GPR Survey Prior to Gas Line Install - Charlotte, North Carolina

Ground Penetrating Radar Systems (GPRS) was hired to perform a Ground Penetrating Radar (GPR) survey at a private residence near Charlotte, NC. The purpose of this survey was help identify the location of any utilities or anomalies on site prior to trenching in a new path for a gas line. The customer had mentioned that they were not sure of any other utilities in the area, except for the existing gas line. GPRS was able to identify the location of the existing gas line, however we also were able to identify multiple utilities in the area. All the utilities that were located with GPR were able to be identified with the depth of the anomalies for the customer prior to trenching. This was a huge asset and was able to save the customer valuable time and help prevent any possible damage to unknown utilities.

We used a GSSI (Geophysical Survey Systems, LLC) Ground Penetrating Radar Unit with one specific antenna. This device transmits an electromagnetic pulse through the ground and displays the reflection on a screen for interpretation. The 400 MHz antenna was used on this specific project. This allows for GPR signal penetration 4’-6’. GPRS also used radio detection on this project as a supplement to the GPR. This device detects live power and RF signals underground, allowing us to locate electrical or telephone lines even if they are below the minimum size requirements to be detected by GPR. It also allows us to detect utilities via induction or conduction with an exposed or known surface of the conductive utility.

With the use of this equipment and the experience of GPR, we were able to help the customer avoid any conflict before excavating or digging for the new utilities being installed. As you can see, we were to help the customer identify areas with potential hazards and save them from any more potential danger of cutting through any conduits that may have live power on them or damaging any other utilities. There are many applications where ground penetrating radar may be applicable. GPRS also specializes concrete scanning. When scanning concrete, we can scan a trench prior to saw cutting, identify rebar or post tension cables prior to drilling into a slab, or even verify if a concrete block wall has grouted, un-grouted or cells with rebar reinforcement present. These are a few of the concrete GPR applications.

If you feel you may have a project that you could use our services on or may be able to benefit from GPR, you can reach out to me directly with my contact information below. More information about our services that we offer can be found on our website as well:

Curtis Hoag

Area Manager | Charlotte, NC


Ground Penetrating Radar Systems, LLC.

7450 New West Rd. Toledo, OH 43617