New Jersey Statutes Title 45. Professions and Occupations 45 § 8-44.1

a. The licensed professional land surveyor has made a reasonable attempt, as defined in this section, to notify the owner of the land and, in the case of a lease, the lessee thereof, of his desire to enter on, over and upon the owner's or lessee's land to make a land survey and, the attempt having failed, the licensed professional land surveyor has given written notice, seven days prior to the proposed entry, to the municipal police department of the municipality in which the land is located of his intention to enter, containing the names, addresses, and telephone numbers of those who propose to enter the land and the date, time, duration, and location of the proposed entry; and

b. The land or any part thereof, to which entry is sought, is not enclosed by a constructed or natural barrier which is at least 6 feet in height or is not posted with signs or notices which prohibit trespassing and contain the name and address of the owner or lessee of the land;

c. As used in this section, a “reasonable attempt” to notify an owner or lessee means: an attempt to seek acknowledgment of the owner of the land and, in the case of a lease, the lessee thereof, by certified mail, return receipt requested, the attempt to be made a second time if unsuccessful the first time and a third time if unsuccessful the second time, each attempt to be made on a separate business day.