This study investigated complete reductive dechlorination of chlorinated aliphatic hydrocarbons (CAHs) over a broad range of concentrations. Tetrabutoxysilane (TBOS), as a slow-release anaerobic substrate, was studied for enhanced reductive dechlorination of tetrachioroethylene (PCE) present as a dense non-aqueous liquid (DNAPL). Four different site-mixed cultures were used in the study: Site-300...
Implements for tilling compacted forest soils were
tested on sites logged with ground-based machines in
Oregon. The sites covered a variety of soil conditions
ranging from a clay loam to a rock7 2C2 iplemeflts
tested included disk harrows (four aies), brusa blades
(three sites), standard subsoiler tines (two sites), wing.-...
This study focused on extensive soil mass movement occurrence
in the Willamette National Forest of western Oregon and on intensive
measurements of some physical and biological changes in
streams following debris torrents. Debris torrents are a rapid
movement of water-charged debris confined to steep headwater channels.
The frequency (events/ha/yr) of...