Washington Administrative Code › Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508) › Chapter 173-490 - Emission standards and controls for sources emitting volatile organic compounds (VOC) › Section 173-490-202 - Leaks from gasoline transport tanks and vapor collection systems

Current through Register Vol. 24-14, July 15, 2024
(1) Specific
			 applicability.
This section shall apply to all gasoline transport tanks
				equipped for gasoline vapor collection and all vapor collection systems at
				gasoline loading terminals, bulk gasoline plants and gasoline dispensing
				facilities as qualified in WAC
				173-490-025 and
				173-490-040.
(2) Provisions for specific processes.
(a) The owner(s) or operator(s) of a gasoline
			 loading or unloading facility shall only allow the transfer of gasoline between
			 the facility and a transport tank when a current leak test certification for
			 the transport tank is on file with the facility or a valid inspection sticker
			 is displayed on the vehicle.
(b)
			 The owner(s) or operator(s) of a transport tank shall not make any connection
			 to the tank for the purpose of loading or unloading gasoline, except in the
			 case of an emergency, unless the gasoline transport tank:
(i) Is tested annually according to the test
			 procedure referenced in WAC
			 173-490-202(3)(c);
(ii) Sustains a pressure change of no more
			 than 0.75 kilopascals (3 inches of water) in five minutes when pressurized to a
			 gauge pressure of 4.5 kilopascals (18 inches of water) or evacuated to a gauge
			 pressure of 1.5 kilopascals (6 inches of water) during the testing required in
			 WAC 173-490-202(2)(b)(i);
(iii) Is repaired by the owner(s) or
			 operator(s) and retested within fifteen days of testing if it does not meet the
			 criteria of WAC
			 173-490-202(2)(b)(ii);
(c) The owner(s) or operator(s) of
			 a transport tank shall:
(i) Have a current
			 leak test certification for the transport tank on file with each gasoline
			 loading or unloading facility where gasoline is transferred; or
(ii) Display a sticker near the department of
			 transportation certification plate required by  49 C.F.R. 178.340-10  b which:
(A) Shows the date that the gasoline tank
			 truck last passed the test required in WAC
			 173-490-202(2)(b)(i) and
			 (ii);
(B) Shows the identification number of the
			 gasoline tank truck tank; and
(C)
			 Expires not more than one year from the date of the leak tight test.
(d) The owner(s) or
			 operator(s) of a vapor collection system shall:
(i) Operate the vapor collection system and
			 the gasoline loading equipment during all loadings and unloadings of transport
			 tanks equipped for emission control such that:
(A) A gauge reading of tank pressure will not
			 exceed 4.5 kilopascals (18 inches of water) or vacuum 1.5 kilopascals (6 inches
			 of water);
(B) The concentration of
			 gasoline vapors is below the lower explosive limit (LEL, measured as propane)
			 at all points a distance of 2.5 cm (1 inch) from potential leak sources when
			 measured by the method in WAC
			 173-490-202(3);
			 and
(C) There are no visible liquid
			 leaks.
(ii) Repair and
			 retest a vapor collection system that exceeds the limits of WAC
			 173-490-202(2)(d)(i) within fifteen days.
(e)
			 Ecology may, at any time, monitor a gasoline transport tank and vapor
			 collection system during loading or unloading operations by the procedure in
			 WAC 173-490-202(3)(d) to confirm continuing compliance with WAC
			 173-490-202(2)(b) or
			 (d).