(1) Parties may take testimony by deposition on oral examination (deposition) or written questions (interrogatories) for use as evidence in the administrative hearing.

(2) Parties must depose persons in the same manner, and before the same officers, authorized by the Washington civil rules for superior court, unless otherwise agreed in writing by the parties.

(3) Witnesses may be subpoenaed to attend a deposition or produce documents.

(4) Parties may only depose a commissioner, the director, deputy director, or an assistant director if they apply to the presiding officer and show good cause that circumstances prevent the statements or depositions of other staff members from revealing the information, evidence, or details needed.

(5) Unless otherwise ordered, the person being deposed may be examined about any matter to the same extent that the Washington civil rules for superior court allow.