ITRC Publishes New Guidance Document on Petroleum Vapor Intrusion

ITRC Publishes New Guidance Document on Petroleum Vapor Intrusion: Petroleum Vapor Intrusion: Fundamentals of Screening, Investigation, and Management

This ITRC guidance document uses a scientifically-based approach to support improved decision making at potential petroleum vapor intrusion (PVI) sites by employing an eight-step process. By applying this approach, decision makers can confidently screen out sites, and therefore focus limited resources on the small fraction of petroleum-contaminated sites that warrant vapor control or additional site management.

This ITRC guidance complements the ongoing work of United States Environmental Protection Agency (USEPA) Office of Underground Storage Tanks (OUST) in addressing the PVI pathway.

Petroleum Vapor Intrusion (PVI) is the process by which volatile petroleum hydrocarbons (PHCs) released as vapors from light non-aqueous phase liquids (LNAPL), petroleum-contaminated soils, or petroleum-contaminated groundwater migrate through the vadose zone and into overlying buildings.

This new ITRC guidance document can be accessed at www.itrcweb.org/PetroleumVI-Guidance. ITRC offers a free corresponding Internet-based training course on Petroleum Vapor Intrusion as well.