EM and GPR locating in Queens, the Bronx, Manhattan, Brooklyn and Long Island.
Trinity Subsurface locates private underground utilities for contractors, engineers and facility owners in all five boroughs and across Nassau and Suffolk counties. Our technicians find the electric, water, gas, storm, sewer and communication lines that 811 does not mark, using electromagnetic (EM) equipment and ground penetrating radar (GPR), mark them in paint and flags, and deliver a field sketch within 24 hours.
New York requires excavators to notify 811 before digging, but utility owners mark only their own facilities, usually up to the meter or property line. In New York City and on Long Island, more than a century of construction stacks private lines on top of public ones: building services, private electric and lighting, abandoned conduit and storm connections under sidewalks, plazas and campuses. They are private, and only a private locator will mark them.
Our team relies on a variety of technologies and methods to fully examine your site. We use electromagnetic scanning, ground penetrating radar and more to get the best info on subsurface utilities and underground infrastructure.
Our team offers multiple services to support your projects on top of utility locating and concrete scanning. Ask us about additional utility investigation services we can offer for further support beyond GPR locating and scanning.
We aim to provide ongoing support for your current and upcoming projects. Whether you're just starting design or running into unexpected utilities during construction, we'll investigate and assist with any step of your project.
No. Utility owners mark their own facilities, usually up to the meter or property line. Building services and lines past that point belong to the property owner and need a private locator.
Call (855) 387-4648 with your site address and dates, and the scheduling team will confirm availability and timing for your project.
Queens, the Bronx, Manhattan, Brooklyn, Staten Island, Nassau and Suffolk counties, and Westchester County.
Rated 4.9 out of 5 from 223 Google reviews.
“Third time working with Trinity. Expertise, determination to find the problem and solution, resulting project summaries all outstanding. Highly recommend Trinity!”
Nancy T., Google review
“Their quote was provided promptly, and the technician was punctual, professional, and well-prepared. The work was clearly explained throughout the process.”
Frank B., Google review
“Trinity Subsurface is consistent in their high level of service, responsiveness, and quality of work.”
Craig H., Google review
