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EPA is developing a significant new use rule (SNUR) under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for long-chain perfluoroalkyl carboxylate (LCPFAC) chemical substances, and for perfluorooctanoic acid (PFOA) or its salts. On January 21, 2015, the EPA proposed to amend a SNUR for LCPFAC chemical substances by designating as a significant new use manufacturing (including importing) or processing of an identified subset of LCPFAC chemical substances for any use that will not be ongoing after December 31, 2015, and all other LCPFAC chemicals substances for which there are currently no ongoing uses. The EPA also proposed to make inapplicable the exemption for persons who import LCPFAC chemical substances as part of articles. In addition, the EPA proposed to amend a SNUR for perfluoroalkyl sulfonate (PFAS) chemical substances that would make inapplicable the exemption for persons who import PFAS chemical substances as part of carpets. Persons subject to these SNURs would be required to notify the EPA at least 90 days before commencing such manufacture or processing. The required notifications would provide the EPA with the opportunity to evaluate the intended use and, if necessary, an opportunity to protect against potential unreasonable risks from that activity before it occurs.