Boeing's $900M Tab for Seattle's Toxic Waterway Cleanup Deal
Published Date: 3/12/2026
Notice
Summary
The government and the State of Washington are teaming up with Boeing, the City of Seattle, King County, and others to clean up pollution in Seattle’s Lower Duwamish Waterway. This big project will cost over $900 million, with different groups chipping in their share. People have 30 days to share their thoughts on this plan before it moves forward.
Analyzed Economic Effects
4 provisions identified: 1 benefits, 3 costs, 0 mixed.
In‑Water Remedy: $668M Obligation
The proposed consent decree requires The Boeing Company, the City of Seattle, and King County to design and perform the in‑water remedy at the Lower Duwamish Waterway Superfund Site, an effort EPA estimates will cost $668 million. The decree was lodged on March 4, 2026 as part of United States and State of Washington enforcement under CERCLA and Washington’s MTCA.
Other Defendants to Pay About $130M
The proposed settlement requires the remaining settling defendants (other than Boeing, City of Seattle, and King County) to pay a total of about $130 million toward response costs at the Lower Duwamish Waterway Superfund Site. One named settling party, Continental Holdings, Inc., will fund a 1.74% share of the work.
Covenant Not To Sue For Settling Parties
In return for their payments and performance, settling defendants and settling federal agencies will receive a covenant not to sue under sections 106 and 107 of CERCLA and under RCW 70A.305.040 of Washington’s Model Toxics Control Act. The covenant covers the matters resolved by the proposed consent decree.
United States to Pay $140M Share
The United States, on behalf of several settling federal agencies, will pay $140 million as part of the proposed consent decree addressing hazardous substance releases at the Lower Duwamish Waterway Superfund Site.
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