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Title: Subaqueous cap design: selection of bioturbation profiles, depths, and process rates
Authors: Clarke, Douglas G.
Palermo, Michael R.
Sturgis, Thomas C.
Keywords: Contaminated sediments
Sediment capping
Dredging Operations and Environmental Research Program (U.S.)
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Note (Dredging Operations and Environmental Research Program (U.S.)) ; no.ERDC TN-DOER-C21
Abstract: PURPOSE: When dredged material has been determined to contain contaminants that open-water placement would potentially cause to degrade the benthic environment, subaqueous capping with a layer of clean material may provide an acceptable management alternative. Subaqueous capping of in situ contaminated sediments also represents a potentially effective remediation option. For either practice to satisfy the requirement of isolation of the contaminated sediments, design of caps of clean material must account for multiple factors affecting the long-term stability of the cap. The purpose of this technical note is to present guidance on one of these factors, bioturbation, which consists of various processes whereby organisms modify sediment properties or move sediment particles or solutes within the sediment matrix. Specifically, this technical note focuses on estimation of bioturbation profiles, depths, and process rates in relation to subaqueous cap design.
Description: Technical Note
Gov't Doc #: ERDC TN-DOER-C21
Rights: Approved for public release; distribution is unlimited
Appears in Collections:Technical Note

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