Commencement Bay Nearshore/Tideflats Superfund Site, Tacoma, Washington Remedial Investigations. Decisionmaking Framework for Management of Dredged Material: Application to Commencement Bay, Washington. Methods and Sites, and Site Control and Treatment Practices.

This report presents a decisionmaking framework based on a management strategy for dredged material that incorporates results of a suite of test protocols to assess the effects of physiochemical changes on contaminant mobility from dredged material placed in aquatic, wetland, and upland disposal environments. Descriptions of the physiochemical conditions at each disposal environment are provided as well as descriptions and citations of the test methods to be conducted. Examples of test results obtained from recent test applications at other Corps dredging projects are discussed. Test results are used to formulate management strategies regarding placement of dredged material and to determine treatment and control methods that are environmentally acceptable.