Cal. Food & Agr. Code § 79521
In the fifth year of operation of this chapter, and every five years thereafter, the secretary shall hold a hearing to determine whether the operation of this chapter should be continued. If the secretary finds after the hearing that a substantial question exists among eligible producers regarding whether the operation of this chapter should be continued, the secretary shall submit the chapter to a reapproval referendum. If a reapproval referendum is required, the operation of this chapter shall be continued in effect if the secretary finds that a majority of the eligible producers voting in the referendum voted in favor of continuing this chapter. No bond or security shall be required for a referendum pursuant to this section.
Ca. Food and Agric. Code § 79521