This website includes general information on vapor intrusion (VI) in support of the Environmental Protection Agency (EPA) in developing Vapor Intrusion Guidance. This website also includes information on vapor intrusion including workshops, conferences, and papers.
Vapor intrusion is the migration of volatile chemicals from the subsurface into overlying buildings. Volatile chemicals in contaminated soil or groundwater can cause vapors that may migrate through soil and into indoor air spaces.
Disclaimer: This is a development site for public use and in support of Agency activities and is not an official US EPA website. This site is operated by EnviroGroup Limited under contract to the US EPA.
