Hydrogeological Characterization and Modeling

Understanding how water interacts with the surface and sub-surface environment at any contaminated location is critical to designing innovative and cost-effective remediation systems or site management strategies.

A thorough delineation and understanding of the geology and hydrogeology affecting any contaminated site strengthens the conceptual site model and provides the framework for design of a groundwater remedial program, if needed. Ultimately, hydrogeological characterization and modeling affects the performance of any remediation technologies deployed as a solution.

The purpose of these investigations and models is to determine flow directions, pathways, and rates of groundwater flow, potential receptors of groundwater, potential contaminants, and the extent of contamination in the subsurface environment. Our use of bold approaches to site conceptualization frequently challenge traditional or pre-conceived notions pertaining to characterization or remedial strategies.

Some of the field methods we employ include borehole exploration (including coring) and 2D or 3D mapping of surface features. For groundwater flow information, we monitor water elevations in wells and adjacent surface waters and perform aquifer tests using pumping or slug tests. We also conduct laboratory analysis of cores and borehole flowmeters. For subsurface chemistry, we collect soil and groundwater samples for analysis. If dense non-aqueous phase liquid (DNAPL) is present, we collect samples and measure the thickness of free product.

Geosyntec's sound, reliable data coupled with our novel thinking lead to a clearer understanding of site concepts by all parties. Cost-saving benefits to our clients are often found in our implementation of the innovative remedies that emerge from our analysis of a site's hydrogeological conditions.

Additionally, Geosyntec practitioners offer clients a wealth of site characterization experience conducted under a wide range of regulatory environments, ranging from state-led programs and projects regulated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Resource Conservation and Recovery Act (RCRA). Our professionals have the experience base and technical knowledge to effectively advocate innovative remedial strategies on behalf of our clients. 

Lead Consultants

  • Rula Deeb, Ph.D., BCEEM, PMP
    Rula Deeb is a Senior Principal Civil and Environmental Consultant based in California with more than 25 years of experience focused on private practice and academia addressing the cross-media fate ...
  • Michael Kavanaugh, Ph.D., P.E., BCEE
    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 groundwa ...
  • David Adilman, P.G.
    David Adilman is a Principal Geologist based in Massachusetts focused on the characterization and remediation of soil and groundwater as well as the design and implementation of large-scale constru ...
  • Andrew Barnes, P.G.
    Andrew Barnes is a Principal Hydrogeologist based in California with more than 30 years of environmental and hydrogeological consulting experience focused on complex site characterizations, feasibi ...
  • Michael Berman, P.E., CHMM
    Michael Berman is a Senior Principal Engineer based in Washington, D.C. with more than 25 years of experience focused on assessing, modeling, and quantifying the nature, extent, and cost of environ ...
  • Peter Zeeb, Ph.D., P.G., LSP
    Peter Zeeb is a Senior Principal Hydrogeologist based in Massachusetts with more than 25 years of experience focused on investigation and remediation strategy at some of the most challenging sites ...
  • Karen Berry-Spark
    Karen Berry-Spark is a Senior Principal Consultant based in Ontario with more than 30 years of professional experience focused on the characterization and remediation of sites impacted by chlorinat ...
  • Randy Brandt, P.G.
    Randy Brandt is a Senior Principal Geologist based in California with more than 30 years of management and technical experience with environmental and hazardous waste issues. He has focused on dev ...
  • Warren Brady
    Warren Brady is a Senior Principal Consultant based in Louisiana with more than 25 years of experience focused on the assessment and remediation of industrial, municipal, and federal sites contamin ...
  • Susan Hill, P.E.
    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 has wo ...
  • Robert Ettinger
    Robert Ettinger is a Senior Principal Environmental Scientist based in California with more than 20 years of professional experience focused on the fate and transport of contaminants in the unsatur ...
  • Evan Cox, M.Sc.
    Evan Cox is a Senior Principal Remediation Scientist based in Ontario with more than 15 years of experience focused on managing and directing soil and groundwater remediation projects dealing with ...
  • Neal Durant, Ph.D.

    Neal Durant is a Senior Principal Consultant based in Washington, D.C. with more than 28 years of experience investigating, remediating, and managing complex contaminated sites.

  • Todd McAlary, Ph.D., P.Eng., P.G.

    Todd McAlary is a Senior Principal Engineer with more than 30 years of international consulting experience focused on the evaluation of contaminant fate and transport in soil and groundwater.

  • David Folkes, P.E.
    David Folkes is a Senior Principal Environmental Consultant based in Colorado with more than 40 years of experience in environmental and geotechnical consulting with special expertise and experienc ...
  • Douglas Larson, Ph.D., P.E., LSP
    Doug Larson is a Senior Principal Engineer based in Massachusetts with more than 30 years of experience focused on the investigation and cleanup of hazardous waste sites throughout the United State ...
  • Michaye McMaster, M.Sc
    Michaye McMaster is a Senior Principal Remediation Scientist based in Ontario with more than 15 years of experience focused on the development, field testing, and general application of in situ bio ...
  • Duane Graves, Ph.D.
    Duane Graves is a Senior Principal Scientist based in Tennessee with more than 30 years of experience focused on environmental biotechnology; environmental forensics; in situ groundwater, soil, and ...
  • David Major, Ph.D., BCES
    David Major is a Senior Principal and the Managing Director of Savron based in Ontario with more than 30 years of experience focused on negotiating, managing and directing the development and deplo ...
  • Sam Williams, P.G., CHG
    Sam Williams is a Senior Principal Hydrogeologist based in California with more than 25 years of experience focused on the characterization and remediation of soil and groundwater contamination at ...
  • Beau Hodge, P.G.
    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 ...
  • Mark Grivetti, P.G., CHG, CEG, REA
    Mark Grivetti is a Senior Principal Hydrogeologist based in California with more than 30 years of experience focused on characterization and remediation of hazardous waste sites, surface and ground ...
  • Mary deFlaun, Ph.D., BCES
    Mary deFlaun is a Senior Principal Environmental Microbiologist based in New Jersey with more than 25 years of experience remediating recalcitrant organics and metals, including monitored natural a ...
  • Julie Konzuk, Ph.D., PEng
    Dr. Julie Konzuk is a Senior Principal Engineer based in Ontario with more than 20 years of experience focused on working with clients in Canada, Australia and the United States on developing and i ...
  • J. Chris Herin, P.G.
    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 ...
  • David Reynolds, Ph.D., P.Eng.
    David Reynolds is a Senior Principal Engineer and Australian Operations Manager based in Sydney. He specializes in the development and implementation of groundwater remediation technologies and man ...
  • Chriso Petropoulou, Ph.D., P.E., BCEE
    Chriso Petropoulou is a Senior Principal Environmental Engineer based in Illinois with more than 25 years of consulting experience focused on a wide variety of clients in the industrial manufacturi ...
  • Tom Peel, Ph.D.
    Tom Peel is a Senior Principal based in Florida with more than 20 years of experience focused on environmental science and engineering including the development of regulatory and risk-based strateg ...
  • Scott Drew, LSRP, LSE
    Scott Drew is a Senior Principal Environmental Scientist based in New Jersey with more than 25 years of experience focused on the fields of environmental technology, site remediation, and environme ...
  • Michael McGuire, P.E.
    Michael McGuire is a Senior Principal Environmental and Civil Engineer based in California with more than 30 years of experience focused on characterizing and remediating sites affected by past ind ...
  • Todd Hagemeyer, P.G.
    Todd Hagemeyer is a Senior Principal Hydrogeologist based in Georgia with more than 25 years of experience focused on development of environmental management solutions for the manufacturing and ser ...
  • Peter King, P.E., LSP, LEP
    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, insti ...
  • Bruce Marvin, P.E.
    Bruce Marvin is a Senior Principal Environmental Engineer based in California with more than 15 years of consulting experience focused on remediation strategy development, technology selection, eng ...
  • Michael Lodato, P.G.
    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. ...
  • Marcus Ford, CGeol.
    Marcus Ford is a Senior Principal Hydrogeologist based in the United Kingdom with nearly 30 years of experience focused on environmental liability management and the assessment and remediation of c ...
  • Sean Ragain, R.G.
    Sean Ragain is a Senior Principal Geologist based in Oregon with more than 25 years of experience focused on providing hydrogeologic and environmental consulting services to both private industry c ...
  • Peter de Haven, P.E.
    Peter de Haven is a Senior Principal Engineer based in North Carolina with 20 years of experience focused on site characterization, data management and analysis, numerical modeling, and both the co ...
  • Brent Miller, P.E.
    Brent Miller is a Senior Principal Chemical Engineer based in Washington with more than 28 years of consulting and industry experience focused on the evaluation, design, construction, operation, an ...
  • Todd Creamer, P.G.
    Todd Creamer is a Principal Geologist based in New England with more than 22 years of experience in environmental consulting services, surface water hydrology, and oil and natural gas exploration a ...
  • James Langenbach, P.E.
    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 assess ...
  • James Linton
    James Linton is a Principal Environmental Scientist based in Florida with more than 30 years of experience focused on site assessment and remediation. He specializes in innovative contaminated site ...
  • Thierry Sanglerat, P.E.
    Thierry Sanglerat is a Senior Principal Civil Engineer based in California with more than 30 years of consulting experience focused on groundwater and soil remediation, brownfield site redevelopmen ...
  • Cuneyt Gokmen, P.E.

    Cuneyt Gokmen is a Senior Principal Geoenvironmental Engineer with more than 20 years of experience focused in the areas of civil, geotechnical, and environmental engineering.

  • John Gallinatti, CHG
    John Gallinatti is a Senior Principal Hydrogeologist based in California with more than 25 years of experience focused on quantitative hydrogeology, including groundwater modeling, environmental fa ...
  • Eric Nesbit, P.E., CQM
    Eric Nesbit is a Senior Principal Environmental Engineer with more than 15 years of experience focused on program management, executing environmental remediation actions, removal actions, and remed ...
  • Robert Glazier, P.G.
    Robert Glazier is a Principal Environmental Consultant based in Maryland with more than 30 years of experience focused on site remediation, risk assessment, and environmental permitting associated ...
  • Brian Hitchens, P.G., CHG
    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 ...
  • John Seymour, P.E.
    John Seymour is a Senior Principal Civil Engineer based in Illinois with over 30 years of experience focused on site remediation, deep foundation engineering, and construction management. His clien ...
  • Gary Wealthall, Ph.D.
    Gary Wealthall is a Senior Principal Consultant based in United Kingdom with more than 25 years of experience focused on contaminant hydrogeology research and practice. He advises regulatory author ...
  • Jamey Rosen, P.Geo.
    Jamey Rosen is a Senior Principal Geoscientist based in Ontario with more than 20 years of experience focused on Geospatial Information Management System design and development. Jamey has built sys ...
  • Veryl Wittig, P.G., CHG
    Veryl Wittig is a Senior Principal Hydrogeologist based in California with more than 20 years of experience focused on complex environmental site assessment, hazardous materials management, and reg ...
  • James Wang, Ph.D., P.E.
    James (Yu-Sheng) Wang is a Principal Environmental Engineer based in Maryland with more than 18 years of experience focused on developing and applying innovative assessment and remediation technolo ...
  • Rich Kraft, P.G., CEG, CHG

    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.

  • Gordon Thrupp, Ph.D., P.G., CHG
    Gordon Thrupp is a Principal Hydrogeologist based in California with more than 25 years of experience focused on evaluating geological and hydrogeological conditions. He has specialized in quantita ...
  • Robert Veenstra
    Robert Veenstra is a Principal Environmental Consultant based in Missouri with more than 30 years of experience focused on developing and managing complex soil, groundwater and sediment investigati ...
  • Eric Smalstig, P.E.
    Eric Smalstig is a Senior Principal Engineer based in California with more than 25 years of environmental consulting experience focusing on industrial facilities (production and waste management) a ...
  • Lisa Van Tassell, P.E.
    Lisa Van Tassell is a Senior Principal Environmental Engineer based in California with more than 15 years of experience focused on soil and groundwater remediation systems; site investigation and c ...
  • Jim Wragg, FGS
    Jim Wragg is a Senior Principal Hydrogeologist based in the United Kingdom with more than 20 years of experience focused on the detailed investigation, assessment and remediation of contaminated so ...
  • Jimmy Whitmer, P.G., CHMM
    Jimmy Whitmer is a Senior Principal Geologist and Hydrogeologist based in Georgia with more than 30 years of experience directing multidisciplinary projects focused on water supply development, sit ...
  • Bruce Sass, Ph.D.
    Bruce Sass is a Senior Consultant based in Ohio with more than 20 years of experience focused on the development and implementation of chemical process improvements and environmental remediation te ...
  • Eric Tollefsrud, P.G.
    Eric Tollefsrud is a Principal Hydrogeologist based in Minneapolis with more than 25 years of environmental consulting experience focused on the characterization and remediation of soil, soil vapor ...
  • Phil Harvey, P.G.
    Phil Harvey is a Senior Principal Hydrogeologist based in Missouri with more than 38 years of experience focused on the evaluation and remediation of contaminated sites. Phil has assisted clients i ...
Geosyntec Consultants
Geosyntec is a 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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