Sec. 289.105. PURCHASING AND ACCOUNTING PROCEDURES. (a) The commission may prescribe the method and manner for making purchases and expenditures by the district. (b) The commission shall prescribe: (1) all accounting and control procedures; and (2) the method of purchasing necessary supplies, materials, and equipment. Added by Acts 2005, 79th Leg., Ch. 1367 (H.B. 2463), Sec. 1, eff. June 18, 2005.