Gov. Code, § 6505.5

If a separate agency or entity is created by the agreement, the agreement shall designate the treasurer of one of the contracting parties, or in lieu thereof, the county treasurer of a county in which one of the contracting parties is situated, or a certified public accountant to be the depositary and have custody of all the money of the agency or entity, from whatever source.

The treasurer or certified public accountant so designated shall do all of the following:

(a) Receive and receipt for all money of the agency or entity and place it in the treasury of the treasurer so designated to the credit of the agency or entity.

(b) Be responsible, upon his or her official bond, for the safekeeping and disbursement of all agency or entity money so held by him or her.

(c) Pay, when due, out of money of the agency or entity held by him or her, all sums payable on outstanding bonds and coupons of the agency or entity.

(d) Pay any other sums due from the agency or entity from agency or entity money, or any portion thereof, only upon warrants of the public officer performing the functions of auditor or controller who has been designated by the agreement.

(e) Verify and report in writing on the first day of July, October, January, and April of each year to the agency or entity and to the contracting parties to the agreement the amount of money he or she holds for the agency or entity, the amount of receipts since his or her last report, and the amount paid out since his or her last report.

The officer performing the functions of auditor or controller shall be of the same public agency as the treasurer designated as depositary pursuant to this section. However, where a certified public accountant has been designated as treasurer of the entity, the auditor of one of the contracting parties or of a county in which one of the contracting parties is located shall be designated as auditor of the entity. The auditor shall draw warrants to pay demands against the agency or entity when the demands have been approved by any person authorized to so approve in the agreement creating the agency or entity.

The governing body of the same public entity as the treasurer and auditor specified pursuant to this section shall determine charges to be made against the agency or entity for the services of the treasurer and auditor. However, where a certified public accountant has been designated as treasurer, the governing body of the same public entity as the auditor specified pursuant to this section shall determine charges to be made against the agency or entity for the services of the auditor.