N.J. Stat. § 27:7-82
The payments authorized in this act shall not be construed as creating in any condemnation proceeding brought under the power of eminent domain any element of damages not in existence on the effective date of this act and such payments are to be in addition to the just compensation established in the condemnation proceedings but only to the extent that they are not otherwise included within the condemnation award. No payment or assistance shall be required to be made to any person or included as a program or project cost under P.L. 1972, c. 47 (C. 27:7-72 et seq.) if the person receives a payment required by federal or State law, or local ordinance, which is determined to have substantially the same purpose and effect as the payments authorized under this act.
N.J.S. § 27:7-82