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The Environmental Protection Agency (EPA or Agency) is amending the data submission period for the Toxic Substances Control Act (TSCA) PFAS reporting rule by changing the start date for submissions and making corresponding changes to the end dates for the submission period, i.e., the data submission period begins on April 13, 2026, and ends on October 13, 2026, with an alternate end date for small manufacturers reporting exclusively as article importers of April 13, 2027. As promulgated in October 2023, the regulation requires manufacturers (including importers) of PFAS in any year between 2011-2022 to report certain data to EPA related to exposure and environmental and health effects. This change is necessary because EPA requires more time to prepare the reporting application being developed to collect this data. The Agency is separately considering reopening certain aspects of the rule to public comment (see the separate entry under RIN 2070-AL29). The delayed reporting date ensures that EPA has adequate time to consider the public comments and propose and finalize any modifications to the rule before the submission period begins.