(1) Subpoenas shall be issued and enforced, and witness fees paid, as provided in RCW 34.05.446.

(2) Every subpoena shall identify the party causing issuance of the subpoena and shall state the name of the agency and the title of the proceeding and shall command the person to whom it is directed to attend and give testimony or produce designated books, documents, or things under his or her control at the time and place set for the hearing.

(3) A subpoena may be served by any suitable person over eighteen years of age, by exhibiting and reading it to the witness, or by giving him or her a copy thereof, or by leaving such copy at the place of his or her abode. When service is made by any other person than an officer authorized to serve process, proof of service shall be made by affidavit.

(4) The presiding officer, upon motion made promptly and in any event at or before the time specified in the subpoena for compliance therewith, may:

(a) Quash or modify the subpoena if it is unreasonable and oppressive; or

(b) Condition denial of the motion upon the advancement by the person in whose behalf the subpoena is issued of the reasonable cost of producing the books, papers, documents, or tangible things.

(5) No subpoena shall be issued or given effect to require the attendance and testimony of, or the production of evidence by, any member of the council or any member of the council staff. For these purposes, the council's independent consultant is deemed a member of the council staff.

(6) The council shall be responsible for paying only the witness fees of the witnesses which it subpoenas. Each subpoena shall bear the name of the party requesting or issuing the subpoena and the party responsible for paying the witness fees.