California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 6047.13

(a) All proprietary information obtained by the board or the department from producers, processors, or any other source, including, but not limited to, the name, addresses, and assessments collected from individual producers and processors in the possession of the board or the department, including processors' lists of their producers and the assessment of individual producers, is confidential and shall not be disclosed, except when required by a court order issued upon a showing of good cause and that the information is necessary to a judicial proceeding involving this article.

(b) Disclosure, as permitted under this section, shall be conducted in camera by the court.

(c) The court shall, in the court's discretion, issue orders restraining a party or parties to a judicial proceeding involving this article from disseminating any proprietary information to the public or any other person not a party to that judicial proceeding.