Dredging as a Remedial Method for a Superfund Siteby Keith Phillips, US Army Corps of Engineers, Environmental Resources Section, Seattle, WA, USA,
John Malek, US Army Corps of Engineers, Environmental Resources Section, Seattle, WA, USA,
Document Type: Proceeding Paper
Part of: Dredging and Dredged Material Disposal
Remedial action at the Commencement Bay Nearshore/Tideflats Superfund Site, in the State of Washington, is expected to include dredging and disposal of contaminated sediments located in the bay's industrialized waterways. In addition, Commencement Bay's intensive navigation activities routinely require handling contaminated sediments from these waterways. In response to this close interaction between Superfund cleanup investigations and navigation needs, the Corps of Engineers assisted the State of Washington by conducting an analysis of alternative dredging methods and equipment, disposal methods and sites, and site control and treatment practices for contaminated sediments derived from the bay. The alternatives evaluation considered three basic factors: cost; degree of confinement and release of volatile, soluble, and sediment-bound contaminants resulting; and, applicability, limitations and other considerations of each alternative.
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