(1) The board chair, or his or her designee, shall have the authority to:

(a) Determine the order of presentation of evidence;

(b) Administer oaths and affirmations;

(c) Issue subpoenas pursuant to RCW 51.52.100;

(d) Rule on procedural matters, objections, and motions;

(e) Rule on motions for summary judgment;

(f) Rule on offers of proof and receive relevant evidence;

(g) Determine the total time allowed for both parties to present oral testimony and oral argument during hearing before the board;

(h) Regulate the course of the hearing and take any appropriate action necessary to maintain order during the hearing; and

(i) Permit or require oral argument or briefs and determine the time limits for submission.

(2) All board members shall have the authority to:

(a) Interrogate witnesses called by the parties in an impartial manner to develop any facts deemed necessary to fairly and adequately decide the matter; and

(b) Call additional witnesses and request additional exhibits deemed necessary to complete the record and receive such evidence subject to full opportunity for cross-examination and rebuttal by all parties.