April 12, 2021

« All News

Congratulations to Newly Promoted Senior Principals in 2021

On behalf of the Leadership Committee (LeadCom) and the Principal Nomination Review Committee (PNRC), I am pleased to announce the promotion of Alex Mckenzie‐Johnson, Amer Hussain, Carrie Pendleton, Dave Bonnett, David Zell, Eric Sager, James Culp, Jamey Dotson, Jim Deitsch, Matt Wissler, Rachel Klinger, Stephen Foster, and Todd Kafka to the position of Senior Principal within the Geosyntec family of companies.

Alex Mckenzie‐Johnson, P.G., L.G., L.E.G. (The Woodlands, Texas)
Alex has more than 17 years of professional experience focused on geohazard assessment and management for oil and gas clients. He joined Geosyntec two years ago and is leading the firm's geohazard management practice. Alex earned an M.S. in Geology from Western Washington University and a B.S. in Geology from the University of Puget Sound. He is a registered Professional Geoscientist in Texas and Licensed Geologist and a Licensed Engineering Geologist in Washington.

Amer Hussain, P.E. (Fresno, California)
Amer has more than 25 years of experience focused on groundwater assessment and remediation, regulatory compliance, and permitting. He specializes in assisting clients in the oil and gas, water resources, solid waste, and sand and gravel mining sectors in California. Amer earned an M.S. in Civil Engineering and a B.S. in Civil Engineering from California State University, Fresno, and is a registered Professional Engineer in California.

Carrie Pendleton, P.E., PMP (Columbia, Maryland)
Carrie has more than 18 years of professional experience in the design, permitting, and construction of solid waste management facilities, including those for municipal solid waste (MSW), construction and demolition debris (CDD), and coal combustion residuals (CCR). She has been involved in numerous projects at all phases of investigation, planning, design, permitting, and implementation. Carrie earned an M.S. in Environmental Engineering from the University of Illinois at Urbana-Champaign; a B.S. in Civil Engineering from Virginia Polytechnic Institute and State University; is a registered Professional Engineer in Delaware, Iowa, Maryland, Montana, New Jersey, Ohio, Virginia; and is a Project Management Professional.

David Bonnett, P.E., P.Eng. (Acton, Massachusetts)
Dave has 36 years of construction quality assurance (CQA) and construction management (CM) experience related to the installation of geosynthetics and soil liners for waste management facilities and for remedial construction activities at CERCLA closures and RCRA sites. Dave earned a B.S. in Civil Engineering from McGill University; a B.A.in Biology from Queen’s University; and is a registered Professional Engineer in Connecticut, Maine, Massachusetts, New Hampshire, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and Ontario.

David Zell, P.G., C.Hg. (Santa Barbara, California)
Dave has more than 21 years of experience as an environmental hydrogeologist and hazardous materials specialist, with a strong background in project management, site characterization, and environmental analysis. Dave earned a B.S. in Geology from the University of California, Santa Barbara; is a registered Professional Geologist and a Certified Hydrogeologist in California.

Eric Sager, P.E. (Clearwater, Florida)
Eric has over 23 years of experience focused on site investigations, conceptual site model development, feasibility studies, remedial design and implementation, and long-term monitoring for sites contaminated by VOCs, petroleum hydrocarbons, polychlorinated biphenyls, pesticides, herbicides, metals, and several emerging contaminants of concern in various media. Eric earned an M.S. in Geology from East Carolina University; a B.S. in Geology from the College of William and Mary; and is a registered Professional Geologist in Florida.

James S. Culp, P.G. (Pittsburgh, Pennsylvania)
Jim has over 32 years of experience providing geologic and hydrogeologic evaluations, multi-site program management, remediation design and optimization, building decontamination and demolition, agency negotiations, and multimedia contaminant migration evaluations for a variety of industries. Jim earned a B.S. in Geology from Kent State University and is a registered Professional Geologist in Pennsylvania.

Jamey Dotson, P.E. (Chattanooga, Tennessee)
Jamey has more than 17 years of experience focused on civil, environmental, and geotechnical engineering; program management; and construction management. He earned an M.S. in Civil Engineering and a B.S. in Civil Engineering from Tennessee Technological University and is a registered Professional Engineer in Tennessee and Georgia.


Jim Deitsch, Ph.D., P.E. (Kennesaw, Georgia)
Jim has more than 25 years of experience focused on site remediation, remediation system design, water and wastewater treatment system design, and execution of design- build/construction management at risk projects. Jim's experience includes sites regulated under RCRA, CERCLA, state-led, and voluntary cleanup programs. Jim earned a Ph.D.in Civil Engineering and an M.S. in Civil Engineering from the University of Virginia; a B.S. in Civil Engineering from the University of Notre Dame; and is a registered Professional Engineer in Georgia, Nevada, North Carolina, and Ohio.


Matt Wissler, P.G. (Clearwater, Florida)
Matt has more than 18 years of experience focused on the evaluation of water resources, hydrogeologic investigations relating to resource and waste permitting, groundwater modeling of complex aquifer systems, contaminated site assessment and remediation, and vapor intrusion assessment and mitigation. Matt earned an M.S. in Hydrogeology and Geochemistry from the University of South Florida; a B.S. in Geology from Florida State University; and is a registered Professional Geologist in Florida, Tennessee, South Carolina, and North Carolina.

Rachel Klinger, P.E., BCEE (Jacksonville, Florida)
Rachel has more than 13 years of environmental consulting experience focused on site characterization; remedial system technology evaluations; cost estimating and design; and remedial system construction, operation, and optimization. Rachel earned an M.S.in Civil Engineering from the University of Virginia; a B.S.in Civil Engineering from Florida State University; and is a registered Professional Engineer in Florida.

Stephen Foster, Ph.D. (Lafayette, Colorado)
Steve has more than 30 years of experience focused on human health and ecological risk assessments for projects regulated under CERCLA, RCRA, the Clean Air and Clean Water Acts, as well as with permitting for industrial facilities. He earned a Ph.D. in Organic Chemistry from the Imperial College of Science and Technology, United Kingdom and a B.Sc. in Chemistry, from the University of Sussex, United Kingdom.

Todd Kafka, P.G. (Tampa, Florida)
Todd has more than 26 years of professional experience focused on site assessment, remediation, and hydrogeological investigations under RCRA, CERCLA, and numerous state programs. Todd has particular expertise in bedrock/karst hydrogeology and applying new and innovative technologies to develop robust data and analyses that help advance sites more quickly towards closure. Todd earned an M.S. in Geology from Washington State University and a B.A. in Geology/Environmental Studies (Joint Degree) from Middlebury College. He is a registered Professional Geologist in Florida, Tennessee, and Virginia and a Registered Site Manager (RSM) in North Carolina.

Please join us in congratulating Alex Mckenzie‐Johnson, Amer Hussain, Carrie Pendleton, David Bonnett, David Zell, Eric Sager, James S. Culp, Jamey Dotson, Jim Deitsch, Matt Wissler, Rachel Klinger, Stephen Foster, and Todd Kafka to the position of Senior Principal within the Geosyntec family of companies.