5 U.S.C.

§ 578. Authority of the arbitrator

   An arbitrator to whom a dispute is referred under this subchapter may--

   (1) regulate the course of and conduct arbitral hearings;

   (2) administer oaths and affirmations;

   (3) compel the attendance of witnesses and production of evidence at the hearing under the provisions of section 7 of title 9 only to the extent the agency involved is otherwise authorized by law to do so; and

   (4) make awards.