Cal. Public Utilities Code - PUC § 22256. Section 22256.
By a resolution entered on its minutes, the board of supervisors of each affected county shall declare the district formed if:
(a)
A majority of the votes cast at the election is for the formation of the district.
(b)
A majority of the votes cast in a majority in number of the cities included in whole or in part in the district, counting all of the unincorporated territory in each affected county as a city for this purpose, is for the formation of the district.
