Item 18 - Appeal Application Nos. 2023-02 and 2023-03 for Cabrillo Town Center project

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8-hour period) and NO2 (0.18 ppm over a 1-hour period, 0.1 ppm over a 3-year average of the 98th percentile of the daily maximum 1-hour average, or 0.03 ppm averaged over an annual period).24 • Maximum on -site localized operational PM10 and PM2.5 emissions exceed the incremental 24- hour threshold of 2.5 tag/m3 or 1.0 pg/m3 PM10 averaged over an annual period.25 • The Project causes or contributes to an exceedance of the California 1-hour or 8-hour CO standards of 20 or 9.0 ppm, respectively; or • The Project creates an odor nuisance pursuant to SCAQMD Rule 402. (c) Toxic Air Contaminants The City recommends that the determination of significance shall be made on a case -by -case basis, considering the following criteria to evaluate TACs: • Would the project use, store, or process carcinogenic or non -carcinogenic toxic air contaminants which could result in airborne emissions? In assessing impacts related to TACs in this section, the City uses Appendix G as the thresholds of significance. The criteria identified above will be used where applicable and relevant to assist in analyzing the Appendix G thresholds. In addition, the following criteria set forth in the SCAQMD's CEQA Air Quality Handbook serve as quantitative air quality standards to be used to evaluate project impacts under Appendix G thresholds. Under these thresholds, a significant threshold would occur when:26 • The Project results in the exposure of sensitive receptors to carcinogenic or toxic air contaminants that exceed the maximum incremental cancer risk of 10 in one million or an acute or chronic hazard index of 1.0.27 For projects with a maximum incremental cancer risk between 1 in one million and 10 in one million, a project would result in a significant impact if the cancer burden exceeds 0.5 excess cancer cases. (d) Consistency with Applicable Air Quality Plans CEQA Guidelines Section 15125 requires an analysis of project consistency with applicable governmental plans and policies. This analysis is conducted to assess potential project impacts against 24 South Coast Air Quality Management District, Final Localized Significance Threshold Methodology, revised July 2008. 25 South Coast Air Quality Management District, Final —Methodology to Calculate Particulate Matter (PM) 2.5 and PM2.5 Significance Thresholds, October 2006. 26 South Coast Air Quality Management District, CEQA Air Quality Handbook, April 1993, Chapter 6 (Determining the Air Quality Significance of a Project) and Chapter 10 (Assessing Toxic Air Pollutants). 27 Hazard index is the ratio of a toxic air contaminant's concentration divided by its Reference Concentration, or safe exposure level. If the hazard index exceeds one, people are exposed to levels of TACs that may pose noncancer health risks. Cabrillo Town Center Project PAGE 20 City of Santa Ana Air Quality �v I.oI u C18 — 666 10/3/2023 July 2o2s