Cal. Health & Safety Code § 9091

(a) At the hearing, the board of trustees shall hear and consider any protests to the formation of a zone pursuant to this chapter. The board of trustees shall terminate the proceedings, if at the conclusion of the hearing, it determines either of the following:
1. (1) More than 50 percent of the total number of voters residing within the proposed zone have filed and not withdrawn written objections to the formation.
2. (2) Property owners who own more than 50 percent of the assessed value of all taxable property within the proposed zone have filed written and not withdrawn objections to the formation.
(b) If the board of trustees determines that the written objections have been filed and not withdrawn by 50 percent or less of those voters or property owners, then the board of trustees may proceed to form the zone.
(c) If the resolution or petition for formation of a zone proposes that the zone use special taxes, special benefit assessments, fees for property-related services, or general obligation bonds to finance its purposes, the board of trustees shall proceed according to law. If the voters or property owners do not approve those funding methods, the zone shall not be formed.