Leachate Testing and Evaluation for Freshwater Sediments. Long-Term Effects of Dredging Operations Program

Myers, Tommy E.; Brannon, James M.; Tardy, Barbara; Townsend, Dan M.

doi:10.21236/ada278643

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Batch and column leaching along with simple modeling can be conducted to evaluate potential leachate quality (Myers et al 1996;Brannon et al 1994). The models originally designed for evaluating CDFs can be applied to evaluate leaching potential at upland beneficial use sites.…”

Section: Tiered Approach For Evaluating Water Pathway Exposures For E...mentioning

confidence: 99%

Environmental evaluation and management of dredged material for beneficial use : a regional beneficial use testing manual for the Great Lakes

Keil¹,

Estes²,

Kreitinger³

et al. 2022

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The Environmental Evaluation and Management of Dredged Material for Beneficial Use: A Regional Beneficial Use Testing Manual for the Great Lakes (a.k.a. Great Lakes Beneficial Use Testing Manual) is a resource document providing technical guidance for evaluating the suitability of dredged sediment for beneficial use in aquatic and terrestrial environments in the Great Lakes region. The procedures in this manual are based on the Environmental Laboratory extensive research, working with US Army Corps of Engineers (USACE) Great Lakes districts, state resource agencies, and local stakeholders seeking to develop dredged material beneficial use alternatives consistent with regional needs and goals. This manual is the first guidance document developed by USACE for evaluating the environmental suitability of dredged material specifically for beneficial use placements. It provides a tiered framework for evaluating the environmental suitability of aquatic and upland beneficial uses consistent with the Inland Testing Manual and the Upland Testing Manual. This manual is intended to serve as a regional platform to increase collaborative problem-solving and endorse a common understanding of the scientific and institutional practices for evaluating dredged material for any beneficial use. Dredged sediment may be managed as a valuable resource, with great potential to create economic, environmental, and social benefits.

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Section: Tiered Approach For Evaluating Water Pathway Exposures For E...mentioning

confidence: 99%

Environmental evaluation and management of dredged material for beneficial use : a regional beneficial use testing manual for the Great Lakes

Keil¹,

Estes²,

Kreitinger³

et al. 2022

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Trace Elements in Sediments of an Aging Reservoir in Rural Mississippi: Potential for Mobilization Following Dredging

Davidson

Bennett

Beard

et al. 2005

Water Air Soil Pollut

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Since 1948, the United States Department of Agriculture has assisted construction of over 10,000 flood control dams, many of which are reaching the end of their design life. Rehabilitation by dredging, or decommissioning by dam removal both have the potential to mobilize contaminants currently sequestered in the sediments. Plans to rehabilitate a small aging reservoir in a rural area of northern Mississippi led to a study characterizing the chemical composition of the reservoir sediments, and the potential for mobilizing contaminants if aerated. Sediment analyses included bulk and trace elements, and a suite of agrichemicals. Trace element concentrations are highly correlated with clay and Fe concentrations, with no elevated levels indicative of anthropogenic inputs. Batch leaching studies under reducing conditions simulating in situ conditions, and under mildly oxidizing conditions simulating disturbed sediments indicate that aeration should lead to a decrease in the aqueous concentration of trace metals currently found in sediment pore water. Decreased aqueous concentrations under oxidizing conditions are probably caused by precipitation of iron as amorphous oxides that scavenge released metals. Based on these results, dredging is a viable rehabilitation strategy for reservoir rehabilitation.

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Leachate Testing and Evaluation for Freshwater Sediments. Long-Term Effects of Dredging Operations Program

Cited by 2 publications

References 7 publications

Environmental evaluation and management of dredged material for beneficial use : a regional beneficial use testing manual for the Great Lakes

Environmental evaluation and management of dredged material for beneficial use : a regional beneficial use testing manual for the Great Lakes

Trace Elements in Sediments of an Aging Reservoir in Rural Mississippi: Potential for Mobilization Following Dredging

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