2.       The challenge shall state in writing the reasons for the challenge.

3.       Upon receipt of such a challenge, the administrator shall notify the other parties of the challenge.  When an arbitrator has been challenged by one party, the other party or parties may agree to the acceptance of the challenge and, if there is agreement, the arbitrator shall withdraw.  The challenged arbitrator may also withdraw from office in the absence of such agreement.  In neither case does withdrawal imply acceptance of the validity of the grounds for the challenge.

Article 9

If the other party or parties do not agree to the challenge or the challenged arbitrator does not withdraw, the administrator in its sole discretion shall make the decision on the challenge.

Replacement of an Arbitrator