The department may award a maintenance contract under this section as a purchase of service under the State Purchasing and General Services Act, Government Code, Title 10, Subtitle D, if the department:     
       (1) estimates the contract will involve an amount for which formal bids for the purchase of service are not required under rules adopted by the Texas Comptroller of Public Accounts under Government Code, Chapter 2155, Subchapter C; and      
       (2) determines that it would be impractical to use the letting procedures described in this subchapter.      
     Source Note:        The provisions of this §9.21 adopted to be effective January 8, 2004, 29 TexReg 229; amended to be effective November 17, 2011, 36 TexReg 7679