Ground Penetrating Radar (GPR)

Excel operates a number of GPR instruments with center frequencies ranging from 50 to 2600 MHz; all equipped with a GPS antenna continuously collecting real time data. GPR instruments operate by transmitting a radio signal or series of signals into the ground, then measuring the strength and travel-time required for the return of the reflected signals. The data recorded provides information about changing ground characteristics with depth. Depth of investigation and data resolution are highly dependent on the site conditions and antenna frequency being used. Excel has recently performed hazard assessment surveys for Defence Construction Canada to help identify buried features such as fuel storage tanks and storage bunkers.




  • Acquiring high resolution cross sections of natural geologic, hydro-geologic, and anomalous conditions
  • Detecting changes in soil horizon and bedrock features
  • Detecting locations of utilities, rebar in concrete, voids, buried wastes and drums
  • Mapping contaminant plumes


  • Non-intrusive
  • Easy to operate
  • Excellent lateral and vertical resolution with profiling
  • Continuous display of data along a traverse
  • Provides real-time data for rapid result turnaround