Tex. Natural Resources Code § 32.015: PER DIEM AND REIMBURSEMENT.

Each citizen member of the board is entitled to receive a per diem allowance for each day spent in performing his duties and as reimbursement for actual and necessary travel expenses incurred in performing his duties the amount provided in the General Appropriations Act.

Acts 1977, 65th Leg., p. 2377, ch. 871, art. I, Sec. 1, eff. Sept. 1, 1977.