To complete primarily environmental, geothermal and cathodic drilling, EWI’s Springfield office started with two Geoprobe® 6620s. As business grew, they added a 7822DT. “The 7822DT has 25 percent more power, yet it still fits into our gas station sites and goes under canopies without issues,” Yoakum said. “The oscillating mast is great for uneven surfaces and …
