Site describes studies using flow visualization and rock matrix pressure measurements to study flow through fractures in the unsaturated zone, which plays an important role in water infiltration and contaminant transport.
The study of petroleum in both the saturated and unsaturated zones, to better understand the processes that control contaminant behavior, and to use this understanding to estimate the future behavior of the contaminants.
This site provides information on investigations of hydrocarbons in the unsaturated zone and shallow ground water at a gasoline-spill site in Galloway Township, N.J., with links to research projects, mathematical models, and photos.
U.S. Department of the Interior |
U.S. Geological Survey