The commissioner shall approve or disapprove the master plan or any amendment thereto within 90 days of receipt thereof. The commissioner may, for cause, disapprove the master plan or any amendment thereto. In the event that the commissioner fails to take action on the master plan or any amendment thereto within the 90-day period specified herein, then the master plan or amendment, as appropriate, shall be deemed to have been approved.
N.J.S. § 13:15B-5