2009 PM10 Air Quality Table "Table 2-14, Page 2-25" AIR BASIN 2007 Maximum 24-Hour Concentration in micrograms/cubic meter 2007 Maximum Annual Average of Quarters in micrograms/cubic meter State National State Great Basin Valleys Air Basin 8338.0 10020.0 14.6 Lake County Air Basin 19.0 * 8.9 Lake Tahoe Air Basin 55.6 * * Mojave Desert Air Basin 339.0 358.0 36.0 Mountain Counties Air Basin 116.0 127.0 16.3 North Central Coast Air Basin 51.0 49.0 25.4 North Coast Air Basin 53.8 51.2 20.6 Northeast Plateau Air Basin 189.0 205.0 4.6 Sacramento Valley Air Basin 119.0 119.0 28.1 Salton Sea Air Basin 296.0 291.0 65.5 San Diego Air Basin 392.0 394.0 58.5 San Francisco Bay Area Air Basin 77.8 72.9 25.6 San Joaquin Valley Air Basin 135.0 172.1 48.5 South Central Coast Air Basin 399.7 320.3 33.9 South Coast Air Basin 1155.0 1212.0 72.2 * - Data provided may be incomplete or may not meet the reporting criteria required for the related standard.