Cleanup Levels and Risk Calculation (CLARC) is a compendium of technical information related to calculating cleanup levels under Washington's Cleanup Rule, the Model Toxics Control Act (MTCA) ...

Ecology has a role in protecting water quality at forestry sites, and our analysis of the draft Forest Practices Board rule ...

This tool can help you locate any of these sites within Washington state either in our database, or you can search visually on our interactive mapping tool. For help understanding the codes and terms ...

To request ADA accommodation, contact Ecology's ADA Coordinator by email at [email protected], or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility ...

The Weldcraft Steel & Marine site is one of 12 Bellingham Bay cleanup sites coordinated through the Bellingham Bay Action ...

Join the walking tour to learn about this cleanup site on the Bellingham Bay waterfront. Ecology is currently asking for public comments on a draft cleanup action plan, agreed order, State ...

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 ...

We manage the State Environmental Policy Act (SEPA) on behalf of local governments and state agencies in Washington. This summary is designed to answer frequently asked questions about SEPA. A: ...

Regulations & Permits Use this portal to filter and search for all of our regulatory information.

After researchers pinpointed the toxic chemical that is killing coho salmon in freshwater, we got to work, alongside several partners, to protect coho salmon.

What would linkage mean for Washington? Linkage means combining Washington's Cap-and-Invest Program with similar carbon markets. In a linked market, allowances issued by California and Québec could be ...

Transform your kitchen and reduce food waste with expert tips from WA Department of Ecology. Start saving resources, time, and money today!