Geo-Technology Associates, Inc. (GTA) was established in 1985 and currently has 21 offices located throughout the Mid-Atlantic, Southeast, and Midwest 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 500 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
Stephen A. Cutter - Sterling, VA; Frederick, MD
Michael W. Derr, P.E. - Quakertown and Wilkes-Barre, PA
Robert Dykstra, P.E. - NYC Metro Office
Dennis C. Loh, P.E. - Somerset, NJ
Jonathan D. Raab, P.E. - York, PA and Pittsburgh Metro; Northeastern OH
Meghan (Lester) McDonough, P.E. - New Castle, DE
Gregory R. Sauter, P.E. - Georgetown, DE
Donny Sousa - Somerset, NJ
W. Shawn Sullivan, P.E. - Raleigh, NC
Daniel D. Terranova, P.E. - Nashville, TN
John P. Wille, P.E. - Charlotte, NC and Greenville, SC
Thomas M. Wirth, P.E. - Abingdon, MD
Robert Howard, P.E. - Quakertown, PA
Scott J. Taylor, P.E. - Laurel, MD
Sarah E. Dalton, P.E. - Sterling, VA
Eric B. Church, P.E. - Richmond, VA
John P. Moscati - Charlotte, NC
Gautham Pillappa, P.E. - Orlando, FL
David N. Zmijewski, P.E. - Quakertown, PA; Richmond, VA; Orlando, FL

DRILLING SERVICES
Benjamin T. Dinsmore, P.E. - Laurel and Waldorf, MD
Christopher M. Reith, P.E. - New Castle, DE
Amin Rahman, P.E. - Sterling, VA
Daniel D. Terranova, P.E. - Nashville, TN

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

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

GEOTECHNICAL SERVICES
Michael W. Derr, P.E. - Quakertown and Wilkes-Barre, PA
Benjamin T. Dinsmore, P.E. - Laurel and Waldorf, MD
Robert Dykstra, P.E. - NYC Metro Office
Dennis C. Loh, P.E. - Somerset, NJ
Ravi Malviya, P.E. - Laurel, MD
Meghan (Lester) McDonough, P.E. - New Castle, DE
Jonathan D. Raab, P.E. - York, PA and Pittsburgh Metro; Northeastern OH
Amin Rahman, P.E. - Sterling, VA
Christopher M. Reith, P.E. - New Castle, DE
Gregory R. Sauter, P.E. - Georgetown, DE
W. Shawn Sullivan, P.E. - Raleigh, NC
Daniel D. Terranova, P.E. - Nashville, TN
John P. Wille, P.E. - Charlotte, NC and Greenville, SC
Thomas M. Wirth, P.E. - Abingdon, MD
Sarah E. Dalton, P.E. - Sterling, VA
Eric B. Church, P.E. - Richmond, VA
Gautham Pillappa, P.E. - Orlando, FL
David N. Zmijewski, P.E. - Quakertown, PA; Richmond, VA; Orlando, FL

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

NATURAL RESOURCES CONSULTING
Mark D. Rodano - Abingdon, MD
T. Andrew Stansfield, Jr. - Abingdon, MD

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

FINANCE & ADMINISTRATION
David J. Garbarino - Abingdon, MD
Janet Reid, CPA - Abingdon, MD