Using competitive sealed proposals to award scientific service contracts is the procurement process set forth under Tex. Transp. Code ch. 223, subch. D.

TxDOT awards a scientific service contract to the technical expert that possesses the required qualifications to perform the work at fair and reasonable cost to TxDOT. TxDOT may use competitive sealed proposals to procure scientific, appraisal, right of way acquisition, and landscape architectural services.

43 TAC §9.82