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Soil Vapor Intrusion:
Understanding the Effects, Measuring the Risks,and Managing the Liabilities

As more and more environmental and ecological matters are being litigated, there is an increasing emphasis on assessing and apportioning causation. This webinar will discuss the physical basis for soil vapor intrusion (SVI) and describe the most common situations and chemicals where SVI risks can be the basis for claims of personal injury or property damage. In this context, we will describe the effect of recent changes in the toxicity evaluations of the common solvents—perchloroethylene and trichloroethylene—for SVI risk evaluations. We will also evaluate the hazard potential for several Brownfield and other scenarios.

Uncertainties will also be described, as well as how these uncertainties are driving a trend by key states away from modeling and studies and toward measurement and mitigation. The webinar will also describe the type of testing (e.g., indoor air or soil gas) and analysis that make sense to undertake in various circumstances, particularly to distinguish SVI from consumer product sources. Combining data and models to conduct calibrated modeling will also be described as a cost-effective approach. Finally, we will discuss the pros and cons of various mitigation measures.

Several case studies will be included to illustrate these topics.

Speakers:

Peter M. Mesard, P.E., P.G., C.E.G., C.Hg.
Principal Engineer, Environmental Sciences

Mr. Mesard's expertise includes design and implementation of environmental investigations; remediation system design, evaluation, and failure analysis; geologic hazard analysis; and construction defect assessment.

Brian L. Murphy, Ph.D.
Principal Scientist, Environmental Sciences

Mr. Murphy is trained as a physicist, and has more than 30 years of experience in data analysis and mathematical modeling of pollutant fate and transport in various media.

Click here to view the webinar recording.

There is no charge for this webinar.