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(0) VI Workshop Agenda:
Listing of times and titles for workshop presentations on March 14, 2005.
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(08:00) Preliminary Results of the Soil Gas Sampling Workshop:
Dave Bertrand, Geosyntec Consultants; Robert Truesdale, RTI; et. al.
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(08:30) A Practical Guideline to Vapor Intrusion - ITRC's Prospective:
John Boyer, NJDEP and Bill Morris, KSDHE.
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(09:00) Integrating Observed & Modeled Vapor Attenuation:
Doug Grosse, EPA ORD.
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(09:00) Introduction:
Welcome - Objectives & Overview. Henry Schuver, U.S. EPA, Office of Solid Waste
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(09:00) Introduction: Scope, Purpose, Objectives, Overview:
Henry Schuver, EPA Office of Solid Waste.
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(09:00) Welcome and Introductions:
Modeling Vapor Attenuation Workshop: A Study of Vapor Intrusion Modeling in the Context of EPA’s Guidance. Doug Grosse, EPA Office of Resear ...
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(09:00): Development, Review, and Use of US EPA’s Updated J&E Model Spreadsheet: A Workshop:
Doug Grosse, EPA ORD.
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(09:10) Evolution of OSWER Vapor Intrusion Guidance:
Current Status, Directions and Updates - Henry Schuver, EPA OSW; David E. Cooper, EPA OSRTI.
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(09:10) Role of Modeling & General Status of Revisions to EPA’s 2002 Vapor Intrusion Guidance:
Henry Schuver, EPA OSW.
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(09:15) Background, Indoor Sources, and Measurement Methods:
Use of Radon and Perfluorocarbons Measurements to Allocate VOCs Measured in Indoor Air Among their Various Sources. Ronald. B. Mosley, U.S. ...
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(09:15) Overview of Subject Areas:
Approaches & Methods Influencing Observational Data. Todd McAlary, GeoSyntec Consultants, Inc, Dave Mickunis, EPA Office of Research and Devel ...
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(09:15) Regulatory Context, Purpose, and Objectives:
Henry Schuver, EPA Office of Solid Waste.
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(09:30) Background, Indoor Sources, and Measurement Methods:
A COC Ratio Approach for Defining Extent of Vapor Intrusion and Background. David J. Folkes, P.E., EnviroGroup Limited
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(09:30) Status of Generic Screening Levels – Update on Empirical Vapor Attenuation Factor Analysis:
Ian Hers, Golder Associates; Helen Dawson, EPA; Robert Truesdale, RTI.
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(09:45) Background, Indoor Sources, and Measurement Methods:
Upward Vapor Intrusion Assessment: Real-time, Continuous Monitoring Data to the Rescue? Dr. Blayne Hartman, H&P Mobile Geochemistry
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(09:55) Proposed Changes to EPA’s OSWER Vapor Intrusion Pathway Evaluation:
Helen Dawson, EPA Region 8.
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(10:00) Background, Indoor Sources, and Measurement Methods:
Sub-Slab Air Sampling Protocol and Analysis to Support Assessment of Vapor Intrusion. Dr. Dominic DiGiulio, U.S. EPA, Office of Research and ...
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(10:00a) Empirical Attenuation Factors:
Predictions & Observational Data. Helen Dawson, Ph.D, US EPA Region VIII; Ian Hers, Ph.D, Golder Associates; Robert Truesdale, RTI Internation ...
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(10:00c) Empirical Attenuation Factors:
Example Data Sets. Robert Truesdale, RTI International.
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(10:15) Exterior Site Specific Screening Guidance:
Helen Dawson, EPA Region 8.
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(10:30) Review of Pre-existing Data:
Investigation of building-specific attenuation at Lowry Air Force Base. Helen Dawson, EPA Region 8.
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(10:45) Vapor Intrusion Database Status and Updates:
Robert Truesdale, RTI International; Helen Dawson, US EPA Region 8; Ian Hers, Golden Associates.
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(11:00) Attenuation at Residential Sites:
Comparing Air Measurements and Modeling Results at a Residential Site Overlying a TCE Plume. Presented by Wilson Doctor and Ronald J. Marnicio fo ...
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(11:00) Evaluation of Empirical Data for Soil Vapor Intrusion:
Ian Hers, Golder Associates; Helen Dawson, EPA; Robert Truesdale, RTI.
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(11:00) Observed Attenuation Factors - Chlorinated Hydrocarbon Data:
Vapor Intrusion in Endicott, NY: Observed Differences in the Concentrations of Chlorinated Volatile Organic Vapors (CVOCs) in Basement and Subslab Sam ...
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(11:00) Site-Specific Modeling and Observational Data:
Site-Specific Modeling in the Context of the OSWER Guidance? Paul Johnson, Ph.D, Lilian Abreu, Ira A. Fulton School of Engineering.
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(11:15) Updated J&E Model VIAModel.xls:
Helen Dawson, EPA Region 8.
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(11:20) Observed Attenuation Factors - Chlorinated Hydrocarbon Data:
Attenuation Factors and Multiple Lines of Evidence for Evaluation of Potential Vapor Intrusion Pathways - Experience with the Grants Chlorinated Solve ...
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(11:25) Revising the Empirical Attenuation Factors -Data Analysis & Preliminary Results:
Ian Hers, Golder Associates; Helen Dawson, EPA; Robert Truesdale, RTI.
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(11:30a) Attenuation at Residential Sites:
Observed Versus US EPA "Limited Site-Specific" Soil Gas-to-Indoor Air Attenuation Factors for a Site in a Semi-arid Climate. Loren Lund, PARSONS.< ...
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(11:30b) Attenuation at Residential Sites:
Observed Versus US EPA "Limited Site-Specific" Soil Gas-to-Indoor Air Attenuation Factors for a Site in a Semi-arid Climate - Winter Vertical Profile ...
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(11:40) Observed Attenuation Factors - Chlorinated Hydrocarbon Data:
Evaluation of Observed Groundwater to Indoor Air Attenuation Factors at the Redfield Site, Colorado. David J. Folkes, P.E., EnviroGroup Limit ...
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(13:00) Attenuation at Non-residential Sites:
Introduction for upcoming presentations. Henry Schuver, EPA Office of Solid Waste.
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(13:00) Evaluation of Uncertainty in the J&E Model:
Jim Weaver and Fred Tillman, EPA ORD.
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(13:00) MSRAS Soil Gas Sampling Workshop Introduction:
Why we are here and what we hope to accomplish, and how it ties in to VI Guidance in general and OSWER Guidance in particular. Doug Grosse, EPA an ...
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(13:00) Observed Attenuation Factors - Chlorinated Hydrocarbon Data:
Measured Vapor Attenuation Coefficients From Soil Gas to Indoor Air, Runcorn, Cheshire, UK. Todd McAlary, PE, PG, GeoSyntec Consultants, Inc. ...
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(13:00) Options for “Semi-Site-Specific” Alpha Value Determination:
Paul Johnson, Arizona State University.
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(13:05) Attenuation at Non-residential Sites:
Empirical and Modeled Alpha Factors at Two Vapor Intrusion Sites. Karen Berry-Spark, GeoSyntec Consultants, Inc.
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(13:15) Background of Ertel Site History:
John Clark, IDEM.
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(13:20) Observed Attenuation Factors - Building Effects:
Attenuation Factor Determination Using the Taga and Summas. David B. Mickunas, Chemist, US EPA/ERTC
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(13:30) Attenuation at Non-residential Sites:
Case Study of Modeled and Observed TCE Attenuation from Groundwater to Indoor Air. Chris Lawless, Johnson Wright, Inc.
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(13:30) Comparisons of Sub-Slab Soil Gas Measurements to Modeled Emissions Fom Subsurface Contamination:
John A. Menatti and Robin V. Davis, Utah Department of Environmental Quality.
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(13:30) Updated Vapor Intrusion Spreadsheet - Summary of Peer Reviewers’ Comments:
Robert Ettinger, GeoSyntec Consultants, Inc.
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(13:40) Observed Attenuation Factors - Building Effects:
Case Study of TCE Attenuation from Groundwater to Indoor Air and the Effects of Ventilation on Entry Routes. Alborz A. Wozniak, P.E., Weiss ...
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(13:40) Proposed Changes to EPA’s Spreadsheet Version of J&E Model:
Helen Dawson, EPA Region 8.
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(13:45) Passive Soil Gas and Subslab Vapor Sampling:
George Shaw, W.L. Gore & Associates.
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(14:00) Active Soil Gas Data Collection & Interpretation:
Blane Hartman, H&P Mobile Geochemistry.
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(14:00) Attenuation at Non-residential Sites:
Vapor Intrusion Attenuation Factors (AFs) - Measured vs. EPA Defaults A Case Study. Manu Sharma, Gradient Corporation.
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(14:00) Determining Vapor Concentration Data with Passive Sampling:
Jay Hodney and Harry S. Anderson II, W.L. Gore & Associates, Elkton, MD.
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(14:00) Examples of Data Collection Strategies and Methods:
Todd McAlary, GeoSyntec.
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(14:00) Observed Attenuation Factors - Building Effects:
Case Study of Subsurface Vapor Intrusion at a Dry Cleaner Site. Amy Goldberg Day, MPH, and Eric Nichols, P.E., LFR Levine Fricke
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(14:00) Vapor Intrusion Mitigation Engineering Controls: Comparison of Methods, Costs, and Implementation:
Susan B. Welt, BBL Sciences.
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(14:30) Attenuation at Non-residential Sites:
Case Study of Subsurface Vapor Intrusion at a Dry Cleaner Site. Amy Goldberg-Day, LFR Levine Frick.
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(14:30) Comparison of Gore Sorber to Active Soil Gas Data:
Jeff Kurtz, EnviroGroup, Ltd.
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(14:30) Engineering Controls of Vapor Intrusion:
Michael Geyer, KERNTEC Industries, Inc.
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(14:30) Mitigating Methane Gas Vapor Intrusion in New Residential Construction:
Michael D. Geyer, SCS Engineers, Long Beach, CA.
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(15:00) Observed Attenuation Factors - Building Effects:
Empirical Alpha Factors at "Wet Basement" Sites. Karen Berry-Spark, GeoSyntec Consultants, Inc.
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(15:15) 3D Model Simulations and Implications to Near Building Sampling:
Lilian Abreu, GeoSyntec Consultants, Inc.
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(15:20) Observed Attenuation Factors - Petroleum Hydrocarbon Data:
Attenuation of BTEX and MTBE in a Case Study of Residences. Julie A. Filosa Kabel, MPH, ENSR International.
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(15:20) Soil Gas Sampling Methods:
Todd McAlary, Geosyntec Consultants, Inc.
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(15:30) Attenuation at Non-residential Sites:
Copmparative Analysis of J&E Model and Sampling Results. Dave Mickunis, EPA Office of Research and Development
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(15:30) Attenuation at Non-residential Sites (video):
Mass Spectrometry Video Explaination. Dave Mickunis, EPA Office of Research and Development
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(15:30) Canadian Vapor Intrusion Guidance and Empirical Factors:
Ian Hers, Golder Associates.
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(15:30) Greenpoint, NY: Vapor Intrusion Case Study:
Jeff Caufield, Caufield & James LLC.
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(15:40) Field Studies of Oxygen and Hydrocarbon Vapor Transport Beneath and Around Buildings Located over NAPL Sources:
Paul Johnson, Arizona State University.
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(15:40) Observed Attenuation Factors - Petroleum Hydrocarbon Data:
Investigation of Vapor Intrusion in Homes over Petroleum-Contaminated Groundwater in Stafford Township, NJ. Dr. Paul F. Sanders, New Jersey ...
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(16:00) Observed Attenuation Factors - Petroleum Hydrocarbon Data:
Attenuation of Hydrocarbon Vapors from LNAPL Under Residential and Commercial/Industrial Buildings. Stephen Washburn, ENVIRON International ...
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(16:00) Soil Gas Sampling Methods and Approaches for Vapor Intrusion Assessments:
Key Issues. Blayne Hartman, H&P Moblie Geochemistry, Solana Beach, CA.
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(16:00) The Use of a Gas Vapor Barrier to Mitigate Subsurface Vapor Intrusion:
William V. Fritzsche, LBI Technologies, Inc.
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(16:00) Vapor Intrusion - Lessons Learned Through Numerical Simulation:
Paul Johnson, Arizona State University; Lillian Abreau, Geosyntec Consultants, Inc.
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(16:00a) Soil Gas Analytical Methods:
Blayne Hartman, H&P Mobile Geochemistry.
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(16:00b) Field Analytics to Resolve Vapor Intrusion Issues:
David Mickunas, EPA.
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(16:00c) Forensic Analysis and Sorbent Collection Methods:
Gina Plantz, NewFields Environmental Forensics Practice, LLC.
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(16:05) Testing Exterior Tier 3 Screening with Site Data:
Ian Hers, Golder Associates.
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(16:20) Observed Attenuation Factors - Petroleum Hydrocarbon Data:
Vapor Intrusion Attenuation Factors for Hydrocarbons Associated with a Diesel Spill. Lindsay Breyer, CIH, Walsh Environmental Scientists and ...
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(16:30) How to Determine Interpret and Resolve Background Concentrations:
Todd McAlary, GeoSyntec; Helen Dawson, EPA Region 8.
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(16:30) Use of the EPA Vapor Intrusion Model to Calculate Risk-Based Soil-Gas Concentrations:
Mark E. Kelley, Batelle Memorial Institute.
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(19:00) Closing Session:
Role of modeling in VI guidance. Henry Schuver, EPA Office of Solid Waste.
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(19:00) Evaluation of the “Constrained Version” of the J&E Model and Comparison of Soil-Gas and Sub-Slab Air Concentrations at the Raymark Superfund Site:
Dominic DiGiulio, EPA ORD.
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(19:30) DTSC Perspective on Vapor Intrusion:
How California's Guidance Differs from USEPA 2002 and Other Published Guidance - Daniel Gallagher, California Department of Toxic Substances Contr ...
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(19:40) PART I - Near-Building and Subslab Sampling at the Endicott (NY) Site, Implications for Site Screening Approaches:
Bill Wertz, NYSDEC.
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(19:40) PART II - Near-Building and Subslab Sampling at the Endicott (NY) Site, Implications for Site Screening Approaches:
Bill Wertz, NYSDEC.
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(19:45) Recommendations for Petroleum VI Pathway Screening Criteria:
Victor Kremesec, Atlantic Richfield Company.
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(19:45) Summary of Approaches and Methods:
Future Directions for Assessing Vapor Intrusion. Todd McAlary, GeoSyntec Consultants, Inc.
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(20:00) First there was Endicott...:
Krista Anders, NYSDOH.
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(9:30) Vapor Intrusion Updates & “Hot topics”:
Blayne Hartman, H&P Mobile Geochemistry.
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00 Workshop agenda:
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01- Introduction to the Vapor Intrusion Pathway:
Paul Johnson, Arizona State University
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01 Introductions:
Doug Grosse, U.S. EPA
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01 Loss/gain from Tedlar bags and other sampling equipment:
Cynthia Paul, U.S. EPA
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01- Recommendation for Improved Characterization of the Groundwater Vapor Intrusion Source Term:
Henry Schuver, U.S. EPA - OSW, Washington, D.C.
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01- Welcome, Introduction, and Overview:
Doug Grosse, EPA Office of Research and Development
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02 Evaluation of vapor equilibrium and purging on soil-gas sampling:
Dominic DiGuilio, U.S. EPA
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02- Overview of VI Guidance - as of 2002:
Henry Schuver, EPA Office of Solid Waste
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02- Update and General Status of EPA's Guidance:
Henry Schuver, EPA OSWER
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02 Use of soil-gas data in vapor intrusion decisions:
Henry Schuver, U.S. EPA
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02- Vapor Intrusion: Lessons Learned on Sampling and Data Interpretation:
G. Todd Ririe, BP America Inc., La Palma, CA
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03- ITRC VI Practical Guideline -- What It Is, and What It Is Not:
John Boyer, New Jersey Department of Environmental Protection
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03- Overview of VI Guidance - as of 2007:
Bill Morris, Kansas DHE
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03 Purpose of workshop on soil-gas sample collection and analysis:
Dominic DiGuilio, U.S. EPA
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03 Single-interval gas permeability testing:
Dominic DiGuilio, U.S. EPA
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03- Soil Vapor Sampling Methods: Are You Achieving Your Data Quality Objectives?:
Christopher Gale and Veryl Wittig, Geosyntec Consultants, San Diego, CA; Barry Pulver, County of San Diego, San Diego, CA
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04 A conceptual understanding of leakage during soil-gas sampling:
Dominic Diguilio, U.S. EPA and Blayne Hartman, H&P Mobile Geochemistry
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04- New York Approach to Background in VI Investigations:
Krista Anders, New York State Department of Health (NYS DOH)
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04- Overview of Indoor Air "Background" Concentrations & Overview of VI Database:
Helen Dawson, EPA Region 8
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04 Overview of soil gas probe emplacement & sampling methods:
Blayne Hartman, H&P Mobile Geochemistry
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04- Oxygen Transport from the Atmosphere to Soil Gas Beneath a Slab-on-Grade Foundation Overlying Petroleum-Impacted Soil:
Paul D. Lundegard, Fullerton, CA; Paul C. Johnson and Paul Dahlen, Arizona State University, Tempe, AZ
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05 Available laboratory methods for soil-gas analysis:
Gina Plantz, NewFields Environmental Forensics Practice, L.L.C.
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05- Empirical Data on Lag time for VI from a Chlorinated VOC Groundwater Plume:
Jeffrey P. Kurtz and David J. Folkes, EnviroGroup Limited, Centennial, CO
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05 EPA research on other active methods:
Brian Schumacher and John Zimmerman, U.S. EPA
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05- Literature Review and Compilation of Background Indoor Air Concentrations of Volatile Organic Compounds:
Helen Dawson, EPA Region 8
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05- Overview of EPA's 2002 Community Involvement Guidance:
Alana Lee, EPA Region 9
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06- California Perspective on Background in VI Investigations:
Dan Gallagher, California Department of Toxic Substances Control
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06 Collection of soil gas on adsorbents & passive samplers:
Gina Plantz, NewFields Environmental Forensics Practice, L.L.C.
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06 Field and fixed laboratory analysis for VI investigations:
Blayne Hartman, H&P Mobile Geochemistry
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06- Overview of ITRC's Community Stakeholder Concerns:
Peter Strauss, PM Strauss & Associates
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06- Room by Room Sampling for the Identification of Indoor Sources of Chlorinated Solvents:
Bill Doucette and Andy Hall, Utah State Univeristy, Logan UT; Kyle Gorder, Hill Air Force Base Environmental Restoration Branch, Hill AFB, UT
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07 A new passive diffusion sampler (PDS) for soil gas sampling:
Cynthia Paul, John Wilson, and Ken Jewell, U.S. EPA
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07- Comparison of Indoor Air Data of Petroleum Hydrocarbons from VI Investigations to Indoor Air Background Data:
Gina Plantz, Haley and Aldrich
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07- Overview of Community Relations Guidance:
Krista Anders
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07 QA/QC considerations for the TAGA analysis:
Dave Mickunas, U.S. EPA (presentation)
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07 QA/QC considerations for the TAGA analysis:
Dave Mickunas, U.S. EPA (movie; associated with slide 7 of presentation)
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07- Temperature and Vapor Intrusion Evaluation:
Evelina Morales, Oklahoma Dept. of Environmental Quality, Oklahoma City, OK
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08- A Comparative Study of Passive and Active Soil Gas Measurement Techniques at a TCE Site:
Adrian C. Heggie, Parsons Brinckerhoff Australia, Sydney, Australia; Bill Stavropoulos, Leeder Consulting, Morningside, Qld, Australia
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08- EPA's Vapor Intrusion Database Contents- Introduction:
Helen Dawson, EPA Region 8
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08- Presentation: Stakeholders' Experiences and Recommendations from Mountainview, CA:
Jane Horton, Mountain View, CA
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08- Responses to Questions: Stakeholders' Experiences and Recommendations from Mountainview, CA:
Jane Horton, Mountain View, CA
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08 Summary & recommendations on soil-gas installation methods for site-specific conditions:
Robert Truesdale, RTI International
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08 Use of radon measurements to analyze vapor intrusion problems:
Ron Mosley, U.S. EPA
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09- Early Vapor Intrusion Lessons from Colorodo Department of Transportation:
Paul Johnson, Arizona State University
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09- Presentation: Stakeholders' Experiences and Recommendations from Providence, RI:
Robert Dorr, Providence, RI
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09- Risk Assessment Issues during Indoor Air and Sub-Slab Soil Gas Investigation for Vapor Intrusion:
Rafat Abbasi, Theodore Johnson, and Rebecca Chou, California EPA, Cypress, CA; William Bosan, California EPA, Glendale, CA
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1- Early History of Vapor Intrusion Research:
(presentation) Steven Amter, Disposal Safety, Inc.
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1- Introduction:
Henry Schuver, U.S. EPA, Office of Solid Waste.
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10- Lessons from Large Groundwater Plume Sites -- Redfield and Wall:
Ian Hers, Golder Associates
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10- New & Innovative Analytical Methods for Vapor Intrusion Assessments: On-site TO-15 & Automated Analyzers:
Blayne Hartman, James E. Picker, and Janis D. Villarreal, H&P Mobile Geochemistry, Carlsbad, CA
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10- Presentation: Stakeholders' Experiences and Recommendations from Hopewell Junction, NY:
Debra Hall, Hopewell Junction, NY
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10- Responses to Questions: Stakeholders' Experiences and Recommendations from Hopewell Junction, NY:
Debra Hall, Hopewell Junction, NY
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11- Groundwater/Subslab/Indoor Air Relationships at Lowry Air Force Base and Billings PCE:
Helen Dawson, EPA Region 8
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11- Presentation: Stakeholders' Experiences and Recommendations from Hillcrest, NY:
Bruce Oldfield, Hillcrest, NY
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11- Responses to Questions: Stakeholders' Experiences and Recommendations from Hillcrest, NY:
Bruce Oldfield, Hillcrest, NY
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12- Observations of Variability at Cortlandville and Endicott:
Justin Deming, NYS DOH
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12- Presentation: Stakeholders' Experiences and Recommendations from Phoenix, AZ:
Mary Moore, Phoenix, AZ
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12- Responses to Questions: Stakeholders' Experiences and Recommendations from Phoenix, AZ:
Mary Moore, Phoenix, AZ
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13- EPA's Vapor Intrusion Database -- Analysis of Attenuation Factors (Groundwater, Subslab, Soil Gas, and Crawlspace) from Multiple Sites:
Helen Dawson, EPA Region 8
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14- Lessons from petroleum Hydrocarbon and Chlorinated Solvent Sites Extensively Monitored for Vapor Intrusion:
Todd McAlary, Geosyntec Consultants
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15- Vapor Intrusion at Fractured Bedrock Sites:
Dave Mickunas, EPA Environmental Response Team
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2- Background, Indoor Sources, and Measurement Methods:
(presentation) Method and Location of Ground Water Sampling: Impact on Attenuation Factors for Assessing Impact on Vapor Intrusion -
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2- Indoor Air Vapor Intrusion Database:
Robert Truesdale, RTI International.
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24 August - Results and Conclusions - Soil Gas Sampling Workshop:
Concluding presentation for MSRAS soil gas sampling workshop includes sampling activities and preliminary results.
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3- Background, Indoor Sources, and Measurement Methods:
(presentation) Seasonal Variation in Observed Indoor Air Concentrations of 1,1-DCE Due to Vapor Intrusion at the Redfield Site, Colorad ...
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3- EPA's Vapor Intrusion Database Evaluation:
Helen Dawson, US EPA Region 8.
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4- Observed Attenuation Factors:
(presentation) Measured Versus Model Predicted Attenuation at ATK Dry Creek Road Site, Littleton, Colorado - Lindsay Breyer, CIH, W ...
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4- Vapor Attenuation Factor Studies - Methods and Results:
Ian Hers, Golder Associates.
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5- Empirical Data: Challenges and Future Directions.:
Todd McAlary, PE, PG, GeoSyntec Consultants, Inc.
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5a- Observed Attenuation Factors:
(presentation) The Fresh Water Lens and its Effects on Groundwater to Indoor Air Attenuation Coefficients - Todd McAlary, PE, PG, G ...
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5b- Observed Attenuation Factors:
(poster) The Fresh Water Lens and its Effects on Groundwater to Indoor Air Attenuation Coefficients - Todd McAlary, PE, PG, GeoSynt ...
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6- Regulatory Meaning and Goals - The Broader Context:
Henry Schuver, U.S. EPA, Office of Solid Waste
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6a- Observed Attenuation Factors:
(presentation) Approach for Development of Site-Specific Vapor Intrusion Attenuation Factors - Carolyn Mayer, Philip Services Corpo ...
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6b- Observed Attenuation Factors:
(poster) Approach for Development of Site-Specific Vapor Intrusion Attenuation Factors - Carolyn Mayer, Philip Services Corporation ...
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7- Chlorinated Solvent Soil Vapour Intrusion into Indoor Air at a Commercial Warehouse:
Adrian Heggie, GHD Pty Ltd.
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7- Observed Attenuation Factors:
(presentation) Attenuation of Subsurface Vapors into Indoor Air via a Septic Sytem Acting as a Preferential Pathway - Doug F. McRey ...
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8- Institutional Controls at Vapor Intrusion Sites:
Michael Sowinski, J.D., EIT – DPRA, Inc
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8- Observed Attenuation Factors:
(presentation) Empirical and Modeled Attenuation Factors and the Contribution of Preferential Pathways to Indoor Air Quality - Haro ...
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Abstracts:
A Study of Observed Vapor Intrusion Attenuation. 14th Annual West Coast Conference on Soils, Sediments and Water. March 15-18, 2004, Marri ...
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Agenda:
A Study of Observed Vapor Intrusion Attenuation. 14th Annual West Coast Conference on Soils, Sediments and Water. March 15-18, 2004, Marri ...
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Background, Indoor Sources, and Measurement Methods:
Vapor Intrusion and Indoor Air Sampling Using a Passive Technique - Dr. Jay W. Hodny, W. L. Gore & Associates, Inc.
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Background, Indoor Sources, and Measurement Methods:
Indoor Air as a Source of VOCs in Sub-Slab Vapor Samples - Thomas McHugh, John Conner, and Roger Pokluda. Groundwater Services, Inc.
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Charge Questions - Modeling Vapor Attenuation Workshop:
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Comparison of Empirical Attenuation Factors to Modeled Attenuation Factors:
(poster) Amy Sidell, Philip Services Corporation, Chris Waldron and Kim Prestbo, PIONEER Technologies Corporation.
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Discussion of Comments & Preliminary Plans for Responding:
USEPA’s (OSWER) 11/03 Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils.
By: Henry Schuver, US EP ...
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Ertel Site Description (5-1-06):
Ertel site setting and geology
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Ertel Site Maps with 7/24-26/06 sampling locations:
Two site maps in two file formats (jpg and TIFF) that show the sub-slab sample locations and the locations of the permanent soil gas samples, with res ...
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Ertel Site Photos:
Photos taken at the Ertel site during recent site activities.
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Ertel Soil Gas Data - 8-2-06:
Soil gas data taken from permanent and temporary (grab) probes, 7/24-26/06, Ertel Site, Indianapolis, IN
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Gore Sorber Data - 7-26-06:
Gore Sorber Total and Concentration Data Plots - Ertel Site, Indianpolis, IN.
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GORE TCE Survey:
Preliminary results of GORE Sorber survey at Ertel Site (7/06).
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Indoor Air Vapor Intrusion Database:
Presentation by Robert Truesdale (RTI International)
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Observed Attenuation Factors:
Comparison of Indoor Air Concentrations from Surface Flux Chamber to Modeled Concentrations from Subsurface Volatile Organic Compounds - Robert Ch ...
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Vapor Intrusion Guidance Comments & Database:
USEPA’s (OSWER) 11/03 Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils
Presentations of Comments ...
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VI Draft Guidance: Overview of Comments to November, 2002 OSWER VI Guidance:
Presentation by Michael Sowinski (DPRA, Inc.)
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VI Workshop Report:
Final report describing VI attenuation workshop, database, analysis of attenuation factors, precluding factors, and recommendations for VI Guidance mo ...
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Workshop Announcment:
Modeling Vapor Attenuation Workshop -- A Study of Vapor Intrusion Modeling in the Context of EPA’s Guidance
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Workshop Call for Papers:
Invitation to submit an abstract for consideration for presentation at an EPA-sponsored workshop on modeling the attenuation of contaminant vapors in ...
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