Health Consultation: East Troy Contaminated Aquifer Site (Vapor Intrusion), Troy, Miami County, Ohio. EPA Facility ID: OHN000510096

摘要

In June 2006, the Health Assessment Section (HAS) of the Ohio Department of Health (ODH) was asked by U.S. EPA Emergency Response Branch staff to participate in a multi-agency response team to evaluate the potential health impacts to the community posed by the detection of elevated levels of tetrachloroethylene (also known as perchloroethylene or PCE) in shallow groundwater underlying residential and commercial properties within the city limits of Troy, Ohio. The results of an environmental study funded by the city of Troy indicated the presence of PCE in indoor air samples collected from several public buildings, including the Troy police station, a church, and a school. Ohio EPA requested U.S. EPA assistance to carry out a Time-Critical Removal Action in the neighborhood to address these concerns. The U.S. EPA On-Scene Coordinator requested HAS assistance in establishing indoor air action levels for PCE and to evaluate the public health threat posed by these contaminants to area residents. In a letter (Appendix A), dated September 11, 2006, the Agency for Toxic Substances and Disease Registry (ATSDR) and HAS recommended to the U.S. EPA health-based screening levels for residential and non-residential buildings for PCE and proposed that interim measures be taken at those properties that exceeded the screening criteria to disrupt or eliminate the vapor intrusion pathway.