(1) The owner or operator of a Class 1 facility with an out of service storage tank or transfer pipeline must continue to monitor, inspect, and maintain the storage tank or transfer pipeline as if it were in service, as described in (a) of this subsection, or they must decommission the storage tank or transfer pipeline, as described in (b) of this subsection.

(a) Owners or operators continuing to monitor, inspect, maintain, and repair a storage tank or transfer pipeline as if it were in service must:

(i) Meet the requirements of the facility's operations manual and prevention plan;

(ii) Conduct inspections, including required API Standard inspections in WAC 173-180-330 and 173-180-340;

(iii) Conduct testing as required by WAC 173-180-205;

(iv) Maintain corrosion protection systems; and

(v) Operate cathodic protection systems.

(b) Owners or operators decommissioning a storage tank or transfer pipeline must meet the following requirements:

(i) All oil transfer pipelines must be completely oil-free, certified as gas-free, and blanked at both ends;

(ii) All marine transfer hoses must be completely oil-free, certified as gas-free, and physically removed from the dock;

(iii) Storage tanks must be completely oil-free, certified as gas-free, and disconnected from all associated piping as well as instrumentation and control lines. Piping and instrumentation and control line connections must be blanked;

(iv) All oil piping connected to the storage tank must be air-gapped from the storage tank; and

(v) All electrical devices connected to the transfer pipeline or storage tank (e.g., pumps, mixers, heaters) must be de-energized.

(c) Storage tanks and transfer pipelines that have been placed in caretaker status as defined in 33 C.F.R. Part 154 or that have been permanently closed as defined in 40 C.F.R. Part 112, will be considered decommissioned. The owner or operator of a Class 1 facility in caretaker status or that permanently closes a storage tank must notify ecology as described in subsection (3) of this section.

(2) All storage tanks and transfer pipelines returning to service must meet the requirements of this chapter.

(3) The owner or operator must submit an electronic notification to ecology 30 calendar days prior to decommissioning and returning to service. The notification must include the actions taken to decommission and return equipment to service.

(4) Any change that results from decommissioning or returning equipment to service that meets the definition of a significant change, in WAC 173-180-435 or 173-180-670, must be documented in the facility's operations manual and/or prevention plan, as applicable.