Health Consultation: Chrysler Corporation, Phase I Area, Vapor Intrusion Investigation and Mitigation, Behr VOC Plume Site, Dayton, Montgomery County, Ohio. EPA Facility ID: OHN000510164, September 30, 2008

摘要

In October, 2006, the Health Assessment Section (HAS) was asked to participate in a multi-agency emergency response team to evaluate the potential health impacts to the community posed by the elevated levels of trichloroethylene (TCE) in shallow groundwater underlying residential properties in the north Dayton area of Montgomery County, Ohio (Figure 1). The Ohio Environmental Protection Agency (Ohio EPA) requested U.S. Environmental Protection Agency (USEPA) and HAS assistance to carry out a time-critical investigation in the neighborhood to address these concerns. The results of groundwater sampling by the Chrysler Corporation for the Behr-Dayton Facility and deep soil gas sampling by the Ohio EPA showed the presence of TCE in the groundwater and soil gas in the McCook Field residential area that exceeded screening levels established by USEPAs Subsurface Vapor Intrusion Guidance (USEPA, 2002). Exceeding these guidance levels indicates that vapor-phase chlorinated solvents emanating from the underlying groundwater might pose an unacceptable risk to area residents through the vapor intrusion pathway.