Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 580 - UNDERGROUND STORAGE TANKS: TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS › Part I - Definitions, Applicability, and Installation Requirements for Partially Excluded UST Systems › Section 9VAC25-580-10 - Definitions

Current through Register Vol. 40, No. 24, July 15, 2024
The following words and terms when used in this chapter
					 shall have the following meanings unless the context clearly indicates
					 otherwise:
"Aboveground release" means any release to the surface of
					 the land or to surface water. This includes releases from the aboveground
					 portion of a UST system and aboveground releases associated with overfills and
					 transfer operations as the regulated substance moves to or from a UST
					 system.
"Airport hydrant fuel distribution system" or "airport
					 hydrant system" means an UST system that fuels aircraft and operates under high
					 pressure with large diameter piping that typically terminates into one or more
					 hydrants (fill stands). The airport hydrant system begins where fuel enters one
					 or more tanks from an external source such as a pipeline, barge, rail car, or
					 other motor fuel carrier.
"Ancillary equipment" means any devices including such
					 devices as piping, fittings, flanges, valves, and pumps used to distribute,
					 meter, or control the flow of regulated substances to and from an UST.
"Belowground release" means any release to the subsurface
					 of the land and to groundwater. This includes releases from the belowground
					 portions of an underground storage tank system and belowground releases
					 associated with overfills and transfer operations as the regulated substance
					 moves to or from an underground storage tank.
"Beneath the surface of the ground" means beneath the
					 ground surface or otherwise covered with earthen materials.
"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.
"Building official" means the executive official of the
					 local government building department empowered by § 36-105 of the Code of
					 Virginia to enforce and administer the Virginia Uniform Statewide Building Code
					 (USBC) (§ 36-97 et seq. of the Code of Virginia).
"Cathodic protection" is a technique to prevent corrosion
					 of a metal surface by making that surface the cathode of an electrochemical
					 cell. For example, a tank system can be cathodically protected through the
					 application of either galvanic anodes or impressed current.
"Cathodic protection tester" means a person who can
					 demonstrate an understanding of the principles and measurements of all common
					 types of cathodic protection systems as applied to buried or submerged metal
					 piping and tank systems. At a minimum, such persons must have education and
					 experience in soil resistivity, stray current, structure-to-soil potential, and
					 component electrical isolation measurements of buried metal piping and tank
					 systems.
"CERCLA" means the Comprehensive Environmental Response,
					 Compensation, and Liability Act of 1980, as amended (42 USC §
											9601 et seq.).
"Compatible" means the ability of two or more substances to
					 maintain their respective physical and chemical properties upon contact with
					 one another for the design life of the tank system under conditions likely to
					 be encountered in the UST.
"Connected piping" means all underground piping including
					 valves, elbows, joints, flanges, and flexible connectors attached to a tank
					 system through which regulated substances flow. For the purpose of determining
					 how much piping is connected to any individual UST system, the piping that
					 joins two UST systems should be allocated equally between them.
"Containment sump" means a liquid-tight container that
					 protects the environment by containing leaks and spills of regulated substances
					 from piping, dispensers, pumps, and related components in the containment area.
					 Containment sumps may be single walled or secondarily contained and located at
					 the top of the tank (tank top or submersible turbine pump sump), underneath the
					 dispenser (under-dispenser containment sump), or at other points in the piping
					 run (transition or intermediate sump).
"Corrosion expert" means a person who, by reason of
					 thorough knowledge of the physical sciences and the principles of engineering
					 and mathematics acquired by a professional education and related practical
					 experience, is qualified to engage in the practice of corrosion control on
					 buried or submerged metal piping systems and metal tanks. Such a person must be
					 accredited or certified as being qualified by the National Association of
					 Corrosion Engineers or be a registered professional engineer who has
					 certification or licensing that includes education and experience in corrosion
					 control of buried or submerged metal piping systems and metal tanks.
"De minimis" means trivial and beyond the intent of
					 regulation, as that term is used at 53 FR 37108-37109.
"Delivery prohibition" is prohibiting the delivery,
					 deposit, or acceptance of product to an underground storage tank system that
					 has been determined to be ineligible by the department for such delivery,
					 deposit, or acceptance.
"Delivery prohibition tag" means a tag, device, or
					 mechanism on the tank's fill pipes that clearly identifies an underground
					 storage tank system as ineligible for product delivery. The tag or device is
					 easily visible to the product deliverer and clearly states and conveys that it
					 is unlawful to deliver to, deposit into, or accept product into the ineligible
					 underground storage tank system. The tag, device, or mechanism is generally
					 tamper resistant.
"Department" means the Department of Environmental
					 Quality.
"Dielectric material" means a material that does not
					 conduct direct electrical current. Dielectric coatings are used to electrically
					 isolate UST systems from the surrounding soils. Dielectric bushings are used to
					 electrically isolate portions of the UST system (e.g., tank from
					 piping).
"Director" means the director of the Department of
					 Environmental Quality.
"Dispenser" means equipment located aboveground that
					 dispenses regulated substances from the UST system.
"Dispenser system" means the dispenser and the equipment
					 necessary to connect the dispenser to the underground storage tank
					 system.
"Electrical equipment" means underground equipment that
					 contains dielectric fluid that is necessary for the operation of equipment such
					 as transformers and buried electrical cable.
"Excavation zone" means the volume containing the tank
					 system and backfill material bounded by the ground surface, walls, and floor of
					 the pit and trenches into which the UST system is placed at the time of
					 installation.
"Existing tank system" means a tank system used to contain
					 an accumulation of regulated substances or for which installation has commenced
					 on or before December 22, 1988. Installation is considered to have commenced
					 if:
1. The owner or operator has
				  obtained all federal, state, and local approvals or permits necessary to begin
				  physical construction of the site or installation of the tank system; and
				  if
2.
a.
Either a continuous onsite physical construction or
					 installation program has begun; or
b. The owner or operator has entered into
				  contractual obligations, which cannot be canceled or modified without
				  substantial loss, for physical construction at the site or installation of the
				  tank system to be completed within a reasonable time.