On this page you will find stormwater project requirements and resources such as forms, design guidance, and templates for the Water Quality Combined Funding Program. These requirements apply for any ...

Washington is one of 17 states that adopt more stringent regulations on vehicle pollution from California known as “vehicle emissions standards.” ...

Stormwater Capacity Grants are non-competitive and awarded to Phase I and Phase II National Pollutant Discharge Elimination System (NPDES) municipal permittees for activities and equipment necessary ...

Businesses are required to notify us of dangerous waste activities if they manage dangerous waste under Washington State Dangerous Waste Regulations as mandated by the Resource Conservation and ...

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

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). Tank vessels regardless of ...

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 ...

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 ...