Chapter 2 Maximum Peak 8-Hour Indicator by Air Basin Table 2-18 AIR BASIN 2004 Maximum Peak 8-Hour Indicator in parts per million Number of Days in 2004 above 8-Hour Standard State National Great Basin Valleys Air Basin Incomplete Data Incomplete Data Incomplete Data Lake County Air Basin Incomplete Data Incomplete Data Incomplete Data Lake Tahoe Air Basin 1.9 0 0 Mojave Desert Air Basin 2.0 0 0 Mountain Counties Air Basin 4.8 0 0 North Central Coast Air Basin 1.2 0 0 North Coast Air Basin 2.0 0 0 Northeast Plateau Air Basin Incomplete Data Incomplete Data Incomplete Data Sacramento Valley Air Basin 4.2 0 0 Salton Sea Air Basin 10.5 1 1 San Diego Air Basin 4.6 0 0 San Francisco Bay Area Air Basin 4.0 0 0 San Joaquin Valley Air Basin 4.2 0 0 South Central Coast Air Basin 2.4 0 0 South Coast Air Basin 8.3 0 0