Cal. Food & Agr. Code § 11503
The commissioner of any county may adopt regulations applicable in his or her county which are supplemental to those of the director which govern the conduct of pest control operations and records and reports of those operations. The regulations may include provisions pertaining to any matter related to the accomplishment of the purposes of Section 11737. The provisions of Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code shall be followed insofar as practicable in the adoption of the regulations by the commissioner. The regulations shall be filed with the director who shall compile them.
Each regulation of the commissioner shall be approved by the director before it becomes operative. The director, in his or her review of the commissioner's regulations, shall consider, but not be limited to considering, the necessity, authority, clarity, and consistency of the regulations, as these terms are defined in Section 11349 of the Government Code.
Ca. Food and Agric. Code § 11503