Brownfield Redevelopment Planning and Design

Working with public and private sector clients, Geosyntec provides award-winning redevelopment strategies for brownfield sites worldwide. From site identification, investigation, and remediation to design, permitting, and construction management, we provide the services necessary to redevelop an environmentally impacted property to an end use that meets environmental stewardship, regulatory compliance, and stakeholder needs. We solve our clients' brownfield redevelopment challenges using appropriate and efficient environmental remediation approaches as well as geotechnical engineering solutions.

Geosyntec approaches each brownfield site individually by tailoring investigations, risk assessments, and remediation approaches to the clients' planned end use. We work with stakeholders including regulators, developers, and insurance providers to realize the full economic and social value of their site and develop solutions amenable to all parties for any challenges that arise as development progresses. We provide stakeholders with start-to-finish consistency and reassurance that the environmental elements of development are being managed by one firm because of our expertise in regulations, risk assessment, soil and groundwater remediation, soil vapor mitigation, geotechnical and geoenvironmental engineering, and solid waste and environmental management.

Specialized Experience with Brownfield Sites

Applications for Grants: Geosyntec offers assistance with grant application preparation and financial analyses for clients considering participation in government-sponsored brownfield programs.

Site Assessments: Our environmental management specialists perform site evaluations ranging from informal site walks and/or document reviews to formal Phase I due-diligence services in accordance with ASTM E 1527-05. If necessary, we provide follow up with Phase II site investigations.

Risk Assessments: Geosyntec's in-house toxicologists and risk assessment specialists work with developers to reduce the cost of redevelopment using three key strategies: 1) optimized site layout to separate receptors from environmental impacts, 2) use of engineering controls to manage contamination in place rather than costlier and more extensive removal or remedial measures, and 3) identify building or landscaping design features that provide cost-effective risk mitigation (e.g., aerated floors, grade-level parking, surface covers, etc.).

Geoenvironmental Engineering: Our geoenvironmental and geotechnical engineers develop design approaches to stabilize, contain, and control conditions beneath foundations to allow construction of buildings, parking lots, or other developed surfaces to meet end-use goals on previously unusable or unstable ground.

Vapor Mitigation: Geosyntec engineers mitigate solvent, petroleum, and methane vapors using a wide range of time-tested and innovative passive and active technologies, including traditional vapor barriers, our own patented sub-slab vapor venting system, and low-cost, highly efficient aerated floors.  We effectively disrupt the exposure route for indoor air, reducing potential hazards and allowing building development over impacted areas of the site. Our site-specific designs work hand-in-hand with the development team's foundation and architectural design elements. Geosyntec is performing leading research for the U.S. Department of Defense on vapor mitigation optimization.

Green Energy Solutions: Our engineers assess both the engineering and regulatory feasibility of green energy development on impacted sites. We provide permitting services, preliminary design, and site improvement recommendations to support wind and solar energy development.

Construction Services: Geosyntec's in-house construction services group provides constructability reviews, bid support, construction quality assurance, and construction management services.

Geosyntec's practitioners are advancing the state of the practice by writing the guidance documentation, teaching courses, and acquiring design patents that enable brownfield redevelopment. We authored or co-authored vapor intrusion guidance documents issued by several industry groups and State agencies, and have been members of the U.S Environmental Protection Agency (EPA) expert panel on vapor intrusion since its inception in 2000.

Geosyntec personnel have been key members of both Interstate Technical Regulatory Council (ITRC) working groups on vapor intrusion, and invited instructors for the classroom and web-based training that included thousands of regulators and other stakeholders. Our practitioners also wrote the guidance document on evaluating, optimizing, or ending post-closure care at impacted sites, including brownfield sites, and are working with regulators to incorporate our approaches into regulations.

Lead Consultants

  • Rudolph Bonaparte, Ph.D., P.E., D.GE, F.ASCE, NAE
    Rudy Bonaparte is a Senior Principal Engineer based in Georgia with more than 30 years of professional experience focused on the areas of: geotechnical and geoenvironmental engineering; contaminate ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Michaye McMaster, M.Sc
    Michaye McMaster is a Senior Principal Remediation Scientist based in Ontario with more than 15 years of experience focused on the development, field testing, and general application of in situ bio ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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; ass ...
  • 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 ...
  • 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 ...
  • Mary deFlaun, Ph.D., BCES
    Mary deFlaun is a Senior Principal Environmental Scientist based in New Jersey with more than 20 years of experience focused on the development and implementation of in situ remediation technologie ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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) remov ...
  • Krzysztof S. Jesionek, P.E.
    Krzysztof Jesionek is a Principal Environmental Engineer based in California with more than 35 years of experience focused on solid and hazardous waste management, including facility design and clo ...
  • 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 ...
  • James Cowart, P.E.
    James Cowart is a Senior Consultant based in Colorado with more than 35 years of experience focused on water quality permitting, industrial wastewater treatment, and watershed management throughout ...
  • 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 ...
  • Eric Smalstig, P.E.
    Eric Smalstig is a Senior Principal Engineer based in California with more than 20 years of environmental consulting experience focusing on industrial facilities (production and waste management) a ...
  • 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 ...
  • Melissa Schmitt, P.E.
    Melissa Schmitt is a Principal Environmental Engineer based in Washington State with more than 10 years of professional experience focused on contaminated site assessment, remediation, and regulato ...
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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