PUBLIC LAW 101-549—NOV. 15, 1990 104 STAT. 2489 finding of necessity under this subparagraph even if the plan for the area does not contain an approved demonstration of timely attainment. ". SEC. 214. FUEL WAIVERS. (a) COVERAGE.— Section 211(f)(1) of the Clean Air Act (42 U.S.C. 7545(f)(1) is amended by inserting "(A)" immediately after "(D" and by adding the following new subparagraph at the end thereof: "(B) Effective upon the date of the enactment of the Clean Air Act Amendments of 1990, it shall be unlawful for any manufacturer of any fuel or fuel additive to first introduce into commerce, or to increase the concentration in use of, any fuel or fuel additive for use by any person in motor vehicles manufactured after model year 1974 which is not substantially similar to any fuel or fuel additive utilized in the certification of any model year 1975, or subsequent model year, vehicle or engine under section 206.". (b) CONFORMING AMENDMENT.— Section 211(f)(3) of the Clean Air Act (42 U.S.C. 7545(f)(3)) is amended by inserting "(A)" immediately after "(1)". SEC. 215. MISFUELING. Section 211(g) of the Clean Air Act (42 U.S.C. 7545(g)) is amended to read as follows: "(g) MiSFUELiNG.—(1) No person shall introduce, or cause or allow the introduction of, leaded gasoline into any motor vehicle which is labeled 'unleaded gasoline only,' which is equipped with a gasoline tank filler inlet designed for the introduction of unleaded gasoline, which is a 1990 or later model year motor vehicle, or which such person knows or should know is a vehicle designed solely for the use of unleaded gasoline. "(2) Beginning October 1, 1993, no person shall introduce or cause or allow the introduction into any motor vehicle of diesel fuel which such person knows or should know contains a concentration of sulfur in excess of 0.05 percent (by weight) or which fails to meet a cetane index minimum of 40 or such equivalent alternative aromatic level as prescribed by the Administrator under subsection (i)(2).". SEC. 216. FUEL VOLATILITY. Section 211 of the Clean Air Act (42 U.S.C. 7545) is amended by adding the following new subsection at the end thereof: "(h) REID VAPOR PRESSURE REQUIREMENTS. — "(1) PROHIBITION.—Not later than 6 months after the date of Regulations, the enactment of the Clean Air Act Amendments of 1990, the Administrator shall promulgate regulations making it unlawful for any person during the high ozone season (as defined by the Administrator) to sell, offer for sale, dispense, supply, offer for supply, transport, or introduce into commerce gasoline with a Reid Vapor Pressure in excess of 9.0 pounds per square inch (psi). Such regulations shall also establish more stringent Reid Vapor Pressure standards in a nonattainment area as the Administrator finds necessary to generally achieve comparable evaporative emissions (on a per-vehicle bsisis) in nonattainment areas, taking into consideration the enforceability of such standards, the need of an area for emission control, and economic factors. "(2) ATTAINMENT AREAS.— The regulations under this subsection shall not make it unlawful for any person to sell, offer for
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