Site Plain EPA Superfund sites near you, in plain language

EPA Superfund Site

ORONOGO-DUENWEG MINING BELT

MO | EPA ID MOD980686281

Human exposure is NOT currently under control

About this site’s exposure pathways: As of April 2025, the Oronogo-Duenweg Mining Belt Superfund site is considered 'Current Human Exposure Not Under Control' because residents and recreational users of the mine waste areas and impacted surface water can be exposed through direct contact to lead, zinc, and cadmium contaminated soils and sediments. The planned activities to address these pathways are continuation of ongoing remediation of heavy metals contaminated soils and sediments. Several EPA and PRP performed removal and remedial actions have been completed throughout the site. Remedial actions began in 1996 on the residential yards. Ongoing work is being conducted at several designated mine waste areas, residential yards, groundwater and the Spring River watershed. Human exposure is expected to be under control by September 2030, with Long-Term Human Health Protection estimated to be achieved by the same date.

View EPA site profile

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.

Was this information helpful?