Facility Site ID: 82832887 Cleanup Site ID: 1073

Public Comment Period September 06, 2022-October 05, 2022

Draft Third Periodic Review Report Available

Ecology invites you to review and comment on the draft third periodic review report for the Costco Wholesale 670 site. We visited the site September 15, 2021, and found that the cleanup actions remain effective.

Review the draft report
  • Online: Periodic Review Report
  • At Ecology's Eastern Regional Office - N. 4601 Monroe St., Spokane, WA. Please call 509-329-3415 to make an appointment.
Submit comments via mail or email by October 5:

Ted Uecker, ted.uecker@ecy.wa.gov
N. 4601 Monroe St., Spokane, WA 99205-1265
Or use the online comment form

Next steps

Ecology will review all comments received during the comment period and revise the report 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 a public meeting if 10 or more people request it.

Site History

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.

Periodic Reviews

Ecology visited the site three times since initial cleanup was complete, and found that the cleanup actions remain effective. You can learn more in the reports:

Voluntary Cleanup Program

This site was cleaned up under our Voluntary Cleanup Program, which provides technical help to owners of contaminated sites.

Voluntary Cleanup Program customers pay fees to cover our costs for technical help and reviewing cleanup reports. Sites in this program must meet the same cleanup standards as the sites Ecology manages under legal orders.

Site use restrictions called institutional controls are in effect

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 controls are usually listed in environmental covenants recorded with the county.

Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.

Environmental Covenant

County Recording #: 5380425
County Recording Date: 5/17/2006

Covenant Restrictions

  • Prevent the Reuse or Relocation of Site Soil
  • Restrict Land Use

Media Restrictions

  • Soil
Legal 1
Document Title Document Date Document Type
Costco 670 Restrictive Covenant 5/17/2006 Environmental Covenant; Alternative Mechanism
Technical Reports 3
Document Title Document Date Document Type
Third Periodic Review: Costco Wholesale 670 8/30/2022 Periodic Review (5 Year)
Second Periodic Review: Costco Wholesale 670 12/2/2016 Periodic Review (5 Year)
Periodic Review Costco Wholesale 670 4/27/2012 Periodic Review (5 Year)
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Eastern Regional Office
    N 4601 Monroe St
    Spokane, 99205-1265
    Please schedule an appointment to view print documents at this location.

Contaminants 3

Contaminant Type
Surface Water
Metals - Metals Priority Pollutants R
Non-Halogenated Organics - Petroleum Products-Unspecified R
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons R
Confirmed Above Cleanup Levels
Below Cleanup Levels
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.