The authority shall do all the following:
(a) Adopt an annual budget.
(b) Adopt an administrative code, by ordinance, which prescribes the powers and duties of the authority officers, the method of appointment of the authority employees, and methods, procedures, and systems of operation and management of the authority.
(c) Cause a postaudit of the financial transactions and records of the authority to be made at least annually by a certified public accountant.
(d) Do any and all things necessary to carry out the purposes of this division.
The authority may appoint a policy advisory committee.