N.J. Stat. Ann. § 40A:4-61

All receipts derived from special assessments on property specially benefited by any local improvements shall be segregated by the municipality and kept in a separate fund to be known as an "assessment revenue fund." They shall be applied only to the payment of that part of the cost of any such improvements which has been specially assessed on property specially benefited or of any bonds or notes issued to finance such part of the cost of any such improvements until all such bonds or notes shall have been paid.