Each party shall pay the expenses of presenting its own case and the expenses and fees of its arbitration panel member, if any. The expenses of witnesses must be paid by the party producing them. The agency shall pay the salary and expenses of a staff member assigned under WAC 391-65-070, but the agency shall not pay any costs for recording or transcription of proceedings or any other expenses of the proceedings. The parties shall pay the fees and expenses of a dispute resolution panel member selected under WAC 391-65-090, as provided in WAC 391-75-020.