emissions of any criteria pollutant (or precursor pollutant) or greenhouse gas under any possible operational modes and conditions. (4) Zero-emissions vehicle infrastructure located within other facilities or projects For purposes of subsection (a), any zero-emission vehicle infrastructure located within— (A) a facility or project described in subsection (a), or (B) an area adjacent to a facility or project described in subsection (a) that primarily serves vehicles traveling to or from such facility or project, shall be treated as described in the paragraph in which such facility or project is described. (5) Exception for refueling property for fleet vehicles Subparagraphs (D), (E), and (F) of paragraph (1) shall not apply to property which is part of a unit which is used exclusively by fleets of commercial or governmental vehicles. . (b) Effective date The amendments made by this section shall apply to obligations issued after December 31, 2020.