Table of Area Designations for State Ozone Standards

This page last reviewed November 20, 2008

Area	Designation

Lake Tahoe Air Basin	Attainment
Lake County Air Basin	Attainment
Mojave Air Basin	Nonattainment
North Central Coast Air Basin	Nonattainment
Northeast Plateau Air Basin	Attainment
Salton Sea Air Basin	Nonattainment
San Diego Air Basin	Nonattainment
San Francisco Bay Area Air Basin	Nonattainment
San Joaquin Valley Air Basin	Nonattainment
South Central Coast Air Basin	Nonattainment
South Coast Air Basin	Nonattainment

Great Valleys Air Basin
Alpine County	Unclassified
Inyo County	Unclassified
Mono County	Nonattainment

Mountain Counties Air Basin
Amador, Calaveras, El Dorado, Nevada, Placer, Mariposa, and Tuolomne Counties	Nonattainment
Plumas and Sierra Counties	Unclassified

North Coast Air Basin
Northern Sonoma County	Nonattainment-Transitional
Remainder of Basin	Attainment

Sacramento Valley Air Basin
Butte County	Nonattainment
Colusa County	Nonattainment-Transitional
Glenn County	Nonattainment-Transitional
Remainder of Basin	Nonattainment

Contact ARB for More Information

For additional general information, call 1-800-END-SMOG or contact Judy Yee, ZIP Program Manager, at (916) 327-5610 or toll free at (866) 808-0189.

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