Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/47344
Title: Discussion of regulatory criteria for ocean disposal of dredged materials : elutriate test rationale and implementation guidelines
Authors: Keeley, John W.
Engler, Robert M.
Keywords: Waste disposal in the ocean
Dredged material
Dredging spoil
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Miscellaneous Paper (Dredged Material Research Program (U.S.)) ; no. D-74-14
Abstract: This report presents the rationale and guidelines for implementation of the "Standard Elutriate Test" as authorized in Rules and Regulations, Transportation for Dumping of Material into Ocean Waters, Title UO, Chapter 1, Subchapter H, Part 227.61(c), Federal Register, Volume 38, No. 198, 15 October 1973. Sediments normally contain constituents that exist in different chemical forms and are found in various concentrations in several locations within the sediment. Criteria to predict the pollution potential of dredged material (sediments) must measure the sediment fraction that has a detrimental effect on water quality and the associated biota. Regulatory criteria should differentiate that fraction of a sediment that does not have an adverse effect on the environment from that fraction that does. The immediate bioavailable fraction of a sediment is dissolved in the sediment interstitial water or in an ionic form that is bound to the ion exchange fraction of the sediment. The elutriate test indicates those constituents in the interstitial water and those ions loosely bound to the ion exchange fraction and, therefore, is a viable criterion for estimating the immediate impact on water quality. Procedurally, a fixed volume of undisturbed bottom sediment from the dredge site is added to a fixed volume of composite receiving water (proposed disposal site water) at a ratio of 1:4, dredged material receiving water. The mixture is shaken for a specific time under con-trolled conditions. The sediment is allowed to settle; the supernatant is decanted, centrifuged, and filtered for clarification. The concentration of specific constituents in the clear supernatant (the standard elutriate) from the dredged material/receiving water mixture is compared with the concentration found in the original filtered receiving water.
Description: Miscellaneous Paper
Gov't Doc #: Miscellaneous Paper D-74-14
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/47344
Appears in Collections:Miscellaneous Paper

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