Gov. Code, § 56325

There is hereby continued in existence in each county a local agency formation commission. Except as otherwise provided in this chapter, the commission shall consist of members appointed as follows:

(a) Two appointed by the board of supervisors from their own membership. The board of supervisors shall appoint a third supervisor who shall be an alternate member of the commission. The alternate member may serve and vote in place of any supervisor on the commission who is absent or who disqualifies himself or herself from participating in a meeting of the commission.

If the office of a regular county member becomes vacant, the alternate member may serve and vote in place of the former regular county member until the appointment and qualification of a regular county member to fill the vacancy.

(b) Two appointed by the cities in the county, each of whom shall be a mayor or council member, appointed by the city selection committee. The city selection committee shall also appoint one alternate member who shall also be a mayor or council member and shall be appointed and serve pursuant to Section 56335. The city selection committee is encouraged to appoint members to fairly represent the diversity of the cities in the county, with respect to population and geography.

(c) Two presiding officers or members of legislative bodies of independent special districts appointed by the independent special district selection committee pursuant to Section 56332. The independent special district selection committee shall also appoint a presiding officer or member of the legislative body of an independent special district as an alternate member who shall be appointed and serve pursuant to Section 56332. The independent special district selection committee is encouraged to make appointments that fairly represent the diversity of the independent special districts in the county, with respect to population and geography.

(d) One representing the general public appointed by the other members of the commission. The other members of the commission may also appoint one alternate member who shall serve pursuant to Section 56331. Appointment of the public member and alternate public member shall be subject to the affirmative vote of at least one of the members appointed by each of the other appointing authorities. Whenever a vacancy occurs in the public member or alternate public member position, the commission shall cause a notice of vacancy to be posted as provided in Section 56158. A copy of this notice shall be sent to the clerk or secretary of the legislative body of each local agency within the county. Final appointment to fill the vacancy may not be made for at least 21 days after the posting of the notice.