Vapor Intrusion: Things to Consider in Mitigation Design

In this episode, Paul Hagerty joins us to discuss the issue of vapor intrusion. We start with what vapor intrusion is, when it occurs, and how common it has become. We discuss different vapor intrusion mitigation strategies including one of the most common approaches: vapor barriers. The criteria used to select vapor barrier designs are rooted in engineering and information from vapor barrier vendors. We discuss work that Paul has done to develop a model that evaluates the thickness of barrier that is required in a given situation. His work concludes that in many typical cases, selection of thicker and thicker barriers is not needed. We close out the conversation with some practical advice for things to consider if you are involved in vapor intrusion mitigation projects.