If after designation any arbitrator resigns, dies, withdraws, refuses or is unable to perform his or her duties, the board shall rescind the appointment and shall fill the vacancy in the same manner as the original appointment (as prescribed in section 1 of this subchapter) and the matter shall be heard in its entirety by the new arbitrator.
N.J. Admin. Code § 12:105-3.3
See: 27 New Jersey Register 4126(a), 28 New Jersey Register 270(b).