Public Notice: Proposed consent decree for Lower Duwamish Waterway in Seattle
Summary
On March 4, 2026, EPA, the U.S. Department of Justice, and the state of Washington reached agreement on a proposed settlement (called a consent decree) with more than 100 potentially responsible parties to address hazardous substances released into the Lower Duwamish Waterway in Seattle. Cleanup work is estimated to cost $668 million and take at least 10 years to complete.
Under the settlement, the Lower Duwamish Waterway Group – which consists of the Boeing Company, city of Seattle, and King County – agreed to design and perform the cleanup plan EPA selected for the in-water portion of the Lower Duwamish Waterway Superfund site.
The consent decree was lodged in U.S. District Court for the Western District of Washington and is subject to a 30-day public comment period as well as final court approval.
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