Vapor Intrusion Exposure:
Long-Term Evidence-Based Protection & Sustainability in
Residential, Commercial, and Industrial Buildings
The 25th Annual International Conference on Soil, Water, Energy, and Air—
March 23-24, 2015, San Diego, CA
Agenda
March 23, 2015
Monday Afternoon Session, 1:00–5:00 PM PDT
1:00–1:30
Introduction
1:00–1:10
Welcome, opening, & overview (Brian Schumacher, U.S. EPA ORD; Doug Grosse, DWG
Consultants)
1:10–1:30
Overarching context: Long-Term Stewardship (for as long as the source remains) as a
context for evaluating approaches and data (Henry Schuver, U.S. EPA ORCR)
1:30–2:30
Technical Updates: Engineering issue papers relevant to VI and related topics.
1:30–1:50
Passive samplers (Heidi Hayes, Eurofins Air Toxics)
1:50–2:10
Soil excavation monitoring for VI (Helen Dawson, Geosyntec Consultants)
2:10–2:30
Soil vapor extraction: Mitigation of vapor intrusion from subsurface sources over large
areas (Bo Stewart, Praxis Environmental)
2:30–4:30
Update on VI Research and Analyses: New evidence from existing studies with an
emphasis on temporal variability and preferential pathways.
2:30–2:45
A case for profiling soil and rock at VI sites: Total mass and mass flux as metrics (Daniel
Carr and David Shea, Sanborn, Head & Associates; Helen Dawson, Geosyntec
Consultants)
2:45–3:00
Mass transfer concepts in predicting VI: Large building examples (David Shea, Brad
Green, and Daniel Carr, Sanborn, Head & Associates)
3:00–3:30
Break
3:30–4:00
ORD VI-research duplex and Wheeler Building, Indianapolis—summary of evidence to
date: Temporal variability in long-term mitigation performance and before mitigation:
What causes it? (Brian Schumacher, John Zimmerman, U.S. EPA ORD NERL; Chris Lutes,
CH2MHill; Robert Truesdale, RTI)
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4:00–4:30
Diagnosing vapor intrusion occurrence, impact, and contributing pathways (Paul
Johnson et al., Arizona State University)
4:30–5:00
Closing of Monday Afternoon Session
4:30–4:50
Summary of posters available for review and open discussion on breaks and in evening
session. Poster mini-presentations by Hatton, Lutes, Lund, Weinberg, Truesdale, and
Stewart (see below for titles)
4:30–5:00
Collection of questions for evening panel discussion (during closing/overview/minipresentations)
4:50–5:00
Overview of data presented, Monday evening discussions, and Tuesday presentations
(Henry Schuver, U.S. EPA ORCR)
Monday Evening Session, 7:00–9:00 PM PDT
1:00–7:00
Posters Available for Review
Remote monitoring and management of vapor intrusion systems supporting structured
OM&M and efficient long term stewardship (Tom Hatton, Clean Vapor, LLC)
Building a vapor intrusion case: Use of multiple lines of evidence to support a site
conceptual model for TCE migration under a residential neighborhood (Nadine
Weinberg, Katherine Eyre, Darren Scillieri, ARCADIS).
A life cycle and cost analysis of preemptive mitigation, site characterization, and/or
vapor source reduction strategies at industrial VI sites with multiple buildings (Loren
Lund et al., CH2MHill).
A survey of vapor intrusion characteristics of nonresidential buildings—are industrial
buildings different? (Chris Lutes et al., CH2MHill)
A real-time VOC sensor for VI investigations: Recent research, planned field tests, and
potential future applications (Robert Truesdale and Li Han, RTI International).
Estimating mass flux to groundwater and vapor intrusion from SVE data and high
resolution measures of permeability and concentration (Bo Stewart, Praxis
Environmental).
7:00–8:00
Evening Discussions: Includes questions collected online and in-person on Monday’s
presentation topics.
8:00–9:00
Continued Discussions (with Speakers) Including Poster Topics
Vapor Intrusion Exposure – Long-Term Evidence-Based Protection &
Sustainability in Residential, Commercial, and Industrial Buildings
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March 24, 2015
Tuesday Morning Session, 8:30 AM–12:00 PM PDT
8:30–8:40
Welcome, opening, and overview (Brian Schumacher, U.S. EPA ORD; Henry Schuver, U.S.
EPA ORCR)
8:40 – 12:00
Using the Evidence for Better Decision Making
8:40–9:30
New Approaches and Techniques
8:40–9:00
The value of proper diagnostics and pathway identification for radon mitigation
systems—commercial and residential examples (Tony McDonald, A-Z Systems)
9:00–9:15
Soil vapor extraction and subslab depressurization work together for successful
mitigation of a series of commercial buildings (Loren Lund et al., CH2MHill)
9:15–9:30
ESTCP research on optimization of vapor intrusion mitigation systems in large military
buildings (Todd McAlary et al., Geosyntec Consultants)
9:30–10:00
Long-Term Stewardship (LTS)
9:30–9:45
Survey of LTS programs (state and federal) (David Gillay, Barnes and Thornburg LLP)
9:45–10:00
Example application of LTS for the CVI pathway (and VOC sources) (Megan Hamilton,
EnviroForensics)
10:00–10:30
Break
10:30–11:10
Equally Protective Alternatives: Science and economic evidence to compare early
mitigation with extensive investigation, residential and industrial/commercial scenarios
10:30–10:50
Residential building vapor intrusion life cycle cost analysis (Ian Hers, Golder Associates)
10:50–11:10
Nonresidential building vapor intrusion life cycle cost analysis (Chris Lutes, CH2MHill)
11:10–11:50
Other Considerations
11:10–11:30
Community perspective on nonquantitative aspects of assessment/mitigation decisions,
including a recent school case and the need for early risk communication (Lenny Siegel,
CPEO; Nate Burden, FICS)
11:30–11:50
Update on soil gas mitigator’s standard and credential (Kyle Hoylman, Protech
Environmental; Tony McDonald, AZ Solutions)
11:50–12:00
Wrap Up: Where do we hope to be in one year? (Henry Schuver, U.S. EPA ORCR)
Vapor Intrusion Exposure – Long-Term Evidence-Based Protection &
Sustainability in Residential, Commercial, and Industrial Buildings
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