Department of Ecology News Release - April 3, 2015

Tukwila gas station signs cleanup agreement
Accord may aid larger Duwamish Waterway cleanup

TUKWILA – Current and former owners of a Tukwila gas station just south of Boeing Field have signed an agreement with the Washington Department of Ecology to test soil, stormwater and groundwater for contamination. The site is known to have petroleum-contaminated soil and groundwater.

The accord covers studies of cleanup options and development of cleanup plans for the site, which is about 250 feet east of the Duwamish Waterway.

Ecology invites the public to review and comment on the accord (called an Agreed Order), and an accompanying public participation plan, through May 6, 2015.

The 26,000 square-foot Boeing Field Chevron property is located at 10805 East Marginal Way, S. at that road’s intersection with Pacific Highway, S. in Tukwila.

The site has been a gas station since approximately 1940, and had several releases of petroleum in the 1990s and early 2000s. Various underground storage tanks and other equipment and at least 2,500 cubic yards of contaminated soil were removed from the site during that time.

The cleanup will contribute to a larger effort to control sources of contamination in Duwamish Waterway sediments.  Ecology and the U.S. Environmental Protection Agency jointly oversee the Lower Duwamish Waterway cleanup site, approximately five miles of waterway upstream from Harbor Island, for contaminated sediments.

Review documents

Comments or technical questions may be submitted to Dale Myers, site manager, 425-649-4446,, or Department of Ecology, 3190 160th Ave. S.E., Bellevue WA, 98004-5452.

An Ecology fact sheet provides additional background on the site and the agreed order.



Larry Altose, Ecology communications, 425-649-7009, @EcySeattle

Dale Myers, Ecology site manager, 425-649-4446