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EPA proposes East Troy, Ohio, site for Superfund National Priorities List

Release Date: 09/19/2007
Contact Information: Mick Hans, 312-353-5050, (Ohio EPA) Heather Lauer, 614-728-0039

No. 07-OPA159

CHICAGO (Sept. 19, 2007) - U.S. Environmental Protection Agency today proposed the East Troy Contaminated Aquifer site in Troy, Ohio, for addition to the Superfund National Priorities List. Sites on the NPL are eligible for additional study and resources under EPA's Superfund program. A 60-day public comment period is now under way.

The East Troy site lies underground along the western bank of the Great Miami River. It is comprised of at least two separate plumes of industrial solvent contamination including PCE (tetrachloroethene) and TCE (trichloroethene). Both are commonly used to degrease manufacturing equipment. Further investigation is needed to determine the sources and scope of the contamination, and preventive steps that may be needed to keep the contamination from impacting the city of Troy's municipal drinking water well fields. In a related EPA action earlier in 2007, solvent-vapor mitigation systems were installed in 16 residences and a school within the potential contamination area.

Two sites in EPA Region 5 were added to the NPL today, the Eagle Zinc site in Hillsboro, Ill., and the South Minneapolis Residential Soil Contamination site in Minneapolis, Minn. A second Region 5 site was proposed for addition to the NPL: Lusher Street Ground Water Contamination in Elkhart, Ind.

Nationally, seven new hazardous waste sites were added to the NPL, with 12 sites proposed for addition to the list. To date, there have been 1,569 sites listed on the NPL. Of these, 320 sites have been deleted from the list, resulting in 1,249 sites currently on the NPL. Cleanup construction has been completed at 1,017 sites. There are now 66 proposed sites awaiting final agency action.

Links to the Federal Register notice, information on submitting comments, background on the NPL process and summaries of the sites newly added or proposed are at

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