EXH AR023208: Sediment Characterization Hamm Creek Restoration Project Duwamish Turning Basin

This 1997 report by Science Applications International Corporation characterizes sediment quality in the Duwamish Turning Basin near Seattle, Washington, as part of the Hamm Creek Restoration Project. It presents results from chemical testing, biological bioassays, and sediment sampling to evaluate contaminant levels and compare them against sediment management standards. The study was prepared for the U.S. Army Corps of Engineers, Seattle District.

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Sediment characterization report prepared by Science Applications International Corporation (SAIC) for the U.S. Army Corps of Engineers, Seattle District, for the Hamm Creek Restoration Project at the Duwamish Turning Basin, Seattle, Washington, dated September 12, 1997. AR023208. Volume 1 of 2. Covers sediment sampling methodology, positioning, sample collection and processing, chemical testing, biological testing (amphipod acute toxicity, echinoderm larval test, 20-day Neanthes growth test), sediment core descriptions, sediment conventionals, contaminant chemistry results compared to sediment management standards, and bioassay results. Reference sediment collection also documented.

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