The Washington State Department of Ecology (Ecology) recently released a focus sheet that provides Ecology’s recommended soil and groundwater cleanup levels for a group of chemical compounds known as per- and polyfluoroalkyl substances (PFAS). This is the latest step by Ecology to require ...
The Washington State Department of Health (DOH) had previously issued a final rule that included State Action Levels (SALs) for five of the six PFAS compounds. The Ecology update builds on the DOH SALs using methods established under MTCA for cleanup level development. The new Cleanup Levels ap...