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Table 5 <br />SCAQMD Air Quality Significance Thresholds <br />Mass Daily Thresholds <br />Pollutant <br />Construction (Ibs/day) <br />Operation (Ibs/day) <br />NOx <br />100 <br />55 <br />VOC <br />75 <br />55 <br />PM 10 <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 />Toxic Air Contaminants, Odor and GHG Thresholds <br />TACs <br />Maximum Incremental Cancer Risk >_ 10 in 1 million <br />Cancer Burden > 0.5 excess cancer cases (in areas >_ 1 in 1 million) <br />Chronic & Acute Hazard Index > 1.0 (project increment) <br />Odor <br />Project creates an odor nuisance pursuant to SCAQMD Rule 402 <br />GHG <br />110,000 MT/yr CO2e for industrial projects <br />Ambient Air Quality Standards <br />Pollutant <br />SCAQMD Standards <br />NO2 -1-hour average <br />0.18 ppm (338 /mA3) <br />PM10 -24-hour average <br />Construction <br />Operations <br />10.4 µg/m^3 <br />2.5 u /m^3 <br />PM2.5 -24-hour average <br />Construction <br />Operations <br />10.4 µg/m^3 <br />2.5 /m^3 <br />SO2 <br />1-hour average <br />24-hour average <br />0.25 ppm <br />0.04 ppm <br />CO <br />1-hour average <br />8-hour average <br />20 ppm (23,000 µg/m^3) <br />9 ppm (10,000 /m^3) <br />Lead <br />30-day average <br />Rolling 3-month average <br />Quarterly average <br />1.5 µg/m^3 <br />0.15 µg/m^3 <br />1.5 µg/m^3 <br />Source: http://www.agmd.gov/docs/default-source/ceqa/handbook/scaqmd-air-quality-significance-thresholds.pdf <br />Cabrillo at First Mixed -Use Residential Project <br />931dih Air Quality, Global Climate Change, HRA and Energy Impact Analysis <br />27 19386 <br />