Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 193 - Virginia Pollutant Discharge Elimination System (VPDES) General Permit for Concrete Products Facilities › Section 9VAC25-193-10 - Definitions

Current through Register Vol. 40, No. 24, July 15, 2024
The words and terms used in this chapter shall have the
				  meanings defined in § 62.1-44.2 et seq. of the Code of Virginia (State
				  Water Control Law) and 9VAC25-31 (VPDES Permit Regulation), unless the context
				  clearly indicates otherwise, except that for the purposes of this
				  chapter:
"Best management practices" or "BMPs" means schedules of
				  activities, practices and prohibitions of practices, structures, vegetation,
				  maintenance procedures, and other management practices to prevent or reduce the
				  discharge of pollutants to surface waters. BMPs also include treatment
				  requirements, operating procedures, and practices to control plant site runoff,
				  spillage or leaks, sludge or waste disposal, or drainage from raw material
				  storage.
"Board" means the 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.
"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.
"Industrial activity" means facilities or those portions of a
				  facility where the primary purpose is classified as:
1. North American Industry Classification
				System (NAICS) Code 327331 - Concrete Block and Brick Manufacturing, (Executive
				Office of the President, Office of Management and Budget, United States, 2017)
				and Standard Industrial Classification (SIC) Code 3271 - Concrete Block and
				Brick (Office of Management and Budget (OMB) SIC Manual, 1987);
2. NAICS Code 327332 Concrete Pipe
				Manufacturing, NAICS Code 327390 Other Concrete Product Manufacturing, NAICS
				Code 327999 All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
				(dry mix concrete manufacturing only) and SIC Code 3272 - Concrete Products,
				Except Block and Brick; or
3. NAICS
				Code 327320 Ready-Mix Concrete Manufacturing and SIC Code 3273 - Ready-Mixed
				Concrete, including both permanent and portable plants.
These facilities are collectively defined as "Concrete
				  Products Facilities."
"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.
"No discharge system" means process, commingled, or
				  stormwater systems designed to operate so that there is no discharge of
				  wastewater or pollutants, except in storm events greater than a 25-year,
				  24-hour storm event.
"Runoff coefficient" means the fraction of total rainfall
				  that will appear at the conveyance as runoff.
"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
				  the Comprehensive Environmental Response, Compensation and Liability Act
				  (CERCLA) (42 USC §
										9601 et seq.) (see
				  40 CFR
				  302.4).
"Total maximum daily load" or "TMDL" means a calculation of
				  the maximum amount of a pollutant that a water body 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, or both, and must include a margin of safety (MOS) and account for
				  seasonal variations.
"25-year, 24-hour storm event" means the maximum 24-hour
				  precipitation event with a probable recurrence interval of once in 25 years as
				  established by the National Weather Service or appropriate regional or state
				  rainfall probability information.
"Vehicle or equipment degreasing" means the washing or steam
				  cleaning of engines or other drive components of a vehicle or piece of
				  equipment in which the purpose is to degrease and clean petroleum products from
				  the equipment for maintenance purposes. Removing sediment and concrete residue
				  is not considered vehicle or equipment degreasing.
"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.
Statutory Authority: § 62.1-44.15 of the Code of
					 Virginia, 40 CFR, §
												42 of the Clean Water Act, Parts 122, 123,
					 and 124.