N.J. Stat. § 58:10-23.11g1
The provisions of P.L. 1976, c. 141 (C. 58:10-23.11 et seq.), or any other law, rule or regulation to the contrary notwithstanding, the liability of any person performing hazardous discharge mitigation or cleanup services in accordance with procedures established pursuant to State or federal law and a surety who issues a bid, performance or payment bond for such person for such services for any injury to a person or property caused by or related to these services shall be limited to acts or omissions of the person or surety during the course of performing these services which can be shown, based on a preponderance of the evidence, to have been negligent. For the purposes of this act, the demonstration that acts or omissions of a person or surety performing mitigation or cleanup services were in accordance with generally accepted practice and state-of-the-art scientific knowledge, and utilized the best technology reasonably available to the person at the time the mitigation or cleanup services were performed shall create a rebuttable presumption that the acts or omissions were not negligent.
N.J.S. § 58:10-23.11g1