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Vapor Intrusion

 
 
C&G Vapor Intrusion with Biodegradation Conceptual Model (Spot Photo)

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.


Vapor Intrusion Training News

The Interstate Technology Regulatory Council (ITRC) will kickoff the 1st of several planned 2-day vapor intrusion training classes 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.

Zip File
View/Download Assessing Vapor Intrusion at Petroleum Release Sites
Size: 7 MB | March 16,2008 | License: Free


 

Publications
API has produced several publications on developing screening criteria, site assessment and vapor biodegradation:


Collecting and Interpreting Soil Gas Samples from the Vadose Zone
Summary | Download Now


Identification of Critical Parameters for the Johnson and Ettinger (1991) Vapor Intrusion Model
API Soil and Groundwater Research Bulletin Number 17
May 2002


Vadose Zone Natural Attenuation of Hydrocarbon Vapors
An Empirical Assessment Of Soil Gas Vertical Profile Data

API Soil and Groundwater Research Bulletin Number 15
December 2001

Determining Vapor Attenuation Factors Using a Screening-Level Model and Field Data from the CDOT-MTL
Summary API Soil and Groundwater Research Bulletin Number 16
April 2002


Assessing the Significance of Subsurface Contaminant Vapor Migration to Enclosed Spaces: Site-Specific Alternatives to Generic Estimates

Site-Specific Alternative to Generic Estimates

API Publication 4674
December 1998


 

Presentations:

Contaminated Property Transactions: Mitigating the Risks of Redevelopment
April 11-13, 2007
Washington, DC

Vapor Intrusion Session In Focus

Featuring presentations by leaders in the VI practice from government, industry and consulting. Go to conference agenda.


Vapor Intrusion: The Next Great Environmental Challenge - An Update
Presented by The Air and Waste Management Association
September 13-15, 2006
Los Angeles, CA


Session 4: Petroleum Vapor Intrusion Issues

Abstracts:

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File Size: 1.3 MB
OS: PC/Mac | License: Free


Presentations (.zip file):


Zip FileDownload
File Size: 4.3 MB
OS: PC/Mac | License: Free


NGWA/API Petroleum Vapor Intrusion Workshop
August 17, 2005
Costa Mesa, CA

Regulators, consultants and industry representatives participated in a workshop to gain a better understanding about the potential for vapor intrusion from subsurface petroleum hydrocarbon sources. Click here for a summary. Click below to download workshop presentations (.zip file).

Zip File Download

File Size: 5.7 MB
OS: PC/Mac
License: Free

 

 
 

 
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Updated:August 21, 2008