stormwater quality at the facility and who can also evaluate the effectiveness of control measures shall regularly inspect all areas of the facility where industrial materials or activities are exposed to stormwater, areas where spills or leaks have occurred in the past three years, discharge points, and control measures. At least one member of the pollution prevention team shall participate in the routine facility inspections.
The inspection frequency shall be specified in the SWPPP based upon on a consideration of the level of industrial activity at the facility, but shall be at a minimum of once per calendar quarter unless more frequent intervals are specified elsewhere in the permit or written approval is received from the department for less frequent intervals. Inspections shall be performed during operating hours. At least once each calendar year, the routine facility inspection shall be conducted during a period when a stormwater discharge is occurring.
The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status. Certain sectors in Part IV have additional inspection requirements. If the VEEP E3/E4 waiver language is not included for the sector specific inspections, these additional inspection requirements may not be waived.
Any deficiencies in the implementation of the SWPPP that are found shall be corrected as soon as practicable, but not later than within 60 days of the inspection, unless permission for a later date is granted in writing by the director. The results of the inspections shall be documented in the SWPPP and shall include at a minimum:

a. The inspection date;

b. The names of the inspectors;

c. Weather information and a description of any discharges occurring at the time of the inspection;

d. Any previously unidentified discharges of pollutants from the site;

e. Any control measures needing maintenance or repairs;

f. Any failed control measures that need replacement;

g. Any incidents of noncompliance observed; and

h. Any additional control measures needed to comply with the permit requirements.

C. Maintenance. The SWPPP shall include a description of procedures and a regular schedule for preventive maintenance of all control measures, and shall include a description of the back-up practices that are in place should a runoff event occur while a control measure is off-line. The effectiveness of nonstructural control measures shall also be maintained by appropriate means (e.g., spill response supplies available and personnel staff trained, etc.).

All control measures identified in the SWPPP shall be maintained in effective operating condition and shall be observed at least annually when a stormwater discharge is occurring to ensure that they are functioning correctly. Where discharge locations are inaccessible, nearby downstream locations shall be observed. The observations shall be documented in the SWPPP.

If routine facility inspections required by Part III B 5 identify control measures that are not operating effectively, repairs or maintenance shall be performed before the next anticipated storm event. If maintenance prior to before the next anticipated storm event is not possible, maintenance shall be scheduled and accomplished as soon as practicable. In the interim, back-up measures shall be employed and documented in the SWPPP until repairs or maintenance is complete. Documentation shall be kept with the SWPPP of maintenance and repairs of control measures, including the dates of regular maintenance, dates of discovery of areas in need of repair or replacement, dates for repairs, dates that the control measures returned to full function, and the justification for any extended maintenance or repair schedules.

D. Nonstormwater discharges.

1. Discharges of certain sources of nonstormwater listed in Part I B 1 are allowable discharges under this permit. All other nonstormwater discharges are not authorized and shall be either eliminated or covered under a separate VPDES permit.

2. Annual outfall evaluation for unauthorized discharges.

a. The SWPPP shall include documentation that all stormwater outfalls associated with industrial activity have been evaluated annually for the presence of unauthorized discharges. The documentation shall include:

(1) The date of the evaluation;

(2) A description of the evaluation criteria used;

(3) A list of the outfalls or on-site drainage points that were directly observed during the evaluation;

(4) A description of the results of the evaluation for the presence of unauthorized discharges; and

(5) The actions taken to eliminate unauthorized discharges if any were identified.

b. The permittee may request in writing to the department that the facility be allowed to conduct annual outfall evaluations at 20% of the outfalls. If approved, the permittee shall evaluate at least 20% of the facility outfalls each year on a rotating basis such so that all facility outfalls will be evaluated during the period of coverage under this permit.

E. Signature and SWPPP review.

1. Signature and location. The SWPPP, including revisions to the SWPPP to document any corrective actions taken as required by Part I A 6, shall be signed in accordance with Part II K, dated, and retained on-site at the facility covered by this permit in accordance with Part II B 2. All other changes to the SWPPP, and other permit compliance documentation, shall be signed and dated by the person preparing the change or documentation. For inactive and unstaffed facilities, the plan may be kept at the nearest office of the permittee.

2. Availability. The permittee shall retain a copy of the current SWPPP (hard copy or electronic) required by this permit at the facility, and it shall be immediately available to the department, EPA, or the operator of an MS4 receiving discharges from the site at the time of an on-site inspection or upon request.

3. Required modifications. The permittee shall modify the SWPPP whenever necessary to address all corrective actions required by Part I A 6 a (Data exceeding benchmark concentration values) or Part I A 6 b (Corrective actions). Changes to the SWPPP shall be made in accordance with the corrective action deadlines in Part I A 6 a and Part I A 6 b, and shall be signed and dated in accordance with Part III E 1.

The director may notify the permittee at any time that the SWPPP, control measures, or other components of the facility's stormwater program do not meet one or more of the requirements of this permit. The notification shall identify specific provisions of the permit that are not being met, and may include required modifications to the stormwater program, additional monitoring requirements, and special reporting requirements. The permittee shall make any required changes to the SWPPP within 60 days of receipt of such the notification, unless permission for a later date is granted in writing by the director, and shall submit a written certification to the director that the requested changes have been made.

F. Maintaining an updated SWPPP.

1. The permittee shall review and amend the SWPPP as appropriate whenever:

a. There is construction or a change in design, operation, or maintenance at the facility that has a significant effect on the discharge, or the potential for the discharge, of pollutants from the facility;

b. Routine inspections or compliance evaluations determine that there are deficiencies in the control measures, including BMPs;

c. Inspections by local, state, or federal officials determine that modifications to the SWPPP are necessary;

d. There is a significant spill, leak, or other release at the facility;

e. There is an unauthorized discharge from the facility; or

f. The department notifies the permittee that a TMDL has been developed and applies to the permitted facility, consistent with Part I B.

2. SWPPP modifications shall be made within 60 calendar days after discovery, observation or event requiring a an SWPPP modification. Implementation of new or modified control measures (distinct from regular preventive maintenance of existing control measures described in Part III C) shall be initiated before the next storm event if possible, but no later than 60 days after discovery, or as otherwise provided or approved by the director. The amount of time taken to modify a control measure or implement additional control measures shall be documented in the SWPPP.

3. If the SWPPP modification is based on a significant spill, leak, release, or unauthorized discharge, include a description and date of the incident, the circumstances leading to the incident, actions taken in response to the incident, and measures to prevent the recurrence of such releases. Unauthorized discharges are subject to the reporting requirements of Part II G of this permit.

Part IV

Sector Specific Permit Requirements

9VAC25-151-85. Sector specific permit requirements.

The permittee must only comply with the additional requirements of Part IV of this permit that apply to the sectors of industrial activity located at the facility. These sector specific requirements are in addition to the requirements specified in Parts I, II, and III of this permit. All numeric effluent limitations and benchmark monitoring concentration values reflect two significant digits, unless otherwise noted.

9VAC25-151-90. Sector A - Timber products facilities (including mulch, wood, and bark facilities and mulch dyeing facilities).

The permittee must only comply with the additional requirements of Part IV (9VAC25-151-90 et seq.) that apply to the sectors of industrial activity located at the facility. These sector specific requirements are in addition to the requirements specified in Parts I, II and III of this permit. All numeric effluent limitations and benchmark monitoring concentration values reflect two significant digits, unless otherwise noted.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities generally classified under Standard Industrial Classification (SIC) Codes 2491 and 2499 that are engaged in the following activities: cutting timber and pulpwood (those that have log storage or handling areas), mills, including merchant, lath, shingle, cooperage stock, planing, plywood and veneer, and producing lumber and wood materials; wood preserving, manufacturing wood buildings or mobile homes; and manufacturing finished articles made entirely of wood or related materials, except for wood kitchen cabinet manufacturers (SIC Code 2434), and mulch, wood, and bark facilities, including mulch dyeing operations (SIC Code 24991303).

B. Special conditions.

1. Prohibition of nonstormwater discharges. Discharges of stormwater from areas where there may be contact with chemical formulations applied to provide surface protection are not authorized by this permit. Surface protection includes chemical application to control sap stain, mold, mildew, and insects. These discharges must be covered under a separate VPDES permit. Discharge of wet dye drippings from mulch dyeing operations are also prohibited.

2. Authorized nonstormwater discharges. In addition to the discharges described in Part I B 1, the following nonstormwater discharges may be authorized by this permit provided the nonstormwater component of the discharge is in compliance with 9VAC25-151-90 subsection C of this section and the effluent limitations described in 9VAC25-151-90 subsection D of this section: 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.

C. Stormwater controls. The description of stormwater management controls shall address the following areas of the site: log, lumber, and wood product storage areas; residue storage areas; loading and unloading areas; material handling areas; chemical storage areas; and equipment and vehicle maintenance, storage, and repair areas. Facilities that surface protect or preserve wood products shall address specific control measures, including any BMPs, for wood surface protection and preserving activities. Facilities that dye mulch shall address specific control measures to prevent the discharge of wet dye drippings and to prevent seepage of pollutants to groundwater.

The SWPPP shall address the following minimum components:

1. Good housekeeping. Good housekeeping measures in storage areas, loading and unloading areas, and material handling areas shall be designed to:

a. Limit the discharge of wood debris;

b. Minimize the leachate generated from decaying wood materials; and

c. Minimize the generation of dust.

2. Routine facility inspections. Inspections at processing areas, transport areas, and treated wood storage areas of facilities performing wood surface protection and preservation activities shall be performed monthly to assess the usefulness of practices in minimizing the deposit of treatment chemicals on unprotected soils and in areas that will come in contact with stormwater discharges. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

D. Numeric effluent limitations.

The following numeric effluent limitations shall be met by existing and new facilities. Wet deck storage area runoff. Nonstormwater discharges from areas used for the storage of logs where water, without chemical additives, is intentionally sprayed or deposited on logs to deter decay or infestation by insects are required to meet the following effluent limitations: pH shall be within the range of 6.0-9.0, and there will be no discharge of debris. Chemicals are not allowed to be applied to the stored logs. The term "debris" is defined as woody material such as, for example, bark, twigs, branches, heartwood, or sapwood that will not pass through a 2.54 cm (1 in.) diameter round opening and is present in the discharge from a wet deck storage area. Permittees subject to these numeric limitations shall be in compliance with these limitations through the duration of permit coverage.

Table 90-1 Sector A - Numeric Effluent Limitations
Parameter	Effluent Limitations
Wet Decking Discharges at Log Storage and Handling Areas (SIC Code 2411)
pH	6.0 - 9.0 s.u.
Debris, (woody material such as (e.g., bark, twigs, branches, heartwood, or sapwood)	No discharge of debris that will not pass through a 2.54 cm (1") diameter round opening.

E. Benchmark monitoring and reporting requirements. Wood preserving facilities; mulch, wood, and bark facilities; and mulch dyeing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in the appropriate section of Table 90-2.

Table 90-2 Sector A - Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
General Sawmills and Planing Mills (SIC Code 2421)
Total Suspended Solids (TSS)	100 mg/L
Wood Preserving Facilities (SIC Code 2491)
Total Recoverable Arsenic1	50 150 μg/L
Total Recoverable Chromium1	16 μg/L
Total Recoverable Copper1	18 13 μg/L
Log Storage and Handling Facilities (SIC Code 2411)
Total Suspended Solids (TSS)	100 mg/L
Hardwood Dimension and Flooring Mills; Special Products Sawmills, not elsewhere classified; Millwork, Veneer, Plywood and Structural Wood; Wood Containers; Wood Buildings and Mobile Homes; Reconstituted Wood Products; and Wood Products Facilities not elsewhere classified (SIC Codes 2426, 2429, 2431-2439 (except 2434), 2441, 2448, 2449, 2451, 2452, 2493, and 2499).
Total Suspended Solids (TSS)	100 mg/L
Mulch, Wood, and Bark Facilities (SIC Code 24991303)
Total Suspended Solids (TSS)	100 mg/L
Chemical Oxygen Demand (COD)	120 mg/L
Facilities with Mulch Dyeing/Coloring Operations (SIC Code 24991303): Monitor ONLY those outfalls from the facility that collect runoff from areas where mulch dyeing/coloring activities occur, including but not limited to areas where loading, transporting, and storage of dyed/colored mulch occurs.2
Total Suspended Solids (TSS)	100 mg/L
Biochemical Oxygen Demand (BOD5)	30 mg/L
Chemical Oxygen Demand (COD)	120 mg/L
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Arsenic	50 150 μg/L
Total Recoverable Cadmium	2.1 1.8 μg/L
Total Recoverable Chromium	16 μg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Selenium	5.0 μg/L
Total Recoverable Silver	3.8 3.2 μg/L
Total Recoverable Zinc	120 μg/L
Total Nitrogen	2.2 mg/L
Total Phosphorus	2.0 mg/L
1Monitoring for metals (arsenic, chromium and copper) is not required for wood preserving facilities using only oil-based preservatives.
2Benchmark monitoring waivers are available to facilities utilizing mulch dye or colorant products that do not contain the specified parameters provided that: (i) monitoring from samples collected during one monitoring period demonstrates that the specific parameter in question is below the quantitation level; (ii) a waiver request with attached laboratory certificate of analysis is submitted to and approved by the board department; and (iii) a certification statement is submitted to the department annually that the facility does not use mulch dyeing products that contain any of the specifically waived parameters. Approved benchmark monitoring waivers shall be kept with the SWPPP.

9VAC25-151-110. Sector C - Chemical and allied products manufacturing.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities engaged in manufacturing the following products and generally described by the SIC code shown:

1. Industrial inorganic chemicals (including SIC Codes 2812-2819);

2. Plastic materials and synthetic resins, synthetic rubbers, and cellulosic and other synthetic fibers, except glass (including SIC Codes 2821-2824);

3. Soap and other detergents, including facilities producing glycerin from vegetable and animal fats and oils; specialty cleaning, polishing, and sanitation preparations; surface active preparations used as emulsifiers, wetting agents, and finishing agents, including sulfonated oils; and perfumes, cosmetics, and other toilet preparations (including SIC Codes 2841-2844); and

4. Nitrogenous and phosphatic basic fertilizers, mixed fertilizer, pesticides, and other agricultural chemicals (SIC Codes 2873-2879). Composting Facilities (SIC Code 2875) are included.

B. Numeric effluent limitations. The following numeric effluent limitations shall be met by existing and new discharges with phosphate fertilizer manufacturing runoff. The provisions of this paragraph subsection are applicable to stormwater discharges from the phosphate subcategory of the fertilizer manufacturing point source category (40 CFR 418.10). The term contaminated stormwater runoff shall mean precipitation runoff, that during manufacturing or processing, comes into contact with any raw materials, intermediate product, finished product, by-products byproducts, or waste product. The concentration of pollutants in stormwater discharges shall not exceed the effluent limitations in Table 110-1.

Table 110-1 Sector C – Numeric Effluent Limitations
Parameter	Effluent Limitations
	Daily Maximum	30-day Average
Phosphate Subcategory of the Fertilizer Manufacturing Point Source Category (40 CFR 418.10) - applies to precipitation runoff that, during manufacturing or processing, comes into contact with any raw materials, intermediate product, finished product, by-products byproducts, or waste product (SIC Code 2874)
Total Phosphorus (as P)	105 mg/L	35 mg/L
Fluoride	75 mg/L	25 mg/L

C. Benchmark monitoring and reporting requirements. Agricultural chemical manufacturing facilities; industrial inorganic chemical facilities; soaps, detergents, cosmetics, and perfume manufacturing facilities; and plastics, synthetics, and resin manufacturing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 110-2.

Table 110-2 Sector C – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Agricultural Chemicals (SIC Codes 2873-2879)
Total Nitrogen	2.2 mg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Zinc	120 μg/L
Total Phosphorus	2.0 mg/L
Industrial Inorganic Chemicals (SIC Codes 2812-2819)
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Iron	1.0 mg/L
Total Nitrogen	2.2 mg/L
Soaps, Detergents, Cosmetics, and Perfumes (SIC Codes 2841-2844)
Total Nitrogen	2.2 mg/L
Total Recoverable Zinc	120 μg/L
Plastics, Synthetics, and Resins (SIC Codes 2821-2824)
Total Recoverable Zinc	120 μg/L
Composting Facilities (SIC Code 2875)
Total Suspended Solids (TSS)	100 mg/L
Biochemical Oxygen Demand (BOD5)	30 mg/L
Chemical Oxygen Demand (COD)	120 mg/L
Ammonia	2.14 mg/L
Total Nitrogen	2.2 mg/L
Total Phosphorus	2.0 mg/L

9VAC25-151-130. Sector E - Clay, cement, concrete, and gypsum products.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities generally classified under SIC Codes 3251-3259, 3261-3269, 3274, and 3275 that are engaged in either manufacturing the following products or performing the following activities: structural clay products including tile and brick; pottery and porcelain electrical supplies; and concrete, plaster, and gypsum products.

Concrete block and brick facilities (SIC Code 3271), concrete products facilities, except block and brick (SIC Code 3272), and ready-mixed concrete facilities (SIC Code 3273) are not covered by this permit.

B. Stormwater controls. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following items:

1. Facilities shall prevent or minimize the discharge of: spilled cement; aggregate (including sand or gravel); kiln dust; fly ash; settled dust; and other significant materials in stormwater from paved portions of the site that are exposed to stormwater. Measures used to minimize the presence of these materials may include regular sweeping, or other equivalent measures. The SWPPP shall indicate the frequency of sweeping or equivalent measures. The frequency shall be determined based upon on consideration of the amount of industrial activity occurring in the area and frequency of precipitation, but shall not be less than once per week if cement, aggregate, kiln dust, fly ash, or settled dust are being handled or processed.

2. Facilities shall prevent the exposure of fine granular solids (such as e.g., cement, fly ash, and kiln dust, etc.) to stormwater. Where practicable, these materials shall be stored in enclosed silos or hoppers, buildings, or under other covering.

C. Numeric effluent limitations. The following numeric effluent limitations shall be met by facilities with cement manufacturing and material storage runoff. Any discharge composed of runoff from the storage of materials, including raw materials, intermediate products, finished products, and waste materials from the manufacture of cement, shall not exceed the limitations in Table 130-1. Runoff from the storage piles shall not be diluted with other stormwater runoff or flows to meet these limitations. Any untreated overflow from facilities designed, constructed, and operated to treat the volume of material storage pile runoff that is associated with a 10-year, 24-hour rainfall event shall not be subject to the TSS or pH limitations.

Table 130-1 Sector E – Numeric Effluent Limitations
Parameter	Effluent Limitations
	Daily Maximum	30-day Average
Cement Manufacturing Facility, Material Storage Runoff: Any discharge composed of runoff that derives from the storage of materials including raw materials, intermediate products, finished products, and waste materials that are used in or derived from the manufacture of cement.
Total Suspended Solids (TSS)	50 mg/L
pH	6.0 - 9.0 s.u.

D. Benchmark monitoring and reporting requirements. Clay product manufacturers (SIC Codes 3251-3259, SIC Codes 3261-3269) and lime and gypsum product manufacturers (SIC Codes 3274, 3275) are required to monitor their stormwater discharges for the pollutants of concern listed in Table 130-2.

Table 130-2 Sector E – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Clay Product Manufacturers (SIC Codes 3251-3259, 3261-3269)
Total Recoverable Aluminum	750 1,100 ug/L
Lime and Gypsum Product Manufacturers (SIC Codes 3274, 3275)
Total Suspended Solids (TSS)	100 mg/L
pH	6.0 - 9.0 s.u.
Total Recoverable Iron	1.0 mg/L

9VAC25-151-140. Sector F - Primary metals.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from the following types of facilities in the primary metal industry, and generally described by the SIC codes shown:

1. Steel works, blast furnaces, and rolling and finishing mills, including: steel wire drawing and steel nails and spikes; cold-rolled steel sheet, strip, and bars; and steel pipes and tubes (SIC Codes 3312-3317).

2. Iron and steel foundries, including: gray and ductile iron, malleable iron, steel investment, and steel foundries not elsewhere classified (SIC Codes 3321-3325).

3. Rolling, drawing, and extruding of nonferrous metals, including: rolling, drawing, and extruding of copper; rolling, drawing, and extruding of nonferrous metals except copper and aluminum; and drawing and insulating of nonferrous wire (SIC Codes 3351-3357).

4. Nonferrous foundries (castings), including aluminum die-castings, nonferrous die-castings, except aluminum, aluminum foundries, copper foundries, and nonferrous foundries, except copper and aluminum (SIC Codes 3363-3369).

B. Benchmark monitoring and reporting requirements. Primary metals facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 140.

Table 140 Sector F – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Steel Works, Blast Furnaces, and Rolling and Finishing Mills (SIC Codes 3312-3317)
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Zinc	120 μg/L
Iron and Steel Foundries (SIC Codes 3321-3325)
Total Recoverable Aluminum	750 1,100 μg/L
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Zinc	120 μg/L
Rolling, Drawing, and Extruding of Nonferrous Metals (SIC Codes 3351-3357)
Total Recoverable Copper	18 13 μg/L
Total Recoverable Zinc	120 μg/L
Nonferrous Foundries (SIC Codes 3363-3369)
Total Recoverable Copper	18 13 μg/L
Total Recoverable Zinc	120 μg/L

9VAC25-151-150. Sector G - Metal mining (ore mining and dressing).

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from active, temporarily inactive, and inactive metal mining and ore dressing facilities including mines abandoned on federal lands, as classified under SIC Major Group 10. Coverage is required for facilities that discharge stormwater that has come into contact with, or is contaminated by, any overburden, raw material, intermediate product, finished product, byproduct, or waste product located on the site of the operation. SIC Major Group 10 includes establishments primarily engaged in mining of ores, developing mines, or exploring for metallic minerals (ores) and also includes ore dressing and beneficiating operations, whether performed at colocated, dedicated mills or at separate mills, such as (e.g., custom mills). For the purposes of this section, the term "metal mining" includes any of the separate activities listed in this subsection. Covered discharges include:

1. All stormwater discharges from inactive facilities;

2. Stormwater discharges from the following areas of active and temporarily inactive metal mining facilities: waste rock and overburden piles if composed entirely of stormwater and not combining with mine drainage; topsoil piles; off-site haul and access roads; on-site haul and access roads constructed of waste rock and overburden if composed entirely of stormwater and not combining with mine drainage; on-site haul and access roads not constructed of waste rock, overburden, or spent ore except if mine drainage is used for dust control; runoff from tailings dams and dikes when not constructed of waste rock or tailings and no process fluids are present; runoff from tailings dams or dikes when constructed of waste rock or tailings and no process fluids are present if composed entirely of stormwater and not combining with mine drainage; concentration building if no contact with material piles; mill site if no contact with material piles; office or administrative building and housing if mixed with stormwater from industrial area; chemical storage area; docking facility if no excessive contact with waste product that would otherwise constitute mine drainage; explosive storage; fuel storage; vehicle and equipment maintenance area and building; parking areas (if necessary); power plant; truck wash areas if no excessive contact with waste product that would otherwise constitute mine drainage; unreclaimed, disturbed areas outside of active mining area; reclaimed areas released from reclamation bonds prior to before December 17, 1990; and partially or inadequately reclaimed areas or areas not released from reclamation bonds;

3. Stormwater discharges from exploration and development of metal mining and ore dressing facilities; and

4. Stormwater discharges from facilities at mining sites undergoing reclamation.

B. Limitations on coverage. Stormwater discharges from active metal mining facilities that are subject to the effluent limitation guidelines for the Ore Mining and Dressing Point Source Category (40 CFR Part 440) are not authorized by this permit.

Discharges that come in contact with overburden and waste rock are subject to 40 CFR Part 440, providing: the discharges drain to a point source (either naturally or as a result of intentional diversion), and they combine with mine drainage that is otherwise regulated under 40 CFR Part 440. Discharges from overburden and waste rock can be covered under this permit if they are composed entirely of stormwater and do not combine with sources of mine drainage that are subject to 40 CFR Part 440.

C. Special Conditions. Prohibition of nonstormwater discharges. In addition to the general prohibition of nonstormwater discharges in Part I B 1, the following discharge is not covered by this permit: adit drainage. Contaminated seeps and springs discharging from waste rock dumps that do not directly result from precipitation events are also not authorized by this permit.

D. Special 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), and are only for this section of the general permit:

"Active metal mining facility" means a place where work or other related activity 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.

"Active phase" means activities including the extraction, removal, or recovery of metal ore. For surface mines, this definition does not include any land where grading has returned the earth to a desired contour and reclamation has begun.

"Construction phase" means 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."

"Exploration phase" means exploration and land disturbance activities to determine the financial viability of a site. The exploration phase is not considered part of "mining operations."

"Final stabilization" means a site or portion of a site where all applicable federal and state reclamation requirements have been implemented.

"Inactive metal mining facility" means a site or portion of a site where metal mining or milling occurred in the past but is not an active facility as defined in this permit, and where the inactive portion is not covered by an active mining permit issued by the applicable federal or state agency. An inactive metal mining facility has an identifiable owner or operator. Sites where mining claims are being maintained prior to before 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 a VPDES industrial stormwater permit.

"Mining operation" means the active and temporarily inactive phases and the reclamation phase, but excludes the exploration and construction phases.

"Reclamation phase" means activities undertaken, in compliance 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 in order to meet applicable federal and state reclamation requirements. The reclamation phase is considered part of "mining operations."

"Temporarily inactive metal mining facility" means a site or portion of a site where metal mining 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 federal or state agency.

E. 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.

1. Management practices for clearing, grading, and excavation activities.

a. Selecting and installing control measures. A combination of erosion and sedimentation control measures are required to achieve maximum pollutant prevention and removal. All control measures shall be properly selected, installed, and maintained in accordance with any relevant manufacturer specifications and good engineering practices.

b. Good housekeeping. Litter, debris, and chemicals shall be prevented from becoming a pollutant source in stormwater discharges.

c. Retention and detention of stormwater runoff. For drainage locations serving more than one acre, sediment basins or temporary sediment traps should be used. At a minimum, silt fences, vegetative buffer strips, or equivalent sediment controls are required for all down slope boundaries (and for those side slope boundaries deemed appropriate as dictated by individual site conditions) of the development area unless a sediment basin providing storage for a calculated volume of runoff from a two-year, 24-hour storm or 3,600 cubic feet of storage per acre drained is provided. Sediment shall be removed from sediment traps or sedimentation ponds when the design capacity has been reduced by 50%.

d. Temporary stabilization of disturbed areas. Stabilization measures shall be initiated immediately in portions of the site where development activities have temporarily ceased, but in no case more than 14 days after the clearing, grading, and excavation activities in that portion of the site have temporarily ceased. In arid, semi-arid, and drought-stricken areas, or in areas subject to snow or freezing conditions, where initiating perennial vegetative stabilization measures is not possible within 14 days after mining, exploration, or construction activity has temporarily ceased, final temporary vegetative stabilization measures shall be initiated as soon as practicable. Until temporary vegetative stabilization is achieved, interim measures such as (i.e., erosion control blankets with an appropriate seed base and tackifiers) shall be employed used. In areas of the site where exploration or construction has permanently ceased prior to before active mining, temporary stabilization measures shall be implemented to minimize mobilization of sediment or other pollutants until such time as the active mining phase commences begins.

2. Requirements for inspection of clearing, grading, and excavation activities.

a. Inspection frequency. Inspections shall be conducted at least once every seven calendar days or at least once every 14 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater. Inspection frequency may be reduced to at least once every month if the entire site is temporarily stabilized, if runoff is unlikely due to winter (e.g., site is covered with snow or ice) or frozen conditions, or construction is occurring during seasonal dry periods in arid areas and semi-arid areas.

b. Location of inspections. Inspections shall include all areas of the site disturbed by clearing, grading, and excavation activities and areas used for storage of materials that are exposed to precipitation. Sedimentation and erosion control measures identified in the SWPPP shall be observed to ensure proper operation. Discharge locations shall be inspected to ascertain determine whether erosion control measures are effective in preventing significant impacts to surface waters, where accessible. Where discharge locations are inaccessible, nearby downstream locations shall be inspected to the extent that such inspections are practicable. Locations where vehicles enter or exit the site shall be inspected for evidence of off-site sediment tracking.

c. Inspection reports. For each inspection required in this subsection, an inspection report shall be completed. At a minimum, the inspection report shall include:

(1) The inspection date;

(2) Names, titles, and qualifications of personnel staff making the inspection;

(3) Weather information for the period since the last inspection (or note if it is the first inspection) including a best estimate of the beginning of each storm event, duration of each storm event, approximate amount of rainfall for each storm event (in inches), and whether any discharges occurred;

(4) Weather information and a description of any discharges occurring at the time of the inspection;

(5) Locations of discharges of sediment or other pollutants from the site;

(6) Locations of control measures that need to be maintained;

(7) Locations of control measures that failed to operate as designed or proved inadequate for a particular location;

(8) Locations where additional control measures are needed that did not exist at the time of inspection; and

(9) Corrective actions required, including any changes to the SWPPP necessary and implementation dates.

A record of each inspection and of any actions taken in accordance with this section shall be retained as part of the SWPPP for at least three years from the date that permit coverage expires or is terminated. The inspection reports shall identify any incidents of noncompliance with the permit conditions. Where a report does not identify any incidents of noncompliance, the report shall contain a certification that the clearing, grading, and excavation activities are in compliance with the SWPPP and this permit.

3. Requirements for cessation of clearing, grading, and excavation activities.

a. Inspections and maintenance. Inspections and maintenance of control measures, including BMPs, associated with clearing, grading, and excavation activities being conducted as part of the exploration and construction phase of a mining operation shall continue until final stabilization has been achieved on all portions of the disturbed area, or until the commencement of the active mining phase for those areas that have been temporarily stabilized as a precursor to mining.

b. Final stabilization. Stabilization measures shall be initiated immediately in portions of the site where exploration or construction activities have permanently ceased, but in no case more than 14 days after the exploration or construction activity in that portion of the site has permanently ceased. In arid, semi-arid, and drought-stricken areas, or in areas subject to snow or freezing conditions, where initiating perennial vegetative stabilization measures is not possible within 14 days after exploration or construction activity has permanently ceased, final vegetative stabilization measures shall be initiated as soon as possible. Until final stabilization is achieved temporary stabilization measures, such as (e.g., erosion control blankets with an appropriate seed base and tackifiers,) shall be used.

F. SWPPP requirements for active, inactive, and temporarily inactive metal mining facilities and sites undergoing reclamation. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following items.

1. Site description.

a. Activities at the facility. A description of the mining and associated activities taking place at the site that can potentially affect stormwater discharges covered by this permit. The description shall include a general description of the location of the site relative to major transportation routes and communities.

b. Site map. The site map shall identify the locations of the following, as appropriate: mining and milling site boundaries; access and haul roads; an outline of the drainage areas of each stormwater outfall within the facility, and an indication of the types of discharges from the drainage areas; locations of all permitted discharges covered under an individual VPDES permit; outdoor equipment storage, fueling, and maintenance areas; materials handling areas; outdoor manufacturing, storage or material disposal areas; outdoor storage areas for chemicals and explosives; areas used for storage of overburden, materials, soils, or wastes; location of mine drainage (where water leaves mine) or any other process water; tailings piles and ponds, both proposed and existing; heap leach pads; points of discharge from the property for mine drainage and process water; surface waters; boundary of tributary areas that are subject to effluent limitations guidelines; and locations of reclaimed areas.

2. Summary of potential pollutant sources. For each area of the mine or mill site where stormwater discharges associated with industrial activities occur, the SWPPP shall identify the types of pollutants likely to be present in significant amounts (e.g., heavy metals, sediment). The following factors shall be considered: the mineralogy of the ore and waste rock (e.g., acid forming); toxicity and quantity of chemicals used, produced or discharged; the likelihood of contact with stormwater; vegetation of site, if any; and history of significant leaks and spills of toxic or hazardous pollutants. A summary of any existing ore or waste rock and overburden characterization data and test results for potential generation of acid rock shall also be included. If the ore or waste rock and overburden characterization data are updated due to a change in the ore type being mined, the SWPPP shall be updated with the new data.

3. Stormwater controls.

a. Routine facility inspections. Except for areas subject to clearing, grading, and excavation activities subject to subdivision E 2 of this section, sites shall be inspected at least quarterly unless adverse weather conditions make the site inaccessible. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

b. Employee training. Employee training shall be conducted at least annually at active mining and temporarily inactive sites. All employee training shall be documented in the SWPPP.

c. Structural control measures. In addition to the control measures required by Part III B 4, each of the following control measures shall be documented in the SWPPP. The potential pollutants identified in subdivision 2 of this subsection shall determine the priority and appropriateness of the control measures selected. If control measures are implemented or planned but are not listed here (e.g., substituting a less toxic chemical for a more toxic one), descriptions of them shall be included in the SWPPP.

(1) Stormwater diversion. A description of how and where stormwater will be diverted away from potential pollutant sources to prevent stormwater contamination. Control measures shall include one or more of the following:

(a) Interceptor dikes and swales;

(b) Diversion dikes, curbs, and berms;

(c) Pipe slope drains;

(d) Subsurface drains;

(e) Drainage and stormwater conveyance systems; or

(f) Equivalent measures.

(2) Capping. When capping of a contaminant source is necessary, the source being capped and materials and procedures used to cap the contaminant source shall be identified.

(3) Treatment. If treatment of a stormwater discharge is necessary to protect water quality, include a description of the type and location of stormwater treatment that will be used. Stormwater treatments include the following: chemical or physical systems, oil and water separators, artificial wetlands, etc. The permittee is encouraged to use both passive and active treatment of stormwater runoff. 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 Ore Mining and Dressing Point Source Category (40 CFR Part 440).

(4) Certification of discharge testing. The permittee shall test or evaluate all outfalls covered under this permit for the presence of specific mining-related nonstormwater discharges such as (e.g., seeps or adit discharges or discharges subject to effluent limitations guidelines (e.g., 40 CFR Part 440), such as mine drainage or process water). The permittee may certify in the SWPPP that a particular discharge composed of commingled stormwater and nonstormwater is covered under a separate VPDES permit; and that permit subjects the nonstormwater portion to effluent limitations prior to before any commingling. This certification shall identify the nonstormwater discharges, the applicable VPDES permits, the effluent limitations placed on the nonstormwater discharge by the permits, and the points at which the limitations are applied.

G. Termination of permit coverage.

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 subdivision 2 of this subsection.

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: (i) 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; (ii) soil-disturbing activities related to mining at the sites or portion of the site have been completed; (iii) the site or portion of the site has been stabilized to minimize soil erosion; and (iv) 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.

H. Inactive and unstaffed sites. Permittees in Sector G seeking to exercise a waiver from the quarterly visual monitoring and routine facility inspection requirements for inactive and unstaffed sites (including temporarily inactive sites) are conditionally exempt from the requirement to certify that "there are no industrial materials or activities exposed to stormwater" in Part I A 4.

This exemption is conditioned on the following:

1. If circumstances change and the facility becomes active or staffed, this exception no longer applies and the permittee shall immediately begin complying with the quarterly visual assessment and routine facility inspection requirements; and

2. The board department retains the authority to revoke this exemption and the monitoring waiver when 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 in subdivisions 1 and 2 of this subsection, if a facility is inactive and unstaffed, the permittee is waived from the requirement to conduct quarterly visual monitoring and routine facility inspections. The permittee is not waived from conducting at least one routine facility inspection per calendar year. The board department encourages the permittee to inspect the site more frequently when there is reason to believe that severe weather or natural disasters may have damaged control measures.

I. Benchmark monitoring and reporting requirements. There are no benchmark monitoring requirements for inactive and unstaffed sites that have received a waiver in accordance with Part I A 4 (Inactive and unstaffed sites).

1. Copper ore mining and dressing facilities. Active copper ore mining and dressing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 150-1 below.

2. Discharges from waste rock and overburden piles at active sites. Discharges from waste rock and overburden piles at active sites shall be analyzed for the parameters listed in Table 150-2. Facilities shall also monitor for the parameters listed in Table 150-3. The director may also notify the facility that additional monitoring must be performed to accurately characterize the quality and quantity of pollutants discharged from the waste rock or overburden piles.

Table 150-1 Sector G – Benchmark Monitoring Requirements - Copper Ore Mining and Dressing Facilities
Pollutants of Concern	Benchmark Concentration
Active Copper Ore Mining and Dressing Facilities (SIC Code 1021)
Total Suspended Solids (TSS)	100 mg/L

Table 150-2 Sector G – Benchmark Monitoring Requirements - Discharges from Waste Rock and Overburden Piles from Active Ore Mining or Dressing Facilities
Pollutants of Concern	Benchmark Concentration
Iron Ores; Copper Ores; Lead and Zinc Ores; Gold and Silver Ores; Ferroalloy Ores Except Vanadium; Miscellaneous Metal Ores (SIC Codes 1011, 1021, 1031, 1041, 1044, 1061, 1081, 1094, 1099)
Total Suspended Solids (TSS)	100 mg/L
Turbidity (NTUs)	50 NTU
pH	6.0 - 9.0 s.u.
Hardness (as CaCO3)	no benchmark value
Total Recoverable Antimony	640 μg/L
Total Recoverable Arsenic	50 150 μg/L
Total Recoverable Beryllium	130 μg/L
Total Recoverable Cadmium	2.1 1.8 μg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Lead	120 μg/L
Total Recoverable Mercury	1.4 μg/L
Total Recoverable Nickel	470 μg/L
Total Recoverable Selenium	5.0 μg/L
Total Recoverable Silver	3.8 3.2 μg/L
Total Recoverable Zinc	120 μg/L

Table 150-3 Sector G – Additional Monitoring Requirements for Discharges from Waste Rock and Overburden Piles from Active Ore Mining or Dressing Facilities
Type of Ore Mined	Pollutants of Concern
	TSS (mg/L)	pH	Metals, Total Recoverable
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).
Copper, Lead, Zinc, Gold, Silver and Molybdenum	X	X	Arsenic, Cadmium (H), Copper (H), Lead (H), Mercury, Zinc (H).
Uranium, Radium and Vanadium	X	X	Chemical Oxygen Demand, Arsenic, Radium (Dissolved and Total Recoverable), Uranium, Zinc (H).
Note: (H) indicates that hardness shall also be measured when this pollutant is measured.

9VAC25-151-160. Sector H - Coal mines and coal mining-related facilities.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from coal mining-related areas (SIC Major Group 12) if (i) they are not subject to effluent limitations guidelines under 40 CFR Part 434 or (ii) they are not subject to the standards of the Surface Mining Control and Reclamation Act of 1977 (SMCRA) (30 USC § 1201 et seq.) and the Virginia Department of Mines, Minerals and Energy's individual permit requirements.

The requirements of this section shall apply to stormwater discharges from coal mining-related activities exempt from SMCRA, including the public financed exemption, the 16-2/3% exemption, the private use exemption, the under 250 tons exemption, the nonincidental tipple exemption, and the exemption for coal piles and preparation plants associated with the end user. Stormwater discharges from the following portions of eligible coal mines and coal mining related facilities may be eligible for this permit: haul roads (nonpublic roads on which coal or coal refuse is conveyed), access roads (nonpublic roads providing light vehicular traffic within the facility property and to public roadways), railroad spurs, sidings, and internal haulage lines (rail lines used for hauling coal within the facility property and to off-site commercial railroad lines or loading areas); conveyor belts, chutes, and aerial tramway haulage areas (areas under and around coal or refuse conveyor areas, including transfer stations); and equipment storage and maintenance yards, coal handling buildings and structures, coal tipples, coal loading facilities, and inactive coal mines and related areas (abandoned and other inactive mines, refuse disposal sites, and other mining-related areas).

B. Special conditions. Prohibition of nonstormwater discharges. In addition to the general prohibition of nonstormwater discharges in Part I B 1, the following discharges are 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.

C. SWPPP requirements. In addition to the requirements of Part III, the SWPPP shall include at a minimum, the following items.

1. Site description.

a. Site map. The site map shall identify where any of the following may be exposed to precipitation or surface runoff:

(1) Haul and access roads;

(2) Railroad spurs, sliding, and internal hauling lines;

(3) Conveyor belts, chutes, and aerial tramways;

(4) Equipment storage and maintenance yards;

(5) Coal handling buildings and structures;

(6) Inactive mines and related areas;

(7) Acidic spoil, refuse or unreclaimed disturbed areas; and

(8) Liquid storage tanks containing pollutants such as (e.g., caustics, hydraulic fluids, and lubricants).

b. Summary of potential pollutant sources. A description of the potential pollutant sources from the following activities: 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.

2. Stormwater controls.

a. Good housekeeping. As part of the facility's good housekeeping program required by Part III B 4 b (1), the permittee shall consider the following: using sweepers, covered storage, and watering of haul roads to minimize dust generation; and conservation of vegetation (where possible) to minimize erosion.

b. Preventive maintenance. The permittee shall also perform inspections of storage tanks and pressure lines for fuels, lubricants, hydraulic fluid, or slurry to prevent leaks due to deterioration or faulty connections; or other equivalent measures.

c. Routine facility inspections. Sites shall be inspected at least quarterly unless adverse weather conditions make the site inaccessible. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

D. Inactive and unstaffed sites. Permittees in Sector H seeking to exercise a waiver from the quarterly visual monitoring and routine facility inspection requirements for inactive and unstaffed sites (including temporarily inactive sites) are conditionally exempt from the requirement to certify that "there are no industrial materials or activities exposed to stormwater" in Part I A 4.

This exemption is conditioned on the following:

1. If circumstances change and the facility becomes active or staffed, this exception no longer applies and the permittee shall immediately begin complying with the quarterly visual monitoring requirements and routine facility inspection requirements; and

2. The board department retains the authority to revoke this exemption and the monitoring waiver when 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 in subdivisions 1 and 2 of this subsection, if a facility is inactive and unstaffed, the permittee is waived from the requirement to conduct quarterly visual monitoring and routine facility inspections. The permittee is not waived from conducting a minimum of one annual site inspection. The board department encourages the permittee to inspect the site more frequently when there is reason to believe that severe weather or natural disasters may have damaged control measures.

E. Benchmark monitoring and reporting requirements. Coal mining facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 160. There are no benchmark monitoring requirements for inactive and unstaffed sites that have received a waiver in accordance with Part I A 4 (Inactive and unstaffed sites).

Table 160 Sector H - Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Coal Mines and Related Areas (SIC Codes 1221-1241)
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Iron	1.0 mg/L
Total Suspended Solids (TSS)	100 mg/L

9VAC25-151-180. Sector K - Hazardous waste treatment, storage, or disposal facilities.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities that treat, store, or dispose of hazardous wastes, including those that are operating under interim status or a permit under Subtitle C of the Resource Conservation and Recovery Act (RCRA) (Industrial Activity Code "HZ"). Disposal facilities that have been properly closed and capped, or clean closed, and have no significant materials exposed to stormwater, do not require this permit.

B. Special conditions. Prohibition of nonstormwater discharges. In addition to the general prohibition of nonstormwater discharges in Part I B 1, the following discharges are not covered by this permit: leachate, gas collection condensate, drained free liquids, contaminated groundwater, laboratory-derived wastewater 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.

C. Definitions.

"Contaminated stormwater" means stormwater that comes in direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater as defined in this section. Some specific areas of a landfill that may produce contaminated stormwater include 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 been in direct contact with the waste; and waste dumping areas.

"Drained free liquids" means aqueous wastes drained from waste containers (e.g., drums, etc.) prior to before landfilling.

"Landfill" means an area of land or an excavation in which wastes are placed for permanent disposal, that is not a land application or land treatment unit, surface impoundment, underground injection well, waste pile, salt dome formation, a salt bed formation, an underground mine, or a cave as these terms are defined in 40 CFR 257.2, 40 CFR 258.2 and 40 CFR 260.10.

"Landfill wastewater," as defined in 40 CFR Part 445 (Landfills Point Source Category), means all wastewater associated with, or produced by, landfilling activities except for sanitary wastewater, noncontaminated stormwater, contaminated groundwater, and wastewater from recovery pumping wells. Landfill wastewater includes leachate, gas collection condensate, drained free liquids, laboratory derived wastewater, contaminated stormwater, 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.

"Leachate" means liquid that has passed through or emerged from solid waste and contains soluble, suspended, or miscible materials removed from such waste.

"Noncontaminated stormwater" means stormwater that does not come into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater as defined above. Noncontaminated stormwater includes stormwater that flows off the cap, cover, intermediate cover, daily cover, or final cover of the landfill.

D. Numeric effluent limitations. As set forth at 40 CFR Part 445 Subpart A, the numeric limitations in Table 180-1 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:

1. Landfills operated in conjunction with other industrial or commercial operations when the landfill only receives wastes generated by the industrial or commercial operation directly associated with the landfill;

2. 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 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 the other wastes received are of similar nature to the wastes generated by the industrial or commercial operation;

3. 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 nonlandfill 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

4. 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.

Table 180-1 Sector K – Numeric Effluent Limitations
Parameter	Effluent Limitations
	Maximum Daily	Maximum Monthly Average
Hazardous Waste Treatment, Storage, or Disposal Facilities (Industrial Activity Code "HZ") Subject to the Provisions of 40 CFR Part 445 Subpart A.
Biochemical Oxygen Demand (BOD5)	220 mg/L	56 mg/L
Total Suspended Solids (TSS)	88 mg/L	27 mg/L
Ammonia	10 mg/L	4.9 mg/L
Alpha Terpineol	0.042 mg/L	0.019 mg/L
Aniline	0.024 mg/L	0.015 mg/L
Benzoic Acid	0.119 mg/L*	0.073 mg/L
Naphthalene	0.059 mg/L	0.022 mg/L
p-Cresol	0.024 mg/L	0.015 mg/L
Phenol	0.048 mg/L	0.029 mg/L
Pyridine	0.072 mg/L	0.025 mg/L
Arsenic (Total)	1.1 mg/L	0.54 mg/L
Chromium (Total)	1.1 mg/L	0.46 mg/L
Zinc (Total)	0.535 mg/L*	0.296 mg/L*
pH	Within the range of 6.0 - 9.0 s.u.
*These effluent limitations are three significant digits for reporting purposes.

E. Benchmark monitoring and reporting requirements. Permittees with hazardous waste treatment, storage, or disposal facilities (TSDFs) are required to monitor their stormwater discharges for the pollutants of concern listed in Table 180-2. These benchmark monitoring concentrations apply to stormwater discharges associated with industrial activity other than contaminated stormwater discharges from landfills subject to the numeric effluent limitations set forth in Table 180-1.

Table 180-2 Sector K – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Hazardous Waste Treatment, Storage, or Disposal Facilities (Industrial Activity Code "HZ")
Total Kjeldahl Nitrogen (TKN)	1.5 mg/L
Total Suspended Solids (TSS)	100 mg/L
Total Organic Carbon (TOC)	110 mg/L
Total Recoverable Arsenic	50 150 μg/L
Total Recoverable Cadmium	2.1 1.8 μg/L
Total Cyanide	22 μg/L
Total Recoverable Lead	120 μg/L
Total Magnesium	64 μg/L
Total Recoverable Mercury	1.4 μg/L
Total Recoverable Selenium	5.0 μg/L
Total Recoverable Silver	3.8 3.2 μg/L

9VAC25-151-190. Sector L - Landfills, land application sites and open dumps.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from waste disposal at landfills, land application sites, and open dumps that receive or have received industrial wastes (Industrial Activity Code "LF"), including sites subject to regulation under Subtitle D of the Resource Conservation and Recovery Act (RCRA). Landfills, land application sites, and open dumps that have stormwater discharges from other types of industrial activities such as (e.g., vehicle maintenance, truck washing, and recycling) may be subject to additional requirements specified elsewhere in this permit. This permit does not cover discharges from landfills that receive only municipal wastes. Landfills (including landfills in "post-closure care") that have been properly closed and capped in accordance with 9VAC20-81-160 and 9VAC20-81-170 and have no significant materials exposed to stormwater do not require this permit. Landfills closed in accordance with regulations or permits in effect prior to before December 21, 1988, do not require this permit, unless significant materials are exposed to stormwater.

B. Special conditions. Prohibition of nonstormwater discharges. In addition to the general nonstormwater prohibition in Part I B 1, the following discharges are not covered by this permit: leachate, gas collection condensate, drained free liquids, contaminated ground water, laboratory wastewater, 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.

C. Definitions.

"Contaminated stormwater" means stormwater that comes in 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 working face of an active landfill; the areas around wastewater treatment operations; trucks, equipment, or machinery that has been in direct contact with the waste; and waste dumping areas.

"Drained free liquids" means aqueous wastes drained from waste containers (e.g., drums, etc.) prior to before landfilling.

"Landfill wastewater," as defined in 40 CFR Part 445 (Landfills Point Source Category), means all wastewater associated with, or produced by, landfilling activities except for sanitary wastewater, noncontaminated stormwater, contaminated groundwater, and wastewater from recovery pumping wells. Landfill wastewater includes leachate, gas collection condensate, drained free liquids, laboratory derived wastewater, contaminated stormwater, 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.

"Leachate" means liquid that has passed through or emerged from solid waste and contains soluble, suspended, or miscible materials removed from such the waste.

"Noncontaminated stormwater" means stormwater that does not come into direct contact with landfill wastes, the waste handling and treatment areas, or landfill wastewater as defined above. Noncontaminated stormwater includes stormwater that flows off the cap, intermediate cover, or final cover of the landfill.

"Open dump" means a site on which any solid waste is placed, discharged, deposited, injected, dumped, or spilled so as to present a threat of a release of harmful substances into the environment or present a hazard to human health. Such a site is subject to the open dump criteria in 9VAC20-81-45.

D. Stormwater controls. In addition to the requirements in Part III, the SWPPP shall include, at a minimum, the following items:

1. Preventive maintenance program. As part of the preventive maintenance program, the permittee shall maintain all elements of leachate collection and treatment systems to prevent commingling of leachate with stormwater and the integrity and effectiveness of any intermediate or final cover (including making repairs to the cover as necessary), to minimize the effects of settlement, sinking, and erosion.

2. Routine facility inspections.

a. Inspections of active sites. Operating landfills, open dumps, and land application sites shall be inspected at least once every seven days. Qualified personnel staff shall inspect areas of landfills that have not yet been finally stabilized, active land application areas, areas used for storage of materials or wastes that are exposed to precipitation, stabilization and structural control measures, leachate collection and treatment systems, and locations where equipment and waste trucks enter and exit the site. Erosion and sediment control measures shall be observed to ensure they are operating correctly. For stabilized sites and areas where land application has been completed, inspections shall be conducted at least once every month.

b. Inspections of inactive sites. Inactive landfills, open dumps, and land application sites shall be inspected at least quarterly. Qualified personnel staff shall inspect landfill (or open dump) stabilization and structural erosion control measures and leachate collection and treatment systems and all closed land application areas.

3. Recordkeeping and internal reporting procedures. Landfill and open dump owners shall provide for a tracking system for the types of wastes disposed of in each cell or trench of a landfill or open dump. Land application site owners shall track the types and quantities of wastes applied in specific areas.

4. Annual outfall evaluation for unauthorized discharges. The evaluation shall also be conducted for the presence of leachate and vehicle washwater.

5. Sediment and erosion control plan. Landfill and open dump owners shall provide for temporary stabilization of materials stockpiled for daily, intermediate, and final cover. Stabilization practices to consider include temporary seeding, mulching, and placing geotextiles on the inactive portions of the stockpiles. Landfill and open dump owners shall provide for temporary stabilization of inactive areas of the landfill or open dump which that have an intermediate cover but no final cover. Landfill and open dump owners shall provide for temporary stabilization of any landfill or open dumping areas which have received a final cover until vegetation has established itself. Land application site owners shall also stabilize areas where waste application has been completed until vegetation has been established.

E. Numeric effluent limitations. As set forth at 40 CFR Part 445 Subpart B, the numeric limitations in Table 190-1 apply to contaminated stormwater discharges from municipal solid waste landfills (MSWLFs) that have not been closed in accordance with 40 CFR 258.60, and contaminated stormwater discharges from those landfills that are subject to the provisions of 40 CFR Part 257 (these include construction and debris landfills and industrial landfills) except for discharges from any of the following facilities:

1. Landfills operated in conjunction with other industrial or commercial operations when the landfill only receives wastes generated by the industrial or commercial operation directly associated with the landfill;

2. 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 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 the other wastes received are of similar nature to the wastes generated by the industrial or commercial operation;

3. 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 nonlandfill 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

4. 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.

Table 190-1 Sector L – Numeric Effluent Limitations
Parameter	Effluent Limitations
	Maximum Daily	Maximum Monthly Average
Landfills (Industrial Activity Code "LF") that are Subject to the Requirements of 40 CFR Part 445 Subpart B.
Biochemical Oxygen Demand (BOD5)	140 mg/L	37 mg/L
Total Suspended Solids (TSS)	88 mg/L	27 mg/L
Ammonia	10 mg/L	4.9 mg/L
Alpha Terpineol	0.033 mg/L	0.016 mg/L
Benzoic Acid	0.12 mg/L	0.071 mg/L
p-Cresol	0.025 mg/L	0.014 mg/L
Phenol	0.026 mg/L	0.015 mg/L
Zinc (Total)	0.20 mg/L	0.11 mg/L
pH	Within the range of 6.0 - 9.0 s.u.

F. Benchmark monitoring and reporting requirements. Landfills, land application, and open dump sites are required to monitor their stormwater discharges for the pollutants of concern listed in Table 190-2. These benchmark monitoring concentrations apply to stormwater discharges associated with industrial activity other than contaminated stormwater discharges from landfills subject to the numeric effluent limitations set forth in Table 190-1.

Table 190-2 Sector L – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Landfills, Land Application Sites and Open Dumps (Industrial Activity Code "LF").
Total Suspended Solids (TSS)	100 mg/L

9VAC25-151-200. Sector M - Automobile salvage yards.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities engaged in dismantling or wrecking used motor vehicles for parts recycling or resale, and for scrap (SIC Code 5015).

B. Stormwater controls. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following items:

1. Spill and leak prevention procedures. All vehicles that are intended to be dismantled shall be properly drained of all fluids prior to before being dismantled or crushed, or other equivalent means shall be taken to prevent leaks or spills of fluids upon arrival at the site, or as soon thereafter as feasible. All drained fluids shall be managed to minimize leaks or spills.

2. Inspections. Upon arrival at the site, or as soon thereafter as feasible, vehicles shall be inspected for leaks. Any equipment containing oily parts, hydraulic fluids, any other types of fluids, or mercury switches shall be inspected at least quarterly (four times per year) for signs of leaks. All vessels, containers, or tanks and areas where hazardous materials and general automotive fluids are stored, including mercury switches, brake fluid, transmission fluid, radiator water, and antifreeze, shall be inspected at least quarterly for leaks. Quarterly inspection records shall be maintained with the SWPPP.

3. Employee training. Employee training shall, at a minimum, address the following areas when applicable to a facility: proper handling (collection, storage, and disposal) of oil, used mineral spirits, antifreeze, mercury switches, and solvents.

4. Management of runoff. The permittee shall implement control measures to divert, infiltrate, reuse, contain, or otherwise reduce stormwater runoff to minimize pollutants in discharges from the facility. The following management practices shall be used to prevent or reduce the discharge of pollutants to surface waters:

a. Berms or drainage ditches on the property line used to help prevent run-on from neighboring properties;

b. Berms for uncovered outdoor storage of oily parts and engine blocks;

c. Aboveground liquid storage;

d. The installation of detention ponds, filtering devices, or oil/water separators; and

e. Another control measure used to prevent or reduce the discharge of pollutants to surface waters.

C. Benchmark monitoring and reporting requirements. Automobile salvage yards are required to monitor their stormwater discharges for the pollutants of concern listed in Table 200.

Table 200 Sector M – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Automobile Salvage Yards (SIC Code 5015)
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Lead	120 μg/L

9VAC25-151-210. Sector N - Scrap recycling and waste recycling facilities and material recovery facilities (MRF).

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities typically identified as SIC code 5093 that are engaged in the processing, reclaiming, and wholesale distribution of scrap and waste materials such as ferrous and nonferrous metals, paper, plastic, cardboard, glass, animal hides (these types of activities are typically identified as SIC Code 5093), and facilities that are engaged in reclaiming and recycling liquid wastes such as used oil, antifreeze, mineral spirits, and industrial solvents (also identified as SIC Code 5093). Separate permit requirements have been established for recycling facilities that only receive source-separated recyclable materials primarily from nonindustrial and residential sources (also identified as SIC Code 5093) (e.g., common consumer products including paper, newspaper, glass, cardboard, plastic containers, aluminum, and tin cans).

Separate permit requirements have also been established for facilities that are engaged in dismantling ships, marine salvaging, and marine wrecking–ships for scrap (SIC Code 4499, limited to those listed; for others in SIC Code 4499 not listed in this subsection, see Sector Q (9VAC25-151-240)).

B. Special conditions. Prohibition of nonstormwater discharges. Discharges from containment areas in the absence of a storm event are prohibited unless covered by a separate VPDES permit.

C. SWPPP requirements. In addition to the requirements of Part III, the following items are applicable:

1. Scrap recycling and waste recycling facilities (nonsource-separated, nonliquid recyclable materials). The following SWPPP special conditions have been established 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 only accept recyclable materials primarily from nonindustrial and residential sources.

a. Inbound recyclable and waste material control program. The SWPPP shall include a recyclable and waste material inspection program to minimize the likelihood of receiving materials that may be significant pollutant sources to stormwater discharges. Control measures shall include one or more of the following:

(1) Provide information and education flyers, brochures, and pamphlets to suppliers of scrap and recyclable waste materials on draining and properly disposing of residual fluids prior to before delivery to the facility (e.g., from vehicles and equipment engines, radiators, and transmissions, oil-filled transformers, and individual containers or drums), and on removal of mercury switches prior to before delivery to the facility;

(2) Establish procedures to minimize the potential of any residual fluids from coming in contact with precipitation or runoff;

(3) 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 subdivision 2 f of this subsection;

(4) Provide training targeted for those personnel staff engaged in the inspection and acceptance of inbound recyclable materials; or

(5) Establish procedures to ensure that liquid wastes, including used oil, are stored in materially compatible and nonleaking containers and disposed or recycled in accordance with all requirements under the Resource Conservation and Recovery Act (RCRA), and other state or local requirements.

b. Scrap and waste material stockpiles and storage (outdoor). The SWPPP shall describe measures and controls to minimize contact of stormwater runoff with stockpiled materials, processed materials, and nonrecyclable wastes. Control measures shall include one or more of the following:

(1) Permanent or semipermanent covers;

(2) The use of sediment traps, vegetated swales and strips, catch basin filters, and sand filters to facilitate settling or filtering of pollutants;

(3) Diversion of runoff away from storage areas via dikes, berms, containment trenches, culverts, and surface grading;

(4) Silt fencing;

(5) Oil/water separators, sumps, and dry adsorbents for areas where potential sources of residual fluids are stockpiled (e.g., automotive engine storage areas); or

(6) Another control measure used to prevent or reduce the discharge of pollutants to surface waters.

c. Stockpiling of turnings exposed to cutting fluids (outdoor storage). The SWPPP shall implement measures necessary to minimize contact of surface runoff with residual cutting fluids. Control measures shall include one or more of the following:

(1) Storage of all turnings exposed to cutting fluids under some form of permanent or semipermanent cover. Stormwater discharges from these areas are permitted provided the runoff is first treated by an oil/water separator or its equivalent. Procedures to collect, handle, and dispose or recycle residual fluids that may be present shall be identified in the SWPPP; or

(2) Establish dedicated containment areas for all turnings that have been exposed to cutting fluids. Stormwater runoff from these areas can be discharged provided:

(a) The containment areas are constructed of either concrete, asphalt, or other equivalent type of impermeable material;

(b) There is a barrier around the perimeter of the containment areas to prevent contact with stormwater run-on (e.g., berms, curbing, and elevated pads, etc.);

(c) There is a drainage collection system for runoff generated from containment areas;

(d) There is a schedule to maintain the oil/water separator (or its equivalent); and

(e) Procedures are identified for the proper disposal or recycling of collected residual fluids.

d. Scrap and waste material stockpiles and storage (covered or indoor storage). The SWPPP shall address measures and controls to minimize contact of residual liquids and particulate matter from materials stored indoors or under cover from coming in contact with surface runoff. Control measures shall include one or more of the following:

(1) Good housekeeping measures, including the use of dry absorbent or wet vacuum cleanup methods, to contain, dispose, or recycle residual liquids originating from recyclable containers, or mercury spill kits from storage of mercury switches;

(2) Prohibiting the practice of allowing washwater from tipping floors or other processing areas from discharging;

(3) Disconnecting or sealing off all floor drains if necessary to prevent a discharge; or

(4) Another control measure used to prevent or reduce the discharge of pollutants to surface waters.

e. Scrap and recyclable waste processing areas. The SWPPP shall include measures and controls to minimize surface runoff from coming in contact with scrap processing equipment. In the case of processing equipment that generate visible amounts of particulate residue (e.g., shredding facilities), the SWPPP shall describe measures to minimize the contact of residual fluids and accumulated particulate matter with runoff (i.e., through good housekeeping, and preventive maintenance, etc.). Control measures shall include one or more of the following:

(1) A schedule of regular inspections of equipment for leaks, spills, malfunctioning, worn, or corroded parts or equipment;

(2) A preventive maintenance program for processing equipment;

(3) Removal of mercury switches from the hood and trunk lighting units, and removal of anti-lock brake system units containing mercury switches;

(4) Use of dry-absorbents or other cleanup practices to collect and to dispose of or recycle spilled or leaking fluids, or use of mercury spill kits for spills from storage of mercury switches;

(5) Installation of low-level alarms or other equivalent protection devices on unattended hydraulic reservoirs over 150 gallons in capacity. Alternatively, provide secondary containment with sufficient volume to contain the entire volume of the reservoir;

(6) Containment or diversion structures such as (e.g., dikes, berms, culverts, trenches, elevated concrete pads, and grading) to minimize contact of stormwater runoff with outdoor processing equipment or stored materials;

(7) Oil/water separators or sumps;

(8) Permanent or semipermanent covers in processing areas where there are residual fluids and grease;

(9) Retention and detention basins or ponds, sediment traps, vegetated swales or strips, to facilitate pollutant settling and filtration;

(10) Catch basin filters or sand filters; or

(11) Another control measure used to prevent or reduce the discharge of pollutants to surface waters.

f. Scrap lead-acid battery program. The SWPPP shall address measures and controls for the proper handling, storage, and disposal of scrap lead-acid batteries. Control measures shall include one or more of the following:

(1) Segregate scrap lead-acid batteries from other scrap materials and store under cover;

(2) A description of procedures and measures for the proper handling, storage, and disposal of cracked or broken batteries;

(3) A description of measures to collect and dispose of leaking lead-acid battery fluid;

(4) A description of measures to minimize and, whenever possible, eliminate exposure of scrap lead-acid batteries to precipitation or runoff; or

(5) A description of employee training for the management of scrap batteries.

g. Spill prevention and response procedures. The SWPPP shall include measures to minimize stormwater contamination at loading and unloading areas, and from equipment or container failures. Control measures shall include one or more of the following:

(1) Description of spill prevention and response measures to address areas that are potential sources of fluid leaks or spills;

(2) Immediate containment and cleanup of spills and leaks. If malfunctioning equipment is responsible for the spill or leak, repairs shall also be conducted as soon as possible;

(3) Cleanup procedures shall be identified in the SWPPP, including the use of dry absorbents. Where dry absorbent cleanup methods are used, an adequate supply of dry absorbent material shall be maintained on-site. Used absorbent material shall be disposed of properly;

(4) Drums containing liquids, especially oil and lubricants, shall be stored indoors, in a bermed area, in overpack containers or spill pallets, or in similar containment devices;

(5) Overfill prevention devices shall be installed on all fuel pumps or tanks;

(6) Drip pans or equivalent measures shall be placed under any leaking piece of stationary equipment until the leak is repaired. The drip pans shall be inspected for leaks and potential overflow and all liquids properly disposed of in accordance with RCRA requirements; or

(7) An alarm or pump shut off system shall be installed on outdoor equipment with hydraulic reservoirs exceeding 150 gallons in order to prevent draining the tank contents in the event of due to a line break. Alternatively, the equipment may have a secondary containment system capable of containing the contents of the hydraulic reservoir plus adequate freeboard for precipitation. A mercury spill kit shall be used for any release of mercury from switches, anti-lock brake systems, and switch storage areas.

h. Inspection program. All designated areas of the facility and equipment identified in the SWPPP shall be inspected at least quarterly. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

i. Supplier notification program. The SWPPP shall include a program to notify major suppliers which scrap materials will not be accepted at the facility or are only accepted under certain conditions.

2. Waste recycling facilities (liquid recyclable materials).

a. Waste material storage (indoor). The SWPPP shall include measures and controls to eliminate contact between residual liquids from waste materials stored indoors and surface runoff. The SWPPP may refer to applicable portions of other existing plans such as SPCC plans required under 40 CFR Part 112. Control measures shall include one or more of the following:

(1) Procedures for material handling (including labeling and marking);

(2) A sufficient supply of dry-absorbent materials or a wet vacuum system to collect spilled or leaked materials (spilled or leaking mercury should never be vacuumed);

(3) An appropriate containment structure, such as (e.g., trenches, curbing, gutters, or other equivalent measures); or

(4) A drainage system, including appurtenances (e.g., pumps or ejectors, or manually operated valves), to handle discharges from diked or bermed areas. Drainage shall be discharged to an appropriate treatment facility, sanitary sewer system, or otherwise disposed of properly. Discharges from these areas may require coverage under a separate VPDES permit or industrial user permit under the pretreatment program.

b. Waste material storage (outdoor). The SWPPP shall describe measures and controls to minimize contact between stored residual liquids and precipitation or runoff. The SWPPP may refer to applicable portions of other existing plans such as (e.g., SPCC plans required under 40 CFR Part 112). Discharges of precipitation from containment areas containing used oil shall also be in accordance with applicable sections of 40 CFR Part 112. Control measures shall include one or more of the following:

(1) Appropriate containment structures (e.g., dikes, berms, curbing, pits) to store the volume of the largest single tank, with sufficient extra capacity for precipitation;

(2) Drainage control and other diversionary structures;

(3) For storage tanks, provide corrosion protection, or leak detection systems; or

(4) Dry-absorbent materials or a wet vacuum system to collect spills.

c. Truck and rail car waste transfer areas. The SWPPP shall describe measures and controls to minimize pollutants in discharges from truck and rail car loading and unloading areas. The SWPPP shall also address measures to clean up minor spills and leaks resulting from the transfer of liquid wastes. Control measures shall include one or more of the following:

(1) Containment and diversionary structures to minimize contact with precipitation or runoff;

(2) Use of dry cleanup methods, wet vacuuming, roof coverings, or runoff controls; or

(3) Another control measure used to prevent or reduce the discharge of pollutants to surface waters.

d. Inspections. Inspections shall be made quarterly and shall also include all areas where waste is generated, received, stored, treated, or disposed that are exposed to either precipitation or stormwater runoff. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

3. Recycling facilities (source separated materials). The following SWPPP special conditions have been established for facilities that receive only source-separated recyclable materials primarily from nonindustrial and residential sources.

a. Inbound recyclable material control. The SWPPP shall include an inbound materials inspection program to minimize the likelihood of receiving nonrecyclable materials (e.g., hazardous materials) that may be a significant source of pollutants in surface runoff. Control measures shall include one or more of the following:

(1) Provide information and education measures to inform suppliers of recyclable materials on the types of materials that are acceptable and those that are not acceptable;

(2) A description of training measures for drivers responsible for pickup of recyclable materials;

(3) Clearly mark public drop-off containers regarding which materials can be accepted;

(4) Rejecting nonrecyclable wastes or household hazardous wastes at the source; or

(5) Establish procedures for the handling and disposal of nonrecyclable materials.

b. Outdoor storage. The SWPPP shall include procedures to minimize the exposure of recyclable materials to surface runoff and precipitation. The SWPPP shall include good housekeeping measures to prevent the accumulation of particulate matter and fluids, particularly in high traffic areas. Control measures shall include one or more of the following:

(1) Provide totally-enclosed drop-off containers for the public;

(2) Install a sump and pump with each containment pit, and treat or discharge collected fluids to a sanitary sewer system;

(3) Provide dikes and curbs for secondary containment (e.g., around bales of recyclable waste paper);

(4) Divert surface runoff away from outside material storage areas;

(5) Provide covers over containment bins, dumpsters, roll-off boxes; or

(6) Store the equivalent one day's volume of recyclable materials indoors.

c. Indoor storage and material processing. The SWPPP shall include measures to minimize the release of pollutants from indoor storage and processing areas. Control measures shall include one or more of the following:

(1) Schedule routine good housekeeping measures for all storage and processing areas;

(2) Prohibit a practice of allowing tipping floor washwaters from draining to any portion of the storm sewer system; or

(3) Provide employee training on pollution prevention practices.

d. Vehicle and equipment maintenance. The SWPPP shall also provide for control measures in those areas where vehicle and equipment maintenance is occurring outdoors. Control measures shall include one or more of the following:

(1) Prohibit vehicle and equipment washwater discharges;

(2) Minimize or eliminate outdoor maintenance areas, wherever possible;

(3) Establish spill prevention and clean-up procedures in fueling areas;

(4) Avoid topping off fuel tanks;

(5) Divert runoff from fueling areas;

(6) Store lubricants and hydraulic fluids indoors; or

(7) Provide employee training on proper, handling, storage of hydraulic fluids and lubricants.

5. Facilities engaged in dismantling ships, marine salvaging, and marine wrecking—ships for scrap. The following SWPPP special conditions have been established for facilities that are engaged in dismantling ships, marine salvaging, and marine wrecking—ships for scrap.

Vessel breaking and scrapping activities. Scrapping of vessels shall be accomplished ashore beyond the range of mean high tide, whenever practicable. If this activity must be conducted while a vessel is afloat or grounded in state waters, then the permittee shall employ control measures to reduce the amount of pollutants released. The following control measures shall be implemented during those periods when vessels (ships, barges, yachts, etc.) are brought to the facility's site for recycling, scrapping, and storage prior to before scrapping.

a. Fixed or floating platforms sufficiently sized and constructed to catch and prevent scrap materials and pollutants from entering surface waters (or equivalent measures approved by the board department) shall be used as work surfaces when working on or near the water surface. These platforms shall be cleaned as required to prevent pollutants from entering surface waters and at the end of each work shift. All scrap metals and pollutants shall be collected in a manner to prevent releases.

b. There shall be no discharge of oil or oily wastewater at the facility. Drip pans and other protective devices shall be required for all oil and oily waste transfer operations to catch incidental spillage and drips from hose nozzles, hose racks, drums, or barrels. Drip pans and other protective devices shall be inspected and maintained to prevent releases. Oil and oily waste shall be disposed at a permitted facility and adequate documentation of off-site disposition shall be retained for review by the board before upon request.

c. During the storage, breaking, and scrapping period, oil containment booms shall be deployed either around the vessel being scrapped, or across the mouth of the facility's wetslip, to contain pollutants in the event of a spill. Booms shall be inspected, maintained, and repaired as needed. Oil, grease and fuel spills shall be prevented from reaching surface waters. Cleanup shall be carried out immediately after an oil, grease, or fuel spill is detected.

d. Paint and solvent spills shall be immediately, upon discovery of the spills, cleaned up to prevent pollutants from reaching storm drains, deck drains, and surface waters.

e. Contaminated bilge and ballast water shall not be discharged to surface waters. If it becomes necessary to dispose of contaminated bilge and ballast waters during a vessel breaking activity, the wastewater shall be disposed at a permitted facility and adequate documentation of off-site disposition shall be retained for review by the board department upon request.

D. Benchmark monitoring and reporting requirements. Scrap recycling and waste recycling facilities (both source-separated and nonsource-separated facilities), and facilities engaged in dismantling ships, marine salvaging, and marine wrecking—ships for scrap are required to monitor their stormwater discharges for the pollutants of concern listed in Table 210.

Table 210 Sector N – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Scrap Recycling and Waste Recycling Facilities (nonsource-separated facilities only) (SIC Code 5093)
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Cadmium	2.1 1.8 μg/L
Total Recoverable Chromium	16 μg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Lead	120 μg/L
Total Recoverable Zinc	120 μg/L
Scrap Recycling and Waste Recycling Facilities (source-separated facilities) (SIC Code 5093)
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Aluminum1	750 1,100 μg/L
Total Recoverable Cadmium1	2.1 1.8 μg/L
Total Recoverable Chromium1	16 μg/L
Total Recoverable Copper1	18 13 μg/L
Total Recoverable Iron1	1.0 mg/L
Total Recoverable Lead1	120 μg/L
Total Recoverable Zinc1	120 μg/L
1Metals monitoring is only required at source-separated facilities for the specific metals listed above that are received at the facility.
Facilities Engaged in Dismantling Ships, Marine Salvaging, and Marine Wrecking - Ships for Scrap (SIC Code 4499, limited to list)
Total Recoverable Aluminum	750 1,100 μg/L
Total Recoverable Cadmium	2.1 1.8 μg/L
Total Recoverable Chromium	16 μg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Lead	120 μg/L
Total Recoverable Zinc	120 μg/L
Total Suspended Solids (TSS)	100 mg/L

9VAC25-151-220. Sector O - Steam electric generating facilities.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from steam electric power generating facilities using coal, natural gas, oil, nuclear energy, etc. to produce a steam source, including coal handling areas (Industrial Activity Code "SE").

Stormwater discharges from coal pile runoff subject to numeric effluent limitations are eligible for coverage under this permit, but are subject to the limitations established by Part I A 1 c (2).

Stormwater discharges from ancillary facilities (e.g., fleet centers, gas turbine stations, and substations) that are not contiguous to a steam electric power generating facility are not covered by this permit. Heat capture and heat recovery combined cycle generation facilities are also not covered by this permit; however, dual fuel co-generation facilities that generate electric power are included.

B. Stormwater controls. Good housekeeping measures.

1. Fugitive dust emissions. The permittee shall describe and implement measures that prevent or minimize fugitive dust emissions from coal and ash handling areas. The permittee shall minimize off-site tracking of coal dust and ash. Control measures to consider include installing specially designed tires, or washing vehicles in a designated area before they leave the site, and controlling the wash water.

2. Delivery vehicles. The SWPPP shall describe measures that prevent or minimize contamination of stormwater runoff from delivery vehicles arriving on the plant site. At a minimum the permittee shall consider the following:

a. Develop procedures for the inspection of delivery vehicles arriving on the plant site, and ensure overall integrity of the body or container; and

b. Develop procedures to deal with leakage and spillage from vehicles or containers.

3. Fuel oil unloading areas. The SWPPP shall describe measures that prevent or minimize contamination of precipitation or surface runoff from fuel oil unloading areas. At a minimum the permittee shall consider using the following measures, or an equivalent:

a. Use of containment curbs in unloading areas;

b. During deliveries, having station personnel staff familiar with spill prevention and response procedures present to ensure that any leaks and spills are immediately contained and cleaned up; and

c. Use of spill and overflow protection. Drip pans, drip diapers, or other containment devices may be placed beneath fuel oil connectors to contain potential spillage during deliveries or from leaks at the connectors.

4. Chemical loading and unloading areas. The permittee shall describe and implement measures that prevent or minimize the contamination of precipitation or surface runoff from chemical loading and unloading areas. At a minimum the permittee shall consider using the following measures (or their equivalents):

a. Use of containment curbs at chemical loading and unloading areas to contain spills;

b. During deliveries, having station personnel staff familiar with spill prevention and response procedures present to ensure that any leaks or spills are immediately contained and cleaned up; and

c. Covering chemical loading and unloading areas, and storing chemicals indoors.

5. Miscellaneous loading and unloading areas. The permittee shall describe and implement measures that prevent or minimize the contamination of stormwater runoff from loading and unloading areas. The permittee shall consider the following, at a minimum (or their equivalents):

a. Covering the loading area;

b. Grading, berming, or curbing around the loading area to divert run-on; or

c. Locating the loading and unloading equipment and vehicles so that leaks are contained in existing containment and flow diversion systems.

6. Liquid storage tanks. The permittee shall describe and implement measures that prevent or minimize contamination of stormwater runoff from aboveground liquid storage tanks. At a minimum the permittee shall consider employing the following measures (or their equivalents):

a. Use of protective guards around tanks;

b. Use of containment curbs;

c. Use of spill and overflow protection; and

d. Use of dry cleanup methods.

7. Large bulk fuel storage tanks. The permittee shall describe and implement measures that prevent or minimize contamination of stormwater runoff from large bulk fuel storage tanks. At a minimum the permittee shall consider employing containment berms (or its equivalent). The permittee shall also comply with applicable state and federal laws, including Spill Prevention Control and Countermeasures (SPCC).

8. Spill reduction measures. The permittee shall describe and implement measures to reduce the potential for an oil or chemical spill, or reference the appropriate section of their SPCC plan. The structural integrity of all aboveground tanks, pipelines, pumps, and other related equipment shall be visually inspected as part of the routine facility inspection. All repairs deemed necessary based on the findings of the inspections shall be completed immediately to reduce the incidence of spills and leaks occurring from such faulty equipment.

9. Oil bearing equipment in switchyards. The permittee shall describe and implement measures to prevent or minimize contamination of surface runoff from oil bearing equipment in switchyard areas. The permittee shall consider the use of level grades and gravel surfaces to retard flows and limit the spread of spills, and the collection of stormwater runoff in perimeter ditches.

10. Residue hauling vehicles. All residue hauling vehicles shall be inspected for proper covering over the load, adequate gate sealing, and overall integrity of the container body. Vehicles without load coverings or adequate gate sealing, or with leaking containers or beds shall be repaired as soon as practicable.

11. Ash loading areas. The permittee shall describe and implement procedures to reduce or control the tracking of ash and residue from ash loading areas. Where practicable, clear the ash building floor and immediately adjacent roadways of spillage, debris, and excess water before departure of each loaded vehicle.

12. Areas adjacent to disposal ponds or landfills. The permittee shall describe and implement measures that prevent or minimize contamination of stormwater runoff from areas adjacent to disposal ponds or landfills. The permittee shall develop procedures to:

a. Reduce ash residue which that may be tracked on to access roads traveled by residue trucks or residue handling vehicles; and

b. Reduce ash residue on exit roads leading into and out of residue handling areas.

13. Landfills, scrapyards, surface impoundments, open dumps, general refuse sites. The SWPPP shall address and include appropriate control measures to minimize the potential for contamination of runoff from landfills, scrapyards, surface impoundments, open dumps, and general refuse sites.

C. Numeric effluent limitations. Permittees with point sources of coal pile runoff associated with steam electric power generation shall monitor these stormwater discharges for the presence of TSS and for pH at least annually in accordance with Part I A 1 c (2).

D. Benchmark monitoring and reporting requirements. Steam electric power generating facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 220.

Table 220 Sector O – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Steam Electric Generating Facilities (Industrial Activity Code "SE")
Total Recoverable Iron	1.0 mg/L

9VAC25-151-240. Sector Q - Water transportation and ship and boat building and repairing yards.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with the following industrial activities:

1. Water transportation facilities identified by SIC Codes 4412-4499 (except SIC Code 4499 facilities as specified in Sector N - 9VAC25-151-210). The water transportation industry includes facilities engaged in foreign or domestic transport of freight or passengers in deep sea or inland waters, marine cargo handling operations, ferry operations, towing and tugboat services, and marinas.

2. Ship building and repairing and boat building and repairing facilities identified by SIC Codes 3731 and 3732. The U.S. Coast Guard refers to a vessel 65 feet or greater in length as a "ship" and a vessel smaller than 65 feet as a "boat."

B. Special conditions. Prohibition of nonstormwater discharges. In addition to the general nonstormwater prohibition in Part I B 1, the following discharges are not covered by this permit: bilge and ballast water, sanitary wastes, pressure wash water, and cooling water originating from vessels.

C. Stormwater controls.

1. Good housekeeping.

a. Pressure washing area. As defined by this permit, process wastewater related to hull work at facilities shall be any water used on a vessel's hull for any purpose, regardless of application pressure, including the activities of removing marine salts, sediments, marine growth and paint, or other hull, weather deck, or superstructure cleaning activities using water, such as (e.g., preparing those areas for inspection or work (that may include cutting, welding, grinding, or coating), etc.). The discharge water shall be permitted as a process wastewater by a separate VPDES permit.

b. Blasting and painting areas. The permittee shall describe and implement measures to prevent spent abrasives, paint chips, and overspray from discharging into the receiving water or the storm sewer system. The permittee shall contain all blasting or painting activities or use other measures to prevent or minimize the discharge of contaminants (e.g., hanging plastic barriers or tarpaulins during blasting or painting operations to contain debris). Stormwater conveyances shall be regularly cleaned to remove deposits of abrasive blasting debris and paint chips. The SWPPP shall include any standard operating practices with regard to blasting and painting activities, such as (e.g., the prohibition of uncontained blasting or painting over open water, or the prohibition of blasting or painting during windy conditions which can render containment ineffective).

c. Material storage areas. All containerized materials shall be plainly labeled and stored in a protected, secure location away from drains. The permittee shall describe and implement measures to prevent or minimize the contamination of precipitation or surface runoff from the storage areas. The SWPPP shall specify which materials are stored indoors and consider containment or enclosure for materials that are stored outdoors. The permittee shall consider implementing an inventory control plan to limit the presence of potentially hazardous materials on-site. Where abrasive blasting is performed, the SWPPP shall specifically include a discussion on the storage and disposal of spent abrasive materials generated at the facility.

d. Engine maintenance and repair areas. The permittee shall describe and implement measures to prevent or minimize contamination of precipitation or surface runoff from all areas used for engine maintenance and repair. The permittee shall consider the following measures (or their equivalent): performing all maintenance activities indoors, maintaining an organized inventory of materials used in the shop, draining all parts of fluids prior to before disposal, prohibiting the practice of hosing down the shop floor using dry cleanup methods, and treating or recycling stormwater runoff collected from the maintenance area.

e. Material handling areas. The permittee shall describe and implement measures to prevent or minimize 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). The permittee shall consider the following measures (or their equivalents): covering fueling areas; using spill and overflow protection; mixing paints and solvents in a designated area (preferably indoors or under a shed); and minimizing run-on of stormwater to material handling areas.

f. Drydock activities. The SWPPP shall address the routine maintenance and cleaning of the drydock to minimize the potential for pollutants in the stormwater runoff. The SWPPP shall describe the procedures for cleaning the accessible areas of the drydock prior to before flooding and final cleanup after the vessel is removed and the dock is raised. Cleanup procedures for oil, grease, or fuel spills occurring on the drydock shall also be included within the SWPPP. The permittee shall consider the following measures (or their equivalents): sweeping rather than hosing off debris and spent blasting material from the accessible areas of the drydock prior to before flooding; and having absorbent materials and oil containment booms readily available to contain or cleanup any spills.

g. General yard area. The SWPPP shall include a schedule for routine yard maintenance and cleanup. Scrap metal, wood, plastic, miscellaneous trash, paper, glass, industrial scrap, insulation, welding rods, packaging, etc. shall be routinely removed from the general yard area.

(1) Preventative maintenance. As part of the facility's preventive maintenance program, stormwater management devices shall be inspected and maintained in a timely manner (e.g., oil/water separators and sediment traps cleaned to ensure that spent abrasives, paint chips, and solids are intercepted and retained prior to before entering the storm drainage system). Facility equipment and systems shall also be inspected and tested to uncover conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters.

(2) Routine facility inspections. The following areas shall be included in all quarterly inspections: pressure washing area; blasting, sanding, and painting areas; material storage areas; engine maintenance and repair areas; material handling areas; drydock area; and general yard area. The requirement for routine facility inspections is waived for facilities that have maintained an active VEEP E3/E4 status.

(3) Employee training. Training shall 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.

D. Benchmark monitoring and reporting requirements. These facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 240.

Table 240 Sector Q – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Water Transportation Facilities (SIC Codes 4412-4499 except 4499 as specified in Sector N) and Ship and Boat Building or Repairing Yards (SIC Codes 3731 and 3732)
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Zinc	120 μg/L

9VAC25-151-320. Sector Y - Rubber, miscellaneous plastic products, and miscellaneous manufacturing industries.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from rubber and miscellaneous plastic products manufacturing facilities, SIC Codes 3011, 3021, 3052, 3053, 3061, and 3069.

B. SWPPP requirements. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following items:

1. Site description. Summary of potential pollutant sources. Rubber manufacturing facilities shall review the use of zinc at the facility and the possible pathways through which zinc may be discharged in stormwater runoff.

2. Stormwater controls.

a. Controls for rubber manufacturers. Rubber manufacturing facilities shall describe and implement specific controls to minimize the discharge of zinc in stormwater discharges from the facility. Listed below are possible sources of zinc. These shall be reviewed and the accompanying control measures (or their equivalents) shall be documented in the SWPPP. Also, some general control measure options to consider include: using chemicals that are purchased in pre-weighed, sealed polyethylene bags; storing materials that are in use 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.

(1) Zinc bags. All permittees shall review the handling and storage of zinc bags at their facilities. Following are some control measure options: employee training regarding 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- 50-pound to 100-pound sacks.

(2) Dumpsters. The permittee shall minimize discharges of zinc from dumpsters. Following are some control measure options: provide a cover for the dumpster; move the dumpster to an indoor location; or provide a lining for the dumpster.

(3) Dust collectors or baghouses. Permittees shall minimize contributions of zinc to stormwater from dust collectors and baghouses. Improperly operating dust collectors and baghouses shall be replaced or repaired as appropriate.

(4) Grinding operations. Permittees shall 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.

(5) Zinc stearate coating operations. Permittees shall 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.

b. Controls for plastic products manufacturers. Plastic products manufacturing facilities shall describe and implement specific controls to minimize the discharge of plastic resin pellets in stormwater discharges from the facility. The following control measures (or their equivalents) shall be documented in the SWPPP: minimizing spills; cleaning up of spills immediately and thoroughly; sweeping thoroughly; pellet capturing; employee education; and disposal precautions.

C. Benchmark monitoring and reporting requirements. Rubber product manufacturing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 320.

Table 320 Sector Y – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Tires and Inner Tubes; Rubber Footwear; Gaskets, Packing and Sealing Devices; Rubber Hose and Belting; and Fabricated Rubber Products, Not Elsewhere Classified (SIC Codes 3011, 3021, 3052, 3053, 3061, and 3069).
Total Recoverable Zinc	120 µg/L

9VAC25-151-340. Sector AA - Fabricated metal products.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from the following fabricated metals industries, except for electrical related industries: fabricated metal products, except machinery and transportation equipment, SIC Codes 3411-3471, 3479, and 3482-3499; and jewelry, silverware, and plated ware, SIC Codes 3911-3915.

B. Benchmark monitoring and reporting requirements. Metal fabricating facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 340.

Table 340 Sector AA – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Fabricated Metal Products Except Coating (SIC Codes 3411-3471, 3482-3499, 3911-3915)
Total Recoverable Aluminum	750 1,100 µg/L
Total Recoverable Iron	1.0 mg/L
Total Recoverable Zinc	120 µg/L
Total Recoverable Copper	18 13 μg/L
Fabricated Metal Coating and Engraving (SIC Code 3479)
Total Recoverable Zinc	120 µg/L

9VAC25-151-350. Sector AB - Transportation equipment, industrial, or commercial machinery.

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from transportation equipment and industrial or commercial machinery manufacturing facilities commonly described by SIC Codes 3511-3599, except SIC Codes 3571-3579.

B. SWPPP requirements. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following item:

Site description. The site map shall identify where any of the following may be exposed to precipitation or surface runoff: vents and stacks from metal processing and similar operations.

C. Benchmark monitoring and reporting requirements. Transportation equipment manufacturing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 350.

Table 350 Sector AB – Benchmark Monitoring Requirements
Pollutants of Concern	Benchmark Concentration
Transportation equipment manufacturing facilities (SIC Codes 3511-3599 except SIC Codes 3571-3579)
Total Petroleum Hydrocarbons (TPH)*	15.0 mg/L
Total Suspended Solids (TSS)	100 mg/L
Total Recoverable Copper	18 13 μg/L
Total Recoverable Zinc	120 μg/L
*Total Petroleum Hydrocarbons (TPH) is the sum of individual gasoline range organics and diesel range organics (TPH-GRO and TPH-DRO) to be measured by EPA SW 846 Method 8015 for gasoline and diesel range organics, or by EPA SW 846 Methods 8260 Extended and 8270 Extended.

9VAC25-151-370. Sector AD - Nonclassified facilities or stormwater discharges designated by the board department as requiring permits.

A. Discharges covered under this section. Sector AD is used to provide permit coverage for facilities designated by the board department as needing a stormwater permit under the provisions of 9VAC25-31-120 A 1 c or under 9VAC25-31-120 A 7 a (1) or (2) of the VPDES Permit Regulation. Therefore, almost any type of stormwater discharge may be covered under this sector. Permittees shall be assigned to Sector AD by the board department and may not choose Sector AD as the sector describing the facility's activities.

B. Benchmark monitoring and reporting requirements. The board department shall establish any additional monitoring requirements for your a facility prior to before authorizing coverage under this permit.

Part V

Chesapeake Bay Total Maximum Daily Load Compliance

9VAC25-151-400. Chesapeake Bay total maximum daily load compliance.

A. Chesapeake Bay TMDL Compliance. EPA's Chesapeake Bay TMDL (December 29, 2010) includes wasteload allocations for VPDES permitted industrial stormwater facilities as part of the regulated stormwater aggregate load. EPA used data submitted by Virginia with the Phase I Chesapeake Bay TMDL Watershed Implementation Plan, including the number of industrial stormwater permits per county and the number of urban acres regulated by industrial stormwater permits, as part of their development of the aggregate load. Aggregate loads for industrial stormwater facilities were appropriate because actual facility loading data were not available to develop individual facility wasteload allocations.

Virginia estimated the loadings from industrial stormwater facilities using actual and estimated facility acreage information and total phosphorus (TP) and total nitrogen (TN) loading rates from the Northern Virginia Planning District Commission (NVPDC) Guidebook for Screening Urban Nonpoint Pollution Management Strategies (Annandale, VA November 1979), prepared for the Metropolitan Washington Council of Governments. The loading rates used were as follows:

TP - High (80%) imperviousness industrial; 1.5 lb/ac/yr

TN - High (80%) imperviousness industrial; 12.3 lb/ac/yr

Actual facility area information and TP and TN data collected for facilities subject to Part V of this permit will be used by the department to quantify the nutrient and sediment loads from those VPDES permitted industrial stormwater facilities.

1. Facilities that obtained coverage under the 2019 industrial stormwater general permit that demonstrated compliance with the Chesapeake Bay TMDL loading rates.

a. Owners shall maintain documentation of their demonstration of compliance with the Chesapeake Bay TMDL loading rates with the SWPPP and shall continue implementing any BMPs that may have been developed as part of that demonstration. Documentation may include:

(1) Calculations submitted to the department indicating that reductions were not necessary;

(2) A completed TMDL Action Plan, including a description of the means and methods, such as management practices and retrofit programs that were utilized to meet the required reductions;

(3) Other means accepted by the department indicating compliance with the Chesapeake Bay TMDL loading rates.

2. Facilities that obtained coverage under the 2019 industrial stormwater general permit that did not demonstrate compliance with the Chesapeake Bay TMDL loading rates shall submit a demonstration to the department.

a. Owners of facilities that submitted a Chesapeake Bay TMDL action plan during the 2019 industrial stormwater general permit term that did not achieve reductions by the end of the 2019 permit term shall demonstrate that they have achieved their reductions by December 31, 2025. The demonstration shall be submitted to the department no later than January 10, 2026. Documentation of compliance with the Chesapeake Bay TMDL loading rates shall be maintained with the SWPPP.

b. Owners of facilities that completed four samples for each outfall for TN and TP during the 2019 industrial stormwater general permit term that did not submit calculations by the end of the 2019 permit term shall utilize the procedures in Part V D to calculate their facility stormwater loads. The permittee shall submit a copy of the calculations, and a Chesapeake Bay TMDL action plan if required under Part V E, no later than 60 days following coverage under this general permit to the DEQ regional office serving the area where the industrial facility is located on a form provided by the department. Reductions, if applicable, shall be achieved by December 31, 2025, and documentation that the reductions have been achieved shall be submitted to the department no later than January 10, 2026. Documentation of compliance with the Chesapeake Bay TMDL loading rates shall be maintained with the SWPPP.

c. Owners of facilities registered prior to July 1, 2022, that did not complete four samples for each outfall for TN and TP by the end of the 2019 industrial stormwater general permit term shall monitor their discharges for TN and TP to characterize the contributions from their facility's specific industrial sector for these parameters. Total nitrogen is the sum of total Kjeldahl nitrogen (TKN) and nitrite + nitrate and shall be derived from the results of those tests. After the facility is granted coverage under the permit, samples shall be collected during each of the first four quarters of permit coverage. Samples shall be collected and analyzed in accordance with Part V B. Monitoring results shall be reported in accordance with Part V C and Part II C, and retained in accordance with Part II B. Calculations utilizing the procedures in Part V D, and a Chesapeake Bay TMDL action plan if required under Part V E, shall be submitted no later than 60 days following the completion of the fourth quarterly monitoring period to the DEQ regional office serving the area where the industrial facility is located on a form provided by the department. Reductions, if applicable, shall be achieved by December 31, 2025, and documentation that the reductions have been achieved shall be submitted to the department no later than January 10, 2026. Documentation of compliance with the Chesapeake Bay TMDL loading rates shall be maintained with the SWPPP.

Facilities may use the applicable sampling data collected during the 2019 industrial stormwater general permit term to satisfy all or part of the four monitoring periods requirement in accordance with Part V A 2 c.

d. Owners of facilities registered after June 30, 2022, that did not complete four samples for each outfall for TN and TP by the end of the 2019 industrial stormwater general permit term shall monitor their discharges in accordance with Part V A 3.

Facilities may use the applicable sampling data collected during the 2019 industrial stormwater general permit term to satisfy all or part of the four monitoring periods requirements in accordance with Part V A 3.

3. Facilities that obtain initial coverage under the 2024 industrial stormwater general permit, but are not newly constructed facilities as identified in 9VAC25-151-60 C 13.

a. Owners of facilities in the Chesapeake Bay watershed that obtain initial coverage under the 2024 industrial stormwater general permit shall monitor their discharges for TN and TP to characterize the contributions from their facility's specific industrial sector for these parameters. Total nitrogen is the sum of total Kjeldahl nitrogen (TKN) and nitrite + nitrate and shall be derived from the results of those tests. After the facility is granted coverage under the permit, samples shall be collected during each of the first four quarters of permit coverage. Samples shall be collected and analyzed in accordance with Part V B. Monitoring results shall be reported in accordance with Part V C and Part II C, and retained in accordance with Part II B. Calculations utilizing the procedures in Part V D and a Chesapeake Bay TMDL action plan if required under Part V E shall be submitted no later than 60 days following the completion of the fourth quarterly monitoring period to the DEQ regional office serving the area where the industrial facility is located on a form provided by the department. Reductions, if applicable, shall be achieved by two years following the end of the fourth quarterly monitoring period, and documentation that the reductions have been achieved shall be submitted to the department no later than the 10th of the month directly following the two year period. Documentation of compliance with the Chesapeake Bay TMDL loading rates shall be maintained with the SWPPP.

B. Monitoring instructions.

1. Collection and analysis of samples. Sampling requirements shall be assessed on an outfall by outfall basis. Samples shall be collected and analyzed in accordance with the requirements of Part II A.

2. When and how to sample. A minimum of one grab sample shall be taken from the discharge associated with industrial activity resulting from a storm event that results in a discharge from the site providing the interval from the preceding storm event discharge is at least 72 hours. The 72-hour storm interval is waived if the permittee is able to document that less than a 72-hour interval is representative for local storm events during the sampling period. In the case of snowmelt, the monitoring shall be performed at a time when a measurable discharge occurs at the site. For discharges from a stormwater management structure, the monitoring shall be performed at a time when a measurable discharge occurs from the structure.

The grab sample shall be taken during the first 30 minutes of the discharge. If it is not practicable to take the sample during the first 30 minutes, the sample may be taken during the first three hours of the discharge, provided that the permittee explains why a grab sample during the first 30 minutes was impracticable. This information shall be submitted in the department's electronic discharge monitoring report (e-DMR) system and maintained with the SWPPP. If the sampled discharge commingles with process or nonprocess water, the permittee shall attempt to sample the stormwater discharge before it mixes with the nonstormwater.

3. Storm event data. For each monitoring event, except snowmelt monitoring, along with the monitoring results, the permittee shall identify the date of the storm event sampled; rainfall total (in inches) of the storm event that generated the sampled runoff; and the interval between the storm event sampled and the end of the previous storm event discharge. For snowmelt monitoring, the permittee shall identify the date of the sampling event.

4. Monitoring periods. Quarterly monitoring shall be conducted in each of the following three-month periods: January through March, April through June, July through September, and October through December.

5. Documentation explaining a facility's inability to obtain a sample (including dates and times the outfalls were viewed or sampling was attempted), of no rain event, or of deviation from the 72-hour storm interval shall be submitted with the e-DMR and maintained with the SWPPP. Acceptable documentation includes National Climatic Data Center (NCDC) weather station data, local weather station data, facility rainfall logs, and other appropriate supporting data.

6. Representative outfalls may be used in accordance with Part I A 2 f.

C. Reporting monitoring results.

1. Reporting to the department. The permittee shall follow the reporting requirements and deadlines in Table 400-1 if required by Part V A 2 or A 3:

Table 400-1 Monitoring Reporting Requirements
Quarterly Chesapeake Bay TMDL Monitoring	Submit the results by January 10, April 10, July 10, and October 10

2. Permittees shall submit results for each outfall associated with industrial activity according to the requirements of Part II C.

3. Significant digits. The permittee shall report at least the same number of significant digits as a numeric effluent limitation or TMDL wasteload allocation for a given parameter; otherwise, at least two significant digits shall be reported for a given parameter. Regardless of the rounding convention used by the permittee (i.e., five always rounding up or to the nearest even number), the permittee shall use the convention consistently and shall ensure that consulting laboratories employed by the permittee use the same convention.

D. Calculation of facility loads.

1. Permittees required to collect nutrient and sediment data in accordance with Part V A 2 or A 3 shall analyze the data collected to determine if pollution reductions are required. The permittee shall average the data collected at the facility for each of the pollutants of concern (POC) (e.g., TP and TN) and compare the results to the loading rates for TP and TN presented in Part V A.

The following formula may be used to determine the loading rate:

L = 0.226 x P x Pj x (0.05 + (0.9 x Ia)) x C

where:

L = the POC loading rate (lb/acre/year)

P = the annual rainfall (inches/year) - The permittee may use either actual annual average rainfall data for the facility location (in inches/year), the Virginia annual average rainfall of 44.3 inches/year, or another method approved by the department.

Pj = the fraction of annual events that produce runoff - The permittee shall use 0.9 unless the department approves another rate.

Ia = the impervious fraction of the facility impervious area of industrial activity to the facility industrial activity area.

C = the POC average concentration of all facility samples (mg/L) - Facilities with multiple outfalls shall calculate a weighted average concentration for each outfall using the drainage area of each outfall.

For total phosphorus, all daily concentration data below the quantitation level (QL) for the analytical method used shall be treated as half the QL. All daily concentration data equal to or above the QL for the analytical method used shall be treated as it is reported.

For total nitrogen, if none of the daily concentration data for the respective species (i.e., TKN, nitrate, or nitrite) are equal to or above the QL for the respective analytical methods used, the daily TN concentration value reported shall equal one half of the largest QL used for the respective species. If one of the data is equal to or above the QL, the daily TN concentration value shall be treated as that data point is reported. If more than one of the data is above the QL, the daily TN concentration value shall equal the sum of the data points as reported.

Calculations shall be submitted to the department within 60 days from the end of the last monitoring period that satisfies the monitoring requirements in Part V A 2 or A 3. Calculations shall be submitted to the DEQ regional office serving the area where the industrial facility is located, on a form provided by the department, and maintained with the facility's SWPPP.

Alternative calculations may be accepted on a case by case basis by the department to accommodate facilities with outfalls that rarely discharge.

E. Chesapeake Bay TMDL action plan requirements. For permittees required to submit calculations in accordance with Part V D, if the calculated facility loading rate for TP or TN is above the loading rates for TP or TN presented in Part V A, then the permittee shall develop and submit a Chesapeake Bay TMDL action plan to the department.

The Chesapeake Bay TMDL action plan shall be submitted on a form provided by the department to the regional office serving the area where the industrial facility is located within 60 days following the completion of the fourth quarterly monitoring period. A copy of the current Chesapeake Bay TMDL action plan and all facility loading rate calculations shall be maintained with the facility's SWPPP. The Chesapeake Bay TMDL action plan shall include:

1. A determination of the total pollutant load reductions for TP and TN (as appropriate) necessary to reduce the annual loads from industrial activities. This shall be determined by multiplying the industrial average times the difference between the TMDL loading rates listed in Part V A and the actual facility loading rates calculated in accordance with Part V D. The reduction applies to the total difference calculated for each pollutant of concern; and

2. The means and methods, such as management practices and retrofit programs that will be utilized to meet the required reductions determined in Part V E 1 and a schedule to achieve those reductions by the applicable deadline set in Part V A 2 or A 3. Pollutant reductions may be achieved using a combination of the following alternatives:

a. Reductions provided by one or more of the BMPs from the Virginia Stormwater BMP Clearinghouse listed in 9VAC25-870-65, approved BMPs found on the Virginia Stormwater Clearinghouse website, or BMPs approved by the Chesapeake Bay Program. Any BMPs implemented to provide the required pollutant reductions shall be incorporated in the SWPPP and be permanently maintained by the permittee;

b. Implementation of site-specific BMPs followed by a minimum of four stormwater samples collected in accordance with sampling requirements in Part I B 8 a that demonstrate pollutant loadings have been reduced below those calculated under Part I B 8 c. Any BMPs implemented to provide the required pollutant reductions shall be incorporated in the SWPPP and be permanently maintained by the permittee; or

c. Acquisition of nonpoint source credits certified by the board as perpetual in accordance with § 62.1-44.19:20 of the Code of Virginia.