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City of San Leandro <br />311 MacArthur Boulevard Residential Project <br /> <br />26 <br />Table 3 Air Quality Thresholds of Significance <br />Pollutant/ Precursor <br />Average Daily Construction <br />Emissions (lbs/day) <br />Average Daily Operation <br />Emissions (lbs/day) <br />Operation Annual <br />Emission (tpy) <br />ROG 54 54 10 <br />NOX 54 54 10 <br />PM10 82 (exhaust) 82 15 <br />PM2.5 54 (exhaust) 54 10 <br />Notes: tpy = tons per year; lbs/day = pounds per day; NOX = oxides of nitrogen; PM2.5 = fine particulate matter with an aerodynamic <br />resistance diameter of 2.5 micrometers or less; PM10 = respirable particulate matter with an aerodynamic resistance diameter of 10 <br />micrometers or less; ROG = reactive organic gases. <br />Source: Table 2-1, BAAQMD 2017c <br />Project construction would result in temporary construction emissions and long-term operational <br />emissions. Construction activities such as the operation of construction vehicles and equipment <br />over unpaved areas, grading, trenching, and disturbance of stockpiled soils have the potential to <br />generate fugitive dust (PM10) through the exposure of soil to wind erosion and dust entrainment. In <br />addition, exhaust emissions associated with heavy-duty construction equipment would potentially <br />degrade regional air quality. Construction emissions were estimated using the California Emissions <br />Estimator Model (CalEEMod) version 2016.3.2 based on model defaults for the construction <br />duration and equipment types, excluding architectural coating, which was extended to last half of <br />the building construction phase to reflect a more accurate construction schedule. Additionally, it <br />was assumed that there would be no import or export of soil from the site. Daily construction <br />emissions are shown in Table 4. <br />Table 4 Construction Emissions (pounds/day) <br />Pollutant <br />Maximum <br />Daily Emissions <br />(Unmitigated)1 <br />Significance <br />Threshold <br />Significant <br />Impact? <br />ROG 8.0 54 No <br />NOx 22.7 54 No <br />CO 15.5 N/A N/A <br />PM10 (exhaust) 6.7 82 No <br />PM2.5 (exhaust) 3.7 54 No <br />1 – The BAAQMD threshold is for the average daily emissions, but the maximum daily emissions are provided here for a conservative <br />analysis. <br />Source: Appendix B, CalEEMod worksheet Table 2.1 “Overall construction-unmitigated” emissions. <br />As shown in Table 4, the proposed project would not exceed the BAAQMD short-term construction <br />thresholds shown in Table 3. Impacts from construction emissions would therefore be less than <br />significant and consistent with the General Plan EIR.