Author(s)

F.I. Colombo, R.H. Harris & S.T. Washburn

Abstract

Studies have demonstrated that volatile chemicals in groundwater and subsurface soil can migrate as vapors into residential and commercial buildings. In some instances, particularly when groundwater is not used as a drinking water source, such migration may represent the greatest potential risk at a site, and be the focus of remediation efforts. Properly assessing the risks of vapor migration from subsurface contamination into indoor air is often complex, requiring a combination of field measurements and computer modeling. An investigation has recently been performed in an urban area, to evaluate the risks of subsurface vapor transport from free-phase subsurface hydrocarbon contamination into existing homes and businesses, as well as into buildings that might be constructed in the future. This evaluation included the

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