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City of Santa Ana <br />Environmental Checklist <br />construction- related daily (short -term) emissions for the conservative -case scenarios during which <br />emissions from construction components that overlap would exceed the SCAQMD localized <br />significance thresholds for PM2.5. As such, the implementation of Mitigation Measures AQ -1 and AQ- <br />2 to reduce short -term construction emissions is required and will bring emissions of PM2.5 to a <br />less- than - significant level. <br />Table 3 -7. Estimate of Localized Construction Emissions (pounds per day) <br />Localized Construction Emissions <br />ROG <br />NOx <br />CO <br />SOx <br />PM10a <br />PM2.5 <br />Demolition <br />5 <br />39 <br />24 <br /><1 <br />2.4 <br />2.3 <br />Excavation & Soils Export <br />4 <br />35 <br />18 <br /><1 <br />1.7 <br />1.7 <br />Grading & Soils Prep <br />3 <br />26 <br />15 <br /><1 <br />3.1 <br />2.3 <br />Site Trenching & Bldg Foundation <br />2 <br />29 <br />20 <br /><1 <br />1.9 <br />1.9 <br />Building Construction 2013 <br />9 <br />52 <br />34 <br /><1 <br />3.9 <br />3.9 <br />Building Construction 2014 <br />8 <br />49 <br />34 <br /><1 <br />3.5 <br />3.5 <br />Concrete & Asphalt <br />4 <br />27 <br />19 <br /><1 <br />2.3 <br />2.3 <br />Architectural Finishing <br />19 <br />3 <br />2 <br /><1 <br />0.2 <br />0.2 <br />SCAQMD Daily Significance Threshold <br />115 <br />715 <br />- <br />6 <br />4 <br />Excavation & Soils Export and Grading & Soils Prepb <br />8 <br />61 <br />33 <br /><I <br />4.8 <br />3.9 <br />Grading & Soils Prep and Site Trenching & Bldg <br />5 <br />55 <br />35 <br /><1 <br />5 <br />4.2 <br />Foundation <br />Building Construction 2014 and Concrete & Asphalt <br />13 <br />76 <br />52 <br /><1 <br />5.8 <br />5.8 <br />Exceed Threshold? <br />No <br />No <br />No <br />No <br />No <br />Yes <br />Notes: <br />Construction emission calculation worksheets are included in Appendix A. <br />a PMro emissions estimates take into account compliance with SCAQMD Rule 403 requirements for <br />fugitive dust suppression, which require that no visible dust be present beyond the site boundaries, as <br />well as the use of EPA Tier 2 equipment. <br />b Localized thresholds derived from SCAQMD Localized Significance Threshold Tables and are based on the <br />project location (Source Receptor Area [SRAj 17, the Central Orange County), project area disturbed in any <br />given day (2- acres), and the distance to the nearest sensitive receptor (25 meters). <br />Source: SCAQMD Localized Significance Threshold MethodologyforCEQA Evaluations, and Particulate <br />Matter (PM) 2.5 Significance Thresholds and Calculation Methodology. <br />Source: ICF 2012, <br />Mitigation Measure AQ -1: During grading and soil preparation, the maximum amount of grading <br />allowed per day will not exceed 0.75 acre. These limitations will be specified in the final grading <br />permits and bid specifications to be approved by the City of Santa Ana Planning and Building Agency <br />prior to issuance of a grading permit. Adherence to these requirements would thereby reduce the <br />daily intensity of fugitive particulate emissions associated with the grading and soil preparation <br />component. <br />Mitigation Measure AQ -2: During the Building Construction 2014 and Concrete & Asphalt phases <br />of the project (as noted in Table 3 -7), construction - related equipment, including heavy -duty <br />equipment, motor vehicles, and portable equipment, will meet EPA - Certified Tier 2 emissions <br />standards, or higher. <br />The Bat Nha Buddhist Meditation Center 3-22 June 2013 <br />Initial Study /Mitigated Negative Declaration ¢r 0021512 <br />31 C -75 <br />