We offer scientific services to support environmental inquiry for projects funded through public dollars. We provide accurate, credible, and defensible analyses using the latest accredited methods and ...

We regulate water and hazardous waste at the Tesoro Logistics crude railcar offloading, light products truck/rail loading, and product storage facilities, and the marine crude storage terminal in ...

We help lakeshore property owners, communities, counties, state agencies, and Tribes identify and control invasive freshwater aquatic plants. Aquatic invasive plants are not native to Washington’s ...

Documents you can submit through TEDS 30 Day Notice (only for existing UST sites) Galvanic Cathodic Protection Evaluation Checklist Impressed Current Cathodic Protection Evaluation Checklist Leak ...

El Departamento de Ecología está proponiendo enmiendas al Capítulo 173-201A WAC, Normas de calidad del agua para aguas superficiales del estado de Washington (en inglés, Water Quality Standards for ...

Rulemaking that has been officially filed with the Washington State Legislature’s Code Reviser’s Office (filed a CR-101 form) and are sorted by topic. Recently closed rulemakings. (closed rulemaking ...

We are investing federal settlement and state penalty funds from Volkswagen to fund clean transportation grants. These grants accelerate access to zero-emission transportation options and spread ...

The Toxics Cleanup Program (TCP) operates under two major sets of laws that govern: Contaminated site cleanups, and Underground storage tanks and their operation, for tanks containing petroleum or ...

Smoke from wildfires, wood stoves, outdoor burning, agricultural burning, and prescribed fires (used to manage forests) causes poor air quality that can hurt your health. We make daily burn decisions ...

The easiest way to avoid food waste is to not overbuy. Proper storage of what you do purchase is another way to prevent food waste. Home composting is an excellent option for what can't be used or ...

Washington will receive $141 million from Volkswagen to settle violations of the state and federal Clean Air Acts. The funds are the result of a $112.7 million federal settlement negotiated by EPA and ...

Lea la historia de Hanford en español aquí. The past, present, and future of the Hanford Site is long and complex, dating back well before the site's construction in the 1940s and long into the future ...