173-490-201  <<  173-490-202 >>   173-490-204

WAC 173-490-202

Leaks from gasoline transport tanks and vapor collection systems.

(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. 178.340-10b 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).
(3) Testing and monitoring.
(a) The owner(s) or operator(s) of a gasoline transport tank or vapor collection system shall, at his own expense, demonstrate compliance with WAC 173-490-202 (2)(a) and (b), respectively. All tests shall be made by, or under the direction of, a person qualified to perform the tests.
(b) The owner(s) or operator(s) of a gasoline transport tank shall notify ecology in writing of the date and location of a certification test at least ten calendar days before the anticipated test date.
(c) To demonstrate compliance with this chapter, refer to WAC 173-400-105.
(d) Monitoring to confirm the continuing existence of leak tight conditions shall be consistent with the procedures on file with and approved by ecology.
(4) Recordkeeping.
(a) The owner(s) or operator(s) of a gasoline transport tank or vapor collection system shall maintain records of all certification tests and repairs for at least two years after the test or repair is completed.
(b) The records of certification tests required by WAC 173-490-202 (4)(a) shall, as a minimum, contain:
(i) The transport tank identification number;
(ii) The initial test pressure and the time of the reading;
(iii) The final test pressure and the time of the reading;
(iv) The initial test vacuum and the time of the reading;
(v) The final test vacuum and the time of the reading;
(vi) At the top of each report page, the company name, date and location of the tests on that page; and
(vii) Name and title of the person conducting the test.
(c) The owner(s) or operator(s) of a gasoline transport tank shall annually certify that the transport tank passed the required tests.
(d) Copies of all records required under WAC 173-490-202 shall immediately be made available to ecology, upon written request, at any reasonable time.
[Statutory Authority: Chapter 70.94 RCW. WSR 91-05-064 (Order 90-06), § 173-490-202, filed 2/19/91, effective 3/22/91. Statutory Authority: RCW 70.94.331 and 70.94.395. WSR 80-11-062 (Order DE 80-18), § 173-490-202, filed 8/20/80.]
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