Health Assessment for NL Industries/Taracorp Lead Site, Granite City, Madison County, Illinois, Region 5. CERCLIS No. ILD096731468

摘要

The NL Industries site is a National Priorities List Site located in Granite City, Madison County, Illinois. Metal refining, fabricating, and associated activities were conducted at the site until 1903, when the secondary lead smelting operation was started. Groundwater in the vicinity of the site is contaminated with elevated levels of sulfates (288 mg/l), dissolved solids (993 mg/l), and manganese (0.99 mg/l). The waste piles on site were sampled; analyses revealed elevated levels of lead (15,000-286,000 mg/kg), arsenic (620-4,100 mg/kg), copper (5,800-11,000 mg/kg), and iron (21,000-340,000 mg/kg). Runoff from the waste pile has shown concentrations of lead ranging from 3 to 40 mg/l. On-site soils have shown lead concentrations ranging from 1,550-48,300 mg/kg. Based on the available information, the site is considered to be of public health concern because of the risk to human health caused by the likelihood of exposure to hazardous substances via inhalation, ingestion, and direct contact exposures to contaminated soil. There is also the possibility that the human population in the area is being exposed via ingestion of contaminated groundwater.