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Moses Lake Wellfield Contamination
Site Summary
The Moses Lake Wellfield Contamination site is located just north of the city of Moses Lake in eastern Washington. The site includes the Grant County Airport and the former Larson Air Force Base. The groundwater and soils at the site were contaminated with trichloroethylene (TCE) and other hazardous substances by operations of the former base and industrial activities associated with the aircraft industry. Approximately 1000 acres of groundwater are contaminated with TCE. There are also several contaminated soil waste areas scattered throughout the site.
Long-Term Cleanup Plan
In January 2008, we published proposed plans for a long-term cleanup of the contaminated groundwater and soils at this site. We held a public open house and a public meeting on the proposed cleanup plan in January and February to explain our plans and get public comments. The public comment period on our proposed cleanup plan closed in March. After reviewing public comments, we developed an interim plan for long-term cleanup of the contaminated groundwater and soils at the site.
Our cleanup plans include 11 soil sites that will need to be studied more, and if any of these areas exceed safety levels, they will be removed. We decided that one soil site will be completely removed, because the contamination there exceeds safety levels. For two of the five known plumes of trichloroethylene (TCE) groundwater contamination, we decided that a groundwater pump and treat system will be installed. The pump and treat system will be used to remove TCE from the groundwater until the drinking water standard of 5 ug/L is met.
To learn more about EPA’s long-term cleanup plans, read the September 2008 Interim Record of Decision (PDF) (49 pp. 1.5MB).
Documents
Interim Record of Decision for Moses Lake Wellfield (PDF) (49 pp. 1.5MB) - September 30, 2008
Interim ROD Appendix A: Responsiveness Summary (PDF) (24 pp. 131K) - September 30, 2008
Proposed Cleanup Plan (PDF) (26 pp. 148K) - January 2008
Figure 1 – Site Map (PDF) (1 pp. 1.25MB) |  |
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Additional documents
Fact Sheets
Contacts (Top)
| If you have questions about this site,please contact one of the following persons: | | Written information about this site is housed at the following locations: |
General Information
Suzanne Skadowski, EPA Community Involvement Coordinator
206-553-6689 or toll-free at 1-800-424-4372
Technical Information
Dennis Faulk, EPA Project Manager
509-376-8631
Technical Information
Marcia Knadle, EPA Hydrogeologist
206-553-1641 or toll-free at 1-800-424-4372 | | EPA Region 10 Superfund Records Center
1200 Sixth Avenue, Suite 900, ECL-076
Seattle, WA 98101
206-553-4494 or toll-free at 1-800-424-4372
Big Bend Community College Library
Building 1800
7611 Bolling Street
Moses Lake, WA 98837
509-793-2350 |
[ Main Cleanup | Brownfields ]
[ Superfund | FOIA | Records Center ]
Point of contact: Suzanne Skadowski
E-Mail: skadowski.suzanne@epamail.epa.gov
Phone Number: (206) 553-6689
Last Updated: 12/15/2008
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