The Remediation and Redevelopment (RR) Program is seeking input on the publication Guidance: What Landowners Should Know About Using Natural Attenuation to Clean Up Contaminated Groundwater (RR-671). The publication explains what natural attenuation is and how its use can protect public health, safety, and the environment.  

The publication must be shared by responsible parties with owners of property where natural attenuation is used to clean up contamination, as required by Wis. Admin. Code § NR 725.07(4)(a).  

The document can be found at the RR Program’s Public Notices & Guidance webpage under Current Notices. Submit comments through March 31, 2026, to DNRRRGuidance@wisconsin.gov.