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SANTA ANA REZONE PROJECT <br /> INITIAL STUDYIMITIGATED NEGATIVE DECLARATION <br /> Table 2: Maximum Daily Operation Emissions <br /> Regional Pollutant Emissions(pounds per day) <br /> Operations VOC NOx co Sox PM10 PM2.e <br /> Maximum Daily Emissions 3.26 1.85 20.33 0.05 4.44 1.15 <br /> SCAQMD Significance Threshoid 55 55 550 150 150 55 <br /> Exceed Threshold? No No No No No No <br /> Notes: <br /> CO=carbon monoxide <br /> NOx=nitrogen oxides <br /> PM,d=particulate matter less than 10 microns in diameter <br /> PM2s=particulate matter less than 2.5 microns in diameter <br /> SCAQMD=South Coast Air Quality Management District <br /> SOx=sulfur oxides <br /> VOC=volatile organic compounds <br /> Source:Appendix A. <br /> As shown in Table 2, operational criteria pollutant emissions would not be anticipated to exceed the <br /> recommended thresholds of significance. Therefore, the proposed project's long-term operational <br /> impacts would be less than significant. <br /> c) Expose sensitive receptors to substantial pollutant concentrations? <br /> Less than significant impact.This impact evaluates the potential for the proposed project's <br /> construction and operational emissions to expose sensitive receptors to substantial pollutant <br /> concentration. Sensitive receptors are defined as those individuals who are sensitive to air pollution <br /> including children, the elderly, and persons with pre-existing respiratory or cardiovascular illness. For <br /> purposes of CEQA, the SCAQMD considers a sensitive receptor to be a location where a sensitive <br /> individual could remain for 24 hours, such as residences, hospitals, or convalescent facilities.10 For <br /> the proposed project, the closest off-site sensitive receptor is a mobile home community located <br /> approximately 160 feet south of the project boundary. <br /> Localized Significance Thresholds <br /> The SCAQMD has developed localized significance thresholds (LSTs) as a tool to assist lead <br /> agencies in analyzing localized air quality impacts to sensitive receptors in the vicinity of the project. <br /> The SCAQMD's LST Methodology outlines how to analyze localized impacts from common pollutants <br /> of concern, including NOx, CO, PM1o, and PM2.5.11 Localized air quality impacts would occur if <br /> pollutant concentrations at sensitive receptors exceeded applicable NAAQS or California Ambient Air <br /> South Coast Air Quality Management District(SCAQMD).2008. Final Localized Significance Threshold Methodology. <br /> Revised July 2008.Website:http:llwwvv.agmd.gov/home/rules-compliancelrega/air-quality-analysis-handbookllocalized- <br /> significance-thresholds.Accessed Juiy 22,2025. <br /> Ibid. <br /> 3Z � FCS <br /> Ordinance No. IV h¢syjddeh FoyaNan5.5herepoi,team/site/Publicallans51te/Shar.d 0ocmne wpubliatlons/client(PN-JN)10327/0327007/1SMND/032700a73anta Ana Rexene Pmlect ISM ND,d, <br /> Page 44 of 118 <br />