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District CEQA Reference No: 20190892 Page 4 of 6 1d)Ambient Air Quality Analysis: An ambient air quality analysis (AAQA) uses air dispersion modeling to determine if emissions increases from a project will cause or contribute to a violation of the ambient air quality standards. The District recommends that an AAQA be performed for the Project if emissions exceed 100 pounds per day of any pollutant. If an AAQA is performed, the analysis should include emissions from both Project specific permitted and non-permitted equipment and activities. The District recommends consultation with District staff to determine the appropriate model and input data to use in the analysis. Specific information for assessing significance, including screening tools and modeling guidance is available online at the District's website www.valleyair.org/ceqa. 2) If preliminary review indicates that a Mitigated Negative Declaration should be prepared, in addition to the effects identified above, the document should include: Mitigation Measures — If preliminary review indicates that with mitigation, the Project would have a less than significant adverse impact on air quality, the effectiveness of each mitigation measure incorporated into the Project should be discussed. District's attainment status — The document should include a discussion of whether the Project would result in a cumulatively considerable net increase of any criteria pollutant or precursor for which the San Joaquin Valley Air Basin is in non-attainment. Information on the District's attainment status can be found online by visiting the District's website at http://valleyair.org/aqinfo/ attainment.htm. 3) If preliminary review indicates that an Environmental Impact Report (EIR) should be prepared, in addition to the effects identified above, the document should also include the following: A discussion of the methodology, model assumptions, inputs and results used in characterizing the Project's impact on air quality. A discussion of the components and phases of the Project and the associated emission projections, (including ongoing emissions from each previous phase). 4) District Rule 9510 (Indirect Source Review) is intended to mitigate a project's impact on air quality through project design elements or by payment of applicable off-site fees. The proposed Project is subject to District Rule 9510 if (1) it has or will receive a project-level discretionary approval from a public agency and will equal or exceed 9,000 square feet of other space, or (2) if it has or will receive a project-level approval