Cal. FAC § 12982

The director and the commissioner of each county under the direction and supervision of the director, shall enforce the provisions of this article and the regulations adopted pursuant to it. The local health officer may assist the director and the commissioner in the enforcement of the provisions of this article and any regulations adopted pursuant to it. The local health officer shall investigate any condition where a health hazard from pesticide use exists, and shall take necessary action, in cooperation with the commissioner, to abate the condition. The local health officer may call upon the State Department of Health Services for assistance pursuant to Section 105210 of the Health and Safety Code.