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GROUNDWATER RESOURCES ASSOCIATION
o f C a l i f o r n i a
Presents a 90 Minute GRACast
Boring Logs - What's Important and What's Not:
A Scientific Viewpoint
What? Conference Call and PowerPoint Presentation, with Q&A
When? Tuesday, February 23, 2010 from 12:00 pm – 1:30 pm PST
Who? Dr. W. Richard Laton, Associate Professor of Hydrogeology,
Dept. of Geological Sciences, California State University, Fullerton
Cost? $25 GRA Member, $35 Non-Member
 Details: This will be a call-in lecture where participants telephone in and listen to Dr. Laton give his presentation while following along on your own computer with a copy of the PowerPoint Presentation (provided to sign ups prior to the event). Participants will be able to email questions to Dr. Laton throughout the lecture which will be read and answered as time permits during the 90-minute session.
There are many uses for boring/well logs in the groundwater industry, including specifying location, groundwater levels, chemistry, and production capabilities. Beyond these usual uses, however, boring/well log information may be used for hydrostratigraphic interpretation, groundwater modeling, subsurface investigations, and general background information. Through careful logging and data collection, drilling contractors, engineers, and scientists can work together to share information and develop better subsurface models that will help everyone in the industry.
Key to this sharing of information industry-wide is the interpreting of well logs, which is made difficult by the simple fact that soil classification is not always uniform. While most people in the industry know how to use a Munsell chart for color, opinions differ on coarseness – gravel vs. silt vs. fine sand and the like. Further complicating matters is the variety of drilling methods employed throughout the country.
Dr. Laton's lecture will provide a refresher course on proper classification techniques, emphasizing the use of standardized classification methods. Specific topics will include:
• Definitions of Logs (Boring, Drillers, Water Well, E-Logs)
• Basic Information to Include on Logs
• Examples of Bad Logs, Better Logs, Detailed Logs
• Software for Constructing Logs
• Drilling Techniques
• Unified Soil Classification System / Grading vs. Sorting
• GPS Locating your Boring / Well Site
• Case Histories including computer modeled cross sections using log data and 3-D block diagrams
Who Should Call In: This conference call presentation is ideal for entry level and experienced geologists, hydrogeologists, soils engineers, modelers, environmental scientists, project managers, drilling contractors, regulators, and anyone else involved with the preparation, interpretation, or use of boring and well logs.
 Presenter Bio: Richard Laton, Ph.D., PG, CPG, is an active member in GRA and the National Groundwater Association (NGWA) where he is an AGWSE Board member. In 2009 he was NGWA’s distinguished McEllhiney Lecturer, traveling the country presenting information on proper techniques for boring and well logs. He is an associate professor of hydrogeology in the Department of Geological Sciences at California State University, Fullerton and is passionate about teaching students practical knowledge they can apply to real-world circumstances. He teaches classes ranging from hydrogeology, environmental sampling, and groundwater modeling to oceanography and geology. Laton has also taught at the Western Michigan University Field Camp for the past 15 years. Topics covered during these 50-hour, weeklong intensive courses include drilling techniques and sampling, aquifer testing, and remediation technologies.
Register For This Event >> |
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