40 CFR § 27.18 - Authority of the presiding officer.
(a) The presiding officer shall conduct a fair and impartial hearing, avoid delay, maintain order, and assure that a record of the proceeding is made.
(1) Set and change the date, time, and place of the hearing upon reasonable notice to the parties;
(2) Continue or recess the hearing in whole or in part for a reasonable period of time;
(3) Hold conferences to identify or simplify the issues, or to consider other matters that may aid in the expeditious disposition of the proceeding;
(4) Administer oaths and affirmations;
(5) Issue subpoenas requiring the attendance of witnesses and the production of documents at depositions or at hearings;
(6) Rule on motions and other procedural matters;
(7) Regulate the scope and timing of discovery;
(8) Regulate the course of the hearing and the conduct of representatives and parties;
(9) Examine witnesses;
(10) Receive, rule on, exclude, or limit evidence;
(11) Upon motion of a party, take official notice of facts;
(12) Upon motion of a party, decide cases, in whole or in part, by summary judgment where there is no disputed issue of material fact;
(13) Conduct any conference, argument, or hearing on motions in person or by telephone; and