Connecticut Administrative Code › Title 22a - Environmental Protection › 174 - Abatement of Air Pollution › Section 22a-174-20 - Control of organic compound emissions

Current through July 10, 2024
(a)
Storage of
			 volatile organic compounds and restrictions for the Reid vapor pressure of
			 gasoline.
(1) Definitions. For the
			 purposes of this subsection and subsections (b) and (c) of this section:
(A) "Aboveground" means located on or above
			 the surface of the ground, partially buried, bunkered or located in a
			 subterranean vault;
(B) "Approved
			 control system" means, a vapor balance system or a vapor recovery
			 system;
(C) "Degassing" means the
			 process of removing organic vapors from a storage tank in preparation for human
			 entry;
(D) "Delivery vehicle" means
			 a tank truck, tank-equipped trailer, railroad tank car, or other mobile source
			 equipped with a storage tank used for the transportation of gasoline from
			 sources of supply to any stationary storage tank;
(E) "Dispensing facility" means any site
			 where gasoline is delivered to motor vehicles other than agricultural vehicles
			 from any stationary storage tank with a capacity of 250 gallons or
			 more;
(F) "Floating roof" means a
			 movable roof in a storage vessel consisting of a floating deck resting on the
			 surface of the liquid contents, a continuous seal supported against the inner
			 surface of the tank shell, and an envelope closing the gap between the floating
			 deck and the seal. The entire deck, seal and envelope combination is free to
			 rise and fall with the surface of the liquid during filling and emptying of the
			 storage vessel;
(G) "Gasoline"
			 means any petroleum distillate or petroleum distillate and alcohol blend
			 commercially known or sold as "gasoline" and commonly used as an internal
			 combustion engine fuel;
(H)
			 "Gasoline storage tank farm" means a premises with any individual gasoline
			 storage tank with a capacity equal to or greater than forty thousand (40,000)
			 gallons;
(I) "Leak-free" means a
			 condition that exists when the reading on a portable hydrocarbon analyzer is
			 less than 500 ppm, expressed as methane, above background, measured using EPA
			 Method 21, as identified in 40 CFR Part 60, Appendix A, Determination of
			 Volatile Organic Compounds Leaks;
(J) "Loading facility" means any combination
			 of equipment located on a premises and used to load or unload any VOC with a
			 vapor pressure of 0.75 pounds per square inch or greater under standard
			 conditions;
(K) "Reid vapor
			 pressure" or "RVP" means the vapor pressure of a liquid in pounds per square
			 inch absolute at one hundred (100) degrees fahrenheit as determined by American
			 Society for Testing and Materials method D5191-07 "Standard Test Method for
			 Vapor Pressure of Petroleum Products (Mini Method);"
(L) "Roof landing" means the reduction of the
			 liquid level in a floating roof tank so that the floating roof is no longer
			 floating on the surface of the stored liquid but is resting on its legs or is
			 supported from above by cables or hangers;
(M) "Storage tank" means any tank, reservoir
			 or vessel that is a container for liquids or gases, wherein:
(i) No manufacturing process, or part
			 thereof, other than filling or emptying takes place, and
(ii) The only treatment carried out is
			 treatment necessary to prevent change from occurring in the physical condition
			 or chemical properties of the liquids or gases deposited into the container.
			 Such treatment may include, but is not limited to, recirculating, agitating,
			 maintaining the temperature of the stored liquids or gases, replacing air in
			 the vapor space above the stored liquids or gases with an inert gas to inhibit
			 the occurrence of a chemical reaction or adding a biocide to prevent microbial
			 growth;
(N) "Throughput"
			 means the number of gallons delivered through all equipment at a dispensing
			 facility or a loading facility over a specified time interval;
(O) "Underground" means "underground" as
			 defined in section
			 22a-449(d)
			 -1(a)(2) of the Regulations of Connecticut State Agencies;
(P) "Vapor balance system" means a
			 combination of pipes or hoses that creates a closed connection between the
			 vapor spaces of an unloading tank and receiving tank such that vapors displaced
			 from the receiving tank are transferred to the tank being unloaded and for
			 which the vapor space connections on the unloading tank, the receiving tank and
			 the pipes or hoses used are equipped with fittings that are vapor-tight and
			 will automatically and immediately close upon disconnection so as to prevent
			 the release of vapors;
(Q) "Vapor
			 recovery system" means a device or system that collects vapors to prevent
			 release into the atmosphere. Collected vapors are recovered for use or
			 destroyed; and
(R) "Vapor-tight"
			 means not capable of allowing the passage of gases at the pressures
			 encountered.