Health Assessment for Petoskey Municipal Well/Petoskey Manufacturing Co., Petoskey, Michigan, Region 5. CERCLIS No. MID006013049

摘要

Petoskey Municipal Well/Petoskey Manufacturing Co. (PMC) is on the National Priorities List. PMC is a die cast and plating facility located in the city of Petoskey within 500 feet of the shoreline of Little Traverse Bay, Lake Michigan. PMC was suspected of dumping solvents and paint sludges onto the ground resulting in soil and groundwater contamination. Trichloroethylene (TCE) was first detected in the municipal well in 1981. The maximum concentration of TCE was 50 parts per billion (ppb). Dichloroethylene was detected in groundwater samples in 1982 at concentrations up to 32 ppb. Current levels for both TCE and DCE are below the proposed U.S. EPA drinking water standard (Maximum Contaminant Level) of 5 ppb and 7 ppb, respectively. Soil samples collected before excavation in 1982 were contaminated with TCE (120,000 ppb), xylene (150,000), toluene (10,000), and ethyl benzene (34,000). Based upon information reviewed, it has been concluded that the site is of potential public health concern because of the risk to human health that could result from possible exposure to hazardous substances at levels that may result in adverse health effects over time. Human exposure to TCE and DCE has occurred via ingestion of contaminated water and inhalation of contaminated air.