The Washington County Lead District Site consists of high concentrations of lead contamination from mining. The ore would normally be hauled from the mines to the concentrators (also known as mills) were it is formed into lead concentrate. Lead concentrate at the site was/is derived from the physical concentration of lead sulfide ore and is typically 70% to 80% (700,000 to 800,000 parts per million [ppm]) lead sulfide.
The primary problem areas at this site requiring action are lead contaminated soils in yards, lead contaminated drinking water, and lead contaminated dust in homes along these roadways.
The Washington County Lead District – Old Mines Site is located in a heavily mined region of eastern Missouri known as the Washington County Lead District. The Old Mines Site primarily includes residential areas within and around the communities of Old Mines, Kingston, Fertile, Tiff, and other smaller communities. It is only a portion of the larger Washington County Lead Mining District.