California Code, Health and Safety Code - HSC § 9025

(a) A board of trustees may adopt a resolution requesting the board of supervisors of the principal county to increase or decrease the number of members of the board of trustees. The resolution shall specify the number of members for which the board of trustees requests the increase or decrease.

(b) Within 60 days of receiving a resolution adopted pursuant to subdivision (a), the board of supervisors shall consider the resolution at a public hearing. The board of supervisors shall give notice of its hearing by publishing a notice pursuant to Section 6061 of the Government Code in at least one newspaper of general circulation within the jurisdiction of the district at least 10 days before the hearing. In addition, the board of supervisors shall mail the notice at least 10 days before the hearing to the district and any other person who has filed written request for notice with the clerk of the board of supervisors.

(c) At its hearing, the board of supervisors shall receive and consider any written or oral comments regarding the resolution. After receiving and considering those comments, the board of supervisors may adopt a resolution that orders the increase or decrease in the number of members of the board of trustees.

(d) If the board of supervisors adopts a resolution that orders an increase in the number of members of the board of trustees, the board of supervisors shall promptly appoint a person or persons to the board of trustees and specify their term of office, consistent with the requirements of this part. If the board of supervisors adopts a resolution that orders a decrease in the number of members of the board of trustees, the board of supervisors shall designate the trustee or trustees whose office shall be eliminated at the termination of the trustee's current term of office. Any trustee whose office is designated to be eliminated shall continue to serve until his or her term expires.