Health Consultation: Exposure Investigation, Indoor Air Testing, Sherwood Medical Site, Deland, Volusia County, Florida. EPA Facility ID: FLD043861392

摘要

This Exposure Investigation (EI) addresses the public health threat of possible vapor intrusion into buildings located near volatile organic compound (VOC) groundwater contamination from the Sherwood Medical hazardous waste site in Deland, Florida. The main contaminants of concern originating in on-site groundwater and extending off-site are trichloroethylene (TCE) and tetrachloroethylene (PCE). In April 2008, the U.S. Agency for Toxic Substances and Disease Registry (ATSDR) approved Florida DOH's request for financial and technical support for indoor air testing. This Exposure Investigation reports the methods and findings of that testing. After a review of all monitoring well data, the Florida Department of Health (DOH) determined that these two chemicals (TCE and PCE) in the upper and lower surficial groundwater were at high enough levels off-site to cause a concern for vapor intrusion into homes near the site. Other chemicals present in the surficial groundwater on-site (acetone, benzene, chloroform and 1,2-dichloroethylene (1,2-DCE)) are at low levels and have not been detected off-site; therefore, they are not a concern for vapor intrusion.