The Remediation and Redevelopment (RR) Program is seeking input on the publication Monitored Natural Attenuation Guidance (RR-0156).  

This publication provides guidance for persons who investigate, remediate and mitigate contaminated sites under Wisconsin Statute (Wis. Stat.) ch. 292 and Wisconsin Administrative (Wis. Admin.) Code chs. NR 700 – 799 and gives direction for characterization, assessment and monitoring of sites at sites where natural attenuation is under consideration as a possible remedial option for petroleum or chlorinated hydrocarbon contamination.  

The document can be found at the RR Program’s Public Notices & Guidance webpage under Current Notices. Comments may be submitted through Nov. 4, 2025, to DNRRRGuidance@wisconsin.gov.