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RULE §334.2Definitions

  (31) Corrosion technician--A person who can demonstrate an understanding of the principles of soil resistivity, stray current, structure-to-soil potential, and component electrical isolation measurements related to corrosion protection and control on buried or submerged metal tanks and metal piping systems; who is qualified by appropriate training and experience to engage in the practice of inspection and testing for corrosion protection and control on such systems, including the inspection and testing of all common types of cathodic protection systems; and who is either:

    (A) certified by NACE International as a corrosion technician, corrosion technologist, or senior corrosion technologist;

    (B) employed under the direct supervision of a corrosion specialist (as defined in this section), where the corrosion specialist maintains responsible control and oversight over all corrosion testing and inspection activities; or

    (C) certified as a cathodic protection tester, in a manner satisfactory to the agency, by either NACE International or the Steel Tank Institute.

  (32) Date installation is complete--The date any regulated substance is initially placed in an underground storage tank or the date any petroleum product is initially placed in an aboveground storage tank.

  (33) Dielectric material--A material that does not conduct direct electrical current, as related to coatings, bushings, and other equipment and materials used with underground storage tank systems.

  (34) Dispenser--Equipment located aboveground that dispenses regulated substances from the underground storage tank system.

  (35) Electrical equipment--Underground equipment which contains dielectric fluid which is necessary for the operation of equipment such as transformers and buried electrical cable.

  (36) Emergency generator--A standby electrical generating system powered by an internal combustion engine (including a turbine), where such system is designed to supply temporary electrical service only when service from the normal or primary electrical source is disrupted. Such systems include, but are not necessarily limited to, those providing emergency electrical service for hospitals, life support systems, and other medical service facilities; telephone and electrical utilities; heating, lighting, ventilation, security, elevator, fire control, and other essential building operations systems; uninterruptible power systems; essential air conditioning and refrigeration; and motors, machinery, and controls used for other essential or critical purposes.

  (37) Excavation zone--The space containing the underground storage tank (UST) system and backfill material, which is bounded by the ground surface and the walls and floor of the pit and trenches into which the UST system is placed at the time of installation.

  (38) Existing underground storage tank (UST) system--A UST system which is used or designed to contain an accumulation of regulated substances for which installation either had commenced prior to December 22, 1988, or had been completed on or prior to December 22, 1988. Installation will be considered to have commenced if the owner or operator had obtained all federal, state, and local approvals or permits necessary to begin physical construction at the site or installation of the tank system, and if either a continuous on-site physical construction or installation program had begun or the owner or operator had entered into contractual obligations (which could not be canceled or modified without substantial loss) which required that the physical construction at the site or installation of the tank system was to be completed within a reasonable time.

  (39) External release detection--A method of release detection which includes equipment or procedures designed to effectively monitor or measure for the presence of regulated substances in the excavation zone, soil, or other media outside of a single-wall or double-wall underground storage tank system.

  (40) Facility--The site, tract, or other defined area where one or more underground storage tank systems or one or more aboveground storage tank systems are located.

  (41) Farm--A tract or tracts of land (including all associated structures and improvements) which are principally devoted to the raising of agricultural or other types of crops, domestic or other types of animals, or fish for the production of food, fiber, or other products or for other useful purposes, including fish hatcheries, rangeland, and plant nurseries with growing operations, but not including timber-growing land and operations dedicated primarily to recreational, aesthetic, or other non-agricultural activities (e.g., golf courses and parks).

  (42) Farm tank--A tank located on a farm where the stored regulated substance is or will be utilized directly in the farm activities.

  (43) Field-constructed tank--A tank constructed in the field. For example, a tank constructed of concrete that is poured in the field or a steel or fiberglass tank primarily fabricated in the field is considered field-constructed.

  (44) Flow-through process tank--A tank through which regulated substances flow in a steady, variable, recurring, or intermittent manner during, and as an integral part of, a production process (such as petroleum refining, chemical production, and industrial manufacturing), but specifically excluding any tank used for the static storage of regulated substances prior to their introduction into the production process and any tank used for the static storage of regulated substances which are products or by-products of the production process.

  (45) Free product (or non-aqueous phase liquid)--A regulated substance in its free-flowing non-aqueous liquid phase at standard conditions of temperature and pressure (i.e., that portion of the product not dissolved in water or adhering to soil).

  (46) Gathering lines--Any pipeline, equipment, facility, or building used in the transportation of oil or gas during oil or gas production or gathering operation.

  (47) Hazardous substance--Any substance defined or listed in the federal Comprehensive Environmental Response, Compensation, and Liability Act of 1980, §101(14) (42 United States Code (USC), §§9601, et seq.), and which is not regulated as a hazardous waste under the federal Solid Waste Disposal Act, Subtitle C (42 USC, §§6921, et seq.).

  (48) Hazardous substance underground storage tank (UST) system--A UST system that contains an accumulation of either a hazardous substance, a mixture of two or more hazardous substances, or a mixture of one or more petroleum substances with one or more hazardous substances, and which does not meet the definition of a petroleum UST system in this section.

  (49) Heating oil--A petroleum substance which is typically used in the operation of heating, boiler, or furnace equipment and which either is one of the following seven technical grades of fuel oil: Number 1, Number 2, Number 4-light, Number 4-heavy, Number 5-light, Number 5-heavy, and Number 6; is a residual fuel oil derivative of the refining process (such as Navy Special and Bunker C residual fuel oils); or is another fuel (such as kerosene or diesel) used for heating purposes as a substitute for one of the fuel oils or residual fuel oil derivatives listed in this paragraph.

  (50) Hydraulic fluid--Any regulated substance that is normally used in a hydraulic lift system.

  (51) Hydraulic lift tank--A tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air and hydraulic fluid to operate lifts, elevators, or other similar devices.

  (52) Impressed current system--A method of cathodic protection where a rectifier is used to convert alternating current to direct current, where the current then flows in a controlled electrically connected circuit to non-sacrificial anodes, then through the surrounding soil or backfill to the protected metallic structure or component, and back to the rectifier.

  (53) In operation--The description of an in-service underground storage tank which is currently being used on a regular basis for its intended purpose.

  (54) In service--The status of an underground storage tank (UST) beginning at the time that regulated substances are first placed into the tank and continuing until the tank is permanently removed from service by means of either removal from the ground, abandonment in-place, or change-in-service. An in-service UST may or may not contain regulated substances, and may be either in operation or out of operation at any specific time.

  (55) Installer--A person who participates in or supervises the installation, repair, or removal of underground storage tanks.

  (56) Inventory control--Techniques used to identify a loss of product that are based on volumetric measurements in the tank and reconciliation of those measurements with product delivery and withdrawal records.


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