Cascade Drilling provides a full range of environmental and geotechnical drilling services. Regardless of the lithology or location, Cascade Drilling has the right equipment, experience, and specialized expertise to do the job. We offer sonic and conventional drilling technologies. Our fleet includes track and truck mounted equipment and limited access rigs for tight spaces, low overhead conditions, and over-water work allowing us to access almost any drill site.

Our Services Include:
Drilling
GEOTECHNICA
DRILLING
ENVIRONMENTAL DRILLING & SAMPLING

TerraTherm implemented ISTD technology utilizing 907 heater wells to heat the subsurface to the boiling point of water. The thermal treatment zone covered an area of approximately 3.2 acres, making it the largest ISTD project in the world to date. Shallow groundwater required the installation of a barrier wall and partial dewatering prior to heating. Implementation challenges related to the scale of the project were solved and published (ref. Heron et al 2015 GWMR paper). Most heater borings were installed using direct-push technology, saving time and money, and reducing the waste disposal activities. TerraTherm was able to remove approximately 30,000 pounds of contaminant mass from the subsurface and achieved the remedial soil concentration goal of 1 mg/kg after approximately 238 days of operations.