Okla. Stat. tit. 59, § 475.4

Each professional engineer member of the Board shall be a citizen of the United States and resident of this state. The member shall have been engaged in the lawful practice of engineering as a professional engineer for at least ten (10) years. The member shall have been in responsible charge of engineering projects for at least five (5) years and shall be a licensed professional engineer in this state. Not more than two professional engineer board members shall have the same primary area of competence designated in the Board records. A minimum of one professional engineer board member shall be a Professional Structural Engineer. Each professional surveyor member of the Board shall be a citizen of the United States and a resident of this state. The member shall have been engaged in the lawful practice of surveying as a professional surveyor for at least ten (10) years. The member shall have been in responsible charge of surveying projects for at least five (5) years and shall be a licensed professional surveyor in this state.