Methane Vapor Intrusion Case Study: Interpretation of Complex Environmental Data Check Access

Vapor intrusion of toxic and explosive gases (for example, methane) into homes built on sites formerly occupied by commercial or industrial operations can be problematic as these properties are converted into residential subdivisions. The dominant issue is whether subsurface methane has the potential to accumulate in homes at explosive levels. This paper describes the use of forensic analysis to explain seemingly confusing and random data in an environmental dispute which resulted in a lawsuit in the United States. Also included is a discussion of the methodology employed to determine if a risk of explosion existed due to the presence of subsurface methane.