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Page Title: COMPLETION OF SEPARATION FEASIBILITY EVALUATION
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ERDC TN-DOER-C13
July 2000
Methods for estimating the volumes occupied by hydraulically dredged material as a function of
time and operational factors are given in Engineer Manual (EM) 1110-2-5027 (Headquarters, U.S.
Army Corps of Engineers, 1987). These methods rely on column settling tests to evaluate volume
changes during hydraulic placement of fine-grained material, and may be applied directly in
evaluating potential changes in volumes of fine-grained fractions resulting from hydraulic separa-
tion methods. The calculations would require laboratory test data as described in EM 1110-2-5027,
particularly as the overflow from a separation process will typically present a more dilute slurry
than a hydraulic dredge discharge, for which this guidance was designed.
COMPLETION OF SEPARATION FEASIBILITY EVALUATION: Once a reliable estimate
of MRP has been developed, the information can be used in completing the evaluation of separation
feasibility. If recovery potential matches the requirements for the BU applications under consid-
eration, fractionation testing should be conducted to determine if separated fractions meet the
requirements related to residual COC. If these results are favorable, appropriate operational
methods or equipment for separation can be selected, and a cost analysis can be performed.
Procedures for these aspects of the evaluation are described in Olin et al. (1999).
CONCLUSIONS: Development of a reuse plan for a CDF or dredging project will require a
multistep approach incorporating existing data, identification of local BU opportunities and require-
ments, and practical and/or statistical sampling approaches. Physical separation is only one of
several approaches that can be taken to produce material suitable for various beneficial uses, and
should be evaluated together with other alternatives to determine the most suitable approach for a
given site.
POINTS OF CONTACT: For additional information, contact the authors, Trudy J. Olin-Estes
(601-634-2125, olint@wes.army.mil) and Dr. Michael R. Palermo (601-634-3753, palermm
@wes.army.mil) or the Program Manager of the Dredging Operations and Environmental Research
Program, Dr. Robert M. Engler (601-634-3624, englerr@wes.army.mil). This technical note should
be cited as follows:
Olin-Estes, T. J., and Palermo, M. R. (2000). "Determining recovery potential of dredged
material for beneficial use Soil separation concepts," DOER Technical Notes Collection
(ERDC TN-DOER-C13), U.S. Army Engineer Research and Development Center,
Vicksburg, MS.  www.wes.army.mil/el/dots/doer
REFERENCES
Allen, J. P. (1994). "ARCS mineral processing pretreatment of contaminated sediment, Ashtabula River, Buffalo River,
Indiana Harbor/Grand Calument River, and Saginaw River and Bay areas of concern," EPA 905-R94-022,
Assessment and Remediation of Contaminated Sediments Program, Great Lakes National Program Office, Chicago,
IL. http://www.epa.gov/glnpo/arcs/EPA-905-R94-022/EPA-905-R94-022.html
Averett, D. E., Perry, B. D., Torrey, E. J., and Miller, J. A. (1990). "Review of removal, containment, and treatment
technologies for remediation of contaminated sediments in the Great Lakes," Miscellaneous Paper EL-90-25, U.S.
Army Engineer Waterways Experiment Station, Vicksburg, MS.
Detzner, D., Kitschen, L., and Weimerskirch, W. (1995). "METHA The first large-scale plant for treatment of harbour
sediments," Mineral Processing, No. 5, 1993, Germany (unpublished; for copy, please contact authors of this
technical note).
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