A brownfield is a property that’s been developed in the past, and is now vacant, abandoned, or underutilized. It may have environmental contamination.

We continue to celebrate American Wetlands Month. Did you know Washington is home to nearly one million acres of wetlands? Wetlands come in all different shapes and sizes and are found in a variety of ...

The Climate Commitment Act (CCA) caps and reduces greenhouse gas emissions from Washington’s largest emitting sources and industries, allowing businesses to find the most efficient path to lower ...

Excessive levels of nutrients from human sources, such as nitrogen and carbon, are negatively impacting water quality in Puget Sound. This can lead to low dissolved oxygen, which impacts the health of ...

We invite your comments on the Draft Mitigated Determination of Nonsignificance (MDNS) that was issued for the SkyNRG Sustainable Aviation Fuel (SAF) Manufacturing Facility Project in Walla Walla ...

Water in eastern Washington is a scarce resource, and tracking groundwater sources and supplies is a critical part of making sure there is enough water to meet everyone’s needs. A new legal ...

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

You can now subscribe to automatic email updates about specific cleanup sites. These notices will let you know if we change a ...

We propose to approve Syngenta Seeds' air quality notice of construction (NOC) application. We will hold a public comment period if one is requested. Syngenta Seeds submitted a notice of construction ...

Washington Administrative Code (WAC) 173-182 and 173-186 requires oil handling facilities, pipelines, vessels and railroads to have a state-approved oil spill contingency plan that ensures their ...

Swamps are wetlands containing woody plants like trees and shrubs. Forest and shrub swamps are important habitats, especially ...