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EPA Superfund Site

NL INDUSTRIES/TARACORP LEAD SMELTER

IL | EPA ID ILD096731468

Exposure status: insufficient data

About this site’s exposure pathways: As of August 2025, there is not sufficient information available to determine the site-wide Human Exposure Control status at the NL Industries/Taracorp Lead Smelter site due to the Updated Residential Soil Lead Guidance for CERCLA Sites and RCRA Corrective Action Facilities (EPA, Jan. 2024). The site residential lead soil cleanup level is 500 parts per million (ppm). Activities planned to make the human exposure (HE) determination include evaluating background lead soil concentrations and bioavailability, re-assess cleanup conducted to date using updated lead guidance, and as appropriate develop a new residential cleanup level. United States Environmental Protection Agency expects to complete these assessments and make a determination on the site-wide Human Exposure Control status by April 2026.

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Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.

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