Owners and operators of UST systems with overfill prevention equipment must comply with the requirements of this section to ensure the equipment is operating properly and will prevent releases to the environment.

(1) Inspections. Overfill prevention equipment must be inspected to verify functionality at least once every three years. At a minimum, the inspection must ensure that the equipment is set to activate at the applicable level specified in WAC 173-360A-0310(8) and will activate when regulated substances reach that level. Inspections must be performed:

(a) By or under the direct supervision of a service provider certified in accordance with Part 9 of this chapter; and

(b) In accordance with the manufacturer's instructions or a code of practice. The following code of practice may be used to meet this requirement: Petroleum Equipment Institute, Recommended Practice 1200, "Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities."

(2) Repairs. Overfill prevention equipment that is not operating properly must be repaired in accordance with WAC 173-360A-0490 or replaced in accordance with WAC 173-360A-0300. Flow restrictors used in vent lines that are not operating properly must be replaced with another type of overfill prevention equipment (WAC 173-360A-0310 (8)(c)).

(3) Reporting. Overfill prevention equipment inspections must be reported to the department within thirty days using the applicable checklist provided by the department. The checklist must be completed by the service provider.

(4) Recordkeeping. Records of overfill prevention equipment inspections must be maintained for at least six years.

(5) Compliance dates. The inspections of overfill prevention equipment required under this section must begin by the following dates:

(a) For UST systems installed after October 1, 2018, upon installation; and

(b) For UST systems installed on or before October 1, 2018:

(i) If the UST facility has an even facility compliance tag identification number, by October 1, 2020; and

(ii) If the UST facility has an odd facility compliance tag identification number or does not have a facility compliance tag, by October 1, 2021.