Public Notice: Peoples Natural Gas Co. Superfund Site, Dubuque, Dubuque County, Iowa

Sixth Five-Year Review Started

The U.S. Environmental Protection Agency (EPA) Region 7 has completed the Sixth Five-Year Review for the Peoples Natural Gas Co. Superfund site. Five-Year Reviews are required by the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), commonly known as Superfund, when hazardous substances remain on-site above levels that permit unrestricted use and unlimited exposure. Five-Year Reviews provide an opportunity to evaluate the site remedy to determine whether it remains protective of human health and the environment.

This Five-Year Review found that the remedy at the site is protective because institutional controls are in place, preventing unacceptable exposure to contaminants remaining onsite. The remedy provides hydraulic containment for contaminated groundwater. This Five-Year Review Report was signed Dec. 1, 2025.

View cleanup documents on EPA’s Site Profile page (see Site Documents & Data). Site project information, including Five-Year Reviews, are available to the public at web repositories (under Reports and Documents).

Carnegie-Stout Public Library
360 W. 11th St.
Dubuque, IA 52001
563-589-4225

If you have questions about the site, please contact:

Shaylee Borcsani
Community Involvement Coordinator
U.S. EPA Region 7 (CEERD/CPSIB)
11201 Renner Boulevard
Lenexa, KS 66219
Email: borcsani.shaylee@epa.gov
Phone: 913-551-7713
Toll-free: 1-800-223-0425