Okla. Stat. tit. 74, § 74-5045.1: Substate planning districts - Hiring registered

professional engineers.

Each substate planning district within the State of Oklahoma is

authorized to hire or contract for the services of one or more

registered professional engineers to provide services for the

governmental entities which are members of the substate planning

district. No substate planning district shall provide technical and

professional engineering, architectural, planning or land surveying

service to any person, entity or governmental subdivision of the

State of Oklahoma unless the person, entity or governmental

subdivision is a member of the substate planning district providing

the services.