1. Short title This Act may be cited as the Pollution-Free Aviation Sites Act or the PFAS Act . 2. PFAS-related resources for airports (a) PFAS replacement program for airports Not later than 90 days after the date on which the Department of Defense approves a fluorine-free fire fighting agent to the Qualified Products’ List for products meeting Military Specification MIL–PRE–32725, dated January 12, 2023, the Secretary of Transportation shall establish a PFAS replacement program, in consultation with the Administrator of the Environmental Protection Agency, and subject to terms, conditions, and assurances acceptable to the Secretary, to reimburse eligible airports for the reasonable and appropriate costs associated with any of the following: (1) The one-time initial acquisition by an eligible airport of fluorine-free firefighting alternatives for— (A) the capacity of all required aircraft rescue and firefighting (ARFF) equipment listed in the most recent FAA-approved Airport Certification Manual, regardless of how the equipment was initially acquired