Geoprobe™ Percussion-Probing Units

Model 6600 and DT 54 Track Rig

ETTL's Geoprobe™ units are compact, hydraulically powered percussion-probing machines. The 6600 is truck mounted and can be swiftly folded out and operated, using static force and a percussion hammer to rapidly advance small-diameter sampling tools into the ground for the collection of soil cores, groundwater samples and soil gas samples. Both have the ability to hammer through surface pavements using concrete bits. They can be switched to the percussion mode and its hammer used for rapid probing. The design of these units permits taking groundwater samples without the need for installing a permanent monitoring well.

Both Geoprobe models typically are used to advance sampling tools into the ground in the 0 to 30 ft range. The Model 6600 has a pulling power of 20 tons with a stroke length of 66 inches. The probing tools not only produce small diameter holes that minimize surface disturbance, but no cuttings are created during the sampling process. Tools can be interchanged at any time. Continuous soil samples can be taken which stay in clear plastic sleeves for transport to the soil lab, or can be opened for field inspection.

While both of our Geoprobe models can install 1" diameter temporary monitoring wells, the Model 6600 has the highly useful advantage of being able to install 2" diameter temporary or permanent monitoring wells. And though both models are equipped to do probing, the 6600 is additionally equipped with a built-in rotary spindle; and it can switch from probing to hollow stem auger (or back again) in less than 30 seconds.

2005 DT 54 Track Rig: Its capabilities include direct push continuous sampling technology for soil depths to 30 feet. The rig width is 4 feet and the length 7.7 feet. The DT54 weighs 3,700 lbs. with a down force of 20,000 lbs. and retraction force of 27,000 lbs.

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