Investigation of Vapor Intrusion Scenarios Using a Computational Model

October 16, 2009 (All day)

Among the health risks of national concern is vapor intrusion (VI) into structures built on or near sites contaminated with volatile organic compounds or semi-volatile organic compounds. Chemical vapors released from soil and/or groundwater contamination can migrate into buildings and pose a long-term hazard to human health. Designing and implementing sampling plans to characterize VI risks can be difficult. To date, several VI models have been developed to aid scientific understanding, but most models are used as binary screening tools – assessing whether or not a site needs more investigation. Computational models that incorporate site characteristics can provide a means to quantitatively assess the effect of various physical, chemical and biological processes on VI. Furthermore, they can be used to inform site characterization activities by evaluating the effects of specific site features. This presentation will discuss some results of the quantitative 3D modeling research being conducted in Brown University. Modeling results for scenarios that incorporate stratified geologies and common site features will be presented and compared to commonly utilized VI sampling plans. Computational modeling of different VI scenarios can improve VI risk assessments and aid in the interpretation of field data. For more information about this seminar, please contact: David Lorenzetti(510) 486-4562

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