Crews are responding to a tanker truck rollover and spill into Indian Creek on July 18, 2025 at 11:30 a.m. A dual-tanker ...

Two Thurston County property owners were fined $204,000 by the Washington Department of Ecology for unpermitted shoreline development along the Deschutes River near Yelm. Chuck and Austin Rogers ...

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) ...

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 ...

Ecology is responsible for overseeing state rules that implement the State Environmental Policy Act (SEPA).