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City of Santa Ana <br />Environmental Checklist <br />considered a federal nonattainment area for these pollutants. Table 3 -3 lists each criteria pollutant <br />and their related attainment status. <br />Table 3 -2. Federal and State Ambient Air Quality Standards <br />Pollutant <br />Averaging Time <br />CAAQSa NAAQSb <br />Ozone (03) <br />1 hour <br />0.09 ppnnc — <br />8 hour <br />0.070 ppm 0.075 ppm <br />Carbon Monoxide (CO) <br />1 hour <br />20 ppm 35 ppm <br />8 hour <br />9.0 ppm 9 ppm <br />Nitrogen Dioxide (NO2) <br />1 hour <br />0.18 ppm 100 ppb <br />Annual Arithmetic Mean <br />0.030 ppm 53 ppb <br />Sulfur Dioxide (SO2) <br />1 hour <br />0.25 ppm 75 ppb <br />24 hour <br />0.04 ppm 0.14 ppm <br />Respirable Particulate Matter <br />24 hour <br />50 leg /mac 150 µg /1113 <br />(PM10) <br />Annual Arithmetic Mean <br />20 11g /1113 — <br />Fine Particulate Matter (PM2.5) <br />24 hour <br />— 35 leg /1113 <br />Annual Arithmetic Mean <br />12 µg /m3 15.0 leg /m3 <br />Sulfates <br />24 hour <br />25 pg /1113 — <br />Lead (Pb) <br />30 day average <br />1.5 pg /m3 — <br />Calendar quarter <br />— 1.5 pg /1113 <br />Rolling 3 -Month Average <br />— 0.15 "g/m3 <br />Hydrogen Sulfide <br />1 hour <br />0.03 ppm --- <br />Vinyl Chloride <br />24 hour <br />0.01 ppm — <br />Notes: <br />a The California Ambient Air Quality <br />Standards (CAAQS) for 03, CO, S02 (1 -hour and 24- hour), NO2, <br />PM10, and PM2.5 are values not to <br />be exceeded. All other California <br />standards shown are values not to <br />be equaled or exceeded. <br />b'rhe NAAQS, other than 03 and those <br />based on annual averages, are not to be exceeded more than <br />once a year. The 03 standard is attained <br />when the expected number of days per calendar year with <br />maximum hourly average concentrations <br />above the standard is equal to or less than 1. <br />c ppm = parts per million by volume; <br />ppb = parts per billion; jig/1113 = micrograms per cubic meter. <br />Source: ARB 2012. <br />Table 3 -3. Federal and State Attainment Status for Orange County Portion South Coast Air Basin <br />Pollutants <br />Federal Classification <br />State Classification <br />03 (1 -hour standard) <br />— <br />Nonattainment, Extreme <br />O3 (8 -hour standard) <br />Nonattainment, Extreme <br />Nonattainment, Extreme <br />PM10 <br />Nonattainment, Serious <br />Nonattainment <br />PM2.5 <br />Nonattainment <br />Nonattainment <br />CO <br />Attainnent /Maintenance <br />Attainment <br />NO2 <br />Nonattainnent <br />Nonattainment <br />S02 <br />Attainment <br />Attainment <br />Source: ARB 2012. <br />The Academy Charter High School <br />Initial Study /Mitigated Negative Declaration 3-17 2 <br />IrJ June une 2 2 01.12 <br />•�ca <br />