Tacoma Smelter Plume Area

 Remedial Investigation, Feasibility Study, and Cleanup Action Plan
Camp and Retreat Facility, Vashion Island, Washington 

Farallon completed an RI/FS of a 40-acre property within the Tacoma Smelter Plume (TSP) area, which is characterized by widespread arsenic and lead contamination in shallow soil resulting from smelter plume fallout.  The property was formerly a horse farm that is being redeveloped into a camp and retreat facility.  Conversion of the site for use by children and the property’s location within the TSP necessitated close collaboration with Ecology and the King County Department of Development and Environmental Services to complete an RI/FS and develop a Cleanup Action Plan that would facilitate property redevelopment while ensuring site conditions that are protective of facility staff and users.

Farallon completed the RI/FS and successfully negotiated a cleanup approach with Ecology that was considered innovative and protective of human health.  Farallon is working with Ecology to conduct a scientific study of the effects of the metals on flora and fauna characteristic of the Pacific Northwest, in an effort to refine terrestrial ecologic risk factors affecting selection of cleanup levels for all sites within the TSP.