Anacapa / San Francisco / Santa Clara / Los Angeles / Santa Barbara / San Nicolas / San Diego / Santa Rosa / Fresno / Sacramento / San Miguel / Santa Cruz / /
NaturalFeature
San Nicolas island / Mojave Desert / Channel Islands / Tehachapi Mountains / Alpine / Northern Channel Islands / San Joaquin Valley / Anacapa island / San Clemente island / Coachella Valley / Wells Valley / /
Person
Catalina Islands / San Clemente Islands / Trinity / /
Product
Sonoma / /
ProvinceOrState
Mendocino / Calaveras / Western Placer Counties Central San Bernardino County / Santa Cruz / Southwestern San Bernardino / Western Riverside / Mono / Santa Barbara County / Tulare / Eastern Placer County / Western Kern Counties Central Riverside County Sacramento / Siskiyou / Yolo / Eastern Solano / Inyo / Western Nevada County / Butte County / San Diego County / Far Eastern San Bernardino / Eastern El Dorado County / Orange / San Luis Obispo County / San Benito / Alpine / Eastern Kern County / Del Norte / Nevada County / Lassen / Madera / Fresno / Mariposa / Modoc / Eastern Nevada County / Monterey / San Diego County Northeastern Los Angeles County Amador / Northern Sonoma / Sierra Nevada Eastern Kern County / Western El Dorado / Humboldt / Kings / Merced / California Far Eastern Riverside / Ventura County / Tuolumne / /
Region
Western Nevada / Western Mojave Desert / Eastern Nevada / /
Correspondence: [removed]Enclosure 1 -- Updated Recommendations for Area Designations under the Federal 8-Hour Ozone Standard