| Assessing Chemical Constituents in Reservoir Tailwaters |
AUG 97 |
55 pages |
| Authors:
Steven L. Ashby; Amy S. Hall; Stephen P. Faulkner; Robert P. Gambrell; Brenda A. Smith; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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 | Techniques for assessing the fate of selected chemical constituents in reservoir tailwaters were evaluated using a review or analytical methods and laboratory studies to determine applicable field methods and field studies to evaluate selected methods. An annotated bibliography of analytical methods is included. Analytical methods for the measurements of reduced and oxidized iron and manganese were the primary methods evaluated. Calorimetric methods using ferrozine were determined the most suitable for ... |
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| Long-Term Effects of Dredging Operations Program. Design of an Improved Column Leaching Apparatus for Sediments and Dredged Material |
JUL 91 |
51 pages |
| Authors:
Tommy E. Myers; Robert P. Gambrell; Marty E. Tittlebaum; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
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| This report describes a new column design for investigating contaminant leaching from sediments and dredged material. Improved sampling and sample preservation procedures are also described. A review of the literature on column leaching studies is also provided. Three types of columns were reviewed: (a) soil columns, (b) solid waste columns, and (c) sediment and dredged material columns. The review focused on column design and operating parameters, not data interpretation. The ... |
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| Characterization of Soil Processes in Bottomland Hardwood Wetland- Nonwetland Transition Zones in the Lower Mississippi River Valley |
FEB 91 |
295 pages |
| Authors:
Stephen P. Faulkner; William H. Patrick Jr.; Robert P. Gambrell; W. B. Parker; Billy J. Good; LOUISIANA STATE UNIV BATON ROUGE CENTER FOR WETLAND RESOURCES
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| This document reports results of a 4-year study of bottomland hardwood soils. Study purposes were to characterize the effects of saturation and inundation on soil processes in nonwetland, transitional, and wetland to provide data for identifying and delineating wetlands from nonwetlands in the Lower Mississippi River Valley. Detailed technical information for constructing and installing equipment to measure soil redox potential and oxygen content is provided. Soil redox potential, oxygen, content, ... |
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| Environmental & Water Quality Operational Studies: Literature Survey of Reservoir Contaminant Problems |
MAY 1983 |
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| Authors:
Rashid A. Khalid; Robert P. Gambrell; Barbara A. Taylor; William H. Patrick Jr; LOUISIANA STATE UNIV BATON ROUGE LAB FOR WETLAND SOILS AND SEDIMENTS
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 | This study was conducted to review, analyze, and interpret the existing data on the nature and magnitude of Corps of Engineer (CE) reservoir toxic chemical contaminant problems and to suggest interim guidelines, if possible, for operational and management techniques to minimize contaminant problems based on the behavior of contaminants in reservoir ecosystems. Reservoir contaminant data were collected from published literature, the U.S. Environmental Protection Agency (EPA) STORET system, CE Division ... |
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