EPA considers seven new PFAS compounds under CERCLA
The EPA is asking for public input on potentially adding seven new PFAS compounds under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This may impact a wide range of owners and operators of properties with PFAS contamination. CERCLA gives EPA the power to seek out responsible parties for any releases and to assure their help in the cleanup.
The EPA is now considering the following PFAS compounds:
- Perfluorobutanesulfonic acid (PFBS)
- Perfluorohexanesulfonic acid (PFHxS)
- Perfluorononanoic acid (PFNA)
- Hexafluoropropylene oxide dimer acid (HFPO–DA) sometimes called GenX
- Perfluorobutanoic acid (PFBA)
- Perfluorohexanoic acid (PFHxA)
- Perfluorodecanoic acid (PFDA)
These PFAS chemicals are surfactants used in commercial and industrial products ranging from food packaging, stain, and water-resistant materials to fire-fighting foams and paint additives. Since the phase-out of PFOA, some of the listed chemicals have been used as polymerization aids to make fluoropolymers. These seven compounds are specified based on the toxicity data available to the regulators. The agency is also looking into future actions to designate precursors of PFAS compounds.
PFAS chemicals are known as “forever chemicals” because they do not break down in the environment or our bodies. PFAS contamination can be present in several places. Common properties that might be impacted include:
- Public and private drinking water systems;
- Landfills and disposal sites;
- Airports, military bases, and other facilities where firefighting foam was or is used for training and incident response;
- Manufacturing and chemical facilities that produce or use PFAS. For example, at fluoropolymer production facilities, chrome plating, electronics, certain textiles, paper, and food packaging manufacturers.
This advanced notice of proposed rulemaking comes on the heels of the agency’s proposal to add two PFAS perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) as hazardous substances under CERCLA. If the rule proposed in the fall of 2022 is finalized, this would designate PFOA and PFOS as CERCLA hazardous substances.
CERCLA, also known as Superfund, provides federal resources to clean up uncontrolled or abandoned hazardous–waste sites and emergency releases of contaminants into the environment. This may impact you if you are an owner or operator of a property with PFAS contamination. If you use or store materials that may contain any of the potential PFAS compounds the agency is considering, you should evaluate all release pathways. You should consider potential opportunities to phase out the use of these listed compounds. At a minimum, you should evaluate your processes to ensure you have increased containment measures to limit any potential releases.
Key to remember: The EPA is seeking public comment and data for seven potential PFAS chemical designations under CERCLA. This may impact a wide range of owners and operators of properties with PFAS contamination.