Following the EPA’s proposed designation of PFOA, PFOS, and their salts and structural isomers, as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, otherwise known as Superfund) on Sept. 6, 2022, EPA has just published an advanced notice of proposed rulemaking to evaluate whether to designate a number of additional PFAS chemicals as hazardous substances under section 102(a) of CERCLA.

The advance notice of proposed rulemaking, announced on April 12 and published on April 13, seeks input and data concerning seven PFAS and their salts and structural isomers, or some subset thereof, as hazardous substances under CERCLA. 

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