Cal. Food & Agr. Code § 54404
For the purpose of enforcing this chapter, the director may receive complaints from producers against any processor, handler, distributor, or any agent of these persons, or from processors, handlers, distributors, or any agent of these persons against a cooperative bargaining association or any agent of an association, with respect to violations of the unfair trade practices which are specified in Section 54431.
Upon verification of the complaint, the director shall, or upon the director's own motion may, make any and all necessary investigations, examinations, or inspections of any transaction which involves a suspected violation of any provision of this chapter.
The director may thereafter take action against the processor, handler, distributor, or any agent of these persons, or the cooperative bargaining association or any agent of an association, in accordance with applicable provisions of this chapter.
Ca. Food and Agric. Code § 54404