Our Geoprobe 7822DT, Track mounted unit, has direct push and hollow stem auger drilling capabilities.  This unit measures 6 feet wide and requires approximately 14 feet of overhead clearance to operate.  In addition to direct push and dual tube sampling capabilities, the auger head can turn 4-¼” hollow stem augers, which gives us the ability to install NR141 compliant 2” monitoring wells, as well as 6-¼” hollow stem augers for 3” and 4” well installation.