Vapor Intrusion (VI) Pathway Evaluation and Mitigation

Project Duration: December 2023 - December 2025

What is Vapor Intrusion?


Vapor Intrusion is the process by which volatile vapors partition from contaminated groundwater or other subsurface sources

and migrate upward through vadose zone soils and into overlying buildings.

Why are we doing this?

ITRC has created several guidance documents and training focused on evaluating and mitigating the vapor intrusion pathway since 2007. There have been several advancements in technical and decision-making approaches. This Team will review and update information contained in the previous ITRC documents, and create a new comprehensive web-based guidance document and training products. View the Vapor Intrusion Team Proposal