Vapor intrusion

Vapor intrusion (VI) is a process by which chemicals in soil or groundwater migrate to indoor air above a contaminated site. VI is an emerging concept, the United States Environmental Protection Agency having only issued a draft guidance on the subject in 2002. [cite web |url=http://www.epa.gov/correctiveaction/eis/vapor.htm |title=OSWER Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (Subsurface Vapor Intrusion Guidance) |Publisher=Environmental Protection Agency |date=2002-11-29] On March 3, 2008, ASTM International released the "Standard Practice for the Assessment of Vapor Intrusion into Structures on Property Involved in Real Estate Transactions," (ASTM E 2600-08). [cite web |url=http://www.astm.org/Standards/E2600.htm |title=ASTM E2600-08 Standard Practice for Assessment of Vapor Intrusion into Structures on Property Involved in Real Estate Transactions |Publisher=ASTM International]

In the United States, vapor intrusion is handled by individual states in different ways. One of the most scrupulous guidance documents on vapor intrusion in the nation from the New York Department of Health. [ [http://www.health.state.ny.us/environmental/investigations/soil_gas/svi_guidance Guidance for Evaluating Soil Vapor Intrusion in the State of New York] ]

See also

*Superfund for a list of Environmental Protection Agency Superfund sites
* [http://www.health.state.ny.us/environmental/indoors/vapor_intrusion/ New York State Website on Soil Vapor Intrusion]
*Volatile Organic Compounds (VOCs) to learn more about the organic chemical compounds covered in the category.
*Trichloroethylene (TCE) for a discussion of the chemical compound

References