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Geosyntec has built a record of successful client service by attracting some of the most creative scientists and engineers from the graduate programs of leading universities around the world.

We retain staff by providing challenging projects and a management and professional development infrastructure to support innovation on behalf of clients. We also provide staff with ownership opportunities and other financial incentives that create continuous personal links between client service and corporate well-being.

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Alphabetical List of Senior Practitioners

Dan Heidenreich is a Senior Consultant Geologist based in Colorado with more than 20 years of experience focused on GIS data management and mapping. He also conducts 3D site visualizations,…
J. Chris Herin is a Senior Principal Hydrogeologist practitioner in the field of environmental risk management and minimization based in Florida with more than 30 years of environmental consulting experience,…
Susan Hill, P.E., a Senior Principal at Geosyntec, is an Environmental Engineer with more than 30 years of experience focused on the investigation and remediation of sediment mega sites. She…
Brian R. Hitchens is a Senior Principal Hydrogeologist based in California with more than 15 years of experience focused on the evaluation and improvement of groundwater and surface water impacted…
Beau Hodge is a Principal Geologist based in North Carolina with more than 25 years of experience focused on environmental site investigation and remediation with a focus on recalcitrant compounds…
John Hollar is a Principal Civil and Environmental Engineer based in Georgia with more than 25 years of experience advising a variety of industrial, power, and government clients in the…
George Hollerbach is a Senior Principal Engineer based in New Jersey with more than 35 years of experience focused on water and wastewater, remediation, construction management, environmental health and safety…
Michael Houlihan is a Senior Principal Engineer based in Maryland with more than 30 years of experience focused on industrial and municipal waste management, waste containment system design, geotechnical engineering,…
Christopher Hunt is a Senior Principal Geotechnical Engineer based in California with more than 20 years of experience focused on managing and supporting a wide variety of geotechnical and geoenvironmental…
Amer Hussain is a Principal Environmental Engineer based in California with more than 25 years of experience focused on groundwater assessment and remediation, regulatory compliance, and permitting. He specializes in…
Krzysztof Jesionek is a Principal Environmental Engineer based in California with more than 35 years of experience focused on solid and hazardous waste management, including facility design and closure, permitting,…
Jill Johnson is a Principal Hydrogeologist based in Florida with more than 17 years of experience focused on a wide range of environmental projects, including groundwater monitoring and reporting, contamination…
Mark Johnson is a Principal Engineer based in Washington, D.C. with more than 20 years of experience focused on earth site investigation and remediation, groundwater assessment and remediation, subsurface vapor…
Ronald Johnson is a Senior Principal Geotechnical Engineer based in California who has been focused on the most seismically active areas of the United States throughout his career. He has…
Todd Kafka is a Principal Hydrogeologist based in Florida with more than 23 years of professional experience focused on site assessment, remediation, and hydrogeological investigations for industrial, state, and federal…
Mike Kavanaugh is a Senior Principal Environmental Engineer based in California with more than 35 years of consulting experience focused on the areas of water quality, water treatment, and groundwater…
Jason Kerstiens is a Principal Civil and Environmental Engineer with over 17 years of experience providing process engineering, regulatory compliance, water resource optimization, and strategic planning services to industrial, municipal,…
Pete King is a Principal Engineer based in New England with more than 30 years of experience focused on the integration of environmental regulations and policies with his clients' industrial,…
Julie Konzuk is a Principal Environmental Engineer based in Canada with more than 10 years of experience focused on working with clients on the application of specialized technologies to remediate…
Karen Kosiarek is a Senior Principal Remediation Engineer based in Montana with more than 15 years of experience focused on the characterization and remediation of soil and groundwater contamination at…
Eric Kovich is a Senior Principal Engineer based in Florida with more than 20 years of professional experience focused in the areas of Health, Safety, Security, and Environment (HSSE) regulatory…
Richard Kraft is a Senior Principal Hydrogeologist based in California with more than 25 years of experience focused on diverse hydrogeologic and environmental investigation and remediation. Rich stands at the…
Ganesh Krishnan is a Senior Principal Engineer based in Georgia with more than 20 years of experience focused on water resources and geoenvironmental engineering. Ganesh specializes in design engineering, regulatory…
Jeffrey Kurtz is a Senior Geologist based in Colorado with more than 30 years of experience focused on geochemical assessments, site investigations, and environmental forensics. Helping clients to protect human…
Michael Lambert is a Senior Principal Hydrogeologist based in Pennsylvania with more than 10 years of experience focused on managing and implementing soil and groundwater investigations and remediations under both…
James Langenbach is a Senior Principal Environmental Engineer for Geosyntec Consultants based in Florida with more than 20 years of experience focused on assisting clients with environmental assessments; remediation design…
Doug Larson is a Senior Principal Engineer who has worked on the investigation and cleanup of hazardous waste sites throughout the United States since 1985. He is a Licensed Site…
Curtis Laush is a Senior Physical Chemist based in Texas with more than 20 years of professional experience focused on the detailed analysis, monitoring, tracking, and management of air emissions…
Marc Leisenring is a Principal Water Resources Engineer based in Oregon with more than 15 years of experience focused on stormwater master planning, watershed and storm system modeling, environmental data…
James Linton is a Principal Environmental Scientist based in Florida with more than 25 years of experience focused on site assessment and remediation. He specializes in innovative contaminated site investigations,…
Michael Lodato is a Principal Geologist based in Florida with more than 25 years of experience focused on the field of hydrogeology, site assessment, and remediation using innovative technologies. Specializing…
Scott Luettich is a Principal Geotechnical Engineer and Director of Engineering for Geosyntec's solid waste management practice based in New England. He has more than 25 years of experience as…
Leah MacKinnon is a Principal Engineer with more than 15 years of professional experience in the United States, Canada, and Europe focusing on remediation of groundwater containing recalcitrant compounds using…
Geosyntec Consultants
Geosyntec is a specialized consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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