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November Geo Institute Meeting

posted Oct 14, 2016, 1:04 PM by Charles Mitchell   [ updated Oct 14, 2016, 3:44 PM ]
Join us for our November meeting where we will have a presentation on
Mapping Bedrock Fractures and Other Subsurface Conditions in Urbanized Environments Using the Multi-Channel Analysis of Surface Waves (MASW) Geophysical Method.

Mr. Richard Lee, P.G., R.GP. 
President and Principal Geophysicist 
Quantum Geophysics Division of Gannett Fleming, Inc. 

Mapping Bedrock Fractures and Other Subsurface Conditions in Urbanized Environments Using the Multi-Channel Analysis of Surface Waves (MASW) Geophysical Method 

Wednesday, November 2, 2016 

5:15 pm Cocktails – Cash Bar 
6:00 pm Dinner 
7:00 pm Presentation 
The Engineer’s Club 
11 W Mount Vernon Place 
Baltimore, Maryland 
$45 per person / $15 students 
Credit Card Payments Only – details below 

Those working on contaminated sites often need to identify subsurface conditions that control the movement of contaminants. Subsurface conditions include bedrock fractures, faults, geologic contacts, localized depressions in the top of rock, “breaks” in confining layers, and voids (karst). These conditions tend to be small and unpredictable, making them difficult to find via traditional exploratory drilling. Many sites are located in urban environments where site conditions (e.g., buried piping, fill, paved surfaces) impact the effectiveness of some geophysical methods, especially those more familiar to geologists and environmental scientists (GPR, EM, electrical resistivity). There is now a growing awareness that some "non-traditional" geophysical methods can be very effective in mapping subsurface conditions in urbanized settings, especially the multi-channel analysis of surface waves (MASW) method. 
This session will describe how MASW works (e.g., equipment, data acquisition, data processing, and analysis) and will look at several case histories. It will discuss what conditions can impact MASW (some can be mitigated, some can't), and why GPR, EM, and electrical resistivity are generally not effective in urbanized settings.

Speaker Biography
Mr. Lee received a B.S. degree in geology from Colgate University and an M.S. degree in geology from the University of Pittsburgh. He is a registered geophysicist (CA) and a professional geologist (PA). In over 35 years as a practicing geophysicist, Mr. Lee has worked closely with engineers and geologists on a variety of projects throughout all 50 states and Puerto Rico. Mr. Lee specializes in applying geophysics to the evaluation of karst terrain, the characterization of hazardous waste sites, as well as the tasks of identifying seepage, locating water supply (sand and gravel, and fractured aquifers), and evaluating infrastructure (pipelines, roads, dams, levees, tunnels, railroads, wind and solar farms, airports, maritime harbors).

Payment Procedure
We now accept registrations by credit card payments only. Please complete the two-step registration and payment process by 5pm, Thursday, October 27 at:

Contact if you have any questions or need assistance.

Thank You to our Geo-Institute Corporate Sponsors