(a) The rules of evidence applicable to judicial proceedings are not binding in an arbitration hearing.
(b) An arbitration board may:
(1) receive in evidence any documentary evidence or other information the board considers relevant;
(2) administer oaths; and
(3) issue subpoenas to require:
(A) the attendance and testimony of witnesses; and
(B) the production of books, records, and other evidence relevant to an issue presented to the board for determination.