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Community Plan Exemption Checklist City of Santa Ana Gary Avenue Business Park Project 38 Operation Operational activities associated with the Project would result in emissions of CO, VOCs, NOX, SOX, PM10, and PM2.5. Operational related emissions are expected from the following primary sources: area source emissions, energy source emissions, mobile source emissions, and on-site equipment emissions. Implementation of the proposed Project would result in long-term regional emissions of criteria air pollutants and ozone precursors associated with area sources, such as natural gas consumption, landscaping, applications of architectural coatings, and consumer products. Operational vehicular emissions would generate a majority of the emissions from implementation of the Project. Operational emissions associated with the proposed Project were modeled using CalEEMod and are presented in Table AQ-3. As shown, the proposed Project would result in long-term regional emissions of criteria pollutants, however, these emissions would be below the SCAQMD’s applicable thresholds. Therefore, the Project’s operational emissions would not exceed the NAAQS and CAAQS, would not result in a cumulatively considerable net increase of any criteria pollutant, and impacts would be less than significant. Table AQ-3: Proposed Project Operational Emissions Source Reactive Organic Gases (ROG) Nitrogen Oxide (NOx) Carbon Monoxide (CO) Sulfur Dioxide (SO2) Coarse Particulate Matter (PM10) Fine Particulate Matter (PM2.5) Summer Emissions Area Source Emissions 2.11 0.00 0.02 0.00 0.00 0.00 Energy Emissions 0.01 0.10 0.08 0.00 0.00 0.00 Mobile Emissions 0.52 6.65 6.34 0.04 2.80 0.81 Off-road Emissions 1.97 16.47 15.95 0.04 0.85 0.78 Total Emissions 4.61 23.22 22.39 0.08 3.65 1.59 SCAQMD Threshold 55 55 550 150 55 150 Exceeds Threshold? No No No No No No Winter Emissions Area Source Emissions 2.10 0.00 0.02 0.00 0.00 0.00 Energy Emissions 0.01 0.10 0.08 0.00 0.00 0.00 Mobile Emissions 0.53 6.92 6.08 0.04 2.80 0.81 Off-road Emissions 1.97 16.47 15.95 0.04 0.85 0.78 Total Emissions 4.61 23.49 22.13 0.08 3.65 1.59 SCAQMD Threshold 55 55 550 150 55 150 Exceeds Threshold? No No No No No No Source: Air Quality Assessment (Appendix A) b) Expose sensitive receptors to substantial pollutant concentrations? No New Impact. The daily construction emissions generated onsite by the proposed Project are evaluated against SCAQMD’s Localized Significance Thresholds (LSTs) to determine whether the emissions would cause or contribute to adverse localized air quality impacts. Receptor locations are off-site locations where individuals may be exposed to emissions from Project activities. Some people are especially sensitive to air pollution and are given special consideration when evaluating air quality impacts from projects. These groups of people include children, the elderly, individuals with pre- existing respiratory or cardiovascular illness, and athletes and others who engage in frequent exercise. Structures that house these persons or places where they gather to exercise are defined as “sensitive 8/22/2022 Planning Commission 2 – 77