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Cabrillo at First Mixed-Use Residential Air Quality, Global Climate Change, HRA, and Energy Impact Analysis 24 19386 AIR QUALITY STANDARDS Significance Thresholds Appendix G of the State CEQA Guidelines Appendix G of the State CEQA Guidelines states that, where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make a significance determination. Pursuant to Appendix G, the project would result in a significant impact related to air quality if it would: ▪ Conflict with or obstruct the implementation of the applicable air quality plan; ▪ Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattainment under an applicable federal or state ambient air quality standard; ▪ Expose sensitive receptors to substantial pollutant concentrations; or ▪ Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people. The CEQA Guidelines Section 15064.7 provides the significance criteria established by the applicable air quality management district or air pollution control district, when available, may be relied upon to make determinations of significance. The potential air quality impacts of the project are, therefore, evaluated according to thresholds developed by SCAQMD in their CEQA Air Quality Handbook, Air Quality Analysis Guidance Handbook, and subsequent guidance, which are listed below.3 Therefore, the project would result in a potentially significant impact to air quality if it would: AIR-1: Conflict with or obstruct the implementation of the applicable air quality plan; AIR-2: Violate any air quality standard or contribute substantially to an existing or projected air quality violation as a result of: ▪ Criteria pollutant emissions during construction (direct and indirect) in excess of the SCAQMD’s regional significance thresholds, ▪ Criteria pollutant emissions during operation (direct and indirect) in excess of the SCAQMD’s regional significance thresholds. AIR-3: Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattainment under an applicable federal or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors); AIR-4: Expose sensitive receptors to substantial pollutant concentrations that would: ▪ Exceed SCAQMD’s localized significance thresholds, ▪ Cause or contribute to the formation of CO hotspots. AIR-5: Create objectionable odors affecting a substantial number of people. The SCAQMD is in the process of developing an Air Quality Analysis Guidance Handbook to replace the CEQA Air Quality Handbook. In the interim, supplemental guidance has been adopted by the SCAQMD. The 3 While the SCAQMD CEQA Air Quality Handbook contains significance thresholds for lead, Project construction and operation would not include sources of lead emissions and would not exceed the established thresholds for lead. Unleaded fuel and unleaded paints have virtually eliminated lead emissions from residential land use projects such as the Project. As a result, lead emissions are not further evaluated herein. 246/27/2022 Planning Commission 2 –77