Okla. Stat. tit. 2, § 2-15-147: Audits - Expenses

A. The account and books of the Trust Authority, including its

receipts, disbursements, contracts, mortgages, investments and other

matters relating to its finances, operations and affairs shall be

examined and audited not less than once each twelve (12) months by a

certified public accountant or licensed public accountant.

B. The trustees of the Trust Authority may employ a certified

public accountant or licensed public accountant for the audit and

examination and pay a reasonable fee therefor from trust funds.

C. The records, books and accounts may be examined from time to

time at the discretion of and by the State Auditor and Inspector as

provided by law. When an audit is made as provided in this

subsection, by the State Auditor and Inspector, all expenses of the

audit must be reimbursed by the Trust Authority to the State Auditor

and Inspector.