Washington Hazardous Waste Generators regulations & environmental compliance analysis

Washington Hazardous Waste Generators: What you need to know

Governing Law and Regulations

Wastes and generator status:

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Hazardous/dangerous waste identification (ID): Washington Administrative Code (WAC) 173-303-070 to 173-303-100 and WAC 173-303-170

Generator status and classification: WAC 173-303-070, WAC 173-303-600(3)(f), WAC 173-303-160(2)(b), and WAC 173-303-169

Large quantity generator (LQG) standards: WAC 173-303-060, WAC 173-303-170 to 173-303-230

Medium quantity generator (MQG) standards: WAC 173-303-060, WAC 173-303-170 to 173-303-190, and WAC 173-303-210 to 173-303-230

LQG and MQG requirements:

Notification and ID numbers: WAC 173-303-060

Records: WAC 173-303-210, WAC 173-303-060(5), WAC 173-303-180, and WAC 173-303-220

On-site storage: WAC 173-303-172, WAC 173-303-174, and WAC 173-303-200

On-site treatment: WAC 173-303-170(2)(b)(iv)

Pollution prevention: WAC 173-307-015

Small quantity generator (SQG) responsibilities:

Maintaining small quantity generator (SQG) status: WAC 173-303-171

Acceptable treatment, storage, and disposal facilities (TSDFs): WAC 173-303-141


Annual hazardous waste generation fee: WAC 173-305-110

Hazardous waste planning fee: WAC 173-305-210 to 173-305-230

Regulatory Agency

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

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Washington adopts the U.S. Environmental Protection Agency's (EPA) Hazardous Waste Generator Improvements Rule, effective in Washington as of April 30, 2019. Washington has additional standards that make the state rules more stringent than the federal rules. The state’s more stringent rules apply to hazardous/dangerous waste identification, generator status, notification, records, annual reports, ...

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