Underground Utility Locating Services

Trinity Subsurface Engineering, LLC is your source for underground utility locating services throughout Eastern Pennsylvania, New Jersey, Delaware, and Maryland.

Pennsylvania • Delaware • New Jersey • Maryland

New Jersey

Underground Utility Services To Keep Your Projects On Track

Private Utility Locating

Underground utilities are present at nearly every project site. Only a portion of them will be marked out by Call 811. Trinity Subsurface Engineering LLC will fill the gap to locate all underground utilities using geophysical equipment like ground penetrating radar.

Concrete Scanning & Imaging

When you need to core or cut concrete, Trinity Subsurface Engineering has the experience and technologies to provide data about what’s underneath the surface. rebar, conduit, and post tension cables can be detected and marked out.

Vacuum Excavation

Underground Utility Data can be critical, which is why we excavate utilities using air vacuum technology. Safely excavating over existing utilities, we can collect critical information such as depth, size, material, and condition of existing underground utilities.

Subsurface Utility Engineering

Trinity Subsurface Engineering LLC works with engineering and surveying companies to ensure utilities are depicted on civil drawing in accordance with CI/ASCE 38-02 quality levels and standards.

Video Pipe Inspection

Trinity Subsurface Engineering LLC can video inspect sanitary and storm sewer pipes from 4″ through 72″ in diameter. We are NASSCO Certified and can provide reports or documentation in almost any desired format. 

Pipe Leak & Cable Fault Detection

When pipes start leaking and electrical systems break, Trinity Subsurface Engineering LLC has the solutions to test utility systems for integrity and continuity, often pinpointing the location of the defect.

Utility Locating Company

Meet The Leadership Team That Gets It Done Right

Gregory Finkle

Gregory Finkle, P.E.


Gregory started Trinity Subsurface Engineering, LLC after serving 10 years in the private utility locating industry. Greg has a passion for solving complex problems for our clients.

Sean Warner, Operations Manager

Sean Warner

Operations Manager

Sean has over 7 Years of private utility locating experience on commercial and industrial sites that includes ground penetrating radar, video pipe inspection, and concrete scanning.


P.J. Cossman

Territory Manager

P.J. is the regional manager for our Northern PA regional area and has over 8 years of ground penetrating radar, concrete imaging radar, and video pipe inspection experience.


Commitment to People

Not only the dedicated and skilled workforce at Trinity, but the people we partner with. We learned a long time ago that individual projects come and go, but it’s the people behind them that make it awesome!

Quality Focus

We focus on quality over sales because we feel that a great quality service will sell itself. We put our effort into providing great service. Our formula is pretty simple. We’ll be there when we say we will and we’ll do what we say we’ll do.


We believe our integrity, quality, safety, and customer service all lend part to being truly professional. We’re not going to sugar-coat our results, and we’ll never over promise and under deliver on your project. 

Utility Locating Services Where You Need Them

Trinity Subsurface Engineering can provide underground utility locating services for your project site throughout the Pennsylvania, Delaware, and New Jersey Tri-Sate area. 

Do you have any drawings you would like to share?

  • Request a proposal for our underground utility services now.

Request a proposal for our underground utility services now.

Use this form to get a proposal for our underground utility services. We’ll review your project and quickly provide you with a formal written quote based on the estimated amount of time we need to complete the work. 

Or Call Us (855) 387-4648

With decades of experience the engineers and technicians at Trinity have the industry insight to provide quality utility locating services. We understand the needs of engineers, contractors, construction managers and owners.