Cal. Food and Agricultural Code § 52002

The director shall do all of the following: (a) Establish, by regulation, uniform standards for field crop products which shall conform as closely as possible to those which are established by the Secretary of the United States Department of Agriculture. (b) Establish inspection districts within the state. If such a district is established, inspection service may be rendered in it in accordance with regulations which are adopted by the director. (c) Establish, upon request, inspection stations at warehouses, docks, or industrial plants, which are within or without an established inspection district. The director may make special regulations which are applicable to each specific inspection station and the conditions under which it shall be established and maintained. (d) Provide through the regularly established inspection district and stations, sampling, grading, inspection, weighing, and certification service for field crop products within the state or which are shipped into or through the state. (e) Issue certificates as to quality, condition, and quantity of field crop or other agricultural products in accordance with standards which are established pursuant to this chapter, or any other standards which may be fixed by trade or contract and which do not conflict with official standards. (f) Adopt regulations for sampling, grading, inspection, weighing, and certification for the purposes of carrying out this chapter. (g) Fix fees for sampling, grading, inspection, weighing, and certification of field crop products, which fees in the aggregate shall pay the cost of services necessary to perform such sampling, grading, inspection, weighing, and certification. The director may collect such fees in advance of performing the services, but is not required to do so if in his opinion the benefits of such services would be lessened by such advance payments.