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Public comments are accepted over a 30-, 45-, or 60-day period. During that time, you can share your input with us about specific changes in the permits we regulate. We review all comments and then ...

Washington’s clean energy transition is facing a setback if a provision in the solar panel stewardship and takeback program goes into effect on July 1, 2025. This law requires Washington’s solar panel ...

Looking for a service provider? Here is a excel spreadsheet that lists certified UST service providers.This list is updated quarterly. Disclaimer: We do not assume any liability for the accuracy or ...

We work to reduce diesel pollution. Diesel exhaust puts healthy people at risk for asthma and respiratory illnesses. For other people, it can make their existing heart and lung diseases worse. Diesel ...

SEPA guidance for determining lead agency and evaluating the proposal. Under the State Environmental Policy Act (SEPA), most new proposals are reviewed by a designated “lead agency.” While this is ...

For health care facilities in Washington, most pharmaceutical wastes designate as dangerous waste. Waste designation is the responsibility of the generating facility. We cannot designate generator ...

Anaerobic digestion is the process through which organic materials break down in the absence of oxygen. Composting is the break down of the material with oxygen. Anaerobic digestion produces gas - ...

Reducing and recycling organic wastes are key goals of Washington's State Solid and Hazardous Waste Plan. Organic materials are valuable resources — from food and yard waste, to biosolids, to ...

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Under RCW 42.56.120(2), we are allowed to recover costs directly related to the copying of public records. We cannot charge a fee for inspection of records, or staff time spent on locating records or ...

Waste tires are those no longer suitable for their intended purpose due to wear or damage. Accumulations of waste tires harbor mosquitos, snakes, and other vermin, which pose health risks, such as the ...