Field Methods to Distinguish between Vapor Intrusion and Indoor Sources of VOCs

Type: On-Demand Video

Vapor Intrusion Short Course

Migration of vapors from chlorinated solvent groundwater plumes into surface and sub-surface structures has become a concern in recent years. However, the detection of volatile organic compounds (VOCs) in indoor air samples does not necessarily indicate vapor intrusion, as background sources of VOCs are ubiquitous.

To help practitioners in designing effective investigations, a short course detailing innovative methods for distinguishing between vapor intrusion and indoor sources was presented in December 2011 at the SERDP and ESTCP Symposium. An on-demand video of the short course provides training on the use of on-site analysis techniques for conducting vapor intrusion investigations. The techniques include indoor air sampling to identify indoor sources of VOCs, and supplemental tools such as building pressure control and radon analysis to minimize the effects of spatial and temporal variability on investigation results. Implementation of the field investigation methods and interpretation of the results as well as method validation and regulatory acceptance is covered.

Individual modules of the short course can be accessed below. The material in its entirety can be found in the Full Presentation. Also, a Hands-On Demonstration Handout was provided during the course.

Field Methods to Distinguish between Vapor Intrusion and Indoor Sources of VOCs

Module 1 Introduction: Overview of Vapor Intrusion (VI) and Indoor Sources of VOCs
(31:12 min)
Presented by Dr. Thomas McHugh, GSI Environmental Inc. and Mr. Kyle Gorder and Dr. Erik Dettenmaier, Hill Air Force Base
Module 2 Compound-Specific Stable Isotope Analysis
(18:05 min)
Presented by Dr. Thomas McHugh, GSI Environmental Inc.
Module 3 Hydrocarbon Fingerprinting
(14:40 min)
Presented by Dr. Thomas McHugh, GSI Environmental Inc.
Module 4 Building Pressure Control
(19:50 min)
Presented by Dr. Thomas McHugh, GSI Environmental Inc.
Module 5 On-site Gas Chromatography/Mass Spectrometry (GC/MS) Analysis: Overview
(21:18 min)
Presented by Mr. Kyle Gorder and Dr. Erik Dettenmaier, Hill Air Force Base
Module 6 Demonstration of VI Field Equipment: Pressure Transducer, Radon Meter, Adsorbent Tubes and Pumps
(29:45 min)
Presented by Dr. Thomas McHugh, GSI Environmental Inc. and Mr. Kyle Gorder and Dr. Erik Dettenmaier, Hill Air Force Base

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