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.

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