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 ...

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 ...

Since we started tracking cleanup site data, we’ve listed over 14,000 contaminated or formerly contaminated sites. While over half of them have been cleaned up, that still leaves more than 6,400 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Erosion occurs naturally on most of Puget Sound’s shoreline, shaping coastlines and creating beaches. The typical response to erosion has been the construction of bulkheads and seawalls — the armoring ...