Firm Profile

Geo-Technology Associates, Inc. (GTA) was established in 1985 and currently has 20 offices located throughout the Northeast, Mid-Atlantic, and Southeast regions.  GTA provides services to residential, commercial, institutional, industrial, and energy clients; state and federal government agencies; and architects, engineers, and contractors. With more than 450 engineers, geologists, scientists, technicians, and support personnel, GTA focuses on geotechnical issues such as subsurface exploration; geotechnical and foundation engineering; groundwater resource and wastewater disposal issues; construction observation and materials testing; environmental due diligence issues from Phase I Environmental Site Assessments through management of remediation for contaminated water and soil; and natural resource services ranging from natural resource inventories to federal and state permit processing.

GTA nurtures a cooperative spirit with clients through responsive communication. We understand the components of our clients’ success. We are very conscientious of our clients’ budget and treat their finances as if they were our own. Superior delivery of service and creative solutions complement our capabilities and collective commitment.

 

LEADERSHIP

PRESIDENT
David N. Zmijewski, P.E. - Quakertown, PA

CONSTRUCTION SERVICES
Dennis C. Loh, P.E. - Somerset, NJ
Donny Sousa - Somerset, NJ
Robert Dykstra, P.E. - NYC Metro Office
Jonathan D. Raab, P.E. - York, PA and Pittsburgh Metro; Northeastern OH
Michael W. Derr, P.E. - Quakertown and Wilkes-Barre, PA
Thomas M. Wirth, P.E. - Abingdon, MD
Stephen A. Cutter - Sterling, VA; Frederick, MD
Meghan Lester, P.E. - New Castle, DE
Gregory R. Sauter, P.E. - Georgetown, DE
Daniel D. Terranova, P.E. - Nashville, TN
John P. Wille, P.E. - Charlotte, NC and Greenville, SC

DRILLING SERVICES
Ravi Malviya, P.E. - Laurel and Waldorf, MD
Christopher M. Reith, P.E. - New Castle, DE
Amin Rahman, P.E. - Sterling, VA

ENVIRONMENTAL CONSULTING
Gary S. Rakow, LSRP - Somerset, NJ
Richard Lake, LSRP - Quakertown, PA
Mark Rodano - Abingdon, MD
Paul H. Hayden, P.G., LRS Baltimore, MD
Samuel J. Stevenson - Laurel, MD
Andrew S. Hendricks, P.G., LRS - Sterling, VA

GEOPHYSICS AND REMOTE SENSING
Paul Scott, P.G. - Abingdon, MD
Craig T. Rodano, P.G. - Abingdon, MD; Charlotte & Raleigh, NC

 

GEOTECHNICAL SERVICES
Dennis C. Loh, P.E. - Somerset, NJ
Robert Dykstra, P.E. - NYC Metro Office
David N. Zmijewski, P.E. - Quakertown, PA; Orlando, FL
Michael W. Derr, P.E. - Quakertown and Wilkes-Barre, PA
Thomas M. Wirth, P.E. - Abingdon, MD
Ravi Malviya, P.E. - Laurel, MD
Benjamin T. Dinsmore, P.E. - Laurel, MD
Christopher M. Reith, P.E. - New Castle, DE
Gregory R. Sauter, P.E. - Georgetown, DE
Amin Rahman, P.E. - Sterling, VA
Daniel D. Terranova, P.E. - Nashville, TN
John P. Wille, P.E. - Charlotte, NC and Greenville, SC

GROUNDWATER & WASTEWATER
Craig T. Rodano, P.G. - Abingdon, MD; Charlotte & Raleigh, NC
Paul Scott, P.G. - Abingdon, MD

NATURAL RESOURCES CONSULTING
T. Andrew Stansfield, Jr. - Abingdon, MD
Mark Rodano - Abingdon, MD
Paul H. Hayden, P.G., LRS - Baltimore, MD

UTILITY CONSULTING
Jonathan D. Raab, P.E. - York, PA and Pittsburgh Metro; Northeastern OH
Thomas M. Wirth, P.E. - Abingdon, MD
T. Andrew Stansfield, Jr. - Abingdon, MD
Amin Rahman, P.E. - Sterling, VA

FINANCE & ADMINISTRATION
David A. Quaranta, CPA - Abingdon, MD
David J. Garbarino - Abingdon, MD