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Comment Period

Costco Wholesale 670 cleanup site

Draft third periodic review report

Sept. 6, 2022 - Oct. 5, 2022, 11:59 p.m.

We invite you to review and comment on the draft periodic review report, which includes the results of our site condition review to ensure cleanup is still protective.

In 1995, former owners Home Depot and Union Pacific Railroad excavated about 36,000 cubic yards of contaminated soil and removed it from the site. About 1,900 additional cubic yards of soil were placed in containment cells under the parking lot.

In 2000, Costco excavated another 1,000 cubic yards of contaminated soil and 5,000 cubic yards of contaminated railroad ballast and put them in containment cells covered with clean soil. Because the cells with contamination remain at the site, a restrictive covenant was filed to make any future property owners aware of it and prevent activities that would expose the contamination.​

Ecology visited the site September 15, 2021, and found the cleanup remains effective.​

Learn more

Next steps

Ecology will review all comments received during the comment period and update the periodic review if needed. If no significant changes are made, the periodic review will become final. If significant changes are made, an additional public comment period will be held. We will hold an online public meeting if 10 or more people request one.​​

About periodic reviews

We complete a periodic review about every five years after cleanup construction is complete at a site when institutional controls are part of the cleanup. Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination.

The purpose of the periodic review is to make sure the controls remain effective and the cleanup still protects human health and the environment. This is the third periodic review for this cleanup site.

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Comment online

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Comment by mail

Ted Uecker
4601 N. Monroe St.
Spokane, WA 99205
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Ted Uecker
Site Manager

To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.