Cal. Pub. Util. Code § 170013

(a) The board of directors shall govern the authority.
(b) The board of directors shall establish policies for the operation of the authority. The board of directors shall provide for the implementation of those policies which are the responsibility of the authority’s chief executive officer.
(c) All members of the board of directors shall exercise their independent judgment on behalf of the interests of the residents, property owners, and the public within San Diego County as a whole in furthering the purposes and intent of this division. The members of the board of directors shall represent the interests of the public as a whole and not solely the interests of the local officials who appointed them to the board of directors.
(d) The board of directors shall have a three-member executive committee. One member of the executive committee shall be a board member selected from among those members appointed by the Mayor of the City of San Diego pursuant to subparagraph (A) of paragraph (1) of subdivision (a) of Section 170010 (category 1). One member of the executive committee shall be a board member appointed by the Chair of the Board of Supervisors of the County of San Diego pursuant to subparagraph (B) of paragraph (1) of subdivision (a) of Section 170010 (category 2). One member of the executive committee shall be a board member selected from among those members appointed pursuant to subparagraphs (C) to (F), inclusive, of paragraph (1) of subdivision (a) of Section 170010 (category 3). Additionally, members of the executive committee shall be the following:
1. (1) The chair of the authority’s board of directors pursuant to subdivision (d) of Section 170010.
2. (2) The vice chair of the authority’s board of directors, appointed from a category different than the chair.
3. (3) A third member of the board of directors appointed from a category that is not represented on the executive committee as a result of paragraphs (1) and (2).
4. (4) The members of the executive committee serving pursuant to paragraphs (2) and (3) shall each be selected to serve by a vote of the members of the board of directors.
(e) The board of directors shall appoint a seven-member audit committee consisting of four members of the board of directors and the three public members appointed pursuant to Section 170018.