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PROFILE
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JOSEPH A. SOPKO, Ph.D., P.E.
Director of Engineering
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Position Description
Dr. Sopko provides the overall project direction of all of Layne Christensen Company's ground freezing projects
worldwide. He is responsible for every aspect of the ground freezing engineering, including frozen soil laboratory
testing programs, engineering analyses - including computer modeling and simulation - and preparation of
construction plans and specifications. Dr. Sopko designs and implements the ground freezing monitoring and
instrumentation systems that are key points of the quality assurance programs. He provides on-site project
management during all phases of ground freezing, from preliminary subsurface exploration to freeze pipe drilling
and installation, as well as during the freezing and excavation processes.
Summary of Key Projects
Russia Wharf Tunnel – Boston, Massachusetts
Verglas Crown Pillar Excavation – Rouyn-Noranda, Quebec
Aquarius Mine Frozen Earth Barrier – Timmins, Ontario
South Bay Ocean Outfall Dropshaft – San Diego, California
Bushwick Shaft 20B – New York, New York
Summary of Previous Work Experience
Senior Engineer, Dames & Moore
Chicago, Illinois
Geotechnical/Project Engineer, Hayward Baker
Odenton, Maryland
Vice President, Geocentric-Geofreeze
Lorton, Virginia
Military Experience
Lt. Col., Missouri Air National Guard
Civil Engineering Officer
Called to active duty and served in Operation Enduring Freedom, Afghanistan
Called to active duty, Operation Desert Shield
Publications
Air Force Engineering Mission in Antarctica
Transportation News, Volume 23
April 2002
Investigative and Remedial Methods for Breach in a Frozen Shaft
Proceedings of the International Symposium on Ground Freezing and Frost Action in Soils
Brussels, 2000
The Development of Shaft Construction Methods
Conference on 120 Years of Tunneling in New York City
ASCE 1994
Frozen Earth Cofferdam Design
Procedures of the Sixth International Symposium on Ground Freezing
Beijing, 1991
Ground Freezing to Provide Support for Tunneling Using Vertical Refrigeration Pipes
Proceedings, Rapid Excavation and Tunneling Conference
Seattle, Washington, 1991
Ground Freezing to Control Ground Water and Support Deep Storm Sewer Structural Excavations
Proceedings, Rapid Excavation and Tunneling Conferece
Los Angeles, 1989
New Design Method for Frozen Earth Structures with Reinforcement
Unpublished, Ph.D., Thesis, Michigan State University
East Lansing, Michigan 1990
Education
Doctor of Philosophy, Civil Engineering
Michigan State University
Dissertation: New Design Method for Frozen Earth
Structures with Reinforcement
Master of Science, Civil Engineering
Michigan State University
Bachelor of Science, Civil Engineering
Michigan State University
Professional Affiliations
Member, American Society of Civil Engineers
Member, Society of Mining Engineers
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