Gregg Drilling, LLC (Gregg) has been conducting geotechnical and environmental site investigations for over 35 years. We have always strived to leave as little impact at a site as possible and make it a requirement to always restore a site to its original condition prior to terminating drilling operations.
We are one of the largest site investigation providers in the Western US offering a full suite of drilling, cone penetration testing, sampling, remediation and well services. In addition, our experienced personnel can maintain a high productivity rate saving time and money to the overall project.
Hollow Stem Auger Services
Gregg Drilling offers a number of specialized tests for geotechnical investigations including SPT energy calibration, pressuremeter testing, vane shear testing and dilatometer testing.
Well Installation Services
With over 30 years experience drilling in California and surrounding states, Gregg Drilling can handle any size project from Consumer water wells, to Agricultural wells to Industrial/Commercial wells.
Advanced Site Characterization
Gregg Drilling has created a High Resolution Site Characterization (HRSC) division to provide the most experienced personal and equipment in the industry to support our clients with their projects.
In-situ Remediation Services
Exploration & Mining Services
Gregg Drilling conducts specialized geotechnical drilling to extract samples from a site for exploration/mining purposes.
Near Shore Marine Services
Gregg Drilling is a leading expert in marine drilling and geotechnical investigation. We own and operate an extensive array of over water platforms and marine testing equipment allowing us to provide tailored investigation services in shallow near shore waters, lakes and reservoirs.
Need additional services?
If something isn’t listed here, it doesn’t always mean we don’t know how to help you. Please reach out to one of our project managers, many have operated the equipment themselves and can help craft a site investigation plan that will utilize the best equipment for the job.