(3) unless a longer period has been ordered by a court, the person responsible for conducting the remediation has, prior to the date of enactment of P.L. 2009, c. 60(C.58:10C-1 et al.), failed to complete the remedial investigation of the entire contaminated site 10 years after the discovery of a discharge at the site and has failed to complete the remedial investigation of the entire contaminated site within five years after the date of enactment of P.L. 2009, c. 60(C.58:10C-1 et al.). If a person responsible for conducting a remediation fails to meet the conditions established in paragraph (3) of this subsection, or a requirement established pursuant to subsection a. of section 1 of P.L. 2013, c. 283(C.58:10C-27.1), the department shall not undertake direct oversight of the contaminated site if the person demonstrates, and the department finds, that:
(1) the person was unable to meet the applicable timeframe because the person was unable to enter the contaminated site because the person does not own the property, and the person took all appropriate and timely action pursuant to section 40 of P.L. 1993, c.139 (C.58:10B-16) prior to the applicable timeframe; or(2) the contaminated site is subject to federal oversight, the person has made timely submissions to the department, and the person was unable to meet the applicable timeframe due to the performance of additional review by the department pursuant to subsection c. of section 21 of P.L. 2009, c. 60(C.58:10C-21). As used in this subsection, "enforcement action" means an administrative order, a notice of civil administrative penalty, or a court order.