Herculaneum Lead Contamination Fact Sheet

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Various fact sheets related to the Herculaneum Lead Contamination have been developed by the Department of Natural Resources, the U.S. Environmental Protection Agency, the Missouri Department of Natural Resources, the Missouri Department of Health and Senior Services and the Agency for Toxic Substances and Disease Registry to inform citizens of Herculaneum of high-lead levels.

EPA Region 7 invited the public to review and comment on a proposal to find that the Missouri State Implementation Plan for lead is substantially inadequate to attain the National Ambient Air Quality Standard in Herculaneum. Herculaneum was designated nonattainment for lead in 1991 under authorities provided by the Clean Air Act Amendments of 1990.

The Missouri Department of Natural Resources has analyzed the results of periodic soil sampling from yards in Herculaneum. This analysis, and the Missouri Department of Health and Senior Services’ review of the analysis, has found that in yards sampled within ¼ mile of the lead smelter there is a statistically significant increase in the concentration of lead. The increasing concentrations of lead occurred after new air emission controls installed at the facility were completed in July 2002.

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