Overview of Contaminated Site Assessment and Cleanup

Our project experience spans hundreds of initiatives across the environmental remediation spectrum. Our project experience spans hundreds of initiatives across the environmental remediation spectrum.

Geosyntec practitioners rank among the world's top professionals in providing site assessment and remediation services at a wide range of impacted sites using innovative technologies and solutions that consistently advance the state of the practice.

Through our use of innovative technologies and solutions, we provide our public and private sector clients with a wide array of services to address their toughest challenges.

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.

Our Consultants

  • 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 and transport of contaminants, and the remediation of complex soil and groundwater sites impacted by non-aqueous phase liquids. She earned her doctorate in civil and environmental engineering at the University of California, Berkeley, where her research focused on substrate interactions of ga ...
  • 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 organic compounds. She specializes in innovative site characterization techniques, and the design and implementation of groundwater remediation systems. Nancy has developed site-specific soil and groundwater remediation applications for some of the most complex sites in California regulated under Californ ...
  • 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 groundwater remediation. He has served a highly diverse group of private and public sector clients directly, through industry associations, and through attorneys. More than 20 years ago, Mike's professional practice started in the areas of municipal and industrial wastewater treatment, water quality ...
  • 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, hazardous and radiological wastes, sediments, and surface impoundments. His clients include commercial waste disposal firms, municipal and local governments, petrochemical manufacturing, utility, pulp and paper processing industries, and land development firms in the Southeast and Midwest U ...
  • 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 remediation system conceptual design, hydrostratigraphic characterizations, landfill gas migration control, and the characterization and remediation of non-aqueous phase liquids (NAPLs) in groundwater. He specializes in managing complex multi-disciplinary remediation projects involving multip ...
  • 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 construction dewatering and landfill monitoring programs. He has expertise in the field assessment of hydrogeologic systems, applied groundwater modeling, the fate and transport of contaminants in groundwater, bioremediation, data acquisition, and demonstration of natural attenuation remediati ...
  • 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 contamination at industrial and commercial properties. Prior to relocating to Montana, Karen practiced in Southern California for 14 years. For more than 50 brownfield redevelopments, remediation sites, and landfills in Southern California, Karen provided design and consulting services. Her professiona ...
  • 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 worked extensively with large PRP groups within the CERCLA program. Susan is a recognized leader in the development of remedial approaches for waterways with contaminated sediments and associated floodplain soils. She has served as project manager for the feasibility study of one of the larges ...
  • 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, including environmental design, permitting, and construction oversight. He has significant experience with construction quality assurance (CQA) and construction management (CM) for the installation of geosynthetics and soil liners for waste management facilities and for remedial construction acti ...
  • 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 with metals, chlorinated solvents, and fuel hydrocarbons. He specializes in geochemical analysis and remedial systems design at sites impacted by metals. His consulting experience includes risk evaluation and recovery and capture plan design and implementation for the municipal solid waste, ...
  • 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 in the country, including CERCLA-regulated sites in New England and the Midwest, as well as numerous state-regulated sites. Specializing in site investigations, modeling, pilot tests, remedial strategy development/alternatives analyses, and full-scale remedy design for more than 20 years, Pe ...
  • 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 remediation, demolition and remediation of former industrial sites, and consulting on projects involving complex geotechnical and civil engineering issues. He has extensive experience managing complex projects involving municipal solid waste, hazardous waste, ash, coal combustion products, low-level ra ...
  • 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 by past industrial manufacturing activities and former military installations surplused through the Base Realignment and Closure (BRAC) process to productive uses. Randy specializes in development and implementation of soil and groundwater characterization programs for contaminated sites ass ...
  • 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 services, consulting on solid waste management facility permitting and closures, remediation construction management, and spring water supply studies. For the evaluation and selection of field investigation methods for subsurface investigation, Paul is considered a go-to professional. His clie ...
  • 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 for estimating environmental liabilities to support his clients' business decisions. Corporate managers, financial analysts, and industry counsel know that environmental conditions and their regulatory consequences can significantly impact their business decisions and ongoing operations. To ...
  • 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 unsaturated zone, including soil vapor extraction system design, vapor emission estimation, and subsurface contaminant vapor migration to indoor air. Robbie has extensive experience in assessing potential subsurface vapor intrusion to indoor air associated with former and current gasoline retail an ...
  • 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 chlorinated solvents and other dense non-aqueous phase liquids (DNAPLs) in soil and groundwater. Karen has developed site-specific remedies using in situ bioremediation, zero-valent iron, and related technologies at sites throughout North America. Karen's practice also focuses on the assessment a ...
  • 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 emerging and recalcitrant contaminants. In the development, feasibility evaluation and application of innovative in situ remediation technologies, Evan's projects include monitored natural attenuation (MNA), enhanced in situ bioremediation (EISB), in situ chemical oxidation (ISCO), and metal ...
  • 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 landfills, surface impoundments, and industrial and commercial facilities. He specializes in site investigations, feasibility studies, and remedial action plans for the long-term protection of environmentally impacted areas. He has managed site investigations and environmental response plans for cli ...
  • 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 industrial and commercial properties. Utilizing his experience in site characterization and innovative remediation programs to work with clients on converting impacted properties into community assets as commercial developments through Brownfields site redevelopment programs, Sam has worked ...
  • 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 environmentally-impaired property redevelopment. She also specializes in the design and implementation of environmental compliance and site remediation programs at municipal solid waste landfills, coal combustion product disposal sites, and other properties. Nandra has developed site-specific app ...
  • 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 as a consultant and advisor to multi-national corporations and government agencies on matters involving quantification, management, and remediation of environmental liabilities. His clients include information technology service companies, aerospace manufacturers, industrial chemicals manufacturers, ...
  • 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 and Canada. One of the nation's foremost experts on vapor intrusion (VI) evaluation and mitigation, Dave was invited by U.S. EPA to address the national Resource Conservation and Recovery Act meetings held in 2000 and 2002 on VI issues impacting sites throughout the country. Dave also was a ...
  • 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 including chlorinated solvents, creosote, and coal tars. He is a professional geologist with expertise in developing assessment, remediation, and closure strategies. Beau is a Registered Site Manager under the North Carolina Registered Environmental Consultant Program, the voluntary remediat ...
  • Keith Tolson, Ph.D.

    Keith Tolson is a Senior Principal Environmental Scientist with more than 15 years of experience focused on environmental sciences. He Specializes in the application of risk-based principles to support legal and regulatory requirements. Keith provides expert technical and strategic consultation on matters related to regulatory compliance and litigation. He also develops and supports public risk communication concerning the health effects of chemicals in air, water, soil, sediments, consumer p ...
  • 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 corporation. As a program manager for a Fortune 500 company, Paul has managed corporate environmental risk, financial reserves, and compliance reporting for a global portfolio of legacy manufacturing facilities. In this role, he led negotiations with U.S. state and federal agencies involving sites ...
  • 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, financial evaluation of infrastructure investments taking into consideration physical risks such as climate change. David's solid waste experience includes permitting of disposal facilities for municipal solid waste, construction demolition debris, and industrial manufacturing wastes/residuals; des ...
  • 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 permitting, risk management, environmental due diligence, and contaminated site assessment and remediation. Serving as Geosyntec's program director for transactional, regulatory compliance, and environmental permitting services for key clients in the energy and transportation sectors, Elaina's ...
  • 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 throughout the United States since 1985. He is a Licensed Site Professional (LSP) in Massachusetts and manages Geosyntec's five New England Branch offices, with a combined staff of over 70 engineers and scientists. Doug has designed and managed the implementation of a wide variety of remedial s ...
  • 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 complex sites with challenging hydrogeological conditions. Dave has served as project manager, director, or technical specialist on multiple site investigations, litigation support cases, remediation feasibility studies, pilot and full-scale remediation projects, and innovative technology developments a ...
  • Julianna Connolly, LSP

    Julianna Connolly is a Senior Principal Engineer based in Massachusetts with more than 10 years of environmental consulting experience focusing on risk-based closure for contaminated properties, human health risk assessment, vapor intrusion assessment and mitigation, and environmental due diligence. She manages Geosyntec's New England operation and consults for clients with responsibility for industrial facilities, solvent releases, petroleum releases, and former manufactured gas p ...
  • 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 clients and governmental agencies. Sean leads soil and groundwater characterization studies under both the federal CERCLA and RCRA and State programs throughout the western United States. He also manages the closure and reuse of contaminated properties formerly used in aerospace, forest produ ...
  • 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 containment facilities and brownfield sites impacted by contaminants in soil, soil gas, and groundwater.  During his career, he has become a recognized national expert in the design, permitting, and construction of liner and cover systems for municipal, industrial, mine, mill, and haza ...
  • Jeffrey Ahrens, P.E.

    Jeffrey Ahrens is a Principal Environmental Engineer based in North Carolina with more than 12 years of experience focused on environmental assessments; remedial system design and optimization; assessment and mitigation of the vapor intrusion pathway; environmental due diligence and liability valuation; and regulatory compliance.Among Jeff's key strengths is his broad experience helping clients manage investigations and corrective actions at complex sites contaminated by chlorinated so ...
  • 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 groundwater resource management, and engineering geology studies for a wide range of projects. He brings creative environmental solutions to the redevelopment of complex sites impacted by soil and groundwater contamination. Mark's worldwide experience in the investigation and remediation of comple ...
  • 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 groundwater containing recalcitrant compounds. As a consultant, Julie has directed, managed, or provided specialist technical support for multiple projects ranging from overall strategy development and site investigation to laboratory treatability studies, remedial design and implementation ...
  • 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 strategies to obtain cost effective closure and redevelopment for environmentally impacted properties. He specializes in applying innovative risk-based approaches to reduce the cost of site assessment and remediation activities. Tom has directed investigations and remedial strategy development for ...
  • 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 industrial and chemical storage operations. His considerable technical skills, experience, and knowledge of engineering management allow him to effectively lead multidisciplinary project teams for restoration programs at single sites and portfolios of sites throughout the Western United States ...
  • 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 chemistry. His practice focuses on the in situ remediation of organic compounds, including chlorinated solvents, explosives, and MTBE. His recent work in fractured rock environments has included the application of anaerobic bioaugmentation in mudstones and biosparging in karst. Over the course ...
  • 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 sediment remediation; evaluation of airborne biological contaminants; and remediation of groundwater in karst formations. Duane specializes in the development, selection, feasibility evaluation, design, and deployment of remedial solutions for hazardous, radioactive, and mixed-waste, contam ...
  • 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 manufacturing sector. Her clients include foundries, metal product manufacturing, rubber manufacturing, metal recycling facilities, malting operations, aerospace companies, automotive manufacturers, electroplating operations, municipal waste landfills, power industry, gas pipelines, railroads, and nucl ...
  • 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 for site assessment and remediation. Ruth has lead project teams in utilizing the latest risk assessment and data analysis technologies to optimize remedial approaches. These approaches provide adequate risk reduction while being cost-effective. She has provided critical input into the risk ...
  • 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 authorities and clients in the chemical, waste disposal, land development, and insurance industries. Specializing in the development and application of high-resolution site characterization methodologies for dense non-aqueous phase liquids (DNAPLs) in fractured bedrock aquifers and aquitards and in s ...
  • 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. Specializing in the evaluation of industrial wastewater and contamination assessment and the remedial design of sites impacted with chlorinated solvents, metals, pesticides, and petroleum products, Mike has spent his career developing cost effective environmental solutions for public and pri ...
  • 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, engineering process design, and quality assurance procedures. His clients include private and governmental entities in the United States, Japan, Canada, and Australia. Internationally recognized for his in situ remediation expertise, Bruce has established industry best practices for in situ che ...
  • 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 risk management. In particular, his professional practice focuses on the characterization and remediation of sites impacted by chlorinated solvents, petroleum hydrocarbons, and metals in soil and groundwater. His technical expertise is focused on the geochemistry of contaminated soils and groun ...
  • 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 conceptual and final design of engineered remediation measures for groundwater, soils, and sediments. Pete has performed comprehensive project management, team leadership, and a broad range of technical services for projects and facilities in 25 U.S. states and territories and the United Kingd ...
  • 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 redevelopment, waste management, and site closure. He has served as an expert witness and has provided deposition and trial testimonies for several cases in state and federal courts, including the United States Environmental Protection Agency and the United States Department of Justice. As a consultant, ...
  • 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 lead designer and/or project manager for the design, permitting, and construction of dozens of landfills located throughout North America. He has successfully led multi-disciplinary project teams for several large facilities, and has considerable expertise in conducting public hearings a ...
  • 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 remedial construction projects within budget and on schedule. His technical skills in design, problem solving, and process optimization have led to numerous innovative applications of proven technologies that resulted in cost savings to clients and accelerated remediation processes. Over the past ...
  • 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, and optimization of soil and groundwater remedial systems and processes for clients throughout the United States. He manages numerous projects regulated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), ...
  • 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 remedial investigation, design, and restoration solutions associated with contaminated sediments and waterfront development activities.  Howard routinely works with clients on strategic planning during negotiations with regulatory agencies and negotiations among other PRPs with divergent interests. ...
  • 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 engineering contracts for federal, municipal, and private clients throughout the U.S. and abroad. His practice focuses on construction management, construction engineering, landfill reclamation, construction QA/QC, and remedial system O&M. To assist his clients, Dan has used his geologic a ...
  • 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, waste site remediation, and construction management/construction quality assurance (CM/CQA) for public and private clients in the waste management, electric utility, and petrochemical industries, as well as redevelopment companies and hazardous waste site responsible parties (PRP groups). Scott ...
  • 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 mitigation of environmentally impaired properties, environmental compliance, due diligence (All Appropriate Inquiry), and cost-to-cure estimates. He also specializes in groundwater studies, contaminant fate and transport evaluations, and waste management. He is often tapped to serve as a technical ...
  • 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. Rich stands at the forefront of emerging environmental issues, especially where alleged chemical impacts or potential threats to drinking water supplies result in legal action. As state and federal regulations require drinking water supplies to be tested for a broader array of chemicals, and at lo ...
  • 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 sites, and the design of civil infrastructure projects located throughout the United States and Europe. Specializing in the management and technical direction of large multidisciplinary civil and environmental infrastructure projects, Neil's project experience includes treatment systems, pi ...
  • 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 and production. His work has focused on the characterization of and remedial strategy for industrial, institutional and residential properties impacted by chlorinated solvents and petroleum hydrocarbons. Specializing in vapor intrusion of volatile compounds into indoor air and LNAPL behavior ...
  • 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, institutional, and commercial business objectives, sometimes balancing the competing interests of a wide range of project stakeholders. He has engineering experience with expertise in water supply and treatment, site assessment, and remediation of soil, groundwater and non-aqueous phase liquid (N ...
  • 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 quantitative analysis of flow of groundwater and soil-gas. Gordon developed groundwater flow models as tools for assessing water resources, engineering design alternatives, and remedial options for numerous projects throughout the United States. Additionally, Gordon has conducted testing for design and perf ...
  • 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 assessments; remediation design and treatment system optimization; environmental management systems; sustainable remediation designs; and regulatory compliance. For decades, a wide range of industries have used chlorinated solvents as degreasing agents and similar commercial applications. In many ...
  • 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 sediment sites. Greg's experience has included technical and project management roles for a variety of environmental projects including sediment and upland site investigation and remediation efforts, water resources, wastewater treatment, and potable water treatment as well as technical suppor ...
  • 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, petroleum, nuclear power, and manufacturing industries across the United States. As a consultant, Denise's practice focuses on technical analyses related to hydrogeologic factors that affect groundwater flow and contaminant transport from hazardous waste disposal sites in support of litigatio ...
  • 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, particularly properties impacted by past industrial operations. He has applied his expertise across a broad range of sites including those with contamination by pharmaceutical wastes, chlorinated solvents, petroleum hydrocarbons, and organic chemical residuals. To help clients understand and prior ...
  • 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 investigations, remedial strategy development, biological population studies, wetland restoration, phytoremediation and regulatory compliance. Jim has developed feasibility studies and innovative remediation solutions for manufacturing facilities in the pesticide, electronics, and aerospace industr ...
  • 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 regulatory compliance for the private and public sector. His practice focuses on providing multi-component remedies and risk mitigation for the cleanup of Recognized Environmental Conditions (RECs) sites and properties impacted by chlorinated solvents, petroleum hydrocarbons, pesticides, asbest ...
  • 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 assessment, remedial investigation, feasibility study, chemical fate and transport analysis, risk assessment, and soil and groundwater remediation. He is experienced in remediation system design, construction, operation, monitoring, and maintenance. With more than 20 years experience in geotechnical ...
  • 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 clients include major electric utilities based in the Midwest and Mid-Atlantic states as well as PRP groups. John's practice focuses on all aspects of the permitting, design and remedy implementation of Superfund (CERCLA) and RCRA projects. He has led many projects and provided professional consu ...
  • 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 fate of dissolved organic compounds, well-field design, aquifer testing and analysis, hydrogeologic field investigations, development of conceptual hydrogeologic models, and the design of advanced groundwater remediation systems. In his role as a technical lead on modeling studies or expert co ...
  • 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 chemicals in the environment, the workplace, and consumer products. As a consultant, Chris conducts chemical fate and transport analyses of pollutants emitted by a variety of industrial sources and consumer products to develop exposure and dose estimates. He also has experience evaluating potent ...
  • 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 specializes in the management of large, multi-disciplinary projects and programs, often regulated by federal and state regulations such as RCRA, CERCLA, Georgia HSRA, and Alabama RBCA. He has been involved with site assessment, remediation, environmental due diligence, regulatory compliance, design, and c ...
  • 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 and remediation programs associated with large petroleum facilities (refineries, terminals, tank farms, E&P properties, etc.) and chemical manufacturing facilities and former manufactured gas plants under the requirements of RCRA Corrective Action, CERCLA, and numerous state-lead programs. ...
  • 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 with solid and hazardous waste landfills as well as power generation and manufacturing facilities. Bob's consulting services focus on the strategic management of environmental liabilities, working with private sector clients who want to reduce financial exposures associated with cleaning up ...
  • 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 and public sector facilities, including Superfund sites. Jim has extensive experience in providing clients solutions to their environmental challenges through site investigations and the implementation of corrective actions. His primary clients include those in the petroleum, municipal solid waste, an ...
  • 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 geotechnical structures and foundations in seismically active areas. Hari has been a leading practitioner in the engineering design, permitting, and closure of hazardous, industrial, and municipal waste landfills. He has pioneered design techniques widely used today for liner, leachate collection, a ...
  • 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 achieve cost-effective site closure and redevelopment of properties impacted with chlorinated solvents, metals, and petroleum hydrocarbons. In addition, he works with Fortune 500 companies to develop and implement environmental management programs. During the past decade, Andrew has managed and pe ...
  • 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 characterization, including groundwater, soil, and soil gas; and litigation technical support. She specializes in developing site remediation designs, regulatory compliance strategies, work plans, feasibility studies, corrective measures studies, cost estimates, design plans and specification ...
  • 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 by contaminants. Brian specializes in applied in situ remedial technologies, sediment remediation, data management, environmental forensics, and regulatory negotiation. Brian served as the project manager directing the investigation and remediation of a former aerospace manufacturing facilit ...
  • Robert Ferree, CPG

    Robert Ferree is a Principal Geologist based in Michigan with more than 30 years of experience focused on hydrogeologic investigations; remedial investigations; underground storage tank (UST) removal; soil and groundwater sampling plan preparation; soil and groundwater sampling in accordance with RCRA and CERCLA guidance; surface and down-hole geophysical methods; remediation system design; remedial system installation; slug test and aquifer test performance and analysis; and environmental si ...
  • 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 technologies. James has built his practice by providing clients with cost-effective solutions specifically tailored to solving their most challenging problems. James has extensive research and consulting experience in developing and engineering chemical and biological treatment technologies to addre ...
  • 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, health and safety program management, training, emergency response planning and implementation, and HAZWOPER compliance. His practice focuses on the development of environmental, health and occupational safety programs to protect workers, facility operating personnel, and the public. With a supp ...
  • 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 projects for clients in solid, industrial, and hazardous waste, natural gas, power, petroleum, and chemical manufacturing sectors. His project management responsibilities include contract negotiations, front-end design, detailed engineering design, design/build, construction management, start-u ...
  • 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 groundwater, working primarily with site owners from the industrial sector. Jim has direct, recent experience in corrective action program design and implementation, including regulatory negotiation, which places him among the leading consultants in this field in the UK. As a consultant, Jim has m ...
  • 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 project management. Jamey has managed data for projects and facilities throughout the United States and Canada. As an environmental hydrogeologist, his experience includes site characterization, statistical analysis, numerical modeling, and conceptual design of engineered remediation systems. J ...
  • 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, site characterizations for waste containment facilities, environmental soil and groundwater assessment, and remedial process optimization at industrial and federal facilities. Jimmy guides clients through the development of technical and regulatory strategies for solid waste permit applications ...
  • Daniel Duffy, P.E.

    Daniel Duffy is a Principal Practitioner based in Massachusetts with more than 28 years of experience focused on waste disposal facility siting, design, permitting, and construction; the post-closure use of former waste disposal sites; landfill gas system design and construction; hydrogeologic investigations and groundwater impact analysis of waste sites; the remediation of contaminated sites; facility decommissioning; and the construction of waste facilities and remediation systems. ...
  • 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, and groundwater contamination at industrial and commercial properties. With expertise in complex site characterization and environmental remediation projects, Eric uses state-of-the-practice technologies to help clients make better informed decisions regarding the remediation of contaminat ...
  • 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 consultant to public and private sector clients. Walt has served as project manager and provided technical direction for site investigations at more than 150 sites, including solid waste facilities, spill sites, wastewater evaporation ponds, and sites impacted by volatile organic compounds. In ad ...
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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