CALIFORNIA COUNTIES PER ZONE

ZONE I

Fresno, Kern, Kings, Madera, Mariposa, Merced, Monterey, San Luis Obispo, Santa Barbara, Tulare, and Ventura

ZONE II

Imperial, Inyo, Orange, Riverside, San Bernardino, and San Diego

ZONE III

Alameda, Alpine, Amador, Calaveras, Contra Costa, Marin, Mono, Sacramento, Solano, Stanislaus, San Benito, San Francisco, San Joaquin, San Mateo, Santa Clara, Santa Cruz, and Tuolumne

ZONE IV

Butte, Colusa, Del Norte, El Dorado, Glenn, Humboldt, Lake, Lassen, Mendocino, Modoc, Napa, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Sonoma, Sutter, Tehama, Trinity, Yolo, and Yuba

ZONE V

The County of Los Angeles only