Trinity Subsurface locates private underground utilities across South Jersey, including Camden, Gloucester, Burlington, Atlantic and Cape May counties and the Jersey Shore. We find the electric, water, gas, storm, sewer and communication lines that NJ One Call does not mark, using electromagnetic (EM) equipment and ground penetrating radar (GPR). We mark them in paint and flags and deliver a field sketch within 24 hours.

New Jersey law requires a call to NJ One Call (811) before digging. But utility operators only mark their own lines, typically up to the meter or property line. On schools, shore properties, commercial sites and campuses across South Jersey, the lines past that point are often undocumented: site lighting, private water and fire services, storm laterals, and feeds between buildings. They're private, so 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 operators mark their own facilities. Private lines on schools, commercial sites and campuses need a private locator.
Most requests are on site within three business days, often sooner. Call (609) 795-8998 and our scheduling team will tell you what's possible.
South Jersey, including Camden, Gloucester, Burlington, Atlantic and Cape May counties and the Jersey Shore, plus Central Jersey and north to Newark.