Spectrum Geological Services Dba Preferred

Certified oil tank sweep company · New Jersey

Certification status
Listed in the NJDEP UST certification program as of 2026-07-17 — verify current status at the official source
Certification categories
HHO ClosureHHO Subsurface Evaluation
License / registration #
US644349
Phone (from public registry)
(516) 546-1100

This profile is compiled from public registry records. It is not an endorsement, and Tank Sweep Finder has no business relationship with Spectrum Geological Services Dba Preferred unless noted. Is this your company? Claim or correct this listing — it's free.

What oil tank sweep certification means

New Jersey requires companies that test, install, or close underground storage tanks to hold NJDEP certifications by category. "Subsurface evaluation" is the certification most relevant to pre-purchase tank sweeps.

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