In carrying out any of the provisions of this title, the secretary, the director, county administrators, hearing examiners, or other duly authorized officers of the department or authority shall have power to subpoena witnesses, administer oaths, take testimony and compel the production of such papers, books, records and documents as they may deem relevant to the performance of their duties. Subpoenas issued under this power shall be under RCW
43.20A.605.