This page may be viewed in: English
Draft Community Impacts Mitigation Plan Now Available
We are excited to announce that the draft Community Impacts Mitigation Plan (CIMP) is now available. This plan builds on the Community Outreach and Communications Plan that was finalized earlier this year. The CIMP aims to address community concerns related to cleanup construction by outlining strategies to manage potential impacts. You can review the full draft plan. We welcome feedback on the draft CIMP. Please send any comments or feedback to Laura Knudsen at knudsen.laura@epa.gov.
(Updated July 2024)
What We’re Working On
The 100% Remedial Design for the upper reach portion of the Lower Duwamish Waterway is now available. The document is posted here (see Upper Reach Design AOC Amendment 4) and describes key elements for implementing the cleanup remedy for part of the Lower Duwamish Waterway (LDW) Superfund Site. Construction is anticipated to begin in the upper reach in late 2024.
LDWG Statement on the EPA’s Updated cPAH Standard
Lower Duwamish Waterway Group will voluntarily include additional cleanup actions for the areas where cPAHs are above the original remedial action level in the design for the upper and middle thirds of the waterway.
What We’ve Accomplished
Completed Studies LDWG has completed multiple studies to help us better understand the contamination and ways to clean it up.
Early Action Areas LDWG is already making progress in its cleanup effort. We’ve completed cleanup at our five early action sites, which has lowered PCB contamination levels in sediments by over one half.
Learn More, Do More
You can support a clean Duwamish River too. Learn how you can volunteer and help keep the LDW clean.
The Lower Duwamish Waterway Group (LDWG) is a public-private partnership committed to advancing the U.S. Environmental Protection Agency (EPA)-led sediment cleanup of the Lower Duwamish Waterway in Seattle, Washington. LDWG (pronounced “Ludwig”) includes The Boeing Company, the City of Seattle, and King County. Since EPA listed the Lower Duwamish Waterway as a Superfund site in 2001, LDWG has invested nearly $200 million in waterway studies and early action cleanups. LDWG continues to advance the cleanup design and is working to implement source control actions until the cleanup is complete.