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<br /> <br />16558-03 AQ & GHG Assessment 3 Warner Avenue Footlab <br />PROJECT AIR QUALITY IMPACTS <br />AIR QUALITY REGIONAL EMISSIONS THRESHOLDS <br />The SCAQMD has developed regional signiffcance thresholds for criteria pollutants, as summarized <br />at Table 1 (14). The SCAQMD’s California Environmental Quality Act (CEQA) Air Quality Signiffcance <br />Thresholds (March 2023) indicate that any projects in the South Coast Air Basin (SCAB) with daily <br />emissions that exceed any of the indicated thresholds should be considered as having an individually <br />and cumulatively signiffcant air quality impact. <br />TABLE 1: REGIONAL EMISSIONS SIGNIFICANCE THRESHOLDS <br />Pollutant Construction Operations <br />NOX 100 lbs/day 55 lbs/day <br />VOC 75 lbs/day 55 lbs/day <br />PM10 150 lbs/day 150 lbs/day <br />PM2.5 55 lbs/day 55 lbs/day <br />SOX 150 lbs/day 150 lbs/day <br />CO 550 lbs/day 550 lbs/day <br />Pb 3 lbs/day 3 lbs/day <br />lbs/day = Pounds Per Day <br />ppm = Parts Per Million <br />µg/m3 = Micrograms Per Cubic Meter <br />CONSTRUCTION ACTIVITIES <br />Construction activities associated with the Project would result in emissions of VOCs, NOX, SOX, CO, <br />PM10, and PM2.5. Construction related emissions are expected from the following construction <br />activities: <br />• Demolition <br />• Site Preparation <br />• Grading <br />• Building Construction <br />• Paving <br />• Architectural Coating <br />