• For gas-heated homes in traditionally oil-heated neighborhoods.
• Magnetic tank detection technique.
• Tanks are opened and drained of remaining oil.
• While tank closure is still required, this is the least expensive way of limiting future liability.

Tank Location

Ground penetrating radar (commonly called GPR) is a geophysical method that has been developed over the past thirty years for shallow, high-resolution, subsurface investigations of the earth. GPR uses high frequency pulsed electromagnetic waves (generally 10 MHz to 1,000 MHz) to acquire subsurface information. Energy is propagated downward into the ground and is reflected back to the surface from boundaries at which there are electrical property contrasts. GPR is a method that is commonly used for environmental, engineering, archeological, and other shallow investigations.

GPR units can penetrate soil at depths of up to eight meters (24'), but this depth may be greatly reduced due to site-specific conditions. Signal penetration decreases with increased soil conductivity. Conductive materials attenuate the GPR signal to greatly reduce the depth penetration achieved. Penetration is the greatest in unsaturated sands and fine gravels. Clayey, highly saline or saturated soils, areas covered by steal reinforced concrete, foundry slag, or other highly conductive materials greatly reduces GPR penetration.