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Community Plan Exemption Checklist <br />City of Santa Ana Gary Avenue Business Park Project <br />receptors"; they are also known to be locations where an individual can remain for 24 hours. The nearest <br />residential receptor is located approximately 2,200 feet north of the Project site. In addition, it is noted that <br />a dialysis center is 700 feet to the northeast. <br />Daily construction emissions generated onsite by the proposed Project are evaluated against SCAQMD's <br />screening look -up tables for LSTs that have been interpolated for a 2.5-acre site as the proposed construction <br />would disturb a maximum of 2.5 acres per day during grading activities. The appropriate Source Receptor <br />Area (SRA) for the LST analysis is Central Orange County (SRA 17). <br />Although the nearest residence is approximately 2,200 feet from the Project, the Air Quality Assessment <br />provides a conservative analysis of potential LST impacts at the dialysis center, 700 feet (21 3 meters) from <br />the site is provided to identify maximum potential impacts. As shown in Table AQ-4, emissions resulting from <br />Project construction would not exceed thresholds of significance established by the SCAQMD for any criteria <br />pollutant. <br />Table AQ-4: Project Localized Significance Summary of Construction <br />Construction Activity <br />Nitrogen Oxide <br />(NOx) <br />Carbon <br />Monoxide <br />(CO) <br />Particulate <br />Matter <br />(PM10) <br />Particulate <br />Matter <br />(PM2.5) <br />Demolition (2021) <br />31.44 <br />21.57 <br />11.72 <br />2.98 <br />Site Preparation (2021) <br />40.50 <br />21.15 <br />20.91 <br />11.53 <br />Grading (2021) <br />24.74 <br />15.86 <br />7.89 <br />4.32 <br />Building Construction (2021) <br />17.43 <br />16.58 <br />0.96 <br />0.90 <br />Building Construction (2022) <br />15.62 <br />16.36 <br />0.81 <br />0.76 <br />Paving (2022) <br />1 1.1 2 <br />14.58 <br />0.57 <br />0.52 <br />Architectural Coating (2022) <br />1.41 <br />1.81 <br />0.08 <br />0.08 <br />Maximum Daily Emissions <br />40.50 <br />21.57 <br />20.91 <br />11.53 <br />SCAQMD Localized Screening <br />Threshold (adjusted for 2.5 acres at <br />213 meters) <br />159 <br />31119 <br />76 <br />29 <br />Exceed SCAQMD Threshold? <br />No <br />No <br />No <br />No <br />Source: Air Quality Assessment (Appendix A) <br />Table AQ-5 identifies the localized operational impacts at the nearest receptor location in the vicinity of the <br />Project. As shown in Table AQ-5, emissions resulting from Project operations would not exceed thresholds of <br />significance established by the SCAQMD for any criteria pollutant. Therefore, the Project would result in no <br />new impact related to exposure of sensitive receptors to substantial pollutant concentrations. <br />Table AQ-5: Project Localized Significance Summary of Operations <br />Nitrogen <br />Carbon <br />Particulate <br />Particulate <br />Activity <br />Oxide (NOx) <br />Monoxide <br />Matter <br />(PMio) <br />Matter <br />(PM2.5) <br />(CO) <br />On -Site Emissions (Area, Energy, and Off- <br />16.57 <br />16.05 <br />0.85 <br />0.78 <br />road Equipment Sources) <br />SCAQMD Localized Significance <br />204 <br />4,248 <br />23 <br />8 <br />Threshold (5 acres at 2 7 3 meters) <br />Exceed SCAQMD Threshold? <br />No <br />No <br />No <br />No <br />Source: Air Quality Assessment (Appendix A) <br />39 <br />