ETTL's Geoprobe™ units are compact, convenient, hydraulically powered percussion-probing machines. Both are 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. Each also has the ability to hammer through surface pavements using concrete bits. Then it 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; but the Model 6600 also can be used for actual installation of permanent monitoring wells.

Both Geoprobe models typically are used to advance sampling tools into the ground in the 0 to 30 ft range. The Model 6600, the more powerful of the two, has a pulling power of 20 tons, as compared with the 12.5 tons of the 5400. Respective stroke lengths of the two models are 66 and 54 inches, enabling both to accept a variety of probe rod lengths. 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.

See also ETTL Geotechnical Engineering Services Page

and ETTL's Subsurface Exploration Services for Landfills.

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