Waste Management and Minimization Services

Geosyntec is recognized as a leader in helping our clients achieve safe, secure containment of their regulated wastes. We provide environmental management, groundwater assessment and remediation, traditional waste management, landfill gas management, leachate treatment, carbon credit, closed site, and expert services for a variety of waste management facilities, including landfills, surface impoundments, transfer stations, and material recycling facilities.

Our experience spans the U.S., Puerto Rico, Canada, Europe, and Asia, involving more than 600 facilities operating under a broad range of site, operational, and regulatory settings. We understand the technical, regulatory, and public relations issues associated with municipal solid waste (MSW), construction and demolition waste (C&DW), nonhazardous industrial solid wastes, hazardous waste, and other waste classes. Our goal is to provide our clients with solutions that address their waste capacity, compliance, economic/fiscal, and long-term environmental liability challenges.

Geosyntec has completed more than 2,000 landfill, environmental, and geotechnical projects throughout the United States. The projects have involved the full range of professional services required in the life cycle of a waste management facility, starting with siting and permitting and typically concluding with closure construction and, if not clean-closure, post-closure monitoring and care. In urban areas, where developable land is limited, we have also provided consulting services related to waste mining and the redevelopment of form er waste management facilities.

Lead Consultants

  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 containment facilities (e.g., municipal solid waste, mining ...
  • 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.

  • Paul Botek, P.G.
    Paul Botek is a Senior Principal Geologist based in Maryland with more than 15 years of experience focused on the assessment and restoration of contaminated sites, provision of environmental manage ...
  • Karen Kosiarek, P.E.
    Karen Kosiarek is a Senior Principal Remediation Engineer based in Montana with more than 22 years of experience focused on the characterization and remediation of soil and groundwater contaminatio ...
  • 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 ...
  • 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.

  • Michael Houlihan, P.E.
    Michael Houlihan is a Senior Principal Engineer based in Maryland with more than 30 years of experience focused on industrial and municipal waste management, waste containment system design, geotec ...
  • Paul Brookner, P.G.
    Paul Brookner is a Senior Principal Hydrogeologist based in Minnesota with more than 30 years of experience focused as a regulator, consultant, and environmental manager for a multinational corpora ...
  • 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 ...
  • Nandra Weeks, P.E.
    Nandra Weeks is a Senior Principal Environmental Engineer based in Florida with more than 30 years of professional experience focused on the engineering and remediation issues associated with envir ...
  • Poppy Staub
    Margaret "Poppy" Staub is a Senior Principal Consultant based in Colorado with more than 20 years of experience focused on environmental compliance, Superfund site management, pollution prevention ...
  • 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 ...
  • Kate Graf, PEE
    Kate Graf is a Principal Engineer based in Pennsylvania with more than 20 years of experience focused on providing air quality services to industrial clients. Her experience spans environmental eng ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Daniel Schauer, P.G.
    Daniel Schauer is a Senior Principal Geologist based in Florida with more than 34 years of geological, hydrogeological, and geotechnical engineering consulting experience focused on multidisciplina ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • James Stout, BCES
    Jim Stout is a Senior Principal Environmental Scientist based in Texas with more than 35 years of experience focused on the effective management of environmental remediation projects for private an ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Gregory Roush, P.G.
    Gregory Roush is a Senior Principal Geologist based in Georgia with more than 30 years of experience focused on directing multidisciplinary projects involving site assessments and corrective action ...
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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