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| ... to the fourth issue of "The Gregg Geo News". The Geo News is being published to provide current information on the services we offer, equipment & technologies utilized and project experience. More...
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2008 CPT SHORT
COURSE SCHEDULE 
The CPT short courses will be presented in the Spring of 2008. Cone penetration testing applications will be illustrated through discussions covering various case histories and worked examples of both geotechnical and environmental investigations. COURSE SCHEDULE:
FRIDAY - MARCH 7, 2008
* HUNTINGTON BEACH, CALIFORNIA
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MONDAY - MARCH 17, 2008
CONCORD, CALIFORNIA
(* geotechnical course only)
Complete course details...
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Gregg Drilling & Testing
Email Updates
Get all the latest news from Gregg Drilling, register to receive email updates below:
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| Seismic Evaluation for Dumbarton and Antioch Bridges In November of 2006, Gregg Drilling was contracted to provide site investigation services for the Dumbarton and Antioch bridges located in the San Francisco Bay Area. Read more... | 
Dumbarton Bridge |
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 | Robertson's Remarks
TRANSITION ZONES IN CPT DATA by: Dr. Peter K. Robertson |
A challenge when using cone penetration testing (CPT) data for liquefaction evaluation is that the CPT data are collected at very close intervals, typically ever 5cm (2 inches), whereas all existing CPT-based liquefaction methodologies are based on average CPT results (typically averaged over several feet). Read on...
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What's New @ Gregg Drilling
| TRACK MOUNTED cme 850 DRILL RIG | Gregg has been providing hollow stem auger and mud rotary drilling on limited and difficult access sites with a track mounted CME 850 drill rig. This piece of equipment is currently located at Gregg’s Northern California office in Martinez California. As of February 2008, the Southern California office in Signal Hill, California will also have a CME 850 track mounted drill rig available for projects in Los Angeles and surrounding areas. Additional details... | 
| The CME 850 is designed for
difficult access sites. | |
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LASER INDUCED FLUORENSCENCE
(UVOST)
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LIF Screening Concept
| Gregg Drilling is pleased to announce a new element of service designed for environmental in situ testing of the soil and groundwater. UVOST is the new generation of Laser Induced Fluorescence (LIF) technology and utilizes ultraviolet induced fluorescence to detect the presence of polycyclic aromatic hydrocarbons (PAH's) in the soil. Read more... |
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