Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 151 - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM (VPDES) GENERAL PERMIT REGULATION FOR DISCHARGES OF STORMWATER ASSOCIATED WITH INDUSTRIAL ACTIVITY › Part IV - Sector Specific Permit Requirements › Section 9VAC25-151-190 - Sector L - Landfills, land application sites and open dumps

Current through Register Vol. 40, No. 24, July 15, 2024
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 (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 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 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.) 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 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. 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 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 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 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.