September 21, 2021

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Geosyntec Staff to Contribute to Virtual Conference on Advancements in Vapor Intrusion and Emerging Contaminant Air Quality Issues

Geosyntec staff served on the committee, will chair two sessions, and conduct four presentations at the Air & Water Management Association's virtual conference on Advancements in Vapor Intrusion and Emerging Contaminant Air Quality Issues on September 23-24, 2021.

Robert Ettinger (California) served on the committee and will chair two sessions.  Brian Ares (Michigan); Theresa Gabris, Travis Kline, MEM, BCES (Washington DC); and Chase Holton, Ph.D., P.E. (Colorado) will conduct presentations.

Robert Ettinger is a Senior Principal Environmental Scientist based in California with more than 20 years of professional experience focused on soil vapor extraction system design, vapor emission estimation, and subsurface contaminant vapor migration to indoor air. Robert has extensive experience in assessing potential subsurface vapor intrusion to indoor air associated with former and current gasoline retail and distribution, petroleum pipeline, and petrochemical manufacturing facilities.

Brian Ares is a Staff Professional specializing in groundwater geochemical analysis, vapor intrusion, and contaminated site investigation. He has experience in leading conventional subsurface and vapor intrusion investigations using techniques such as building pressure control and high-volume sampling. Brian specializes in utilizing aqueous geochemical modeling software to evaluate solute chemistry, contaminant fate and transport, and mineral-water interactions.

Theresa Gabris is a Senior Geologist based in Washington, D.C. with experience in contaminant fate and transport, conceptual site modeling, and site remediation. She manages projects involving vapor intrusion (VI), working closely with other VI leaders in the firm to advance the state of the science and apply advanced characterization technologies and approaches to address her clients' most challenging VI projects.

Travis Kline is a Senior Principal Toxicologist based in Washington, D.C. with more than 25 years of experience focused on human health risk assessment and applied toxicology. A board-certified environmental toxicologist, Travis has experience in litigation support developing novel approaches and solutions to the characterization of problematic exposures.

Chase Holton is a Senior Environmental Engineer based in Colorado with more than 10 years of research and consulting experience focused on contaminant fate and transport, including assessment and mitigation of the vapor intrusion pathway. He assists clients by applying and overseeing the implementation of advanced vapor intrusion sampling, assessment, and mitigation techniques, including real-time sampling and analysis, building pressure control, and high-volume sampling.

This year's virtual conference on Advancements in Vapor Intrusion and Emerging Contaminant Air Quality Issues will bring together internationally recognized scientists, engineers, regulators, and attorneys to share research and solutions on the latest developments in the investigation and mitigation of the vapor intrusion pathway, including indicators and tracers, toxicology, risk assessment, sampling and laboratory analysis, as well as the newly added topic of emerging contaminants.

The Air & Waste Management Association (A&WMA) is a nonprofit, nonpartisan professional organization enhancing knowledge and expertise by providing a neutral forum for information exchange, professional development, networking opportunities, public education, and outreach to more than 5,000 environmental professionals in 65 countries. A&WMA promotes global environmental responsibility and increases the effectiveness of organizations to make critical decisions that benefit society.

Geosyntec Participation

Session II: Innovative VI Investigative Techniques
Chair: Robert Ettinger, Geosyntec Consultants
Date and Time: Sept. 23, 2021 at 12:10-1:00 p.m. ET

Rapid and Effective Characterization of Building Susceptibility to Vapor Intrusion with Building Pressure Control
Presenters: Brian Ares, Theresa Gabris, Geosyntec Consultants
Date and Time: Sept. 23, 2021 at 12:10-1:00 p.m. ET

Lessons-Learned from Radon at a Chlorinated Vapor Intrusion Research House
Presenters: Chase Holton, Geosyntec Consultants; Yuanming Guo, Paul Dahlen, Paul C. Johnson, Arizona State University; Emma Hong Luo, Chevron
Date and Time: Sept. 23, 2021 at 2:30-4:30 p.m. ET

Session VI: The Importance of Sewers as Preferential Pathways
Chair: Robert Ettinger, Geosyntec Consultants
Date and Time: Sept. 24, 2021 at 11:30 a.m.-12:20 p.m. ET

A Theoretical Assessment of PFAS VI Potential
Presenters: Travis Kline, Geosyntec Consultants
Date and Time: Sept. 24, 2021 at 12:30-2:30 p.m. ET

Watch the Videos

More Information

About the event: Advancements in Vapor Intrusion and Emerging Contaminant Air Quality Issues
About A&WMA: https://www.awma.org/
For consultation regarding vapor intrusion, contact Robert Ettinger at This email address is being protected from spambots. You need JavaScript enabled to view it.
Learn more about Robert: Robert Ettinger – Geosyntec Profile