April 10, 2023

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Geosyntec Announces the Appointment of 24 New Principals

The Geosyntec Family of Companies is pleased to announce the promotion of 24 individuals to the position of Principal. Each of these new Principals has made significant contributions to delivering outstanding projects to first-class clients, developing strong relationships with those clients, building our practices, leveraging their own expertise and experience of their colleagues, recruiting outstanding staff, and working collaboratively with their co-workers.


Adrienne Miller, P.E., QSP, QISP (California)

Adrienne has 21 years of experience in water resources engineering and surface-water management. She has in-depth knowledge of construction, industrial, and municipal National Pollutant Discharge Elimination System (NPDES) permits, point and nonpoint source control, and stormwater best management practice monitoring and maintenance. Adriene joined Geosyntec 12 years ago and is a strong leader in multiple technical areas with clients and projects throughout California. She leads the California Water Resources Inclusion, Diversity, and Equity Task Force and exhibits a strong collaborative work style. Adrienne earned an M.S. in Civil and Environmental Engineering from the University of Washington; a B.S. in Civil and Environmental Engineering from the University of California, Berkeley; a B.A. in Environmental Studies from the University of California, Santa Cruz; and is a registered Professional Civil Engineer in California.

Andrew Morgan, MSc. CGeol. EurGeol. (Bristol, UK)

Andrew has 22 years of experience focused on the assessment, management, and remediation of contaminated land, including all aspects of site conceptualization, environmental assessment and remediation engineering, remediation options appraisal, feasibility testing, detailed full-scale design, installation, and verification evaluation. In his 10 years with Geosyntec, Andrew has distinguished himself as a consummate remediation professional, defined by his ability to attract, develop, and retain a core team of scientists and engineers. He has also been successful with business development. Andrew earned an MSc. in Applied Environmental Geology and a B.Sc. Honours in Environmental Geoscience from Cardiff University; a Postgraduate Certificate in Business Administration from The Open University; and is a Chartered Geologist and European Registered Geologist.

Andy Andrews, P.E, QISP, QSD (Sacramento, California)

Andy has 14 years of experience in environmental engineering and consulting, including environmental compliance, with an emphasis on compliance, remediation design, construction oversight, treatment system optimization, treatability studies, and data evaluation. Andy has held critical roles in securing some of the Sacramento Branch's flywheel clients. Andy has also distinguished himself by building and managing teams that excel in project execution and delivery. Andy oversees a growing group of engineers and a significant backlog of work. Andy earned a B.S. in Civil Engineering from California Polytechnic State University, San Luis Obispo; and is a registered Professional Civil Engineer in California; a Qualified Industrial Stormwater Practitioner; and a Qualified Stormwater Pollution Prevention Plan (SWPPP) Developer.

Avery Blackwell, P.E. (Santa Barbara, California)

Avery has 13 years of experience, having joined Geosyntec 11 years ago as an intern. He helps clients in California's public and private sectors, including planning, monitoring, analysis, modeling, design, and compliance reporting of stormwater, water supply, and recycled water projects. He has distinguished himself as an important leader, developing new business and managing projects throughout the state, with particular emphasis on municipal clients in California’s Central Coast. Avery demonstrates our Geosyntec values, with his work-life balance serving as an example to many. Avery earned an M.S. in Civil Engineering from Colorado State University; a B.S. in Civil Engineering from California State Polytechnic University, San Luis Obispo; and is a registered Professional Civil Engineer in California.

Eryn Torres, P.G. (Ventura, California)

Eryn has 10 years of experience providing strategic, technical, and project management support for a variety of clients and projects, with a focus on subsurface analysis. She manages the Santa Barbara Information Management Services department and leads diverse, multidisciplinary teams to achieve exceptional outcomes for complex projects. Eryn is well-known as a strong collaborator, with high levels of recognition in the annual Interoffice Collaboration survey. In addition to being a technical leader, Eryn is an exceptional people manager and client advocate. Eryn earned an M.S. in Geophysics and a B.S. in Geophysics from the University of California, Santa Barbara; and is a registered Geologist in California.

Glenn "Chip" Carwell, P.E. (Jacksonville, Florida)

Chip is an accomplished Sell-Manage-Do practitioner with 31 years of industry experience and a unique environmental management skillset focused on EH&S compliance and auditing. He also offers groundwater skills and works on projects involving the intersection of environmental management and groundwater. He joined Geosyntec nine years ago and is often sought out by colleagues for his technical versatility and has been a pivotal contributor to several save-the-day moments. Chip demonstrates solid business development growth and is committed to helping grow bench strength across the firm and specifically in Florida. Chip earned an M.B.A. from Tennessee State University; a B.S. in Civil Engineering Technology from Old Dominion University; is a registered Professional Engineer in Florida, Georgia, and Virginia; and is a Certified Hazardous Materials Manager.

Heather Tahon, BCES (Pittsburgh, Pennsylvania)

Heather has 19 years of experience managing numerous Phase I and II ESAs, site investigation and remediation projects, due diligence in support of property transactions, and regulatory compliance issues for sites located in the United States' East Coast and Midwest. Heather joined Geosyntec 10 years ago and has made significant contributions to building the Pittsburgh office since its founding, including successfully recruiting new staff and leading complex projects. Heather built our compliance practice in Pittsburgh and serves as manager of the Pittsburgh Groundwater Practice. Heather also serves as Chair of the Society of Women Environmental Professionals, Three Rivers Chapter. Her firmwide impact continues to grow through serving on the Steering Committee for the Waterfront Practice Area. Heather earned a B.S. in Earth and Marine Science from Pennsylvania State University; and is a Board-Certified Environmental Scientist.

Jonathan Allen, CPESC, TN-QHP (Knoxville, Tennessee)

Jonathan has 18 years of experience in permitting and natural resources. Since joining Geosyntec, Jonathan has become a technical, business development, and staff leader for the Tennessee Branch, contributing strongly to its success. He leads the Knoxville Environmental department, successfully cross-selling services using local and companywide resources for multiple stormwater, remediation, geotechnical, and solid waste opportunities. His work fosters collaboration between our water and natural resources and geotechnical and geoenvironmental practices as well as between branches. Jonathan earned an M.S. in Biosystems Engineering Technology from the University of Tennessee; a B.S. in Natural Resources Management from the University of Tennessee at Martin; is a Certified Professional in Erosion and Sediment Control; and is a Tennessee Qualified Hydrologic Professional.

Julie Chambon, Ph.D., P.E (Oakland, California)

Julie has 10 years of consulting experience at Geosyntec in hydrogeology, modeling, remediation, and strategic advisement with a wide variety of sites of many scales. She manages and supports multiple projects, including water resources assessment, hydrogeological evaluation, groundwater flow and transport modeling, groundwater monitoring, remediation performance evaluation, and site investigation and characterization. Julie leads our modeling practice in the West Region, expanding our services with existing clients to generate significant new revenue. She has also secured new clients in support of our growth in the area of water supply. Julie has distinguished herself as a strong collaborator and mentor. Julie earned a Ph.D. in Environmental Engineering and an M.Sc. in Environmental Engineering from the Technical University of Denmark; an M.Sc. in Engineering from École Centrale de Lille in France; and is a registered Professional Civil Engineer in California.

Lisa Hall, P.E. (Ontario, California)

Lisa has 33 years of experience as a project manager, building and leading teams to successfully navigate environmental projects through their life cycles. Her experience includes conducting site investigations worldwide across many diverse hydrogeologic settings. Lisa joined Geosyntec in 2020, opening and substantially growing the Ontario office as the San Bernardino groundwater department of the San Diego branch. This year, she has taken over a leadership role with the Long Beach department as well. Lisa serves in key roles on projects with clients, securing three new clients to the firm in 2022. She is a true team player who promotes staff retention and development. Lisa earned a B.S. in Mechanical Engineering from the University of Illinois and is a registered Professional Engineer (Mechanical) in California.

Lonnie Mercer, P.G., CEM (Salt Lake City, Utah)

Lonnie has 20 years of professional experience in environmental site investigation and remediation, environmental due diligence, and environmental compliance. His experience includes Phase I and II environmental site assessments, environmental compliance audits, soil and groundwater investigations, soil vapor intrusion assessments, and remedial design and action for sites with contaminated soil, groundwater, surface water, and sediment. Lonnie has excellent leadership and project management skills. He joined the firm as one of the founding four inaugural employees in our Salt Lake City office. He is known for his positive attitude, willingness to go the extra mile, commitment to forming diverse project teams, and strong work ethic. Lonnie earned an M.S. in Geology from Brigham Young University; a B.S. in Geology from the University of Utah; is a registered Professional Geologist in Utah; and a Certified Environmental Manager in Nevada.

Matt Chartier, P.E. (Acton, Massachusetts)

Matt has 22 years of experience in geotechnical and geostructural design, analysis, and construction of large-scale civil engineering projects. He has worked extensively on above- and below-grade structures, including buildings, bridges, flood-protection systems, deep basements, stormwater infrastructure, earth embankments, and earth-retaining structures. Matt has been a crucial part of the tremendous success and growth of our Geostructural and Construction Engineering practice since joining the firm. He has taken on demanding project and pursuit challenges and has elevated the firm's capabilities in integrating production-level numerical modeling into real design. Matt earned an M.S. in Civil Engineering from the Massachusetts Institute of Technology; a B.S. in Geology, Water Resources from New York State College at Oneonta; a B.A. in Psychology from Binghamton University; and is a registered Professional Engineer in Massachusetts and New York.

Matt Vanderkooy, P.Geo (Guelph, Ontario)

Matt is acknowledged for his skills in balancing client needs, regulatory considerations, and site conditions to bring projects to exceptional outcomes, particularly those that require multidisciplinary teams and complex stakeholder scenarios. Matt's primary skill is in the application of geoscience expertise to guide investigations and remedial designs and is known for his efforts in addressing emerging contaminants, particularly PFAS. He joined the firm 12 years ago as a staff scientist. From the start, he displayed an entrepreneurial spirit, a client-focused approach to problem solving, and a strong drive to progress scope through to completion to build the next opportunity. He focuses on managing flywheel projects for clients with challenging environmental problems and sophisticated environmental managers who appreciate high-value service and rich technology offerings. Matt is committed to supporting opportunities with colleagues and mentoring the next generation of leaders within Geosyntec. Matt earned an M.Sc. in Hydrogeology and a B.Sc. Honours Chemistry from the University of Waterloo. Mattis a registered Professional Geoscientist in Ontario.

Mustafa Saadi, Ph.D., P.E. (Kennesaw, Georgia)

Mustafa has 18 years of consulting and project management experience. He joined Geosyntec 11 years ago and provides technical expertise for our geoenvironmental engineering practice with a focus on geotechnical engineering. His waste containment design experience includes containment facilities for low-level radioactive waste, hazardous waste, municipal solid waste, and ash waste. Mustafa fully embraces the Sell-Manage-Do model, succeeding in his business development efforts, excelling as a technical leader in civil design and in situ stabilization, and successfully managing flywheel projects. He is a valued mentor to many early- and midcareer professionals, providing them with opportunities for professional growth. Mustafa earned a Ph.D. in Civil Engineering, an M.S. in Civil Engineering, and a Graduate Studies in Spatial Analysis Certificate from the University of Michigan; and a Master of Engineering Management and a B.E. in Civil Engineering from the American University of Beirut in Lebanon. He is a registered Professional Engineer in Florida, Georgia, Kentucky, Michigan, and Ohio.

Nicole Gotberg, P.G. (Sacramento, California)

Nicole has 16 years of environmental consulting experience. She manages and contributes technically to complex groundwater projects for the private and public sectors as well as for agency clients. She has also contributed to Superfund remediation projects, landfill monitoring projects, and potable groundwater resource projects. Nicole joined Geosyntec 15 years ago immediately after completing graduate school. She is known for her technical expertise as a hydrogeologist and for collaborating closely with clients on complex projects. She holds key roles in leadership, staff mentoring, quality, and technical training for the Sacramento Branch. Recently serving as a hydrogeologic expert witness, she is gaining prominence with local environmental law firms. Nicole earned an M.S. in Geosciences from Princeton University; a B.S. in Geology from the University of California, Davis; and is a registered Professional Geologist in California.

Phil Reidy, P.E. (Los Angeles, California)

Phil has more than 30 years of experience in geotechnical and water resources engineering, environmental assessments, and remediation in the United States and Malaysia. His areas of expertise include green infrastructure, urban drainage, control systems and remote sensing, and commercial-scale stormwater capture and reuse systems. Phil earned an M.S. in Civil Engineering/Geotechnical from Northeastern University; a B.S. in Civil Engineering from the University of Massachusetts; and is a registered Professional Engineer in Massachusetts.

Renee Bourdeau, P.E. (Hamilton, Massachusetts)

Renee has 16 years of experience in watershed and municipal planning, land-use master planning and environmental permitting, design of stormwater management controls with a focus on low-impact development, and green infrastructure techniques. Renee has led the water and natural resources practice in New England, targeting and winning new projects and clients who value Geosyntec. She serves on the Water and Natural Resources Steering Committee and the Women’s Network of Geosyntec Steering Committee, and she leads recruiting of new A+++ staff to support the growing water and natural resources practice. Renee earned an M.S. in Water Resources and Civil Engineering from the University of New Hampshire; a B.S. in Environmental Science from Plattsburgh State University of New York; and is a registered Professional Engineer in New Hampshire.

Ron Arcuri, P.G. (Pittsburgh, Pennsylvania)

Ron is a Senior Scientist with more than 28 years of experience providing innovative, cost-effective solutions to meet client business objectives across a range of environmental disciplines and practice areas. He has led project teams on six continents for clients in various sectors, including manufacturing, petrochemical, oil and gas, rail transport, government, and power generation. Ron joined Geosyntec seven years ago. Leveraging his international transaction expertise, Ron provides senior leadership in Geosyntec's involvement in the CAT Alliance. He earned an M.S. in Hydrogeology from Wright State University; a B.S. in Geology from Dickinson College; and is a registered Professional Geologist in Tennessee and Texas.

Sid Nadukuru, Ph. D., P.E. (Kennesaw, Georgia)

Sid has nine years of experience on projects involving the analysis, design, and inspection of waste containment facilities related to coal combustion residuals (CCR) impoundments, municipal solid waste facilities, low-level radioactive waste landfills, and contaminated sediments. Sid embraces Geosyntec's Sell-Manage-Do model with great passion and has continued to grow in every aspect of the model since he joined the firm nine years ago. He manages the Geotechnical and Geoengineering department in the Atlanta Branch and has made long-term significant contributions to one of our major client programs. His technical capabilities and strengths, combined with his positive attitude, make him one of the most sought-after individuals with whom to work and have earned him a spot on the Geotechnical and Geoengineering Steering Committee. Sid earned a Ph.D. in Geotechnical Engineering and an M.S. in Civil Engineering from the University of Michigan; a B.Tech. in Civil Engineering from the Indian Institute of Technology; and is a registered Professional Engineer in Michigan.

Spencer Varnado (Baton Rouge, Louisiana)

Spencer has 17 years of professional experience in environmental compliance, permitting, and biological investigations. Spencer will be celebrating 10 years of service with Geosyntec in July 2023 and is a critical leader in the permitting and planning group, as well as a go-to expert in the natural resources and permitting field across the company. His leadership has led to the capture of multiple systemwide environmental consulting contracts and multiyear projects with energy clients. He serves on the Water and Natural Resources Steering Committee and is building a fast-growing natural resources permitting and planning team. Spencer earned a B.S. in Biology, Ecology, and Environmental Studies from Southeastern Louisiana University.

Theresa Gabris, P.G. (Washington, D.C.)

Theresa has 11 years of experience in contaminant fate and transport, conceptual site modeling, and site remediation. She manages a wide range of projects with particular focus on those involving vapor intrusion (VI) over large groundwater plumes, working closely with other groundwater and VI leaders in the firm to advance the state of the science and addressing her clients' most challenging projects. Theresa joined Geosyntec seven years ago and quickly distinguished herself as a successful project manager, a leader of people, and a driver of the firmwide Vapor Intrusion Practice Group. Her contributions have included authoring the building-pressure cycling guidance for the Michigan Department of Environment, Great Lakes, and Energy. She recently took on the leadership role of managing the Washington DC office. Theresa earned an M.S. in Environmental Science and Policy from Johns Hopkins University; a B.A. in Geology from Hamilton College; and is a registered Professional Geologist in Virginia.

Todd DeJournett, Ph.D., P.E. (Minneapolis, Minnesota)

Todd has over 18 years of experience in water and wastewater treatment process design, helping clients in the mining, fuels, power, manufacturing, and municipal sectors make sound decisions regarding water and wastewater treatment and reuse. After joining Geosyntec five years ago, Todd leveraged his technical expertise, client relationships, and natural collaborative nature to develop a robust, sustainable, and diverse water practice that includes designing water treatment solutions for mining, silicon-chip manufacturing, automobile manufacturing, and specialty-chemicals manufacturing. He is the recipient of two Geosyntec Technical Advisory Council grants for fungal treatment of selenium in industrial wastewater as well as two seed grants from the Minnesota MnDRIVE program and a competitive research grant for removal of PFAS from landfill leachate. Todd earned a Ph.D. in Environmental Engineering from the University of Minnesota; an M.S. in Environmental Engineering from the University of Iowa; a B.S. in Civil Engineering from the Missouri University of Science and Technology; and is a registered Professional Engineer in Florida, Georgia, Minnesota, South Carolina, and Utah.

Wendy Key, P.G., CEM (Sacramento, California)

Wendy has 17 years of experience in environmental projects for public and private sector clients. She has experience in the management, planning, implementation, data analysis, and reporting phases of environmental assessments including ASTM-compliant Phase I Environmental Site Assessments, subsurface soil and groundwater investigations, and brownfield redevelopment projects. Wendy has established herself as a senior leader in the environmental management practice in the West Region, serving on the Environmental Management Steering Committee, mentoring and recruiting staff throughout the region, and expanding opportunities with current and new clients. She is also a GeoCompetencies and firm-culture ambassador. As a strong collaborator, she regularly works across branches and regions to best serve clients on fast-paced transactional diligence assignments. Wendy earned an M.S. in Geology from the University of Nevada; a B.S. in Geology from California State University; and is a registered Professional Geologist in California; Licensed Geologist in Washington; Certified Environmental Manager in Nevada; and a Certified Office Ergonomic Evaluator, HumanScale.

Whitney Law P.E. (Kennesaw, Georgia)

Whitney has more than 19 years of consulting experience focused in the areas of civil and environmental engineering. He has been involved with a range of projects related to site assessment, regulatory and environmental compliance and permitting, pollution prevention and waste management, design and implementation of in situ remediation systems, and management and acquisition of legal rights for natural resources for government and private sector clients. Whitney is a dedicated leader within one of our major client programs, serving since 2018 as the director for a portfolio of over ten groundwater compliance and remediation projects. He routinely provides growth and client interaction opportunities for many early- and midcareer professionals, successfully building Geosyntec's next generation of leaders. Whitney earned an M.S in Civil Engineering from Colorado State University; a B.S. in Environmental Engineering from the University of Georgia; and is a registered Professional Engineer in Georgia.