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Vapor Intrusion

Vapor Intrusion refers to the migration of vapors from subsurface contaminant sources to buildings such as a homes or workplaces. API conducts research towards improving the screening process for vapor intrusion at sites where petroleum releases have occurred.

BioVapor Indoor Vapor Intrusion Model

BioVapor is a user-friendly spreadsheet implementation of an indoor vapor intrusion model with oxygen-limited biodegradation. The BioVapor model is a steady-state 1-D analytical model intended to provide the user with an improved understanding of the potential effect of vadose zone aerobic biodegradation on the vapor intrusion pathway.  View More

Vapor Intrusion Training News

API conducted a 1/2-day workshop "Assessment and Evaluation of Vapor Intrusion at Petroleum Release Sites" at the annual AEHS conference in Amherst, MA.  The workshop was on Monday, October 17, 2011.  Below are PowerPoint presentations from the workshop.

Presentation 1Presentation 2 | Presentation 3 | Presentation 4 | Presentation 5 | Presentation 6

View/Download Assessing Vapor Intrusion at Petroleum Release Sites-October 2009

View/Download BioVapor, a 1-D Vapor Intrusion Model-October 2009

The Interstate Technology Regulatory Council (ITRC) ran the 1st of several planned 2-day vapor intrusion training classes on October 7-8, 2008 in Portland, OR. ITRC's training supports their well-received 2007 vapor intrusion guidance by providing in-depth information on developing site conceptual models, site investigation, data evaluation and mitigation. Class exercises allow attendees to apply their experience and newly-gained knowledge to real-world vapor intrusion scenarios.

On March 16 2008, API conducted a 1/2-day workshop: "Assessing Vapor Intrusion at Petroleum Release Sites" at the 20th Annual National Tanks Conference and Expo in Atlanta, GA. The goal of this workshop was to provide the most up-to-date, cost effective strategies for verifying bioattenuation and determining the significance of the vapor intrusion pathway. The workshop emphasized principles of vapor movement and attenuation, site conceptual model development, and collection of high-quality data. A similar workshop will be presented at the 19th Annual AEHS Meeting & West Coast Conference on Soils, Sediments, and Water; March 9-12, Marriott Mission Valley, San Diego, California.

View/Download Assessing Vapor Intrusion at Petroleum Release Sites


Publications

API has produced several publications on developing screening criteria, site assessment and vapor biodegradation.  View More


Presentations

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