Vapor Intrusion Technical Guidance by State and Topic

As leaders in the assessment and management of subsurface vapor intrusion to indoor air, our practitioners maintain a comprehensive list of vapor intrusion guidance, and share it below to advance the state of the vapor intrusion practice.

Vapor Intrusion Guidance Quick Links

Select a state from the menu below or scroll down to browse the list of guidance.
Select a topic from the menu below or scroll down to browse the list of guidance.

Browse State Vapor Intrusion Guidance

Alabama Vapor Intrusion Guidance

Alaska Vapor Intrusion Guidance

Arizona Vapor Intrusion Guidance

California Vapor Intrusion Guidance

Colorado Vapor Intrusion Guidance

Connecticut Vapor Intrusion Guidance

Delaware Vapor Intrusion Guidance

Florida Vapor Intrusion Guidance

Georgia Vapor Intrusion Guidance

Hawaii Vapor Intrusion Guidance

Idaho Vapor Intrusion Guidance

Illinois Vapor Intrusion Guidance

Indiana Vapor Intrusion Guidance

Iowa Vapor Intrusion Guidance

Kansas Vapor Intrusion Guidance

Louisiana Vapor Intrusion Guidance

Maine Vapor Intrusion Guidance

Maryland Vapor Intrusion Guidance

Massachusetts Vapor Intrusion Guidance

Michigan Vapor Intrusion Guidance

Minnesota Vapor Intrusion Guidance

Mississippi Vapor Intrusion Guidance

Missouri Vapor Intrusion Guidance

Montana Vapor Intrusion Guidance

Nebraska Vapor Intrusion Guidance

New Hampshire Vapor Intrusion Guidance

New Jersey Vapor Intrusion Guidance

New Mexico Vapor Intrusion Guidance

New York Vapor Intrusion Guidance

North Carolina Vapor Intrusion Guidance

North Dakota Vapor Intrusion Guidance

Ohio Vapor Intrusion Guidance

Oklahoma Vapor Intrusion Guidance

Oregon Vapor Intrusion Guidance

Pennsylvania Vapor Intrusion Guidance

Rhode Island Vapor Intrusion Guidance

South Carolina Vapor Intrusion Guidance

South Dakota Vapor Intrusion Guidance

Tennessee Vapor Intrusion Guidance

Texas Vapor Intrusion Guidance

Vermont Vapor Intrusion Guidance

Virginia Vapor Intrusion Guidance

Washington Vapor Intrusion Guidance

West Virginia Vapor Intrusion Guidance

Wisconsin Vapor Intrusion Guidance

Wyoming Vapor Intrusion Guidance

Vapor Intrusion Topics

EPA Vapor Intrusion Links

Other Sources of Vapor Intrusion Guidance

EPA Vapor Intrusion Guidance

Other Vapor Intrusion Guidance

Vapor Intrusion - General

Johnson and Ettinger Model

Standards & Screening Levels

Indoor Air and Soil Vapor Sampling and Analysis

Indoor Air Background/Ambient Air

Vapor Intrusion and Petroleum Releases

Vapor Intrusion Sites

Conferences/Seminars/Workshops

Indoor Air Quality - General

Radon

Sampling and Analysis - General

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 ...
  • 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 ...
  • Helen Dawson, Ph.D.
    Helen Dawson is a Principal Civil and Environmental Engineer based in Washington, D.C. with more than 30 years of experience focused on private practice, academia, and public service. Her practice ...
  • 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 ...
  • 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. ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Susan Welt, M.P.H., P.E.
    Susan Welt is a Senior Engineer based in New York with almost 20 years of experience focused on the investigation and remediation of industrial sites, former manufactured gas plants (MGP), mining o ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Jeffrey Kurtz, Ph.D.
    Jeffrey Kurtz is a Senior Geologist based in Colorado with more than 30 years of experience focused on geochemical assessments, site investigations, and environmental forensics. Helping cli ...
  • 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 ...
  • 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 ...
  • 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 ...
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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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