PFAS waste sites

In the spring of 2007 the MPCA and 3M negotiated a Consent Order bringing investigation and cleanup of three disposal sites under the formal Superfund process. The MPCA provides oversight of work plans or actions related to per- and polyfluoroalkyl substances (PFAS) contamination at three sites — 3M Chemolite site, 3M Woodbury site, and 3M Oakdale site. The Washington County Landfill is addressed under the state Closed Landfill Program.