Upscaled modeling of complex DNAPL dissolution.

A straightforward, upscaled DNAPL mass dissolution model is developed using relatively simple input consisting of characteristic dimensions and saturations of a DNAPL accumulation. Multiple accumulations are aggregated into a single source zone volume. Physically, the dissolution process is a combination of flow through the mass (advective component) and flow around the mass (dispersive component).

Corrosion of unexploded ordnance in soil-field results.

Unexploded ordnance (UXO) are found on 400 000 Ha of land across 1400 different sites in the United States. In many cases, UXO contain high explosives posing a risk to groundwater quality. This paper provides results from a field survey of 14 inactive Army ranges distributed throughout the mainland United States.