Cal. Sts. & Hy. Code § 19168
If the certifying officer certifies that the petition bears the signatures of owners of taxable property within the district or, if applicable, the proposed zone representing 60 percent or more of the total assessed value of all taxable property therein, the petition shall be filed, and the board of supervisors shall fix a time for hearing the petition and the protests of interested parties, and shall cause a notice of the filing of the petition and the time set for the hearing to be published pursuant to Section 6061 of the Government Code in a newspaper designated by said board as most likely to give notice to the inhabitants of the district and, if applicable, the proposed zone. If there is no such newspaper, copies of the notice shall be posted in three conspicuous places in the territory included in the district or, if applicable, the proposed zone, for three weeks prior to the date fixed for hearing the petition. The notice shall contain the text of said petition, but the names of the signers of the petition need not be published.
If the certifying officer's certificate shows that any petition requesting the establishment of a temporary zone does not bear the required number of signatures, the request for the formation of a temporary zone shall be denied, without prejudice to the filing of a new petition therefor.
In such event, or if the petition does not request the establishment of a temporary zone, and the certifying officer's certificate shows that the petition does not bear the signatures of owners of taxable property representing 60 percent or more of the total assessed valuation of all taxable property within the existing highway lighting district, the petition shall be denied.
Ca. Sts. and High. Code § 19168