Advertisement On April 19, the U.S. Environmental Protection Agency (EPA) released its long-awaited final rule designating perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), including their salts and structural isomers, as “hazardous substances” under Section 102(a) of the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA” or “Superfund”) (the “Final Rule”). The designation, which takes effect 60 days … Continue reading U.S. EPA Finalizes Designation of Two PFAS Chemicals as Hazardous Substances Under CERCLA