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Entiat Maintenance Shop

SITE DESCRIPTION

The Entiat Maintenance Shop site operates as a road maintenance shop.  In early 1998, underground storage tank (UST) tightness tests indicated that a release may have occurred from gasoline and diesel USTs at the Site.  A remedial excavation was conducted to evaluate and remove soil contamination.  As contaminated soil was being excavated, it became apparent that contamination had migrated under the adjacent maintenance shop building.  Additional excavation could not be conducted without risking damage to the structural integrity of the building.  Soils with petroleum hydrocarbon concentrations higher than Method A cleanup levels are not likely to remain at the Site.  Soil samples have not been collected from beneath the building, but air and groundwater samples indicate that contamination has been successfully remediated and no longer poses a threat to human health and the environment.  The Site received a No Further Action determination in 2002. 

SITE DOCUMENTS

Site Documents

• Periodic Review - February 17, 2009
• Fact Sheet - September 2002

Related Information

• Watershed Information for WRIA 46

Additional Resources

• Acronyms used by the Toxic Cleanup Program
• Cleanup Process: Major Steps & Definitions
• Data Submittal Requirements for All Cleanup Sites
• Facility/Site Atlas
• Toxics Cleanup publications