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

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Table 4 SCAQMD Emissions Thresholds Criteria Pollutant Construction Emissions Operation Emissions Regional Localized /a/ Regional Localized /a/ Volatile Organic Compounds (VOC) 75 -- 55 -- Nitrogen Oxides (NOx) 100 183 55 183 Carbon Monoxide (CO) 550 1,253 550 1,253 Sulfur Oxides (SOx) 150 -- 150 -- Respirable Particulates (PM10) 150 13 150 3 Fine Particulates (PM2.5) 55 7 55 2 /a/ Localized significance thresholds assumed a five -acre and 25-meter (82-foot) receptor distance in the Central Orange County source receptor area. The SCAQMD has not developed LST values for VOC or SOX. Pursuant to SCAQMD guidance, sensitive receptors closer than 25 meters to a construction site are to use the LSTs for receptors at 25 meters (SCAQMD Final Localized Significance Threshold Methodology, June 2008). Source: SCAQMD, South Coast AQMD Air Quality Significance Thresholds, 2019 Operations. CaIEEMod also generates estimates of daily and annual emissions of air pollutants resulting from future operation of a project. Operational emissions of air pollutants are produced by mobile sources (vehicular travel) and stationary sources (utilities demand). Utilities for the Project Site are provided by Southern California Edison (SCE) for electricity and Southern California Gas for natural gas. CalEEMod has derived default emissions factors for electricity and natural gas usage that are applied to the size and land use type of the Project in question. CaIEEMod also generates estimated operational emissions associated water use, wastewater generation, and solid waste disposal. Similar to construction, SCAQMD's CaIEEMod software was used for the evaluation of Project emissions during operation. CalEEMod was used to calculate on -road fugitive dust, architectural coatings, landscape equipment, energy use, mobile source, and stationary source emissions.18 To determine if a significant air quality impact would occur, the net increase in regional and local operational emissions generated by the Project was compared against the SCAQMD's significance thresholds.19 Details describing the operational emissions of the Project can be found in in the Technical Appendix. Toxic Air Contaminants Impacts (Construction and Operations). Potential TAC impacts are evaluated by conducting a qualitative analysis consistent with the CARB Handbook followed by a more detailed analysis (i.e., dispersion modeling), as necessary. The qualitative analysis consists of reviewing the Project to identify any new or modified TAC emissions sources. If the qualitative evaluation does not rule out significant impacts from a new source, or modification of an existing TAC emissions source, a more detailed analysis is conducted. 18 Energy consumption estimates with CaIEEMod 2022.1.1.14 are based on the California Energy Commission's 2020 Residential Appliance Saturation Survey (residential uses) and 2021 Commercial Forecast database, both of which reflected the 2019 Title 24 energy efficiency standards. These energy consumption estimates were adjusted to reflect the 2022 Title 24 standards that cumulatively produce a 0.49 percent reduction in electricity use and 0.45 percent reduction in natural gas use when compared to the 2019 standards. 19 South Coast Air Quality Management District, Air Quality Significance Thresholds, revised March 2015. SCAQMD based these thresholds, in part on the federal Clean Air Act and, to enable defining "significant" for CEQA purposes, defined the setting as the South Coast Air Basin. (See SCAQMD, CCEE ,�A Air uality Handbook, April 1993, pp. 6-1-6-2). Cabrillo Town Center Project PAGE 17 City of Santa Ana Air Quality liV touriCl 18 - 663 10/3/2023 July 2023