Boeing Plant 2 Early Action Area | Region 10 | US EPA

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Boeing Plant 2 Early Action Area

Boeing Plant 2 Contacts

Melissa Blankenship (, Project Manager, 503-326-5020

Julie Congdon (, Community Involvement Coordinator, 206-553-2752

En Espaņol: Si desea hablar con alguien en Espaņol, llame a: Michael Ortiz (

What is an Early Action?

Early Action cleanup areas are parts of a Superfund site that EPA has determined may become a threat to people or the environment before the long-term cleanup for the site is completed.

Lower Duwamish Waterway Sitewide Information

Early Action Cleanup Areas

Site Summary

Boeing Plant 2 is located on the east bank of the Duwamish Waterway at 7755 East Marginal Way South in Seattle and Tukwila, Washington. Plant 2 was built in the late 1930s and was a major aircraft manufacturing facility during World War II. PCBs from large electricity generators and transformers were released at Plant 2 and into the LDW. A wide range of other hazardous chemicals are found in the soil, groundwater, and sediment, including metals (chromium, copper, cadmium), cyanide, petroleum products, and chlorinated solvents, such as trichloroethylene. Plant 2 is a Resource Conservation and Recovery Act (RCRA) permitted hazardous waste facility. Boeing is under an EPA RCRA Order to investigate and study cleanup options for Plant 2. Boeing has already completed several interim measures to clean up or control high risk areas before the final cleanup, including: removed nearly a mile of PCB-contaminated joint caulk; cleaned up storm drains to reduce metals and PCBs; and treated contaminated groundwater.

When the Lower Duwamish Waterway became a Superfund site, several “hot spot” areas of sediment contamination were targeted for cleanup before the larger Superfund cleanup. Boeing Plant 2 is one of these hot spot cleanups. Three other hot spot cleanups are nearby: Jorgensen Forge to the south and Terminal 117 across the waterway.  Slip 4 to the north, was cleaned up in 2012.

In August 2011, EPA released a Final Decision and Response to Comments for the cleanup of the sediments and shoreline at Boeing Plant 2. Boeing began implementation of the sediment cleanup in January 2013. Sediment cleanup will continue during the approved fish window of August 1 – February 15, ending in 2015. Cleanup options for the rest of the Plant 2 site (the Plant 2 uplands area) are anticipated to be issued in a Statement of Basis document in late 2014 or early 2015.

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Key Technical Documents


Toxic Substances Control Act (PCBs)

Given the presence of PCBs, cleanup of this site is also subject to the requirements of the Toxic Substances Control Act. For copies of documents relating to managing PCBs during site cleanup, contact Julie Congdon (, at 206-553-2752.

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