by U.S. Army Corps of Engineers, Environmental Laboratory in Vicksburg, Miss .
Written in English
|Statement||by Edward L. Thackston, Michael R. Palermo ; Long-Term Effects of Dredging Operations Program.|
|Series||Technical report D -- 90-9.|
|Contributions||Palermo, Michael R., Long-Term Effects of Dredging Operations Program (U.S.)|
|The Physical Object|
Table B1. Summary of Data Requirements for Prediction of the Quality of Effluent from Confined Dredged Material Disposal Areas. B Table B2. Observed Flocculent Settling Data. B Table B3. Percentage of Initial Concentration and Suspended Solids Concentrations vs. Time, Assumed Depth of Influence of 2 ft. B Table B4. Confined dredged material disposal has increased because of constraints on open-water disposal. The quality of water discharged from confined disposal areas (effluent) is a major environmental concern associated with such disposal. more» A schematic of a typical active confined disposal . dredged material disposal areas. 3. General. Dredged materials usually placed in confined disposal areas are in a semifluid state that requires removal of large amounts of water in order to densify the material. The dewatering operation is desirable in that (1) it creates more volume in existing disposal sites for additional. The quality of water discharged from confined disposal areas (effluent) is a major environmental concern associated with such » Dredged material placed in a disposal area undergoes sedimentation that results in a thickened deposit of material overlaid by clarified water (supernatant), which is discharged as effluent from the site.
This chapter discusses the environmental effects of unconfined and confined disposal of dredged materials in open water. Five selected sites were evaluated as part of the U.S. Army Engineers Dredged Material Research Program: (1) Ashtabula, Ohio, (2) Columbia River, Oregon, (3) Duwamish Waterway, Washington, (4) Eatons Neck, New York, and (5) Galveston, Texas. Palermo, M. R., "Development of a Modified Elutriate Test for Estimating the Quality of Effluent from Confined Dredged Material Disposal Areas," Technical Report D, Department of the Army, US. Field Evaluation of the Quality of Effluent from Confined Dredged Material Disposal Areas: Supplemental Study - Houston Ship Channel from confined dredged material disposal areas is an. EM is an overview of Corps dredging and dredged material disposal practice. This manual supplements EM by providing detailed guid-ance for confined dredged material disposal. Bibliography. Bibliographic references are indicated as needed in the text and are listed in Appendix A. The US Army Engineer Waterways Experiment.
Field Evaluation cf the Quality of Effluent from Confined Dredged Material Disposal Areas: Supplemental Study - Houston Ship Channel PERSONAL AUTHOR(S) Thackston, Edward L., Palermo, Michael R. 13a. TYPE OF REPORT 13b. TIME COVERED 14 DATE OF REPORT (Year, Month, Day) PAGE COUNT Final report FROM -TO _ May 50 Column settling test procedures are used in designing confined dredged material disposal areas for effective sedimentation and initial storage of solids. This report presents the results of a study in which the test procedures were refined to allow a prediction of the effluent-suspended solids concentration for conditions normally found when saltwater sediments are encountered. The effluent quality screening protocol for hydraulic disposal of dredged material in a confined disposal facility was developed based on the equilibrium and mixing boundary conditions, using observations from five field sites for validation. industrialised areas, sediments may contain high levels of contamination from heavy metals and a variety of organic compounds. These Guidelines provide a national framework to assess the environmental impacts from the disposal at sea of dredged material. These build upon and replace the approach incorporated in the Australian and New Zealand.