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Course Description

Subsurface Investigation Qualification

PROGRAM AREA: Geotechnical
Instructor-led Training (ILT)Instructor-led Training (ILT)
Calendar Year
Host Price
3 Days
1.8 Units
$925 Per Participant

TRAINING LEVEL: Intermediate

CLASS SIZE: Minimum: 20 Maximum: 35


This course is part of a series to develop a training and qualification/certification program for geotechnical inspectors and field personnel. The course follows FHWA guidelines and practices for subsurface investigations. Topics addressed in the course include exploration equipment and methods, safety, borehole sealing, drilling and sampling requirements and criteria, proper visual classification and description of soils and rocks, common drilling errors, and dealing with difficult subsurface site conditions. A 2-hour qualification exam is administered at the end of the course.


Upon completion of the course, participants will be able to:

  • Explain the investigation specialist's general role and duties, as well as the importance of coordination and communication with the field personnel and engineers
  • Explain the purpose of geotechnical subsurface investigations and why adequate, consistent, and quality investigations are essential
  • Identify the major components of the typical subsurface investigation plan
  • Identify common drilling rigs, uses, and components
  • Explain the importance of accurate borehole logging and documentation
  • Describe the importance of accurate groundwater investigations
  • Discuss safety issues involving operation of a drill rig


The target audience for this course includes drillers, drilling inspectors, engineers, geologists, and technicians involved in field data collection and quality assurance of subsurface investigations.

If you have questions about this NHI training, please contact NHI at or 877.558.6873.


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Host this Course

The National Highway Institute (NHI) has been accredited as an Accredited Provider by the International Association for Continuing Education and Training (IACET). In obtaining this accreditation, NHI has demonstrated that it complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Accredited Provider status, NHI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.


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