Document Detail

Evaluation of Vapor Intrusion Using Controlled Building Pressure.
MedLine Citation:
PMID:  22486634     Owner:  NLM     Status:  Publisher    
The use of measured volatile organic chemical (VOC) concentrations in indoor air to evaluate vapor intrusion is complicated by i) indoor sources of the same VOCs and ii) temporal variability in vapor intrusion. This study evaluated the efficacy of utilizing induced negative and positive building pressure conditions during a vapor intrusion investigation program to provide an improved understanding of the potential for vapor intrusion. Pressure control was achieved in five of six buildings where the investigation program was tested. For these five buildings, the induced pressure differences were sufficient to control the flow of soil gas through the building foundation. A comparison of VOC concentrations in indoor air measured during the negative and positive pressure test conditions was sufficient to determine whether vapor intrusion was the primary source of VOCs in indoor air at these buildings. The study results indicate that sampling under controlled building pressure can help minimize ambiguity caused by both indoor sources of VOCs and temporal variability in vapor intrusion.
Thomas Erik McHugh; Lila M Beckley; Danielle M Bailey; Kyle Gorder; Erik M Dettenmaier; Ignacio Rivera-Duarte; Samuel Brock; Ian Macgregor
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-9
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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