Department of Ecology News Release - August 27, 2014

Details submitted for Boeing Renton plant cleanup
Public asked to comment on engineering specifications

RENTON – Contaminated soil and groundwater at The Boeing Company’s Renton plant would be cleaned up under technical plans Boeing submitted to the Washington Department of Ecology.

Ecology seeks public comment on the proposal, called an engineering design report, through Sept. 29, 2014. The report follows up on a cleanup plan approved by Ecology last year.

Boeing would perform cleanup at 12 locations, three of them on land leased at Renton Municipal Airport. Contaminants include residues of solvents and petroleum products from leaks and spills over many years.

The company began assembling airplanes at the site in 1941. Several cleanup studies have been performed on the property on the south shore of Lake Washington and across the Cedar River from the Renton airport. Several interim cleanup projects were done over the past 18 years to prevent contaminants from reaching the lake and river and to protect public and employee safety and health.

In the final cleanup, Boeing plans to:

The work will begin right after Ecology approval, anticipated later this year. The cleanup areas will then be subject to long-term monitoring, periodic reviews by Ecology and property use restrictions.

The draft report includes detailed construction plans, specifications, and operation and maintenance plans to carry out the cleanup. The report and related documents are available at:

People can send comments to Byung Maeng, Ecology site manager, at one of the following addresses:

An Ecology fact sheet provides additional background information.



Larry Altose, communications, 425-649-7009,, @ecySeattle

Byung Maeng, cleanup site manager, 425-649-7253,

Megan Hilfer, Boeing environmental communications, 425-237-2237,