Lower wildfire activity and changing traffic patterns stemming from the COVID-19 pandemic reduced air pollution in sensitive ...

Many locals have never seen the dense Olympia area exist without Capitol Lake at its center; they don’t know that the mouth ...

The Washington Department of Ecology issued penalties totaling over $1.1 million to Amazon Inc. and Walmart Inc. for illegally selling climate-polluting cooling and refrigeration products. These ...

Our robust quality assurance, or QA, system gives confidence in our regulatory and scientific decisions. We rely on quality assurance policies, guidance, and requirements to monitor, improve, and ...

Project site map. Click to enlarge. Free Flow Power Project 101, LLC (FFP Project) proposes to build an off-channel energy storage system next to the Columbia River in Goldendale. The system would ...

Read the guide for SQGs. Small quantity generators (SQGs) generate dangerous waste, but do so in lesser quantities than other generator categories. While all dangerous waste generators must follow the ...

Group water systems need to participate in the adjudication by filing court claims. These water systems include cities, special purpose districts, and private systems such as neighborhoods using a ...

We invite you to comment on two cleanup sites in the Lower Duwamish Waterway as well as a consent decree settling who will ...

This rulemaking will update both chapters to consider recommendations from the 2025 Best Achievable Protection (BAP) workgroups. To learn more about this rulemaking and recommendations from the 2025 ...

There have been recent news stories about a supposed slump in the transition to zero-emission transportation—that growth in electric vehicle (EV) sales has leveled off and manufacturers are scaling ...

This Earth Day, we are hosting a coloring book design contest for kids across Washington. Students will learn about how to help prevent pollution and design coloring book pages with this in mind. This ...