31C - CUP - 803 S SULLIVAN ST - Laserfiche WebLink

Home Browse Search

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