The Commissioner of the Department of Environmental Protection shall on or before September 15 of the pretax year certify that a property owner and the real property for which an exemption is claimed are qualified under the terms of this act and that a tax exemption would be in the public interest. The commissioner shall forthwith deliver such certification to the property owner and the tax assessor of the taxing district in which the real property is located.
N.J.S. § 54:4-3.67