SOIL AMENDMENTS

The Washington State Department of Ecology (Ecology) also has limited information available on soil amendments that are waste-derived. For more information on soil amendments, contact:

Daniel Thompson at (360) 407-6108 or e-mail dtho461@ecy.wa.gov
                or
Holly Wescott at (360) 407-6113 or e-mail  hwes461@ecy.wa.gov.