Capital Geotechnical Soil Sampling Services offers interior exploratory boring capability through the use of concrete coring tooling and hydraulic push-tube and percussion push-tube sampling tooling (stand-up Geoprobe unit).  We offer this service to Structural Forensic Engineers, Geotechnical Engineers, insurance companies, and Home Builder warranty departments.

To schedule interior borings, please contact Nicholas at nickk@capitalgeotechnical.com.  Pricing and site access information or requirements can then be discussed.  Our tooling is set up to use 3-inch diameter Shelby Tubes.  Provide the following information:

- Project site address

- Project number

- Number of interior borings

- Boring location plan?

- Project Engineer contact information

- Accessibility conditions



- Flooring present at planned coring locations (carpet, tile, wood, laminate, stained concrete)

Note that Client is responsible for pulling and re-installing carpet, or removing wood floor slats.  Interior borings must be within 50 feet of an outdoor access point (door) where the power unit can be set (exhaust).

Capital Geotechnial Services also tries to maintain a specialty tracked soil sampling rig capable of auger drilling, Shelby Tube sampling, and some SPT sampling, with a practical maximum depth capacity of 30 feet.


Capital Geotechnical Services also maintains a small truck-mounted geotechincal drilling rig capable of Shelby Tube sampling, auger drilling, SPT sampling with auto-hammer, to a practical depth capacity of 40 feet.