Page:United States Statutes at Large Volume 104 Part 4.djvu/206

 104 STAT. 2522 PUBLIC LAW 101-549—NOV. 15, 1990 tion (b) shall be modified to commence with the model year referred to in paragraph (1) in lieu of model year 1998. "(d) CHOICE OF VEHICLES AND FUEL.— The plan revision under this subsection shall provide that the choice of clean-fuel vehicles and clean alternative fuels shall be made by the covered fleet operator subject to the requirements of this subsection. "(e) AVAILABILITY OF CLEAN ALTERNATIVE FUEL. —The plan revision shall require fuel providers to make clean alternative fuel available to covered fleet operators at locations at which covered fleet vehicles are centrally fueled. "(f) CREDITS.— "(1) ISSUANCE OF CREDITS.— The State plan revision required under this section shall provide for the issuance by the State of appropriate credits to a fleet operator for any of the following (or any combination thereof): "(A) The purchase of more clean-fuel vehicles than required under this section. "(B) The purchase of clean fuel vehicles which meet more stringent standards established by the Administrator pursuant to paragraph (4). "(C) The purchase of vehicles in categories which are not covered by this section but which meet standards established for such vehicles under paragraph (4). "(2) USE OF CREDITS; LIMITATIONS BASED ON WEIGHT CLASSES.— "(A) USE OF CREDITS. — Credits under this subsection may be used by the person holding such credits to demonstrate compliance with this section or may be traded or sold for use by any other person to demonstrate compliance with other requirements applicable under this section in the same nonattainment area. Credits obtained at any time may be held or banked for use at any later time, and when so used, such credits shall maintain the same value as if used at an earlier date. " (B) LIMITATIONS BASED ON WEIGHT CLASSES.— Credits issued with respect to the purchase of vehicles of up to 8,500 lbs. GVWR may not be used to demonstrate compliance by any person with the requirements applicable under this subsection to vehicles of more than 8,500 lbs. GVWR. Credits issued with respect to the purchase of vehicles of more than 8,500 lbs. GVWR may not be used to demonstrate compliance by any person with the requirements applicable under this subsection to vehicles weighing up to 8,500 lbs. GVWR. "(C) WEIGHTING. — Credits issued for purchase of a clean fuel vehicle under this subsection shall be adjusted with appropriate weighting to reflect the level of emission reduction achieved by the vehicle. "(3) REGULATIONS AND ADMINISTRATION. — Within 12 months after the enactment of the Clean Air Act Amendments of 1990, the Administrator shall promulgate regulations for such credit program. The State shall administer the credit program established under this subsection. "(4) STANDARDS FOR ISSUING CREDITS FOR CLEANER VEHICLES. — Solely for purposes of issuing credits under paragraph (1)(B), the Administrator shall establish under this paragraph standards for Ultra-Low Emission Vehicles CULEV's) and Zero Emissions Vehicles CZEV's) which shall be more stringent than those otherwise applicable to clean-fuel vehicles under this part. The

�