Contaminated Media Investigations and Assessments

Geosyntec Consultants applies reliable and innovative approaches to site investigations and assessments for clients with property or land holdings impacted by a wide array of known and emerging contaminants in soil, sediment, and groundwater. We also conduct investigations and discover the sources of air emissions, subsurface vapor intrusion into buildings, and contaminants found in surface waters.

Our assessment specialists include some of the most respected and sought-after professionals in the environmental remediation industry today. They possess the experience and technical skills needed to conceptualize and implement all aspects of contaminated media assessments and remediation programs. Using a multidisciplinary approach, Geosyntec brings together nationally recognized, in-house specialists in engineering, ecology and biological sciences, risk assessment and applied toxicology, and earth sciences to address the complex issues associated with contaminated media.

Our contaminated site practitioners guide our clients through a specialized remediation plan, consult on regulatory strategies, and develop a comprehensive cleanup approach. We can address numerous types of media, including contaminated soils, sediments, and groundwater, and offer numerous services including:

Groundwater Assessment and Remediation

Our expertise in efficient site characterization, including sites that exhibit complex groundwater flow regimes, has distinguished our firm and practitioners as leaders in the practice. Geosyntec's practitioners are highly skilled in the assessment and remediation of a broad suite of contaminants, including metals, chlorinated organic chemicals, petroleum hydrocarbons, and emerging contaminants, and utilize award-winning, technology-based remediation strategies that are often first to field. Read more

Sediment Assessment and Remediation

We specialize in the assessment and remediation of sites where sediments have been impacted by a wide range of contaminants including metals, crude oil and refined petroleum compounds, polynuclear aromatic hydrocarbons, pesticides, and PCBs. Our conservation, remediation, and restoration experience includes sites ranging from small, intermittent flow streams to large man-made and natural lakes, as well as complex river, estuary, and harbor systems. Read more

Brownfield Redevelopment Planning and Design

Working with public and private sector clients, Geosyntec provides innovative redevelopment strategies for brownfield sites worldwide. We provide services, including site identification, investigation, remediation design, permitting, and construction management, that are necessary to redevelop environmentally impacted properties so that they appropriately meet environmental stewardship goals and regulatory compliance. We solve our clients' most difficult brownfield redevelopment challenges using innovative environmental remediation approaches as well as geotechnical engineering solutions. Read more

Specialized In Situ Treatment Technologies

The effective application of our advanced in situ techniques enables our practitioners to remediate difficult-to-treat environmental impacts to soil, groundwater, and sediments for our clients. Our expertise enables us to be adept at expediting site investigations, optimizing remediation solutions, and accelerating site closure through the application of a wide range of innovative technologies. We specialize in the application of enhanced in situ bioremediation of solvent mixtures, recalcitrant solvents, perchlorates, and other compounds in groundwater and sediments. Read more

Risk Assessment and Applied Toxicology

Geosyntec's human health and ecological risk assessment services identify the proper approaches to remediate sites impacted by a wide variety of contaminants. Our risk assessment specialists work with our remediation practitioners to develop site-specific solutions that achieve the needed levels of protection while optimizing financial commitments and operational practicalities for our clients. Our specialists also provide expert consultation and testimony on environmental exposure health issues for our legal clients. Read more

Vapor Intrusion

As one of the preeminent firms for assessment and management of subsurface vapor intrusion to indoor air, our practitioners design innovative and cost-effective solutions to address our clients' most challenging projects. We specialize in providing services that include regulatory negotiation and litigation support, soil gas sampling, indoor air quality (IAQ) monitoring, mathematical modeling, customized mitigation system design and optimization, and ventilation assessment. Read more

Data Management, Visualization, and Analysis

Today's projects involving the natural and engineered environment require the collection, verification, validation, organization, visualization, and analysis of large sets of data from diverse sources. Our professionals develop systems that analyze disparate data in a common context and transform that data into actionable information. By providing a bridge to access and understand the conditions observed and aid decision makers, regulators, interested stakeholders, and the general public, we can generate a common understanding of complex site conditions and develop the methods to address them. Read more

Advancing the State of the Practice

Geosyntec's practitioners are pioneers in site assessment and remediation. Our senior practitioners have developed and authored guidance material and courses for local, state, and national agencies and associations on remediation techniques and technologies. Working with the Interstate Technical Regulatory Council (ITRC), Geosyntec practitioners taught a training course on vapor intrusion, including mitigation options for the development of vapor-impacted brownfield sites. Geosyntec practitioners also wrote the guidance document on evaluating, optimizing, or ending post-closure care at impacted sites, including brownfield sites, and developed a patented approach for sub-slab vapor migration mitigation allowing residential, commercial, and industrial development on sites impacted by vapor intrusion.

Our specialists routinely collaborate with prominent national researchers from academia and government agencies to provide innovative and defensible strategies for sites with contaminated sediments. For example, we collaborated with the U.S. Geological Survey (USGS) to remediate chlorinated solvent-contaminated marsh sediments by applying a bioreactive mat system embedded with a dehalogenating microbial consortium, a technology that Geosyntec helped develop. This project and partnership earned our client recognition as a finalist for the Service to America Medal awarded by the Partnership for Public Service.

Through a collaborative research project with the University of Florida, Geosyntec professionals assisted in the development of the FLUCL software package for the Florida Department of Environmental Protection. This software is used to calculate exposure point concentration statistics in risk assessment and was the first of its kind to contain algorithms for censored datasets. FLUCL has received endorsements from several U.S. Environmental Protection Agency (EPA) regions and the California EPA.

Geosyntec scientists also pioneered the use of genetic molecular tools for the characterization of the microbes in environmental media and are engaged in applied research and development with top academic institutions around the world, including the University of Toronto, Cornell University, and the Georgia Institute of Technology.

Lead Consultants

  • Nancy Bice, P.G., CEG
    Nancy Bice is a Senior Principal Engineering Geologist based in California with more than 20 years of experience focused on the characterization and remediation of sites impacted by volatile organi ...
  • Rula Deeb, Ph.D., BCEEM, PMP
    Rula Deeb is a Senior Principal Civil and Environmental Engineer based in California with more than 25 years of experience focused on private practice and academia addressing the cross-media fate a ...
  • 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 ...
  • Kwasi Badu-Tweneboah, Ph.D. P.E.
    Kwasi Badu-Tweneboah is a Principal Engineer based in Florida with more than 30 years of consulting and research experience focusing on the design and construction of containment systems for solid, ...
  • David Adilman, P.G.
    David Adilman is a Principal Hydrogeologist based in Massachusetts focused on the characterization and remediation of soil and groundwater as well as the design and implementation of large-scale co ...
  • Andrew Barnes, P.G.
    Andrew Barnes is a Principal Hydrogeologist based in California with more than 20 years of environmental consulting experience focused on remedial investigations, feasibility studies, groundwater r ...
  • David Bonnett, P.E., P.Eng.
    David Bonnett is a Principal Engineer based in Massachusetts with 30 years of experience focused on water and natural resources engineering and waste containment facility planning and design, inclu ...
  • Karen Kosiarek, P.E.
    Karen Kosiarek is a Senior Consultant Remediation Engineer based in Montana with more than 15 years of experience focused on the characterization and remediation of soil and groundwater contaminati ...
  • 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 ...
  • Michael Berman, P.E., CHMM
    Michael Berman is a Senior Principal Engineer based in Maryland with more than 18 years of experience focused on evaluating the nature and extent of environmental contamination or developing models ...
  • Warren Brady
    Warren Brady is a Principal Geochemist based in Louisiana with more than 20 years of experience focused on the assessment and remediation of industrial, municipal, and federal sites contaminated wi ...
  • J.F. Beech, Ph.D., P.E.
    Jay Beech is a Senior Consultant Engineer based in Georgia with more than 30 years of experience focused on design and construction of waste containment and subsurface barrier systems, sediment rem ...
  • Randy Brandt, P.G.
    Randy Brandt is a Senior Principal Geologist based in California with more than 25 years of experience focused on hydrogeology with special emphasis on the return of sites environmentally impacted ...
  • Karen Berry-Spark
    Karen Berry-Spark is a Senior Principal Hydrogeologist based in Ontario with more than 20 years of professional experience focused on the characterization and remediation of sites impacted by chlor ...
  • Paul Botek, P.G.
    Paul Botek is a Principal Geologist based in Maryland with more than 15 years of experience focused on the assessment and restoration of contaminated sites, provision of environmental management se ...
  • 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 ...
  • Haydar Azzouz, P.G.
    Haydar Azzouz is a Senior Consultant Geologist based in California with more than 20 years of experience focused on the maintenance and closure of municipal solid waste and hazardous waste landfill ...
  • 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 ...
  • Peter Zeeb, Ph.D., P.G., LSP
    Peter Zeeb is a Senior Principal Hydrogeologist based in Massachusetts with more than 20 years of experience focused on investigation and remediation strategy at some of the most challenging sites ...
  • Neal Durant, Ph.D.
    Neal Durant is a Senior Principal Engineer based in Washington, D.C. with more than 28 years of experience investigating, remediating, and managing complex contaminated sites. Neal serves ...
  • David Folkes, P.E.
    David Folkes is a Senior Principal Environmental Consultant based in Colorado with more than 35 years of experience focused on environmental and geotechnical consulting throughout the United States ...
  • Paul Brookner, P.G.
    Paul Brookner is a Senior Principal Hydrogeologist based in Minnesota with more than 25 years of experience focused as a regulator, consultant, and environmental manager for a multinational corpora ...
  • Greg Corcoran, P.E.
    Greg Corcoran is a Senior Principal Civil Engineer based in California with more than 25 years of experience with a focus on the design, construction, and operation of engineered systems for waste ...
  • 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 ...
  • David Espinoza, Ph.D., P.E.
    David Espinoza is a Senior Principal Geoenvironmental Engineer based in Maryland focused on foundation design over soft soils, design of regulated containment facilities, and more recently, financi ...
  • Sam Williams, P.G.
    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 ...
  • 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 ...
  • Nandra Weeks, P.E.
    Nandra Weeks is a Senior Principal Environmental Engineer based in Florida with more than 20 years of professional experience focused on the engineering and remediation issues associated with envir ...
  • Douglas Larson, Ph.D., P.E., LSP
    Doug Larson is a Senior Principal Civil and Environmental Engineer based in Massachusetts with more than 30 years of experience focused on the investigation and cleanup of hazardous waste sites thr ...
  • Mark Grivetti, P.G., CHG, CEG
    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 ...
  • Howard Cumberland
    Howard Cumberland, a Senior Principal at Geosyntec, is a Marine Scientist with more than 25 years of experience focused on remedial strategies for clients as well as developing and implementing rem ...
  • 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 25 years of experience focused on the ...
  • 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 ...
  • Keith Tolson, Ph.D.
    Keith Tolson is a Senior Principal Environmental Scientist based in Florida with more than 15 years of experience focused on environmental sciences. He Specializes in the application of risk-based ...
  • Gregory Gibbons, P.E.
    Gregory Gibbons, P.E., a Principal at Geosyntec, is an Environmental Engineer based in Illinois with more than 35 years of experience focused on the investigation and remediation of contaminated se ...
  • Julie Konzuk, Ph.D., PEng
    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 ...
  • 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 ...
  • Scott Drew, LSRP
    Scott Drew is a Principal Environmental Scientist based in New Jersey with more than 25 years of experience focused on the fields of environmental technology, site remediation, and environmental ch ...
  • Elaina Modlin, P.E.
    Elaina Modlin is a Principal Environmental Engineer based in Florida with more than 20 years of experience focused on a wide variety of environmental services including regulatory compliance and pe ...
  • Ruth Custance
    Ruth Custance is a Senior Principal Environmental Scientist based in California with more than 20 years of experience focused on the development and effective communication of risk-based approaches ...
  • David Reynolds, Ph.D., PEng
    David Reynolds is a Senior Principal Environmental Engineer based in Ontario focused on the development and implementation of groundwater remediation technologies and management strategies for comp ...
  • 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. ...
  • Bertrand Palmer, Ph.D., P.E.
    Bertrand Palmer is a Senior Principal Engineer based in California with more than 20 years of experience focused on developing innovative approaches and designs for projects involving site assessme ...
  • Peter Dollar
    Peter Dollar is a Principal Hydrogeologist based in Ontario with more than 20 years of experience focused on site characterization, remediation strategy, remedial design and implementation, and ris ...
  • Scott Luettich, P.E.
    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 the ...
  • 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 ...
  • Neil Davies, C.Eng., P.E.
    Neil Davies is a Senior Principal Civil and Environmental Engineer based in Georgia with more than 25 years of experience focused on the environmental remediation of former industrial manufacturing ...
  • 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 ...
  • 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 ...
  • Scott Graves, P.E.
    Scott Graves is a Principal Engineer based in Texas with experience focused on geotechnical, environmental, and water resources engineering. Scott specializes in landfill design and permitting, was ...
  • Todd Creamer, P.G.
    Todd Creamer is a Principal Geologist based in New England with more than 20 years of experience in environmental consulting services, surface water hydrology, and oil and natural gas exploration a ...
  • 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 ...
  • Brent Miller, P.E.
    Brent Miller is a Senior Principal Chemical Engineer based in Washington with more than 24 years of consulting and industry experience focused on the evaluation, design, construction, operation, an ...
  • 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 ...
  • Hari Sharma, Ph.D., P.E., G.E.
    Hari Sharma is a Senior Principal Geotechnical Engineer based in California with more than 30 years of experience focused on the design and construction of waste containment facilities and geotechn ...
  • Marcus Ford, CGeol.
    Marcus Ford is a Senior Principal Hydrogeologist based in the United Kingdom with more than 20 years of experience focused on the assessment of contaminated land and groundwater remediation, partic ...
  • 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 ...
  • James Linton
    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 ...
  • 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. Cuneyt specia ...
  • 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 ...
  • 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 ...
  • Gary Wealthall, Ph.D.
    Gary Wealthall is a Senior Principal Hydrogeologist based in Toronto with more than 20 years of experience focused on contaminant hydrogeology research and practice. He advises regulatory authoriti ...
  • 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 ...
  • Daniel Schauer, P.G.
    Daniel Schauer is a Senior Principal Geologist based in Florida with over 24 years of geological, hydrogeological, and geotechnical engineering consulting experience focused on multidisciplinary en ...
  • Thierry Sanglerat, P.E.
    Thierry Sanglerat is a Senior Principal Civil Engineer based in California with more than 25 years of consulting experience focused on groundwater and soil remediation, brownfield site redevelopmen ...
  • Eric Nesbit, P.E.
    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 ...
  • Kenneth Fredianelli
    Kenneth Fredianelli is a Principal Construction Management Professional based in California with more than 30 years of experience focused on managing engineering, construction, and design/build pro ...
  • Denise Tripp
    Denise Tripp is a Senior Consultant based in Massachusetts with more than 30 years of experience focused on environmental assessment and remediation and litigation support projects for the paper, p ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Christopher Saranko, Ph.D., DABT
    Christopher Saranko is a Principal Senior Board-Certified Toxicologist based in Georgia with more than 15 years of experience focused on evaluating potential risks associated with exposures to chem ...
  • James Stout, BCES
    Jim Stout is a Senior Principal Environmental Scientist based in Texas with more than 31 years of experience focused on the effective management of environmental remediation projects for private an ...
  • Walter Grinyer, P.G.
    Walter Grinyer is a Senior Consultant Geologist based in California with more than 35 years of experience focused on geologic investigations. He has 20 years of experience as an environmental consu ...
  • Andrew Montgomery, P.E.
    Andrew Montgomery is a Senior Principal Engineer based in Georgia with more than 20 years of environmental consulting experience focused on developing regulatory and risk-based strategies to achiev ...
  • Robert Veenstra
    Robert Veenstra is a Principal Environmental Engineer based in Missouri with more than 30 years of experience focused on developing and managing complex soil, groundwater and sediment investigation ...
  • Tom Krug, P.Eng.
    Tom Krug is a Principal Environmental Engineer based in Ontario focused on the evaluation and development of innovative strategies and technologies for remediation of complex contaminated propertie ...
  • 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 ...
  • 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 ...
  • Dale Prokopchak, CIH, CSP
    Dale Prokopchak is a Principal Industrial Hygienist and Occupational Safety Specialist with more than 30 years of experience as a leader in industrial hygiene, safety, corporate environmental, heal ...
  • Anthony Goh, P.E.
    Anthony Goh is a Senior Consultant and Environmental Engineer based in Malaysia with more than 30 years of experience focused on consulting for multinational clients across Malaysia and Singapore a ...
  • Jamey Rosen, P.Geo.
    Jamey Rosen is a Principal Hydrogeologist based in Ontario with more than 15 years of experience focused on database design and management, geographic information systems (GIS), and remediation pro ...
  • Jim Wragg, FGS
    Jim Wragg is a Senior Principal Hydrogeologist based in Delph with more than 20 years of experience focused on the detailed investigation, assessment and remediation of contaminated soil and ground ...
  • 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 ...
  • Gregory Roush, P.G.
    Gregory Roush is a Principal Geologist based in Georgia with more than 30 years of experience focused on directing multidisciplinary projects involving site assessments and corrective actions at in ...
  • 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 ...
  • Bruce Sass, Ph.D.
    Bruce Sass is a Senior Consultant, Environmental Scientist, and Geochemist based in Ohio with more than 20 years of experience focused on the development and implementation of chemical process impr ...
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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