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Congressional District # 12


EPA ID# OHN000508132
Last Updated: February, 2015

Site Description

The West Troy Contaminated Aquifer (WTCA) Site is located in the city of Troy, Miami County, Ohio. The Site consists of a groundwater plume of chlorinated volatile organic compounds (VOC) that have adversely impacted water quality in the local sand and gravel aquifer. The aquifer is a source of drinking water in the area and supplies water to the City of Troy’s West Wellfield. Groundwater contamination was first detected in a city well in 1986. Tetrachloroethene (PCE) is the primary VOC detected in the city well and in the groundwater plume. In particular, PCE has been detected in city production well PW-12W at concentrations above the EPA Maximum Contaminant Levels (MCLs) established under the Safe Drinking Water Act. The PW-12W city prodoction well is currently being pre-treated with the inclusion of air stripping before it is combined with other city production wells and enters the city treatment plant.  Previous investigations have indicated that the contamination originated from one or more sources on the west side of the Great Miami River (GMR).  The source or sources have not yet been identified. The plume is believed to originate at or near the former Wampler Buick/GMC (507 Elm Street) and Affordable Auto (515 Elm Street) properties.

Site Responsibility

The site is being addressed through federal lead and state supported actions.

Threats and Contaminants

Groundwater, soil, surface water, and sediments are potential threats with the primary concerns being groundwater and the potential poil source area(s).  Volatile organic compounds including PCE have been detected in the groundwater.  Undergraound storage tanks (USTs) have been previously removed in a portion of the possible soil source area.  Potential health threats to people include those who may come into direct contact with or accidential ingestion of contaminated groundwater, soils, sediments or surface water.  

Cleanup Progress

A recommendation for approval of a Remedial Investigation/ Feasibility Study (RI/FS) Work Assignment for the West Troy Contaminated Aquifer (WTCA) Site in Troy, Ohio was completed in December 2014.  Site specific plans for field sampling and investigation are scheduled to be reviewed and completed in 2015.  Access will initially be needed in order to sample locations at the possible soil source area properties.


Remedial Project Manager, U.S. EPA
jeffrey gore (gore.jeffrey@epa.gov)
(312) 886-6552

Community Involvement Coordinator, U.S. EPA
susan pastor
(312) 353-1325

Site Profile Information

This profile provides you with information on EPA's cleanup progress at this Superfund site.


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