Letter Health Consultation: Vapor Intrusion Data Evaluation, Valley Pike VOC Site (a/k/a Mullins Rubber Products, Inc.), Dayton, Montgomery County, Ohio. EPA Facility ID: OHN000510923, March 24, 2014.

摘要

The Health Assessment Section (HAS) of the Ohio Department of Health (ODH) evaluated the results of the joint U.S. EPA/Ohio EPA vapor intrusion investigation of the Valley Pike VOC site (aka, Mullins Rubber Products, Inc. or MRP) located in Riverside, Montgomery County, Ohio. This letter health consultation (LHC) summarizes these results and discusses the public health implications of exposure to volatile organic compounds (VOCs) from vapor intrusion from the site. In brief, the sampling results demonstrated the presence of a completed exposure pathway in the area, connecting the indoor air in area homes with the VOC-contaminated groundwater, via the vapor intrusion route. The HAS supports a U.S. EPA time-critical removal action to further delineate the vapor intrusion threat in the residential community and to mitigate any on-going exposure that is discovered during the course of the U.S. EPA investigation. This letter and accompanying toxicological evaluation (Appendix A) explain how we arrived at our conclusions.