Note: The ITRC Vapor Intrusion Toolkit (VI Toolkit) published in January 2026 updates the information in this original guidance document. This document has not been amended since publication. Some content may be out of date and may no longer apply. For the most recent information, please visit the ITRC VI Toolkit at https://itrcweb.org/vapor-intrusion-toolkit/.
Provides a generalized framework for evaluating the vapor intrusion pathway and describes the various tools available for investigation, data evaluation, and mitigation.
Topic(s): Vapor Intrusion
