NJ ISRA Compliance Guide: The Industrial Site Recovery Act Process

New Jersey's Industrial Site Recovery Act (ISRA, N.J.S.A. 13:1K-6 et seq.) requires owners and operators of certain industrial businesses to investigate and, if needed, clean up their property before it is sold, closed, or transferred. If you are buying, selling, or financing an industrial site in New Jersey, ISRA can set the timeline and the budget for the whole deal.

This guide is general information, not legal advice. Confirm applicability with an environmental attorney and a Licensed Site Remediation Professional (LSRP), and check current requirements in N.J.A.C. 7:26B with NJDEP.

1. Does ISRA apply? The "industrial establishment" test

A property is an industrial establishment under ISRA when both are true:

• The business on site operates under a NAICS code listed in the ISRA rules (N.J.A.C. 7:26B, Appendix C) — common examples include manufacturing, chemical, metal finishing, printing, dry cleaning plants, and certain wholesale and transportation uses.
• The operation generated, manufactured, refined, transported, treated, stored, handled, or disposed of hazardous substances or wastes on site after December 31, 1983.

If it is unclear whether a business qualifies, the owner or operator can request an Applicability Determination from NJDEP.

2. Triggering events

ISRA obligations begin with a "closing, terminating, or transferring" of the establishment, such as:

• Sale of the real property or the business operating on it.
• Many changes in controlling ownership, including certain stock and partnership transfers.
• Ceasing operations or relocating out of the site.
• Bankruptcy-related transfers, foreclosure-adjacent transfers, and lease terminations by the operator.

Some transactions are excluded, such as certain corporate reorganizations not substantially affecting ownership. Your attorney should confirm before relying on an exclusion.

3. The ISRA process, step by step

Want dates and rough costs for your deal? Try the ISRA timeline & cost planner. Need an LSRP? Search our NJ cleanup professional directory. For a site-specific estimate, get a cleanup cost & timeline quote.

1. File the General Information Notice (GIN) with NJDEP within 5 calendar days after the triggering event (for example, signing an agreement of sale or publicly announcing a closure).
2. Retain an LSRP. Under the Site Remediation Reform Act (SRRA), remediation is overseen by an LSRP rather than direct NJDEP case management.
3. Preliminary Assessment (PA). The LSRP reviews site history and current conditions to identify areas of concern (tanks, drains, storage areas, historic fill, spills).
4. Site Investigation (SI). Soil, groundwater, and sometimes vapor sampling at each area of concern to determine whether contamination exceeds NJDEP standards.
5. Remedial Investigation and Remedial Action where contamination is found — delineating its extent, then excavation, treatment, engineering controls (such as caps), or institutional controls (such as deed notices).
6. Response Action Outcome (RAO). The LSRP issues the RAO once the site, or a defined area, meets remediation standards. Sites with engineering or institutional controls need a Remedial Action Permit and ongoing biennial certifications.

NJDEP mandatory and regulatory timeframes apply throughout. Missing them can put a case into direct oversight, which adds cost and removes much of the party's control over the schedule.

4. Closing before cleanup: the Remediation Certification

ISRA does not require a site to be clean before a sale closes. Most deals close under a Remediation Certification, in which the responsible party certifies it will complete remediation and establishes a remediation funding source (for example a trust fund, letter of credit, surety bond, or line of credit) sized to the LSRP's cost estimate. NJDEP also charges an annual surcharge on most funding sources.

5. Exemptions and shortcuts

• De Minimis Quantity Exemption (DMQ): for establishments that handled hazardous substances only below set thresholds.
• Regulated underground storage tank exemption: where the only hazardous substances were in regulated UST systems managed under the UST rules.
• Remediation in Progress Waiver: when the site is already being remediated under another NJDEP program.
• Area of Concern Waiver: to exclude areas previously remediated and documented.
• Limited Conveyance / Limited Site: for leases or partial transfers of part of a larger site.

6. ISRA and the Phase 1 ESA

A Phase 1 ESA and an ISRA Preliminary Assessment overlap heavily but are not the same. The Phase 1 (ASTM E1527-21) protects the buyer's federal liability defenses and satisfies lenders; the PA satisfies NJDEP rules. For ISRA sites, scope both at once with the same consultant. See our Phase 1 ESA cost guide for pricing.

7. Deal checklist for buyers

1. Confirm the seller's or tenant's NAICS code and hazardous substance history.
2. Check NJDEP records for open cases, prior GIN filings, and existing RAOs on or near the parcel.
3. Require evidence of GIN filing and LSRP retention in the purchase agreement.
4. Allocate ISRA responsibility, cost caps, and escrow or funding source terms in the contract.
5. Budget for remedial action, permits, and long-term monitoring if controls are likely.

EnviroForma can screen a New Jersey parcel against state case records before you sign — start a property screen or search NJ state cases.

Frequently asked questions