Region 8

Vapor Intrusion Mitigation

In cases where the vapor intrusion pathway is determined to be complete and indoor air concentrations of volatile chemicals exceed levels of concern, it is necessary to identify and evaluate methods that are available to mitigate (reduce) or eliminate the impact of the vapor intrusion pathway. This page includes links to documents that describe a number of alternative methods and strategies for mitigation of the vapor intrusion pathway.

Mitigation of VOCs in Indoor Air

EPA Air/Superfund National Technical Guidance Study Series. Options for developing and evaluating mitigation strategies for indoor air impacts at CERCLA sites. September 1993. EPA-451/R-93-012. (PDF) (174 pp, 7.3 MB, About PDF)
This document evaluates approaches that may be used to mitigate Superfund site impacts on the indoor air quality of nearby structures.

Indoor Air Vapor Intrusion Mitigation Approaches
This is an Engineering Issue that summarizes available information on site remediation technologies and related issues regarding vapor intrusion.

Radon Mitigation

Techniques that have been developed for mitigating radon intrusion into indoor air may also be used to mitigate the intrusion of VOCs into buildings.

EPA's Radon Web page contains a wealth of information on radon including links to resources and publications on mitigating radon in homes

Vapor Intrusion at Petroleum Sites

Sites where a petroleum-based fuel such as gasoline, diesel or jet fuel has leaked from above-ground or underground storage tanks into the surrounding soil are often referred to as “petroleum sites”.  While the issues and strategies associated with investigation of vapor intrusion at these sites is generally similar to other sites, there are several specialized aspects of the approaches used to evaluate petroleum sites.  Resources specific to addressing vapor intrusion at petroleum sites include:

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