California Code, Public Resources Code - PRC § 5784.3

(a) The term of office of each member of a board of directors who has been elected or appointed to a fixed term is four years.  Directors shall take office at noon on the first Friday in December following their election or their appointment to a fixed term.

(b) Notwithstanding subdivision (a), in the case of a district formed on or after January 1, 2002, the directors shall serve the terms determined pursuant to Section 5783.11.

(c) Any vacancy in the office of a member appointed to a board of directors shall be filled pursuant to Section 1779 of the Government Code.

(d) Any vacancy in the office of a member elected to a board of directors shall be filled pursuant to Section 1780 of the Government Code.