We're proposing the changes to the 2025 draft Zostera japonica permit that is used to control this noxious weed on clam beds ...

In June, Kaiser Aluminum started up a full-scale pump-and-treat system that treats 200 gallons of groundwater per minute and ...

Our interactive data dashboard helps organize information about residential wastewater and stormwater costs to prioritize ...

We invite interested members of the public, local, and tribal governments to review and comment on required 5-year updates to industry-written oil spill contingency plans. Washington Administrative ...

That is the true story of Rod Hankinson, who turned a missed opportunity into a lifetime of impact and inspiration. He has ...

Ecology is considering amendments to Chapter 173-423 WAC, the Clean Vehicles Program rule. Washington law (RCW 70A.30.010) requires Ecology to adopt certain California regulations to maintain ...

For almost 100 years, the Asarco Company operated a copper smelter in Tacoma. Air pollution from the smelter settled on the surface soil of more than 1,000 square miles of the Puget Sound basin.

On September 26, the Whatcom County Superior Court held a hearing and requested that Ecology revise some administrative details in the proposed claim form. Ecology plans to submit a revised form in ...

Businesses that generate any amount of dangerous waste are responsible for this waste from cradle to grave. In Washington, the Dangerous Waste Regulations (Chapter 173-303), which are based on the ...

This information was modified from Chapter 2 of At Home with Wetlands: A Landowner's Guide. Wetlands perform many ecological functions. Knowledge and understanding about the complexities wetland ...

Waters of the state belong to the public and can't be owned by any individual or group. Instead, a person or group may be granted a right to use a volume of water, for a defined purpose, in a specific ...