104 STAT. 2500 PUBLIC LAW 101-549—NOV. 15, 1990 as attainment for carbon monoxide, the requirements of this subsection shall remain in effect to the extent such program is necessary to maintain such standard thereafter in the area. "(7) FAILURE TO ATTAIN CO STANDARD.—I f the Administrator determines under section 186(b)(2) that the national primary ambient air quality standard for carbon monoxide has not been attained in a Serious Area by the applicable attainment date, the State shall submit a plan revision for the area within 9 months after the date of such determination. The plan revision shall provide that the minimum oxygen content of gasoline referred to in paragraph (2) shall be 3.1 percent by weight unless such requirement is waived in accordance with the provisions of this subsection.". SEC. 220. LEAD PHASEDOWN. 42 USC 7545. Section 211 of the Clean Air Act is amended by adding the following new subsection at the end thereof: " (n) PROHIBITION ON LEADED GASOLINE FOR HIGHWAY USE. —After December 31, 1995, it shall be unlawful for any person to sell, offer for sale, supply, offer for supply, dispense, transport, or introduce into commerce, for use as fuel in any motor vehicle (as defined in section 219(2)) any gasoline which contains lead or lead additives.". SEC. 221. FUEL AND FUEL ADDITIVE IMPORTERS. Section 211 of the Clean Air Act is amended by adding the following new subsection at the end thereof: "(o) FUEL AND FUEL ADDITIVE IMPORTERS AND IMPORTATION. — For the purposes of this section, the term 'manufacturer' includes an importer and the term 'manufacture' includes importation.". SEC. 222. NONROAD ENGINES AND VEHICLES. (a) EMISSION STANDARDS. —Section 213 of the Clean Air Act (42 U.S.C. 7547) is amended to read as follows: "SEC. 213. NONROAD ENGINES AND VEHICLES. "(a) EMISSIONS STANDARDS.— (1) The Administrator shall conduct a study of emissions from nonroad engines and nonroad vehicles (other than locomotives or engines used in locomotives) to determine if such emissions cause, or significantly contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare. Such study shall be completed within 12 months of the date of the enactment of the Clean Air Act Amendments of 1990. "(2) After notice and opportunity for public hearing, the Administrator shall determine within 12 months after completion of the study under paragraph (1), based upon the results of such study, whether emissions of carbon monoxide, oxides of nitrogen, and volatile organic compounds from new and existing nonroad engines or nonroad vehicles (other than locomotives or engines used in locomotives) are significant contributors to ozone or carbon monoxide concentrations in more than 1 area which has failed to attain the national ambient air quality standards for ozone or carbon monoxide. Such determination shall be included in the regulations under paragraph (3). Regulations. "(3) If the Administrator makes an affirmative determination under paragraph (2) the Administrator shall, within 12 months after completion of the study under paragraph (1), promulgate (and from time to time revise) regulations containing standards applicable to
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