California Code, Government Code - GOV § 15301

(a) The El Centro and Calexico armories in Imperial County; the Culver City, Glendale, Inglewood, Long Beach 7th Street, Pomona, Sylmar, and West Los Angeles Federal Avenue armories in Los Angeles County; the San Rafael armory in Marin County; the Merced armory in Merced County; the Fullerton and Santa Ana armories in Orange County; the Roseville armory in Placer County; the Corona, Indio, and Riverside armories in Riverside County; the El Cajon, Escondido, and Vista armories in San Diego County; the Atascadero armory in San Luis Obispo County; the San Mateo armory in San Mateo County; the Santa Barbara and Santa Maria armories in Santa Barbara County; the Gilroy, San Jose Hedding Street, and Sunnyvale armories in Santa Clara County; the Santa Cruz and Watsonville armories in Santa Cruz County; the Redding armory in Shasta County; the Petaluma and Santa Rosa armories in Sonoma County; and the Oxnard and Ventura armories in Ventura County, shall be made available to these counties or a city in these counties for the purpose of providing temporary shelter for homeless persons during the period from October 15 through April 15 each year.

(b) The Adjutant General may, in the Adjutant General's sole discretion, use alternate armories as may be necessary to meet the operational needs of the Military Department.  Additionally, any county or city, including those not listed in subdivision (a), may use any armory within its jurisdiction subject to the approval of the Adjutant General.

(c) At the sole discretion of the Adjutant General, any armory deemed vacant by the Military Department may be made available throughout the year to the county or city in which that armory is located for the purpose of providing temporary shelter from hazardous weather conditions for homeless persons.

(d) Subject to appropriation in the annual Budget Act, the Adjutant General may increase or decrease the number of days of operation among all of the armories funded in any year to best meet cold weather demands as they develop.  The Adjutant General shall periodically report to the counties authorized to receive funds on the ongoing availability of remaining funded shelter days.