Cal. Water Code § 12878.30

The notice shall set the time and place of the hearing which shall be held not less than 10 days following the completion of publication as to all maintenance areas, and shall state that the purpose of the hearing is to confirm or modify or revise the program of work to be performed on the units for which estimates have been made pursuant to Section 12878.27, and to determine the necessity for such work and the amount of the estimates therefor.