We review and approve oil spill contingency plans for: Large oil-handling facilities that transfer oil over waters of the state. Hazardous liquids pipelines (oil pipelines).

Puget Sound faces many threats from the everyday activities of the 4.5 million people who live on or around the nation’s second largest marine estuary. The Puget Sound region includes 2,800 square ...

We value your input and want to hear from you as we continue to implement the Climate Commitment Act (CCA) across Washington state. Check out our current and upcoming opportunities to give your input, ...

Seattle Public Utilities is monitoring the potential for street sweeping to reduce the amount of tire wear pollutants, including 6PPD-quinone (6PPDQ), on the roadway. This new information will help ...

Working for Ecology offers great benefits — health care, retirement, vacation. But the biggest benefit of all is knowing that your work is helping create a cleaner, healthier, more beautiful state for ...

We regulate wetlands in Washington state regardless of federal jurisdiction. Wetlands are protected and managed through multiple state laws, including the state Water Pollution Control Act and the ...

Since the early 1800s, miners in Washington have searched for metals such as copper, gold, lead, magnesium, silver, uranium, and zinc. Mining for metals is called hardrock mining, because of the types ...

Model remedies. You can choose from one of three model remedies or combine them. Details on each remedy are in our publication Model Remedies for Contaminated Mines Sites in Washington.. Excavation ...

The Chehalis Basin is a 2,700 square-mile river drainage system located in Southwest Washington along the Chehalis River and its tributaries. It is the second-largest river basin in Washington, ...

We invite you to express your views on the State Waste Discharge Permit Application for Lincoln Rock Hydrogen Facility in East Wenatchee (Douglas County) from April 29 – June 5, 2025, 11:59 p.m.

We are working with the Environmental Protection Agency (EPA), Washington State Department of Health (DOH), Spokane Regional Health District, Eastern Washington University, and the West Plains Water ...