Additionally, the Department shall not be required to make purchases pursuant to a statewide contract for materials, supplies, and services necessary for the efficient and economical operation of revenue-generating, Department-operated facilities, including those made to maintain or improve guest perception of quality and service; provided, that the State Purchasing Director shall review and audit all uses of the exemptions provided in this subsection biannually.
Okla. Stat. tit. 74, § 85.12