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Gregg Drilling & Testing, Inc.→GEOTECHNICAL AND ENVIRONMENTAL SITE INVESTIGATION SERVICES

Contact Us|The Rock Shop|Email Sign-Up

950 Howe Road,Martinez,California94553|Phone (925) 313-5800|Fax (925) 313-0302|Email info@greggdrilling.com 2726 Walnut Avenue,Signal Hill,California90755|Phone (562) 427-6899|Fax (562) 427-3314|Email info@greggdrilling.com

About Us|Services|Equipment|Safety|Education|Resources|News

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Gregg Drilling & Testing, Inc. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Learn More →

Delivering High Quality Environmental, Geotechnical and Marine Drilling & Testing Solutions for Twenty Five Years

Services Geotechnical Services Inland & Near-Shore Marine Services Environmental Services Exploration & Mining Services Specialty Services Well Services

What's New 6th Edition of Guide to Cone Penetration Testing now available Thursday, January 15, 2015 Gregg T-shirt photo contest entry: Kenna Kirsnis Wednesday, October 29, 2014 Gregg T-shirts around the world! Thursday, October 23, 2014 Gregg Drilling & Testing Canada Ltd. - New Canadian division serving the Oil Sands Industry and Western Canada Monday, August 25, 2014 Seismic CPT Webinar Announced! Wednesday, July 30, 2014 CPR/First Aid Training & Holiday Mixer Event Wednesday, October 23, 2013 CPT'14 Las Vegas, NV Wednesday, August 07, 2013 Gregg Drilling Featured in OC Register - Lake Elsinore Drilling Monday, July 08, 2013 CPR Training & Open House Event Thursday, April 25, 2013 US Builders Review Article Wednesday, January 09, 2013 Gregg Introduces Free Webinar Series Saturday, September 01, 2012 New Subsea Robotic Geotechnical Site Investigation Company Formed Friday, June 29, 2012 2012 Geotechnical CPT Short Course Scheduled Wednesday, February 01, 2012

Equipment Air Rotary Auger Drill Cone Penetration Testing Direct Push Marine Mud Rotary

950 Howe Road,Martinez,California94553|Phone (925) 313-5800|Fax (925) 313-0302|Email info@greggdrilling.com

2726 Walnut Avenue,Signal Hill,California90755|Phone (562) 427-6899|Fax (562) 427-3314|Email info@greggdrilling.com

About Us Company Profile Project Profiles Personnel Partners & Sharing Licenses & Insurance Career Opportunities

Services Geotechnical ServicesInland & Near-Shore Marine ServicesEnvironmental ServicesExploration & Mining ServicesSpecialty ServicesWell Services

Equipment Air Rotary2Auger Drill9Cone Penetration Testing9Diamond Coring1Difficult Access11Direct Push5Drilling2Gregg Canada5Limited Access8Marine3Mud Rotary9Specialty4Track Mounted9Truck Mounted12

Education Webinars Seminars Speciality Seminars On Site Training Field Demonstrations Events & Tradeshows

Resources Technical Guides Technical Methodology Docs & Datasheets Groundwater Depth Table California Permits Technical References DMG-SP117 Links Glossary Reference Aids

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