Hollow Stem Auger Services

Where we started: Hollow-Stem Auger Drilling

Gregg Drilling typically deploys hollow stem auger rigs when drilling to relatively shallow depths (less than 250ft) and to install monitoring wells up to 8” in diameter.

Gregg’s hollow stem auger teams are efficient and often work on geotechnical projects to collect soil samples and perform Standard Penetration Testing (SPT), or on environmental projects to sample and construct monitoring or recovery wells.


Variable Equipment:

Gregg operates both truck and track mounted auger rigs for both geotechnical and environmental site investigations. Truck mounted auger drills are perfect for metro areas whereas tracked equipment is useful for difficult access and off-road locations. We install 2″-8″ monitoring wells and conduct borings  up to 250ft in depth with our auger rigs. Many of the auger drills are equipped with automatic SPT hammers for geotechnical sampling.

Simple and inexpensive solution for shallow borings

Perfect for environmental well installations

Option for combination auger/rotary drill rigs for more versatility

Track & truck mounted equipment depending on the project location


Gregg’s vast experience drilling throughout California and exceptional safety rating provides the confidence and trust our clients have learned to value.

Gregg constantly strives to maintain one of the highest safety ratings across California. Recently Gold Shovel Certified, Gregg is constantly improving our safety program and equipment to provide our clients the highest quality service available.

Gregg’s employees have some of the most extensive safety training available and are able to work on refineries, military sites, railroads and confined spaces.

We’re ready for you

With over 35 years experience drilling in California and surrounding states, Gregg Drilling can handle any size project. We hope to demonstrate our value through quality equipment, knowledgeable and experienced personnel and our exceptional safety standards.

Additional Services