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3/21/80 5050.4 (b) If the proposed Federal action involves airport location, development which would cause or allow an increase in aircraft operations, or major new construction or expansion of passenger handling or parking facilities with Federal funding, paragraph (c) below shall be reviewed to determine if an air quality analysis needs to be done for the environmental assessment. For other types of .airport proposals,.no air quality analysis is normally required for the environmental assessment; normally it may be assumed that there is no potential for.significant air quality impacts. There may be exceptional actions, such as a proposed release of airport property for an industrial complex, which occur very infrequently and require FAA judgment on a case -by - case basis of how much and what kind of air quality information is needed. (c) For the following four conditions, if 1 applies, then 2 and 3 do not. However, if 1 is not applicable, then 2 and 3 must be examined since an airport may be located in an area which is designated Nonattainment for some pollutants and Prevention of Significant Deterioration for other pollutants. An analysis pursuant to the National Ambient Air Quality Standards may be necessary per 4. 1 If the proposed Federal action meets the conditions in a or b below, no air quality analysis is needed unless there is doubt raised by the state air quality board, the designated air quality region, the EPA, or others regarding inclusion in the Transportation Control Plan or conformity with the State Implementation Plan OR the state has established aircraft activity thresholds that trigger indirect source review. In such a situation, the airport sponsor shall contact the FAA for guidance. The environmental assessment shall include a letter from the air quality board or region supporting the applicable condition. a The action is included in and consistent with an areawide Transportation Control Plan as determined by the state air quality board or designated air quality region. b The action is not included in a Transportation Control Plan OR is in a location where there is no approved Transportation Control Plan or State Implementation Plan AND review by the air quality board or region ascertains that no analysis is needed. 2 If the proposed Federal action is in an area designated as Prevention of Significant Deterioration for pollutants subject to Prevention of Significant Deterioration review (presently only sulfur dioxide and particulates), no analysis of these pollutants is needed unless a large point source, such as a power plant on the airport, is involved in the action. Airport actions generally are not considered to be large point sources subject to Prevention of Significant Deterioration review. 3 If the airport location or proposed development is NOT in a Transportation Control Plan, is NOT otherwise exempted, and IS in an area designated as Nonattainment for a particular pollutant or pollutants, the Chap 5 Par 47 Page 33