Jeffrey P. Jaros

Jeff is President | CEO of NTH Consultants, Ltd. (NTH), an infrastructure and environmental engineering firm headquartered in Michigan. He joined NTH in April 2005 and was named a Senior Associate/Vice President in April 2008. He was promoted to Chief Operating Officer in 2017 and appointed to CEO in May 2023. Jeff received his B.S. in Meteorology from Penn State in 1991 and his M.B.A. in 2000 from Michigan State University.

Jeff started his career developing weather forecasts for a host of industries ranging from railways to professional sports teams. Having grown up during the bustling days of blast furnaces and steel mills in Pittsburgh, his desire was to use his degree to perform atmospheric modeling. After a short stint as a forecaster, he moved to Michigan to work with the regulatory agency performing emissions modeling for clean air act permits, and regional atmospheric modeling and meteorological modeling to support state-level programs aimed at reducing ozone.

During this time, Jeff earned his Executive M.B.A. and entered the engineering and environmental consulting industry providing permitting and compliance support to various industries and clients. Through the years, he assumed increasing leadership roles, culminating in his current role. He has been in the engineering consulting industry for over 20 years.

Today, Jeff lives in Michigan with his wife Renee and pup Sullivan. They are empty nesters and proud parents of two adult children. He is an active member of GBA’s Business Practices and Peer Review Committees.

Kent Bannister, P.Eng.

Kent is the President and CEO of TREK Geotechnical Inc., a growing earth sciences and materials testing consulting firm based out of Winnipeg, Canada. For the past 25 years, he has been a practicing geotechnical engineer throughout the prairie provinces of Canada and into Canada’s North. In addition to his corporate duties, Kent acts as a geotechnical design lead or reviewer on a variety of projects. Most notably, Kent has acted as the Geotechnical Lead for some of the largest design-build infrastructure projects completed in his home province. Throughout his career, Kent has served in a variety of roles to help to elevate the geotechnical profession. He first started volunteering for the Canadian Geotechnical Society (CGS) while working on his M.Sc. degree in the late nineties. Since then, he has continuously served the CGS in a variety of roles most notably as member of their National Board of Directors as the Chair of the Professional Practice Committee from 2011 to 2015 and as Vice President Finance from 2017 to 2020. He presently serves on the Board of Directors for the Canadian Foundation for Geotechnique as their Treasurer. Kent attended his first GBA Conference a few years ago as a representative of the CGS, he was so impressed with what he saw that he returned to Winnipeg and arranged for TREK to join as a member firm immediately!
When he is not working, Kent enjoys spending time with his wife and their two teenaged sons. This generally consists of boating and camping through the summer months and chauffeuring kids to various activities for the remainder of the year. He believes in supporting his community and has served for several years on the organizing committee for the Children’s Hospital Foundation of Manitoba’s Annual Golf Tournament. He also provides financial and fundraising support to Make-A-Wish Canada and the Movement Centre of Manitoba.

Carrie Foulk, P.E., G.E.

Carrie Foulk, P.E., G.E., is a senior geotechnical engineer at BSK Associates and is a licensed Geotechnical Engineer in the State of California with nearly 20 years of geotechnical experience. Carrie obtained her bachelor’s degree at the University of Washington and master’s degree from the University of California, Berkeley. She started in the geotechnical engineering industry in 1998 after a 2-year stint as a structural engineer at Boeing. Carrie also took a 5-year hiatus to be a stay-at-home mom when her children were born.
Today, Carrie serves as the Geotechnical Group Manager for BSK’s Livermore and Rancho Cordova offices and serves as BSK’s Geotechnical Technical Lead. She has a wide range of experience, especially with public works projects, schools, solar, and high-tech companies in the San Francisco Bay Area and California’s Central Valley. Carrie is the chair of the GBA’s Geotechnical Business Committee and recently graduated from the GBA’s Emerging Leaders Committee.

Stuart “Stu” Thompson

Stu Thompson is the President and CEO of CTL|Thompson, Inc. CTL|Thompson is a geoprofessional consulting engineering firm with over 200 employees in offices across the Mountain West. He is responsible for strategic leadership and curating the firm’s vision, mission, values, and culture.

Mr. Thompson is a former Chair of GBA’s Peer Review Committee and a graduate of GBA’s Emerging Leaders Class 1.

Stu and his wife, Kelly, live in the Denver area and will theoretically become empty nesters in 2023 as the third of three daughters begins her college adventure.

Dan Schaefer, P.E.

Dan Schaefer was born and raised in Rochester, NY. After reading the children’s book Who Built the Highway (Norman Bate, 1953) at an early age, Dan was hooked and knew that somehow, someway, he was going to be involved in construction. He spent many days as a youth watching construction projects in the city and building things around the house, and carried that interest to college to pursue a degree in Civil Engineering. After receiving his Civil Engineering from New England College in 1985, Dan worked for Empire Soils Investigations, Inc. in western New York for five years before moving to Raleigh, NC in 1990 to join Froehling & Robertson, Inc. During his early years at F&R, he was able to complete a M.S. degree in Civil Engineering from North Carolina State University. In 2001, Dan became the Branch Manager of F&R’s Raleigh office. In 2015, Dan was promoted to the position of Vice President, a title holds today. In this role, Dan oversees operations in F&R’s North Carolina offices. He also administers several internally and externally facing programs geared toward improving F&R’s business practices.

Dan has more than 35 years of experience specializing in geotechnical engineering, construction inspection and materials testing, and a wide variety environmental consulting services. In addition to his management duties, he continues to serve as a senior engineer on a wide variety of site development, building and transportation projects with particular emphasis in foundation, retaining wall, pavement and slope design. Dan was the Chair of GBA’s CoMET Business Committee from 2017 to 2022.

Victor R. Donald, P.E.

Vic Donald is a professional geotechnical engineer, with over 40 years of experience background in geotechnical and geoenvironmental engineering. He received his B.S. and M.S. in Civil Engineering from Louisiana State University in 1979 and 1981, respectively.
Vic established his own firm in 1986 in Baton Rouge, Louisiana, partnering with a GBA member firm that initiated his 35+ year affiliation with GBA. He credits his exposure to the practices and professionals within GBA as a “witness mark”, effectively aligning his passion for quality and value in the geoprofession. He leads an ever-growing and evolving firm to over 130 staff with 5 offices in the Southeast United States.
He is a Senior Vice President for Terracon, a 5,000-person geoprofessional company with over 150 offices throughout the United States. He served for 10 years as National Director of Geotechnical Services for Terracon. This experience enriched his understanding of the challenges and opportunities within profession on a national basis.
Now, as Terracon’s National Director of Innovative Services, Vic is focusing his efforts on his passion to constantly improve and deliver greater value in our work than ever before. In this capacity, he now leads efforts related to data aggregation, data science and evaluation, machine learning and software development and sales.

Teresa L. Peterson, P.E., C.M.E., LEED AP O&M, ENV SP

Teresa L. Peterson, P.E., C.M.E., LEED AP O&M, ENV SP is a Vice President and Senior Project Manager for Gannett Fleming, Inc. working with their Facilities team. Gannett Fleming is a multidisciplinary, innovative consulting firm with over 2,500 employees across North America. She is the Northeast Regional Director of Sustainability and sits on Gannett’s Collaborative Research and Innovation Center working team. Based out of their Marlton, New Jersey office, she brings more than 20 years of experience successfully delivering projects to private and public clients in the facilities, transportation, power, and water utility markets. Peterson earned her Bachelor of Science degree in Systems Science and Engineering from the University of Pennsylvania and is a licensed Professional Engineer in New Jersey.


Guy Marcozzi, P.E., D.GE, LEED AP BD+C

Guy’s engineering career began in 1984 as a construction/drafting technician at Duffield Associates, a geosciences consulting firm. Following graduation from University of Delaware, he continued with the firm, evolving his position through the years as a structural engineer, geotechnical engineer, civil engineer, project manager and division leader for the Geotechnical, Construction and Water Resources divisions. In 1994, he became a partner in the firm, and in 2000 was named Vice President /Director of Operations. In 2008, Guy was promoted to President of Duffield Associates and became Chief Executive Officer in 2011. By 2020, the firm has doubled in size with industry leading metrics. After leading a strategic planning process broadly including the firm’s leadership, Duffield Associates concluded that the collective future would be best served assimilating into a national organization and joined a private equity based start-up Verdantas in 2021. Guy has remained on with Verdantas in a variety of roles including Executive Vice President, National Practice Group Leader and currently as a part time Senior Consultant.

Guy earned his professional licensure in 1990, and at one time had professional registration in 12 states. He also earned his accreditation as a LEED AP in 2008, and is currently accredited as a LEED AP/ Building Design and Construction (LEED AP/ BD+C). Guy is nationally recognized as an ASCE Fellow for his contributions to the profession. He was honored by the Delaware Council of Engineering Societies as the first Delaware Young Engineer of the Year in 2000 and subsequently, Delaware’s Engineer of the Year in 2012. He is also a Diplomate of the GeoInstitute. He was also recognized as the University of Delaware’s Civil Engineering Alumni of the Year in 2021.

He has been an active participant in many Delaware engineering organizations including service as President in several of these organizations; Delaware Engineering Society, Delaware Association of Professional Engineers and American Society of Civil Engineers – Delaware Section. He is also a member of the National Society of Professional Engineers and as well as a voting member of the ASTM Committees on Sustainability and on Soil and Rock. Guy has served as an adjunct professor at the University of Delaware – College of Engineering, served on the ABET Accreditation Committee, the Civil and Environmental Engineering Advisory Council and appointed by two Dean’s to the Engineering College’s Advisory Council and University’s Public Affairs and Grounds and Buildings Committees.

He has also remained continuously active in his community. Guy is a Trustee of the University of Delaware and was appointed by the Governor and presently serves on the Delaware Economic and Financial Advisory Council, was legislatively confirmed to the Delaware Environmental Appeal Board, serves on the Delaware State Chamber of Commerce Board of Governors/. He has previously served on the New Castle County Chamber of Commerce, Government Affairs Committee and as Chair of the Business Development Committee for its Economic Development Council. He is Chair of Easter Seals Society Delaware Maryland (ESSD-M) property holding company, past Chair and current board member of Multiplying Good Delaware (formerly the Jefferson Awards) and also past Chair of the Delaware’s American Heart Association. He served for many years as the President of his community civic association and as Vice President of the Board of Trustees at Sanford School. Guy also spent many years with youth sports including President and licensed coach for the Delaware Rush Soccer Club (aka Hockessin Soccer Club), where he was recognized as Administrator of the Year, and was a long-time coach for CYM basketball.

Elizabeth Clarke

Elizabeth Clarke is Founder and President of Structure Groups which is a woman owned small business certified professional engineering firm specializing in construction observations and material testing services. With more than 30 years’ experience, she opened her business in 2013 serving northern California and oversees all management and financial operations while staying actively involved in day-to-day operations. With direct knowledge of managing special inspection and materials testing services personnel, including certification, accreditation, and recognition requirements, she continues to provide project management and oversight for private and public projects. Bringing practicality to the technical side, she is known for her ability to build strong relationships with her clients, bringing proactive solutions to the team to keep the project moving forward.

Elizabeth has been involved with GBA since 2008 and actively involved with the CoMET Business Committee where she currently served as the chairperson. She holds a B.S. in Administration of Justice along with a A.A. in Education and holds a part-time teaching credential to teach CAD/Design Drafting in the community colleges. She serves on the Boards of Kaleidoscope, Lions, the Discovery Bay Chamber, and the California Council of Testing and Inspection Agencies. Elizabeth leads her firm’s focus in giving back to the community involving her employees in volunteering and donating to events with Lions and the local food pantries. She is certified to provide vision screening to Preschool and K-12 children through Lions International.
Elizabeth and her husband Mike have two adult sons and a teenage grandson. They enjoy living on the golf course in Discovery Bay where they share their home with two rescue dogs from Tijuana.