37 Tex. Admin. Code § 147.22
The rules of evidence as applied in nonjury civil cases in the district courts of this state shall apply. When necessary to ascertain facts not reasonably susceptible of proof under these rules, evidence not admissible thereunder may be admitted, except where precluded by statute, if it is of a type commonly relied upon by reasonably prudent persons in the conduct of their affairs.
Source Note:The provisions of this §147.22 adopted to be effective January 1, 1976; amended to be effective October 31, 1980, 5 TexReg 4178.