; and (ii) the total of the surcharges assessed for all qualifying tickets for the flight. 6. Investing in decarbonization and infrastructure (a) Administration of surcharges For fiscal year 2026 and each fiscal year thereafter, there are appropriated, out of any funds in the Treasury not otherwise appropriated, to the Environmental Protection Agency an amount equal to 2 percent of the amounts collected pursuant to surcharges assessed under sections 4(b) and 5 during the previous calendar year to support the administration of the reporting program under section 4(a) and the assessment of surcharges under sections 4(b) and 5. (b) Clean airports program (1) Definitions In this subsection: (A) Air pollutant The term air pollutant means any air pollutant that is listed pursuant to section 108(a) of the Clean Air Act ( 42 U.S.C. 7408(a) ) and any precursor to such an air pollutant. (B) Zero-emission airport equipment or technology The term zero-emission airport equipment or technology means human-equipment or human-maintained technology at an airport that produces zero emissions of any air pollutant and any greenhouse gas. (2) Establishment For fiscal year 2026 and each fiscal year thereafter, there are appropriated, out of any funds in the Treasury not otherwise appropriated, to the Environmental Protection Agency an amount equal to 25 percent of the amounts collected pursuant to surcharges assessed under sections 4(b) and 5 during the previous calendar year to award rebates and grants to eligible recipients on a competitive basis— (A) to purchase or install zero-emission airport equipment or technology for use at 1 or more airports; (B) to finance airport infrastructure improvement projects that would reduce the emission of air pollutants and greenhouse gases related to the operations of the airport