California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 58995

If the director determines that it should be by referendum, the director shall establish a referendum period not to exceed 30 days. If the director determines that the referendum period so established does not provide sufficient time for the balloting, the director may extend the referendum period not more than 15 additional days. At the close of the referendum period, the director shall count and tabulate the ballots filed during the referendum period.