/ 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

March23, 2015

Monday Afternoon Session, 1:00–5:00 PM PDT

1:00–1:30Introduction

1:00–1:10Welcome, opening, overview (Brian Schumacher, U.S. EPA ORD; Doug Grosse, DWG Consultants)

1:10–1:30Overarching 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)

1:30–2:30Technical Updates:Engineering issue papers relevant to VI and related topics.

1:30–1:50Passive samplers (Heidi Hayes,Eurofins Air Toxics)

1:50–2:10Soil excavation monitoring for VI (Helen Dawson, Geosyntec Consultants)

2:10–2:30Soil vapor extraction: Mitigation of vapor intrusion from subsurface sources over large areas(Bo Stewart, Praxis Environmental)

2:30–4:30Update on VI Research and Analyses: New evidence from existing studies with an emphasis on temporal variability and preferential pathways.

2:30–2:45A 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)

2:45–3:00Mass transfer concepts inpredicting VI: Large building examples(David Shea, Brad Green, and Daniel Carr, Sanborn, Head & Associates)

3:00–3:30Break

3:30–4:00ORD 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)

4:00–4:30Diagnosing vapor intrusion occurrence, impact, and contributing pathways(Paul Johnson et al., Arizona State University)

4:30–5:00Closing of Monday Afternoon Session

4:30–4:50Summary of postersavailable for review and open discussion on breaks and in evening session.Poster mini-presentations by Hatton, Lutes, Lund, Weinberg, Truesdale, and Stewart (seebelow for titles)

4:30–5:00Collection of questions for evening panel discussion (during closing/overview/mini-presentations)

4:50–5:00 Overview of data presented, Monday evening discussions, and Tuesdaypresentations(Henry Schuver, U.S. EPA ORCR)

Monday Evening Session, 7:00–9:00 PM PDT

1:00–7:00Posters 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).

7:00–8:00Evening Discussions:Includes questions collected online and in-person on Monday’s presentation topics.

8:00–9:00Continued Discussions (with Speakers) IncludingPoster Topics

March24, 2015

Tuesday Morning Session, 8:30 AM–12:00 PM PDT

8:30–8:40Welcome, opening, andoverview (Brian Schumacher, U.S. EPA ORD; Henry Schuver, U.S. EPA ORCR)

8:40 – 12:00Using the Evidence for Better Decision Making

8:40–9:30New Approaches and Techniques

8:40–9:00The value of proper diagnostics and pathway identification for radon mitigation systems—commercial and residential examples (Tony McDonald, A-Z Systems)

9:00–9:15Soil vapor extraction and subslab depressurization work together for successful mitigation of a series of commercial buildings (Loren Lund et al., CH2MHill)

9:15–9:30ESTCP research on optimization of vapor intrusion mitigation systems in large military buildings (Todd McAlary et al., Geosyntec Consultants)

9:30–10:00Long-Term Stewardship (LTS)

9:30–9:45Survey of LTS programs (state andfederal) (David Gillay, Barnes and Thornburg LLP)

9:45–10:00Example 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

10:30–10:50Residential building vapor intrusion lifecycle cost analysis (Ian Hers, Golder Associates)

10:50–11:10Nonresidential building vapor intrusion lifecycle cost analysis (Chris Lutes, CH2MHill)

11:10–11:50Other Considerations

11:10–11:30 Community perspectiveon nonquantitative aspects of assessment/mitigation decisions,including a recent school case and the need for early risk communication(Lenny Siegel, CPEO; Nate Burden, FICS)

11:30–11:50Update on soil gas mitigator’s standard and credential (Kyle Hoylman, Protech Environmental; Tony McDonald, AZ Solutions)

11:50–12:00Wrap Up: Where do we hope to be in one year? (Henry Schuver, U.S. EPA ORCR)

Vapor Intrusion Exposure – Long-Term Evidence-Based Protection & 1
Sustainability in Residential, Commercial, and Industrial Buildings