Tex. Gov't Code § 496.0515
(a) The competitive bidding contract procedures established by Chapters 2155-2158, do not apply to a contract awarded by the department for:
Added by Acts 1991, 72nd Leg., ch. 920, Sec. 1, eff. June 16, 1991.
Amended by Acts 1995, 74th Leg., ch. 321, Sec. 1.026, eff. Sept. 1, 1995;
Acts 1997, 75th Leg., ch. 165, Sec. 17.192, eff. Sept. 1, 1997.
Acts 2007, 80th Leg., R.S., Ch. 937 (H.B. 3560), Sec. 1.53, eff. September 1, 2007.