Direct aerobic NSZD of a basalt vadose zone LNAPL source in Hawaii

Biodegradation in the Vadose Zone

Applications of GIS to the Modeling of NonPoint Source in the Vadose Zone: A Conference Overview

Because of their ubiquitous nature and potential chronic health effects, nonpoint source (NPS) pollutants have become a focal point of attention by the general public, particularly regarding pollution of surface and subsurface drinking water sources. The NPS pollutants pose a technical problem because of the areal extent of their contamination that increases the complexity and sheer volume of d...

Design and application of a direct-push vadose zone gravel permeameter.

A borehole permeameter is well suited for testing saturated hydraulic conductivity (K(sat)) at specific depths in the vadose zone. Most applications of the method involve fine-grained soils that allow hand auguring of test holes and require a small water reservoir to maintain a constant head. In non-cohesive gravels, hand-dug test holes are difficult to excavate, holes are prone to collapse, an...

Hanford Site Vadose Zone Studies: An Overview

899 The Hanford Site is 1517 km2 (586 mi2) in size, located in a sparsely populated area in the rain shadow of the Cascade Mountains, adjacent to the Columbia River in southeastern Washington State (Fig. 1). The Hanford Site was set aside in the early 1940s by the U.S. Government to perform a top-secret mission, the Manhattan Project, for production of plutonium for atomic weapons used to end W...

Vadose Zone Processes and Chemical Transport

soils. A natural obstacle to this practice is the accelerated aging of iron and loss of reactivity resulting from O2 Permeable zerovalent iron (Fe0 ) barriers have become an estabin the soil atmosphere. Despite this apparent limitation, lished technology for remediating contaminated ground water. This same technology may be applicable for treating pesticides amenable situations could arise wher...