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Community Plan Exemption Checklist <br />City of Santa Ana Gary Avenue Business Park Project <br /> <br />37 <br />b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project <br />region is non- attainment under an applicable federal or state ambient air quality standard)? <br /> <br />No New Impact. SCAQMD states that if an individual project results in air emissions of criteria pollutants <br />(ROG, CO, NOx, SOx, PM10, and PM2.5) that exceed the SCAQMD’s recommended daily thresholds for <br />project-specific impacts, then it would also result in a cumulatively considerable net increase of the criteria <br />pollutant(s) for which the project region is in non-attainment under an applicable federal or state ambient <br />air quality standard. The methodologies from the SCAQMD CEQA Air Quality Handbook are used in <br />evaluating Project impacts. SCAQMD has established daily mass thresholds for regional pollutant emissions, <br />which are shown in Table AQ-1. <br />Table AQ-1: SCAQMD Regional Daily Emissions Thresholds <br />Pollutant Construction <br />(lbs./day) <br />Operations <br />(lbs./day) <br />NOx 100 55 <br />VOC 75 55 <br />PM10 150 150 <br />PM2.5 55 55 <br />SOx 150 150 <br />CO 550 550 <br />Lead 3 3 <br />Source: Air Quality Assessment (Appendix A) <br /> <br />Construction <br />Construction activities associated with the proposed Project would generate pollutant emissions from the <br />following: (1) demolition of the existing structures and removal of the existing infrastructure and pavement, <br />(2) site preparation, (3) grading, (4) building construction, (5) paving, and (6) architectural coating. The <br />volume of emissions generated on a daily basis would vary, depending on the intensity and types of <br />construction activities occurring. <br /> <br />It is mandatory for all construction Projects to comply SCAQMD Rules, including Rule 403 for controlling <br />fugitive dust, PM10, and PM2.5 emissions from construction activities. Rule 403 requirements include, but are <br />not limited to, applying water in sufficient quantities to prevent the generation of visible dust plumes, <br />applying soil binders to uncovered areas, reestablishing ground cover as quickly as possible, utilizing a <br />wheel washing system to remove bulk material from tires and vehicle undercarriages before vehicles exit <br />the Project site, covering all trucks hauling soil with a fabric cover and maintaining a freeboard height of <br />12-inches, and maintaining effective cover over exposed areas. Compliance with Rules 403 and 1113 were <br />accounted for in the construction emissions modeling. As shown in Table AQ-2, construction emissions <br />generated by the proposed Project would not exceed SCAQMD regional thresholds. Further, the Project s <br />contribution to cumulative levels of any criteria pollutant would not be cumulatively considerable and would <br />be less than significant. <br /> <br />Table AQ-2 Maximum Peak Construction Emissions <br /> <br />Construction Year <br />Reactive <br />Organic <br />Gases (ROG) <br />Nitrogen <br />Oxide (NOx) <br />Carbon <br />Monoxide <br />(CO) <br />Sulfur <br />Dioxide <br />(SO2) <br />Coarse <br />Particulate <br />Matter (PM10) <br />Fine <br />Particulate <br />Matter (PM2.5) <br />Construction Year 1 3.96 40.82 24.00 0.07 20.91 11.53 <br />Construction Year 2 45.41 17.55 19.85 0.04 2.05 1.11 <br />SCAQMD Threshold 75 100 550 150 150 55 <br />Exceed SCAQMD <br />Threshold? No No No No No No <br />Source: Air Quality Assessment (Appendix A) <br /> <br />8/22/2022 <br />Planning Commission 2 – 76