Vapor Intrusion

Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air

This document is intended for use at any site being evaluated by EPA pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended, or the corrective action provisions of the Resource Conservation and Recovery Act (RCRA), as amended; it is also intended for use by EPA’s brownfield grantees, or state agencies acting pursuant to CERCLA or an authorized RCRA corrective action program where vapor intrusion may be of potential concern. It is applicable to both residential and non-residential settings.

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