Washington Hazardous Waste Tanks regulations & environmental compliance analysis

Washington Hazardous Waste Tanks: What you need to know

Governing Law and Regulations

Dangerous waste storage and treatment tank rules: Washington Administrative Code (WAC) 173-303-640; WAC 173-303-400(3)(a) and 173-303-400(3)(c)(ix) (interim status)

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Marking requirements: WAC 173-303-395(6)

Federal organic air emissions rules: WAC 173-303-690 to WAC 173-303-691, and 40 CFR 264 Subpart CC

Marking tanks: WAC 173-303-640(5)(d) and WAC 173-303-395(6)

Location standards: WAC 173-303-282

Tank integrity assessments: WAC 173-303-640(2)(e) and WAC 173-303-640(3)(b)

Air emissions: WAC 173-303-640(5)(e)

Regulatory Agency

Washington Department of Ecology (WDOE) Hazardous Waste and Toxics Reduction Program

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Comparison: State vs. Federal

Rules. Washington's tank rules include both federal and more stringent state requirements. The state's more stringent requirements cover:

—Marking tanks

—Location standards

—Tank integrity assessments

—Air emissions

Administration and enforcement. WDOE's Hazardous Waste and Toxics Reduction Program administers and enforces the dangerous waste tank requirements in Washington.

State Requirements


WAC 173-303-640(5)(d) and WAC 173-303-395(6)

In Washington, dangerous waste tanks must be marked with labels or signs in order to adequately identify for employees, emergency response personnel, and the public both the waste itself and the major risks associated with the waste contained in the tank (WAC 173-303-640(5)(d)). The label or sign must be readable from a distance of 50 feet. In addition, labels must not be obscured, removed, or otherwise unreadable in the course of an inspection (WAC 173-303-395(6)).


WAC 173-303-282

Dangerous waste storage tanks have to be placed at least ...

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More on this topic:

Governing Law and Regulations
Regulatory Agency
Comparison: State vs. Federal
State Requirements