Wallowa Mtn Loop Road Base Sampling

We have our own drill rigs to get the work done.

SK Geotechnical has three fully equipped drill rigs making us the largest hollow-stem auger drilling company in Montana. We provide dependable, competitive geotechnical and environmental drilling services. Drilling services are provided throughout Montana, Wyoming, South Dakota, Oregon, Washington, North Dakota, and Idaho.

Drill Rigs

  • CME 75 High Torque
  • CME 1050 All-Terrain
  • Diedrich D-120

Our Diedrich D-120 drill rig has over 18,000 foot-pounds of torque and our CME 1050 has over 19,000 foot-pounds of torque, making these two rigs the largest, privately owned, hollow-stem drill rigs in Montana. More torque allows us to drill deeper, faster, and provide more detailed subsurface soil, bedrock, and groundwater information for the project.

Full Range of Capabilities

Our drill rigs are capable of the following drilling techniques and applications.

  • Hollow-stem auger borings
  • Environmental monitoring well and piezometer installation
  • Standard penetration tests
  • Thin-walled and California tube sampling
  • Hazardous site drilling
  • Wireline rock coring, HQ and NQ
  • Rotary drilling and casing advancement
  • Slope inclinometer installation/monitoring
  • Power auger borings
  • Portable steam cleaning of sampling equipment
  • Portable mud tank to recycle drilling fluids

Our crews have a broad understanding of drilling procedures and specifications, including applicable American Society for Testing and Materials (ASTM), Occupational Safety and Health Administration (OSHA), Environmental Protection Agency (EPA), and various state requirements for projects involving landfills, tank removals, environmental site assessment, and all types of construction projects.

Members of our drill crews receive numerous certifications and training, including Hazwoper, Railroad, MSHA, DOT, C-Stop, Loss Prevention Safety, and site-specific safety training.


Going to Sun Road Drilling

CME 1050 Drill Rig