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Title: Evaluation of proposed dredged material disposal alternatives for New York/New Jersey Harbor, phase I
Authors: Poindexter-Rollings, Marian E.
Gunnison, Douglas.
MacIntyre, David F.
Goforth, Gary F.
Keywords: Dredging--Environmental aspects--Evaluation
Dredging spoil--New York (State)--New York--Location
Harbors--New York (State)--New York
Publisher: Environmental Laboratory (U.S.)
U.S. Army Engineer Waterways Experiment Station.
Series/Report no.: Technical Report;EL-88-11
Abstract: This report documents the field collection of contaminated sediments from the New York/New Jersey Harbor, laboratory testing of those sediments, and initial evaluation of the test results. The work reported in this document is the first phase of a comprehensive evaluation of disposal alternatives for contaminated dredged material from the New York/New Jersey Harbor. Based upon bioassay/bioaccumulation and base neutral priority pollutant data, field sampling sites were selected by consensus of the Steering Committee. Field sediment samples were collected from the New York/New Jersey Harbor with the assistance and direction of the US Army Engineer District, New York. Material was collected from the most highly contaminated shoals in the harbor. The samples were combined and homogenized to form a worst-case contaminated sediment sample. This sample was then subjected to laboratory testing. Laboratory tests performed included analysis for microbial pathogens, sedimentation testing, consolidation testing, and modified elutriate testing, Testing procedures are described, and test results are presented. Results of the consolidation testing are used to develop containment area filling simulations for each of the confined disposal facilities under consideration. A computerized mathematical model is used to predict the settlement of the dredged material over time. The computer program uses an explicit finite difference technique to solve a finite strain consolidation equation; it makes monthly adjustments to account for any desiccation that has occurred at the dredged material surface, The microbial pathogens, sedimentation, and modified elutriate test results are used to make preliminary evaluations of effluent water quality from each of the confined disposal facilities (CDF). For more conclusive evaluations to be made, the existing water quality standards at each CDF must be known. Recommended measures to control the effluent water quality are presented. Because of the preliminary nature of the effluent water quality evaluations, any conclusions concerning site control measures should be considered as interim guidance and should be used only to indicate the direction for future work and investigations.
Appears in Collections:Technical Report

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