PUBLIC LAW 101-549—NOV. 15, 1990 104 STAT. 2507 "(e) PROCEDURES FOR ADMINISTRATION AND ENFORCEMENT.—The Buses. Administrator shall establish, within 18 months after the enactment of the Clean Air Act Amendments to 1990, and in accordance vsdth section 206(h), procedures for the administration and enforcement of standards for buses subject to standards under this section, testing procedures, sampling protocols, in-use compliance requirements, and criteria governing evaluation of buses. Procedures for testing (including, but not limited to, certification testing) shall reflect actual operating conditions. "(f) DEFINITIONS. —For purposes of this section— "(1) URBAN BUS.—The term 'urban bus' has the meaning provided under regulations of the Administrator promulgated under section 202(a). "(2) LOW-POLLUTING FUEL.— The term 'low-polluting fuel' means methanol, ethanol, propane, or natural gas, or any comparably low-polluting fuel. In determining whether a fuel is comparably low-polluting, the Administrator shall consider both the level of emissions of air pollutants from vehicles using the fuel and the contribution of such emissions to ambient levels of air pollutants. For purposes of this paragraph, the term 'methanol' includes any fuel which contains at least 85 percent methanol unless the Administrator increases such percentage as he deems appropriate to protect public health and welfare." (b) CONFORMING AMENDMENT. —Section 202(a)(4) of the Clean Air Act (42 U.S.C. 7521(a)(4)) is amended by striking out "standards prescribed under this subsection" every place it occurs and inserting "requirements prescribed under this title". SEC. 228. ENFORCEMENT. (a) INSPECTIONS AND TESTING.— Section 203(a)(2) of the Clean Air Act (42 U.S.C. 7522(a)(2)) is amended to read as follows: "(2)(A) for any person to fail or refuse to permit access to or copying of records or to fail to make reports or provide information required under section 208; "(B) for any person to fail or refuse to permit entry, testing or inspection authorized under section 206(c) or section 208; "(C) for any person to fail or refuse to perform tests, or have tests performed as required under section 208; "(D) for any manufacturer to fail to make information available as provided by regulation under section 202(m)(5);". (b) TAMPERING WITH VEHICLE EMISSION CONTROLS.— (1) Section 203(a)(3) (42 U.S.C. 7522(a)(3)) is amended to read as follows: "(3)(A) for any person to remove or render inoperative any device or element of design installed on or in a motor vehicle or motor vehicle engine in compliance with regulations under this title prior to its sale and delivery to the ultimate purchaser, or for any person knowingly to remove or render inoperative any such device or element of design after such sale and delivery to the ultimate purchaser; or "(B) for any person to manufacture or sell, or offer to sell, or install, any part or component intended for use with, or as part of, any motor vehicle or motor vehicle engine, where a principal effect of the part or component is to bypass, defeat, or render inoperative any device or element of design installed on or in a motor vehicle or motor vehicle engine in compliance with regulations under this title, and where the person knows or should
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