91 STAT. 738
PUBLIC LAW 95-95—AUG. 7, 1977 approve the Governor's recommendation if he finds that such variance is in the national interest. No Presidential finding shall be reviewable in any court. The variance shall take effect if the President approves the Governor's recommendations. The President shall approve or disapprove such recommendation within ninety days after his receipt of the recommendations of the Governor and the Federal Land Manager. "(iii) In the case of a permit issued pursuant to this subparagraph, such facility shall comply with such emission limitations under such permit as may be necessary to assure that emissions of sulfur oxides from such source, together with all other sources, will exceed the otherwise applicable maximum allowable increases for a period of exposure of twenty-four hours or less on not more than eighteen days during any annual period and that during such day such emissions will not exceed the following maximum allowable increases over the baseline concentration for such pollutant: MAXIIVIUIVI ALLOWABLE INCREASE [In micrograms per cubic meter] Low terrain areas
Period of exposure 24-hr maximum 3-hr maximum
Analysis.
Continuous air quality monitoring data.
Regulations.
Regulations.
..
High terrain areas
36 130
62 221
"(e)(1) The review provided for in subsection (a) shall be preceded by an analysis in accordance with regulations of the Administrator, promulgated under this subsection, which may be conducted by the State (or any general purpose unit of local government) or by the major emitting facility applying for such permit, of the ambient air quality at the proposed site and in areas which may be affected by emissions from such facility for each pollutant subject to regulation under this Act M^hich will be emitted from such facility. "(2) Effective one year after date of enactment of this part, the analysis required by this subsection shall include continuous air quality monitoring data gathered for purposes of determining whether emissions from such facility will exceed the maximum allowable increases or the maximum allowable concentration permitted under this part. Such data shall be gathered over a period of one calendar year preceding the date of application for a permit under this part unless the State, in accordance with regulations promulgated by the Administrator, determines that a complete and adequate analysis for such purposes may be accomplished in a shorter period. The results of such analysis shall be available at the time of the public hearing on the application for such permit. "(3) The Administrator shall within six months after the date of enactment of this part promulgate regulations respecting the analysis required under this subsection which regulations— "(A) shall not require the use of any automatic or uniform buffer zone or zones, "(B) shall require an analysis of the ambient air quality, climate and meteorology, terrain, soils and vegetation, and visibility at the site of the proposed major emitting facility and in the area potentially affected by the emissions from such facility for each pollutant regulated under this Act which will be emitted from, or which results from the construction or operation of, such facility, the size and nature of the proposed facility, the degree of
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