Rules and laws

Wisconsin DNR’s Remediation and Redevelopment Program Has Authority to Regulate Emerging Contaminants – including, PFAS Compounds

Chemicals that have seen industrial use for decades are now beginning to be better understood by scientists and others concerned with their potential impacts to human health and the environment. Per- and polyfluoroalkyl compounds (PFASs) are a class of emerging contaminants known to impact environmental media, such as groundwater, soil, sediment and surface water.

Additional information about PFASs can be found on the EPA’s web page, the ITRC’s collection of fact sheets and through the Agency for Toxic Substances and Disease Registry (ATSDR).

When discharged to the environment, PFAS compounds meet the definitions of hazardous substance and/or environmental pollution under Wis. Stat. § 292.01. Discharges of PFASs to the environment are subject to regulation under Wis. Stat. § 292 and the requirements for immediate notification, investigation, and remediation in Wis. Admin. Code chs. NR 700 through 754.

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Temporary groundwater monitoring wells

Temporary wells have become increasingly common as part of site investigations and Phase II environmental site assessments. Although temporary wells can be useful tools, they have limitations in their use. It is critical that temporary wells are properly installed to ensure the integrity of the results and that they are adequately protected to avoid becoming a conduit for contaminant migration.

Installation of temporary wells requires prior approval from the department, as described in s. NR 141.29, Wis. Adm. Code. In addition, compliance with Ch. NR 141 is required for all wells installed for the purposes of Ch. 292, Wis. Stats. This means all monitoring wells installed for site investigations and Phase II reports submitted to the department must meet the NR 141 requirements, which includes prior department approval for temporary wells.

To avoid incurring additional costs and unneeded project delays, refer to the DNR guidance on the appropriateness and limitations of temporary wells, publication RR-647, “Fact Sheet of Frequently Asked Questions about Temporary Wells“.