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EPA in Missouri

Public Notice: Southwest Jefferson County Mining National Priorities List (NPL) Superfund Site, Jefferson County, Missouri

Publish Date: 07/09/2020


First Five-Year Review Completed

The U.S. Environmental Protection Agency (EPA) Region 7 has completed the First Five-Year Review (FYR) for the Southwest Jefferson County Mining National Priorities List (NPL) Superfund Site (site), located in Jefferson County, Missouri.

Statutory FYRs are required by the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), commonly known as the Superfund Law, when hazardous substances remain on-site above levels that permit unrestricted use and unlimited exposure. FYRs provide an opportunity to evaluate the site remedy to determine whether it remains protective of human health and the environment. The remedy evaluated under this FYR focuses on Operable Units 1, 2 and 3 (OU-1, OU-2, and OU-3) – Residential Yards, the only OUs currently with a remedy for this site.

The contaminant of concern at the site is lead, which was extracted by mining activities in the Old Lead Belt beginning in the late 1700s. This FYR included an examination of relevant site documents and a site inspection. The assessment of this FYR found that the remedy is being constructed in accordance with the requirements of the Record of Decision and is functioning as designed.

The results of this review indicate that the remedy at OU-1 is expected to be protective of human health and the environment upon completion. In the interim, remedial activities at residential properties completed to date have adequately addressed all exposure pathways that could result in unacceptable risk at the remediated residential properties. The remedy at OU-2 and OU-3 is currently protective of human health and the environment, because all properties above the cleanup level have been remediated and barriers are in place clearly identifying lead contamination remaining at depth. In order to be protective in the long-term, institutional controls need to be implemented.

The First FYR was signed June 19, 2020. The Second FYR will begin in June 2024.

EPA has assessed the ability of the public to access this FYR through an internet-based repository and has determined that the local community has this ability. As a result, the First FYR Report, Administrative Records, and additional information may be found through on EPA’s website (see Site Documents & Data).

This FYR report is also available at the EPA Region 7 Records Center, 11201 Renner Boulevard, Lenexa, KS 66219. Fact Sheets for the site are available online. EPA encourages community members to ask questions and report any concerns about this site.

Questions or requests for site information and/or the FYR process can be submitted to:

Elizabeth Kramer
Community Involvement Coordinator
U.S. EPA Region 7 (ORA/OPA)
11201 Renner Boulevard
Lenexa, KS 66219
Phone: 913-551-7186
Toll-free: 1-800-223-0425
Greg Bach
Remedial Project Manager
U.S. EPA Region 7 (SEMD/LMSE)
11201 Renner Boulevard
Lenexa, KS 66219
Phone: 913-551-7291
Toll-free: 1-800-223-0425

Applicant or Respondent

Not applicable