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 Maryland with more than 18 years of experience focused on evaluating the nature and extent of environmental contamination or developing models ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Todd McAlary, Ph.D., P.Eng., P.G.
    Todd McAlary is a Senior Principal Engineer with more than 25 years of international consulting experience focused on the evaluation of contaminant fate and transport in soil and groundwater. ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Poppy Staub
    Margaret "Poppy" Staub is a Senior Principal Geologist and Environmental Engineer based in Colorado with more than 20 years of experience focused on environmental compliance, Superfund site managem ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Kate Graf
    Kate Graf is a Senior Consultant based in Pennsylvania with more than 20 years of experience who focuses on providing air quality services to industrial clients. Her experience spans environmental ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Turgay Dabak, Ph.D., P.E.
    Turgay Dabak is a Principal Water Resources Engineer based in Washington, D.C. with more than 30 years of professional experience specializing in civil and environmental engineering, stormwater man ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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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