Cummins Northwest Inc Spokane
Cleanup Complete
In 1990 and 1993, soil samples from the Cummins Northwest Inc. Spokane site were contaminated with gasoline- and diesel-range petroleum hydrocarbons, and volatile organic compounds at levels requiring cleanup. The contamination was located under asphalt and under a building.
Groundwater monitoring wells were installed at the site, and sampled four times annually between 1993 and 1997. By March 1997, groundwater monitoring results showed that all contaminants were below cleanup levels.
About 25 cubic yards of contaminated soil were removed along with an oil-water separator, floor vaults, drains, and sumps. Contaminated soil remains 12 feet underground because it could not be removed without potentially damaging the building foundation. An asphalt cap prevents people from being exposed to remaining contaminated soil, and an environmental covenant restricts activities that could disturb it. Then, Ecology decided no further cleanup actions were needed.
Periodic Reviews
Learn more in the reports
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.
Institutional Controls 1
Environmental Covenant
Restrictions/Requirements
- Ongoing Maintenance of Remedy
- Prohibit Soil Disturbance
- Restrict Land Use
Restricted Media
- Soil
Documents 5
Legal 1
| Document Title | Document Date | Document Type |
| Cummins Northwest Inc Spokane - Restrictive Covenant | 5/9/1997 | Environmental Covenant; Alternative Mechanism |
Technical Reports 4
| Document Title | Document Date | Document Type |
| Fourth Periodic Review: Cummins Northwest Spokane Inc. | 8/31/2023 | Periodic Review (5 Year) |
| Cummins Northwest Inc Spokane - Third Periodic Review | 8/8/2018 | Periodic Review (5 Year) |
| Cummins Northwest Inc Spokane - Second Periodic Review | 9/19/2013 | Periodic Review (5 Year) |
| Cummins Northwest Inc Spokane - Periodic Review | 9/30/2008 | Periodic Review (5 Year) |
Places to see print documents
-
Eastern Regional OfficeN 4601 Monroe StSpokane, 99205-1265Please schedule an appointment to view print documents at this location.
Contaminants 2
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Non-Halogenated Organics - Petroleum Products-Unspecified | C | |||||
| Non-Halogenated Organics - Non-Halogenated Solvents | R |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated
Public Comment Period September 04, 2023-October 03, 2023
Draft Periodic Review Report Available
Ecology invites you to review and comment on the draft fourth periodic review report. We visited the site August 10, 2023, and found that the cleanup remains effective.
Review the draft report
Submit comments via mail or email by October 3:
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 an online public meeting if 10 or more people request it.