AEG: GeoPhysics, Non-destructive testing, and Highway Investigations

Announcement from the BWH Section of the Association of Environmental &
Engineering Geologists
Date: Wed., April 14, 2010
SECTION MEETING Baltimore MD – Washington DC – Harrisburg PA

Timothy D. Bechtel, Ph.D., P.G.
Tim Bechtel grew up on the Rockdale Run Formation, with a sinkhole in the backyard of his boyhood home. He has a B.Sc. from Haverford College (where he majored in geology at Bryn Mawr College), and M.Sc. (Rock Mechanics) and Ph.D. (Geophysics) degrees from Brown University. Following several years working as a geophysicist for engineering firms in Boston, MA and Harrisburg, PA, Tim was a founding principal, in 1992, of Enviroscan, Inc. – performing land and marine geophysical investigations and geophysical logging all over the world in support of geotechnical environmental, hydrological, archaeological, and law enforcement investigations. Tim formerly taught geophysics at Drexel University, and is now on the faculty of both the University of Pennsylvania, and Franklin and Marshall College.
TOPIC: GeoPhysics, Non-destructive testing, and Highway Investigations
Geophysics is the application of physical principles to making subsurface measurements or images by penetrating the ground with different forms of energy rather than a drill rig or other intrusive equipment. In that sense, it is the Earth science equivalent of medical radiology – providing advance warning or guidance to direct investigations. Within non-intrusive testing, there are important (but often blurry) distinctions between geophysics and engineering non-destructive testing (NDT), and between subsurface parametric measurements and “imaging”. Dr. Bechtel will give an overview of the various geophysics/NDT methods (i.e. the instruments and physics) and their applications (i.e. what these can be used for) that are relevant to highway projects. The main message is that geophysics alone cannot answer all questions, but in combination with other direct testing – both field and laboratory, can optimize the cost-effectiveness of any highway investigation or construction project.

DATE: Wed., April 14, 2010
TIME: 6 p.m. to 9 p.m.
LOCATION: Pastimes Café at the Hampton Inn
5311 Buckeystown Pike
Frederick, MD 21704

COST: AEG members, guests $30.00
Students $10.00

6 p.m. to 7 p.m. Social Hour (Cash Bar)
7 p.m. to 8 p.m. Dinner
8 p.m. to 9 p.m. Presentation

To reserve a seat, please email/call Ashley Hogan (see above) by Friday, April 9, 2010.
If you must cancel, please do so by Monday, April 12, because we must bill no-shows who cancel fewer than 2 days before the event.

I-270 exit 31B, hotel is located on your left.
From Baltimore: I-70 West Exit 54 (Buckeystown Pike/RT.85). Turn right onto Rt. 85 South. Stay in the right lane, go thru 5 stoplights (4th light is entrance to Francis Scott Key Mall), continue straight thru 5th light under the I-270 over pass for 1/10 mile, turn left at hotel parking lot.
From Washington: I-270 North Exit 31b onto Buckeystown Pike/RT.85, First left into the Hampton Inn parking lot.

Chair: Glenn Pyle, Exposure Assessment, Inc.
(540) 723-9618,
Vice Chair: Steve Mogilnicki, Whitman, Requardt &
Associates, (443) 224-1569,
Treasurer: Pam Patrick, Schnabel Engineering,
(301) 417-2400,
Secretary: Ashley Hogan, GeoConcepts Engineering, Inc.,
(703) 726-8030,


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