Cal. Food & Agric. Code § 32734

(a) In addition to any other provision of law, the secretary shall require inspections at least quarterly of all milk products plants that pasteurize milk or milk products, manufacture cheese, or manufacture raw milk cheese. The inspection procedures shall include sanitation inspections and pasteurization equipment controls and tests, where applicable. The procedure shall include, but is not limited to, all of the following:
1. (1) Review of all pasteurization records required pursuant to Sections 34007, 34064, and 34065.
2. (2) Inspection and testing of all pasteurization equipment to ensure its cleanliness and proper operating condition.
3. (3) Inspection of all equipment, facilities, raw milk and milk products handling practices, and surroundings to ensure adequate sanitation.
4. (4) Sampling and testing of raw products and processed milk products.
(b) The findings of all inspections, sample results, controls, and tests shall be prepared in writing by the inspector and submitted to the secretary.
(c) Milk products plants that have been approved to use Hazard Analysis Critical Control Points (HACCP) procedures under the auspices of the National Conference of Interstate Milk Shipments, or a state or federal regulatory agency, may adhere to the inspection protocol of the HACCP regulatory enforcement procedures.