| High Resolution Site Characterization at DNAPL Sites |
 Presented by Seth Pitkin (
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)Stone Environmental, Inc. Montpelier, Vermont, USA The characteristics of DNAPLs coupled with the scale of heterogeneity in subsurface hydrogeologic systems results in very complex distributions of DNAPL in geologic media, both porous and fractured. A brief review of the physics controlling DNAPL movement in porous media will be presented followed by a discussion of approaches to the investigation of sites contaminated with DNAPL. While it is critical that the investigator pay attention to the presence, location and distribution of the DNAPL, this is only one aspect of a complicated system involving multiple phases in a spatially variable framework. The components of an adequate site investigation include:
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