Appointment of a Single Mediator/Arbitrator. Notwithstanding the previous provisions governing the establishment of a three-person Arbitration Board, the parties may, by mutual agreement, refer the grievance for determination by a single arbitrator. Such single arbitrator may be asked by the Parties, at date of appointment or at the arbitration hearing, to first attempt to mediate a resolution of the issue and then, if unsuccessful, to arbitrate.
