California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 5026

(a) The director may overrule a local agency's ordinance or regulation where that ordinance or regulation would prevent or inhibit an eradication effort. The director may act under this section only when the Governor has declared a state of emergency relating to the eradication effort and the effect of the local ordinance or regulation will be to threaten agriculture on a statewide basis, to materially interfere with the ability of the director or the commissioner to eradicate a pest, or where the pest is of such a nature that it could rapidly spread to other areas beyond the boundaries of the local agency.

(b) “Local agency” means any public agency, other than a state agency, board, or commission and includes, but is not limited to, cities (chartered or otherwise), counties, and special districts.