Tri-County Drilling, Inc.
Tri-County Drilling, Inc.
Tri-County Drilling, Inc.
Tri-County Drilling, Inc.
Tri-County Drilling, Inc.

Company Profile

Tri-County Drilling, Inc. was founded by Sheryl Peterson in 1987 to provide environmental and geotechnical drilling services to Southern California. As a woman-owned business, Tri-County Drilling is a certified WBE/DBE Contractor and has served as a Subcontractor on numerous government projects. Since its inception, Tri-County Drilling has rapidly expanded its scope of available services to provide state-of-the-art equipment and trained personnel for our clients. Our personnel have completed the 40-hour OSHA training course and refresher courses as well as numerous seminars and classes in rig safety and innovative techniques. Medical monitoring is also provided annually. Our drilling capabilities include:

  • Hollow Stem Auger Drilling
  • Mud Rotary, Air Percussion and Air Rotary Drilling, ODEX Casing Advance
  • HQ and NX Diamond Core Drilling by Wireline and conventional methods (single and dual tube) using air or fluid circulation mediums
  • Continuous Sampling, Drive Sampling, Shelby Tube Sampling, Standard Penetration Tests
  • Wireline Single and Straddle Packer Testing
  • Well Destruction, Grouting
  • Permeability Testing, Aquifer/Pump Testing
  • Installation of Monitoring Wells and Water Wells
  • Well Development and Testing by Pumping, Surge Blocking, Bailing and Air Lift
  • Limited Access Coring, Air Percussion, Hollow Stem Auger, and Angle Drilling
  • Geoprobe Direct Push/Probe Drilling and Sampling
  • Horizontal Water Wells and Borings
  • Off Road Drilling with All Terrain Rig

    Our inventory of drilling rigs feature hollow stem auger capabilities to 300 feet and mud rotary drilling to depths of up to 1600 feet. Our typical project profile includes:

  • Thermacouple™ Ground Source Earth Energy System
  • Domestic and Commercial Water Wells, Vertical and Horizontal
  • Installation and Development of Hazardous Materials Monitoring Wells
  • Installation of Deep Inclinometer Casing in Hard Rock Conditions
  • Geotechnical Borings, Rock Coring, Excavation of Test Trenches
  • Dual Tube, Casing Advance Using Air Percussion Methods
  • Permeability Testing, Aquifer Testing, Percolation Tests
  • Steep Terrain and Limited Access Hollow Stem Auger, Mud Rotary and Air Percussion Drilling
  • On-site Transport and Storage of Hazardous Materials in Liquid and/or Solid Form
  • Installation of Cathodic Protection Wells by Air Rotary or Mud Rotary

    We believe that our diverse experience, drilling capabilities, trained personnel, and modern equipment make Tri-County Drilling, Inc. uniquely qualified to provide unparalleled customer service as well as the latest technology in the field of environmental/geotechnical drilling.

    If you would to request additional information or a quote, please use our Contact Form.