California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 74123

(a) Not later than April 1, 1987, the director shall establish a list of producers and a list of vintners who are eligible to vote on implementation of this chapter. In establishing the lists, the director may require producers, vintners, county agricultural commissioners, and others to submit the names and mailing addresses of all producers and vintners. The director also may require that the information provided include the quantity of winegrapes sold to vintners and the quantity of winegrapes processed by vintners or, in the alternative, may establish procedures for receiving the information at the time of the referendum. The request for this information shall be in writing. The information required by the director shall be filed within 30 days following receipt of the written notice.

(b) Any producer or vintner whose name does not appear on the director's lists may have his or her name included on the appropriate list by filing with the director a signed statement identifying himself or herself as a producer or vintner. Failure to be on the appropriate list does not exempt any producer or vintner from paying assessments under this chapter.