Underground Utility Locating Services

Trinity Subsurface Engineering, LLC is your source for underground utility locating services throughout North East, Mid-atlantic, and south central regions.

Pennsylvania • Delaware • New Jersey • Maryland • New York • Washington DC • Virginia• texas • oklahoma

New Jersey
New York
Washington DC

Underground Utility Services To Keep Your Projects On Track

Private Utility Locating

Only a portion of underground utilities will be marked out by Call 811. Trinity Subsurface Engineering LLC will fill the gap, using geophysical equipment like ground penetrating radar.

Concrete Scanning & Imaging

Trinity Subsurface Engineering LLC has the technical experience to cut and core concrete with precision. Rebar, conduit, and post tension cables can be detected and marked out.

Vacuum Excavation

Trinity Subsurface Engineering LLC excavates utilities using vacuum technology. We 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.

CAD & Utility mapping

Trinity Subsurface Engineering LLC can design an accurate model of the subsurface utilities to be permanently stored on your computer for future project use. 

Hydro jetting & Pipe Repair

Trinity Subsurface Engineering can prevent leaks, cracks, erosion, and pipe bursts at the source with jetting, a cost-effective and trenchless pipe cleaning method. 

Inflow & Infiltration

Inflow and infiltration occurs anytime excess water enters into sewer pipes from
stormwater and groundwater. Address leaks to generate savings. 

sectional point repair

Sectional point line repair is a trenchless solution for damages contained to isolated intrusions, cracking or corrosion. Optimize the performance by replacing weakest points.

Our customers know we Get It Done Right

J.G. Crozier Contractors, Inc.
"I have used Trinity Subsurface Engineering numerous times for GPR, underground utility location services. Most recently I had them jet & televise a sanitary sewer system. They are always punctual, professional and very knowledgeable. They are also price competitive. I would definitely use them again."
Todd B. | Project Manager | ★★★★★
Nickle Electrical Companies
"I would highly recommend working with this company. Very professional and responsive."
Dan Peralta | Project Manager | ★★★★★
Veterans Watchmaker Initiative
"The gentlemen from Trinity Subsurface were helpful and professional. We were glad to host them. Many thanks for the pictures and field sketches which are very helpful."
Sam Cannan | Chairman | ★★★★★
Earth Engineering Incorporated
"As always, Trinity Subsurface came through. The team is awesome. The field employees were super helpful in helping us get ourselves orientated within the structure. "
Timothy B. Carlin, P.E. | Assistant Director, Geotechnical Investigations Division | ★★★★★


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 Company

Utility Locating Services Where You Need Them

Trinity Subsurface Engineering can provide underground utility locating services for your project site throughout the North East, Mid-Atlantic, and South Central regions.

Do you have any drawings you would like to share?

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.