2009 Ozone Air Quality Table "Table 2-7, Page 2-17" AIR BASIN 2007 Maximum Peak Indicator in parts per million Number of Days in 2007 above the Standard State National 1-Hour 8-Hour 1-Hour 8-Hour 8-Hour Great Basin Valleys Air Basin 0.097 0.095 3 35 18 Lake County Air Basin 0.074 0.067 0 0 0 Lake Tahoe Air Basin 0.080 0.076 0 5 0 Mojave Desert Air Basin 0.135 0.120 50 124 98 Mountain Counties Air Basin 0.126 0.114 19 88 57 North Central Coast Air Basin 0.097 0.086 1 17 3 North Coast Air Basin 0.076 0.067 0 0 0 Northeast Plateau Air Basin 0.077 0.073 0 0 0 Sacramento Valley Air Basin 0.132 0.118 15 61 34 Salton Sea Air Basin 0.130 0.117 39 99 68 San Diego Air Basin 0.116 0.101 21 50 27 San Francisco Bay Area Air Basin 0.122 0.095 4 9 2 San Joaquin Valley Air Basin 0.142 0.124 69 138 110 South Central Coast Air Basin 0.113 0.101 9 76 35 South Coast Air Basin 0.159 0.140 96 127 108