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Cleaning up the Lower Duwamish
Approaches to the cleanup
The Lower Duwamish Water Feasibility Study released in October 2010 outlines and evaluates alternative methods for cleaning up contaminated sediments in a 5-mile portion of the Lower Duwamish Waterway. It sets forth 11 alternatives for reducing health risks to achievable levels with different tradeoffs.
The graph below shows the different levels of benefits identified and the cost of each alternative.
Source: Page 37 of Executive Summary, Draft Final Feasibility Study, Lower Duwamish Waterway (PDF, external link). View entire Draft Final Feasibility Study, October 15, 2010 (external link).
Learn more
On October 18, 2010, the draft final Feasibility Study for the Lower Duwamish Waterway Superfund Site was released for public review and comment on the Lower Duwamish Waterway Group web site (external link).
