Underground Storage Tank and Utility Locating – Ground Penetrating Radar (GPR)

The premier method for locating buried objects such as underground storage tanks (UST), sewer lines, water lines, and other buried objects is by performing a survey via Ground Penetrating Radar (GPR).

What is Ground Penetrating Radar (GRP)?

GPR is a radar system that is mounted onto a cart. An antenna on the cart radiates short pulses EM (high-frequency) into the ground.  When the EM energy encounters a boundary of two materials having different dielectric properties (such as a tank buried in the ground), a fraction of the energy is reflected back to the surface. A receiving antenna detects the energy and transmits it to control unit for processing and display. Essentially, the pulse cannot travel through solid metal objects so the signal bounces off and returns to the unit to notify us that an object is below. If the pulse does not come into contact with an object the unit does not receive a response. These two readings allow our technician to determine the location of a buried object from normal soil.

Can radar (GPR) go through concrete and asphalt?

A pulse from a GRP unit can go through concrete and asphalt to determine if a tank or utilities are buried.

If I find a buried oil tank or former tank grave (excavation) can Cohesion remove and test the area?

Yes, we can remove the tank and test the location to determine if the tank leaked.