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Community Plan Exemption Checklist <br />City of Santa Ana Gary Avenue Business Park Project <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 />No New Impact. SCAQMD states that if an individual project results in air emissions of criteria pollutants <br />(ROG, CO, NOx, SOx, PMio, 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 <br />Construction <br />(Ibs./day) <br />Operations <br />(Ibs./day) <br />NOx <br />100 <br />55 <br />VOC <br />75 <br />55 <br />PM10 <br />150 <br />150 <br />PM2.5 <br />55 <br />55 <br />sox <br />150 <br />150 <br />CO <br />550 <br />550 <br />Lead <br />3 <br />3 <br />Source: Air Quality Assessment (Appendix A) <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 />It is mandatory for all construction Projects to comply SCAQMD Rules, including Rule 403 for controlling <br />fugitive dust, PMio, 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 />1 2-inches, and maintaining effective cover over exposed areas. Compliance with Rules 403 and 1 1 1 3 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 />Table AQ-2 Maximum Peak Construction Emissions <br />Reactive <br />Coarse <br />Fine <br />Organic <br />Nitrogen <br />Carbon <br />Sulfur <br />Particulate <br />Particulate <br />Construction Year <br />Gases (ROG) <br />Oxide (NOx) <br />Monoxide <br />Dioxide <br />Matter <br />Matter <br />(CO) <br />(S02) <br />(PM10) <br />(PM2.5) <br />Construction Year 1 <br />3.96 <br />40.82 <br />24.00 <br />0.07 <br />20.91 <br />11.53 <br />Construction Year 2 <br />45.41 <br />17.55 <br />19.85 <br />0.04 <br />2.05 <br />1.11 <br />SCAQMD Threshold <br />75 <br />100 <br />550 <br />750 <br />750 <br />55 <br />Exceed SCAQMD <br />No <br />No <br />No <br />No <br />No <br />No <br />Threshold? <br />Source: Air Quality Assessment (Appendix A) <br />37 <br />