Each party shall pay the expenses of presenting its own case and the expenses and fees of its member of the arbitration panel. The expenses of witnesses shall be paid by the party producing them. The fees and traveling expense of a neutral chairperson appointed under WAC 391-55-210 (1) or (3), along with any costs for lists of arbitrators and for a recording of the proceedings, shall be shared equally between the parties. The fees and traveling expense of a neutral chairperson appointed under WAC 391-55-210(2), along with the costs of tapes for a tape recording of the proceedings but not a transcription or the services of a court reporter, shall be paid by the commission.