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5.0 Environmental Analysis 5.5 Air Quality <br />Avion Project SEIR <br />Page 5.5-3 <br />Table 5.5-1 <br />Ambient Air Quality Standards <br />Pollutant Averaging <br />Time <br />California Standards1 National Standards2 <br />Concentration3 Method4 Primary3,5 Secondary3,6 Method7 <br />Ozone8 <br />1 Hour 0.09 ppm <br />(180 µg/m3) Ultraviolet <br />Photometry <br />– Same as <br />Primary <br />Standard <br />Ultraviolet <br />Photometry 8 Hour 0.07 ppm <br />(137 µg/m3) <br />0.070 ppm <br />(137 µg/m3) <br />Respirable <br />Particulate <br />Matter <br />(PM10)9 <br />24 Hour 50 µg/m3 Gravimetric or <br />Beta <br />Attenuation <br />150 µg/m3 Same as <br />Primary <br />Standard <br />Inertial Separation <br />and Gravimetric <br />Analysis <br />Annual <br />Arithmetic <br />Mean <br />20 µg/m3 – <br />Fine <br />Particulate <br />Matter <br />(PM2.5)9 <br />24 Hour No Separate State Standard 35 µg/m3 <br />Same as <br />Primary <br />Standard Inertial Separation <br />and Gravimetric <br />Analysis Annual <br />Arithmetic <br />Mean <br />12 µg/m3 <br />Gravimetric or <br />Beta <br />Attenuation <br />12 µg/m3 15 µg/m3 <br />Carbon <br />Monoxide <br />(CO) <br />1 Hour 20 ppm <br />(23 mg/m3) <br />Non-dispersive <br />Infrared <br />Photometry <br />35 ppm <br />(40 mg/m3) – <br />Non-dispersive <br />Infrared <br />Photometry <br />8 Hour 9.0 ppm <br />(10 mg/m3) <br />9 ppm <br />(10 mg/m3) – <br />8 Hour <br />(Lake <br />Tahoe) <br />6 ppm <br />(7 mg/m3) – – <br />Nitrogen <br />Dioxide <br />(NO2)10 <br />1 Hour 0.18 ppm <br />(339 µg/m3) Gas Phase <br />Chemi- <br />luminescence <br />100 ppb <br />(188 µg/m3) – <br />Gas Phase Chemi- <br />luminescence Annual <br />Arithmetic <br />Mean <br />0.030 ppm <br />(57 µg/m3) <br />0.053 ppm <br />(100 µg/m3) <br />Same as <br />Primary <br />Standard <br />Sulfur <br />Dioxide <br />(SO2)11 <br />1 Hour 0.25 ppm <br />(655 µg/m3) <br />Ultraviolet <br />Fluorescence <br />75 ppb <br />(196 µg/m3) – <br />Ultraviolet <br />Fluorescence; <br />Spectro- <br />photometry <br />(Pararosaniline <br />Method) <br />3 Hour – – 0.5 ppm <br />(1,300 µg/m3) <br />24 Hour 0.04 ppm <br />(105 µg/m3) <br />0.14 ppm <br /> (for certain <br />areas)11 <br />– <br />Annual <br />Arithmetic <br />Mean <br />– <br />0.030 ppm <br /> (for certain <br />areas)11 <br />– <br />Lead12,13 <br />30 Day <br />Average 1.5 µg/m3 <br />Atomic <br />Absorption <br />– – <br />High Volume <br />Sampler and <br />Atomic Absorption <br />Calendar <br />Quarter – <br />1.5 µg/m3 (for <br />certain <br />areas)12 Same as <br />Primary <br />Standard Rolling <br />3-Month <br />Average <br />– 0.15 µg/m3 <br />Visibility <br />Reducing <br />Particles14 <br />8 Hour See footnote 14 <br />Beta <br />Attenuation and <br />Transmittance <br />through Filter <br />Tape <br />No National Standards Sulfates 24 Hour 25 µg/m3 Ion Chroma- <br />tography <br />Hydrogen <br />Sulfide 1 Hour 0.03 ppm <br />(42 µg/m3) <br />Ultraviolet <br />Fluorescence <br />Vinyl <br />Chloride12 24 Hour 0.01 ppm <br />(26 µg/m3) <br />Gas Chroma- <br />tography <br />