| Company | Location | Certifications | License # |
|---|---|---|---|
| Appalachia Hydrogeologic & Env Consulting LLC | Bridgewater Twp, NJ | Subsurface Evaluation | US608993 |
| Aw Drew Environmental LLC | Bound Brook Boro, NJ | ClosureSubsurface Evaluation | US700234 |
| Bohler Engineering Nj LLC | Warren Twp, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST System | US769785 |
| Cardinal Environmental Consulting LLC | Bernards Twp, NJ | Subsurface Evaluation | US700395 |
| Environmental Compliance Monitoring Inc | Hillsborough Twp, NJ | Subsurface Evaluation | US00671 |
| Independence Constructors Inc | Bridgewater Twp, NJ | ClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | US00291 |
| Labella Associates Dpc | Somerville Boro, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | US1143623 |
| Long Hill Contracting LLC | Hillsborough Twp, NJ | HHO Closure | US767617 |
| Nicholas Longo Construction Inc | Bridgewater Twp, NJ | Closure | US00464 |
| Paulus Sokolowski & Sartor LLC | Warren Twp, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | US00378 |
| Prestige Environmental Inc | Somerville Boro, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | US00633 |
| Princeton Somerset Group Inc | Hillsborough Twp, NJ | ClosureSubsurface EvaluationTank Testing | US00815 |
| Rtp Environmental Associates Inc | Green Brook Twp, NJ | Subsurface Evaluation | US207418 |
| Simple Solutions Environmental | Somerville Boro, NJ | Subsurface Evaluation | US785439 |
| Statewide Environmental Services LLC | Bridgewater Twp, NJ | ClosureInstallation-Entire UST System | US438507 |
| Summit Drilling LLC | Bridgewater Twp, NJ | Closure | US1012044 |
| The Vertex Companies, LLC | Branchburg Twp, NJ | ClosureSubsurface Evaluation | US1008403 |
| Tr Weniger Inc | Green Brook Twp, NJ | ClosureInstallation-Entire UST System | US00795 |
| Verdantas LLC | Somerville Boro, NJ | ClosureSubsurface Evaluation | US00175 |
| Vollers Excavating and Construction Inc | Branchburg Twp, NJ | ClosureSubsurface Evaluation | US667188 |
| Whitestone Associates Inc | Warren Twp, NJ | ClosureSubsurface Evaluation | US00757 |
21 companies in the NJDEP UST certification program are based in Somerset County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.
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