| Company | Location | Certifications | Credential Score | License # |
|---|---|---|---|---|
| Ads Environmental Inc | Phillipsburg Town, NJ | ClosureSubsurface Evaluation | 63 | US436514 |
| Brockerhoff Environmental Services LLC | Lopatcong Twp, NJ | ClosureSubsurface Evaluation | 63 | US443635 |
| Eikon Planning & Design LLC | Hackettstown Town, NJ | ClosureSubsurface Evaluation | 63 | US00085 |
| Enviro-Claims Inc | Hackettstown Town, NJ | ClosureSubsurface Evaluation | 63 | US451143 |
| F.J. Environmental LLC | Hackettstown Town, NJ | ClosureInstallation-Entire UST System | 63 | US763799 |
| Fuel Rite Petroleum Inc | Blairstown Twp, NJ | ClosureInstall Waste OilSubsurface EvaluationTank Testing Waste Oil | 82 | US479792 |
| Site Remediation Group LLC | Hackettstown Town, NJ | ClosureSubsurface Evaluation | 63 | US623273 |
7 companies in the NJDEP UST certification program are based in Warren County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.
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