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This action concerned a land parcel in the northwestern corner of the former Delphi Energy & Engine Management facility. It is now owned by the Anderson Redevelopment Commission.  The area addressed is a former degreaser location in the now demolished Plant 7.  The chemical trichloroethene was deeply embedded in the soil at this location. A plume of TCE in the ground water had extended off-site beneath a commercial and residential area.  Concentrations of TCE and its breakdown products are at levels which do not endanger human health and the environment.  Contamination had not been detected in ground water beneath the residential area beyond the commercial zone.

In 2006, EPA approved a remedy for the former degreaser location which was proposed and constructed by General Motors as the previous site owner.  This remedy involved enclosing the contaminated soil with an in-ground clay barrier to prevent release of TCE into the ground water.  However, EPA and GM discovered that the below-ground barrier wall had not been properly installed in two locations. This allows contaminated ground water to continue flowing through the enclosure area.  EPA now proposed a remedy for the degreaser area which involves:

1. Repairing the in-ground barrier to isolate the contaminated soil, and
2. Injecting oxidizing chemicals into the contaminated soil in which will destroy the TCE.