104 STAT. 2426 PUBLIC LAW 101-549—NOV. 15, 1990 Intergovernmental relations. 42 USC 7511a. Federal Register, publication. Marginal Area, a Moderate Area, a Serious Area, a Severe Area, or an Extreme Area as respectively classified under this section. "(2) Any reference in this subpart to 'next higher classification' or comparable terms shall be considered a reference to the classification related to the next higher set of design values in table 1. "SEC. 182. PLAN SUBMISSIONS AND REQUIREMENTS. "(a) MARGINAL AREAS.—Each State in which all or part of a Marginal Area is located shall, with respect to the Marginal Area (or portion thereof, to the extent specified in this subsection), submit to the Administrator the State implementation plan revisions (including the plan items) described under this subsection except to the extent the State has made such submissions as of the date of the enactment of the Clean Air Act Amendments of 1990. "(1) INVENTORY.— Within 2 years after the date of the enactment of the Clean Air Act Amendments of 1990, the State shall submit a comprehensive, accurate, current inventory of actual emissions from all sources, as described in section 172(c)(3), in accordance with guidance provided by the Administrator. "(2) CORRECTIONS TO THE STATE IMPLEMENTATION PLAN. — Within the periods prescribed in this paragraph, the State shall submit a revision to the State implementation plan that meets the following requirements— " (A) REASONABLY AVAILABLE CONTROL TECHNOLOGY CORRECTIONS.— For any Marginal Area (or, within the Administrator's discretion, portion thereof) the State shall submit, within 6 months of the date of classification under section 181(a), a revision that includes such provisions to correct requirements in (or add requirements to) the plan concerning reasonably available control technology as were required under section 172(b) (as in effect immediately before the date of the enactment of the Clean Air Act Amendments of 1990), as interpreted in guidance issued by the Administrator under section 108 before the date of the enactment of the Clean Air Act Amendments of 1990. " (B) SAVINGS CLAUSE FOR VEHICLE INSPECTION AND MAINTENANCE. — (i) For any Marginal Area (or, within the Administrator's discretion, portion thereof), the plan for which already includes, or was required by section 172(b)(ll)(B) (as in effect immediately before the date of the enactment of the Clean Air Act Amendments of 1990) to have included, a specific schedule for implementation of a vehicle emission control inspection and maintenance program, the State shall submit, immediately after the date of the enactment of the Clean Air Act Amendments of 1990, a revision that includes any provisions necessary to provide for a vehicle inspection and maintenance program of no less stringency than that of either the program defined in House Report Numbered 95-294, 95th Congress, 1st Session, 281-291 (1977) as interpreted in guidance of the Administrator issued pursuant to section 172(b)(ll)(B) (as in effect immediately before the date of the enactment of the Clean Air Act Amendments of 1990) or the program already included in the plan, whichever is more stringent. "(ii) Within 12 months after the date of the enactment of the Clean Air Act Amendments of 1990, the Administrator shall review, revise, update, and republish in the Federal
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