Health Assessment for McGraw-Edison Corporation, Calhoun County, Michigan, Region 5. CERCLIS No. MID005339676

摘要

The McGraw-Edison Corporation is listed on the National Priorities List. The plant manufactured air conditioners, humidifiers, dehumidifiers, electric heaters and air cleaners from 1958 through 1980. From 1970 through 1980, trichloroethylene (TCE) contaminated still bottoms (an oil waste) were spread on the site's dirt roads and parking areas to control dust. The residue was shown to contain up to 27,000 parts per million (ppm) TCE. It is estimated that a total of 15,000 gallons of wastes were spread on site. Groundwater samples analyzed from monitoring wells revealed TCE contamination down to depths of 200 feet in a sandstone formation. Extensive soil contamination was also identified. One on-site water supply well (200 feet deep in sandstone) revealed 21 ppb TCE. Soil boring samples showed a maximum TCE concentration of 362,347 ppb. Approximately 50 private wells were sampled and levels as high as 733 ppb were detected in water from these wells. 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 has occurred and/or may be occurring via contaminated groundwater, surface water, soils and sediments.