Expansion of regulatory control of transportation sector discharges beyond the stormwater from the limited areas regulated under the Clean Water Act (CWA)—transportation facility vehicle maintenance ...

The Washington State Supreme Court agreed with the Department of Ecology in a dispute over whether Ecology should have followed notice and comment rulemaking procedures when adding two new ...

Editor’s note (July 8): The cost of the cleanup cited in this article was revised Monday, July 8, after the Department of Ecology provided updated information. Sampling and dredging begins this month ...

Toxic remnants from a wood treating facility’s operations linger in Ridgefield residents’ yards decades after the company halted operations, prompting a fresh round of sampling and further cleanup.

Accurate abundance estimates of plant populations are fundamental to numerous ecological questions and for conservation. Estimating population parameters for rare or cryptic plant species, however, ...

1. Model-based distance sampling is commonly used to understand spatial variation in the density of wildlife species. The standard approach assumes that individuals are distributed uniformly and ...

Free PFAS well testing has restarted on the West Plains as the EPA and state Department of Ecology determine the scope of contamination. Testing conducted by the government agencies first began ...