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5050. 4 3/21/80 Clean Air Act Amendments of 1977 require that, prior to development, the agency must demonstrate that there will be an improvement in air quality with regard to that pollutant or that the increased emissions of the pollutant are within the available growth increment of the approved State Implementation Plan. To demonstrate either of these conditions, an emission inventory or modeling -exercise of -the Nonattainment pollutants for existing and forecast conditions shall be done for the environmental assessment.If this analysis shows that either condition would be met, it may be assumed that there would be no significant impact with regard to the Nonattainment pollutant or pollu— tants. If neither condition would be met, further detailed analysis in an environmental impact statement is required under paragraph 85e. 4 No air quality analysis is needed to ascertain conformance with National Ambient Air Quality Standards unless such need is indicated by the air quality board or air quality region. If needed, the analysis usually can be limited to an emissions inventory for each alternative considered in the environmental assessment. Contact with the state or local air pollution control agency will provide information and requirements for a specific area. (d) In any case, the environmental assessment shall include any measures to be incorporated in the action to minimize adverse air quality effects, including control of air pollution during construction. (e) The Airport Act requires that Airport Development Aid Program applications for projects involving airport location, runway location, or a major runway extension shall not be approved unless the governor of the state in which the project is located certifies that there is "reasonable assurance" that the project will be located, designed, constructed, and operated in compliance with applicable air and water quality standards. 1 To establish a "reasonable assurance," applicable standards and implementation requirements must have been established and an official designated who has authority to enforce compliance with the standards. When standards have not been approved but applicable standards have been promulgated by the EPA, EPA's approval shall be obtained. Lack of objection to air and water quality considerations as set forth in the environmental assessment or environmental impact statement may be construed as EPA approval. 2 While the air and water quality certifications shall be included in the environmental assessment or environmental impact statement whenever possible, their inclusion is not a prerequisite to approval of a finding of no significant impact or final environmental impact statement if the document includes evidence from the governor or appropriate state official indicating a reasonable expectation that the certification will be given. The state's certification or the EPA's approval must be received, however, before the project can be approved by the FAA. Chap 5 Par 47