GPR (Ground Penetrating Radar)

GPR is a safe, non-invasive geophysical investigation method for looking underground to locate subsurface features.  The technology detects metallic, non-metallic, and natural strata; underground utilities; storage tanks; rubber; sink-holes; and voids.

GPR Utility Detection:

Conventional methods cannot be used to determine the location of plastic gas lines.  Ground Penetrating Radar (GPR) is the recommended alternative.  A Noggin (GPR) subsurface imaging system, or similar, is used to determine the location of the non-metallic utilities and conduits.  The Noggin (GPR) can also determine the location of other underground voids and anomalies.  GPR is, however,  limited in its ability to determine the location of the voids.  Soil type, object size, and material contrast are factors in the success of GPR detection.  Metals are seen better than plastics.  Clean, non-metallic sands, and non-conductive soils provide the most-suitable substrates for detection.  Conductive soils such as clay, especially wet clay, are poor. In good conditions GPR can see to ten or twenty feet.  In poor conditions GPR may see only a few inches.

Please Click on Recent Projects for a plan/photograph and brief description of some past representative projects.