N.J. Stat. Ann. § 40:37-101.5

The assessor of any municipality, in which any such park commissioners shall have acquired lands exceeding in area thirty-five per centum (35%) of the total area of the municipality, shall file with the county board of taxation, in each year, with his assessment list, a certificate that the area of the land, acquired by such park commissioners in such municipality, exceeds in the aggregate thirty-five per centum (35%) of the total area of the municipality, briefly describing the same and stating the value of the lands acquired in excess of such percentage of the total area of the municipality, with any buildings and improvements thereon, at the time they, or the respective parcels thereof, were acquired.