BGS, Inc. operates two Geoprobe® hydraulic drill rigs and one Simco Earthprobe 200 truck-mounted hydraulic drill rig.
The 7720DT rig is a rubber track-mounted unit and offers a high / low speed auger head capable of 3,000 ft-lb of torque. This rig has a rotary-percussion hammer capable of 35,000 lbs. of down-force and 47,000 lbs. retraction force. The 7720DT is equipped with a hydraulic winch capable of 2,350 lbs. of pull-out force and also has a hydraulic liner extruder to extract stuck acetate sampling sleeves. This machine is also equipped with a 25-gallon capacity fresh water tank for remote site work. The machine weighs 6,850 lbs and creates a surface load of only 3.7 lbs/in2. Maneuvering this machine across a site is accomplished using a remote control.
The 66DT rig also offers a high / low speed auger head capable of 560 ft-lb of torque. This rig has a rotary-percussion hammer capable of 32,000 lbs. of down-force and 42,000 lbs. of retraction force. The 66DT rig is a more compact unit and can fit into tighter areas. This rig can easily be positioned into areas using hand controls, and the rig footprint is approximately the size of a standard sheet of plywood (4'X8').
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BGS, Inc. operates a trailer-mounted vacuum excavator, which is capable of wet / dry vacuum applications. This unit has a spoils tank which has a capacity of 250-gallons and saddle tanks which hold up to 100-gallons of fresh water. The vacuum blower offers up to 15 inches of mercury on the high vacuum setting.
BGS, Inc. also offers preclearing services using an air spade, which is the application of compressed air to the subsurface to loosen packed soil for vacuum extraction.
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Ground Penetrating Radar (GPR) is a powerful tool which has applications for many industries. GPR is a common technical instrument used for infrastructure investigation, archaeological research, forensics, geophysics, mining, and utility reconnaissance. GPR has been a developing geophysical method for non-destructive investigations for 30 years. High-frequency electronic waves are transmitted into the ground and are then reflected back to the surface. The electrical property contrasts are displayed on the GPR computer screen in real time. Interpretations from the readings are then used to make estimates of targets which include material type, voids, target position, and depth.
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