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Apr 26, 2012
Hydraulic Analyses and Design of a Sediment Cap at a Superfund Site
Authors: Jerald D. Ramsden, Ph.D., and Susan GardnerAuthor Affiliations
Publication: Coastal Structures 2003
Abstract
An 8.5 hectare (21 acre) sediment cap was designed for remediation of contaminated sediments at the McCormick & Baxter Creosoting Company Superfund Site in Portland, Oregon. The sediment cap was designed to provide physical and chemical isolation of the underlying contaminated sediment in addition to physical stability of the cap itself. Contaminants of concern at the site include Arsenic, Pentachlorophenol, Carcinogenic Polynuclear Aromatic Hydrocarbons (cPAH) and Dioxins/Furans. Hydraulic analyses conducted for the project included vessel wake, wind waves, wave transformations across complex bathymetry, flood induced currents and propeller induced currents. The design incorporates several features to enhance both terrestrial and aquatic habitat at the site that is a migration route for endangered species of anadromous fish.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Authors
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Jerald D. Ramsden, Ph.D.
P.E.
Lead Coastal Engineer, PB Ports & Marine, Parsons Brinckerhoff Quade &Douglas, Inc., 400 SW 6th Ave., Suite 802, Portland, OR, 97229
Susan Gardner
P.E.
Project engineer, Ecology & Environment, Inc., 2101 Fourth Avenue, Suite 1900, Seattle, WA 98121
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