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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
Optimal Dredge Fleet Scheduling Within Environmental Work Windows, Heather Nachtmann, Kenneth N. Mitchell, Chase Rainwater, Ridvan Gedik, Edward A. Pohl
Optimal Dredge Fleet Scheduling Within Environmental Work Windows, Heather Nachtmann, Kenneth N. Mitchell, Chase Rainwater, Ridvan Gedik, Edward A. Pohl
Mechanical and Industrial Engineering Faculty Publications
The U. S. Army Corps of Engineers oversees dredging in hundreds of navigation projects annually, through its fleet of government equipment and through individual contracts with private industry. The research presented here sought to examine the decision to allocate dredge resources to projects systemwide under necessary constraints. These constraints included environmental restrictions on when dredging could take place in response to the migration patterns of turtles, birds, fish, and other wildlife; dredge equipment resource availability; and varying equipment productivity rates that affected project completion times. The paper discusses problem definition and model formulation of optimal dredge fleet scheduling within environmental …
Geochemical Investigations Of Metals Release From Submerged Coal Fly Ash Using Extended Elutriate Tests, A. J. Bednar, M. A. Chappell, J. M. Seiter, J. K. Stanley, D. E. Averett, W. T. Jones, B. A. Pettway, A. J. Kennedy, S. H. Hendrix, J. A. Steevens
Geochemical Investigations Of Metals Release From Submerged Coal Fly Ash Using Extended Elutriate Tests, A. J. Bednar, M. A. Chappell, J. M. Seiter, J. K. Stanley, D. E. Averett, W. T. Jones, B. A. Pettway, A. J. Kennedy, S. H. Hendrix, J. A. Steevens
US Army Research
A storage pond dike failure occurred at the Tennessee Valley Authority Kingston Fossil Plant that resulted in the release of over 3.8 million cubic meters (5 million cubic yards) of fly ash. Approximately half of this material deposited in the main channel of the Emory River, 3.5 km upstream of the confluence of the Emory and Clinch Rivers, Tennessee, USA. Remediation efforts to date have focused on targeted removal of material from the channel through hydraulic dredging, as well as mechanical excavation in some areas. The agitation of the submerged fly ash during hydraulic dredging introduces river water into the …