GPRS Subsurface GPR Scanning

GPRS Locates Underground Utilities Prior to Excavation - Brecksville, OH

Ground Penetrating Radar Systems was recently called out to a project at the Marathon Terminal in Brecksville, Ohio. The scope of work was to locate any underground utilities around a valve to be removed. The contractor needed to excavate a 20ft perimeter around the valve. By using GPR and Radio Detection, many utilities were located such as two pipelines, electrical, water, and two unknown pipes. GPRS located the utilities then painted and flagged them on the surface with depth indications. These utilities would have been hit if they were not located! GPR and Radio Detection is an accurate and effective way of locating underground utilities, underground storage tanks, and voids.

GPRS GSI Scanning Concrete
The image above shows all of the utilities marked out in the area of concern.   

For more information on how GPRS, Inc. can help you on your next project, please contact Micah Stair at 330-639-8933 or by email at 
We also have the capabilities of locating conduits, rebar, and post tension cables in a concrete slab.

Below is a list including further details of the equipment used.
GPRS GSI Scanning Utility Lines   GSI 1600 GPR Equipment


Ground Penetrating Radar (GPR)

  • GSSI SIR – 3000
    • GPRS uses a Geophysical Scan Systems Inc. (GSSI) SIR-3000 Radar unit. This is the most advanced GPR available. It allows for onsite interpretation, as well as stores data for later processing. This equipment is self-calibrating, allowing more precise depth and location measurements.
  • 1600 MHz Antenna
    • This antenna allows data collection to a maximum depth of approximately 18”, depending on concrete conditions.

Radio-frequency Detection System (RD)

    • RD 7000+ 
      • This is an electro-magnetic tone locating device manufactured by Radio Detection. This specific model 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 utility.

Ground Radar Scanning
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