Washington Underground Storage Tanks regulations & environmental compliance analysis

Washington Underground Storage Tanks: What you need to know

Governing Law and Regulations

Washington Underground Storage Tanks (UST) Act, Revised Code of Washington (RCW) 90.76, and regulations at Washington Administrative Code (WAC) 173-360A

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Washington Petroleum UST Act, RCW 70.148

Applicability: WAC 173-360A-0110

Notification: WAC 173-360A-0230

Intent to install: WAC 173-360A-0300(1)

Compatibility: WAC 173-360A-0410

UST licensing: WAC 173-360A-0200

Annual tank fee: RCW 90.76.090 and WAC 173-360A-0210

Secondary containment: WAC 173-360A-0310

Operation and maintenance: WAC 173-360A-0400 to 173-360A-0490

Delivery prohibition: RCW 90.76.050, WAC 173-360A-0220, and WAC 173-360A-0280

UST service providers: WAC 173-360A-0900 to 173-360A-0940

Operator training: RCW 90.76.020 and WAC 173-360A-0500 to 173-360A-0560

Operation and maintenance plans: WAC 173-360A-0545

Emergency response requirements: WAC 173-360A-0550

Recordkeeping: WAC 173-360A-0560

Spill reporting: WAC 173-360A-0700 to 173-360A-0750

Closure: WAC 173-360A-0800 to 173-360A-0830

Financial responsibility: WAC 173-360A-1000 to 173-360A-1097

Enforcement: WAC 173-360A-0270 and WAC 173-360A-0290

Recordkeeping: WAC 173-360A-0240

Regulatory Agencies

Washington Department of Ecology (WDOE) Toxics Cleanup Program UST Section

Washington Department of Revenue Business Licensing Service (BLS)

Washington Pollution Liability Insurance Agency (PLIA) Commercial UST Reinsurance Program

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Washington State has a federally approved state underground storage tank (UST) program. This means that state law, not federal law, applies to UST systems in this state. Washington's UST rules include the federal standards and several state rules. The state follows the ...

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