A new bridge will be constructed to replace the aging Tappan Zee Bridge over the Hudson River in New York. Construction will potentially result in hydroacoustic impacts to the local fish fauna. As a consequence, a substantial environmental impact analysis had to be conducted to obtain construction permits. This paper describes the process of environmental analysis and some of the results of the studies that led up to the final permitting. The process included modeling of pile-driving acoustics, analysis of river ambient noise, analysis of test piling, and observations on fish behavior during these tests.
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Short- and long-term monitoring of underwater sound levels in the Hudson River (New York, USA).
J Acoust Soc Am
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Department of Biology, University of Maryland, College Park, Maryland 20742, USA.
There is a growing body of research on natural and man-made sounds that create aquatic soundscapes. Less is known about the soundscapes of shallow waters, such as in harbors, rivers, and lakes. Knowledge of soundscapes is needed as a baseline against which to determine the changes in noise levels resulting from human activities.
View Article and Find Full Text PDFPile Driving at the New Bridge at Tappan Zee: Potential Environmental Impacts.
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AKRF, Inc., Hanover, MD, 21076, USA.
A new bridge will be constructed to replace the aging Tappan Zee Bridge over the Hudson River in New York. Construction will potentially result in hydroacoustic impacts to the local fish fauna. As a consequence, a substantial environmental impact analysis had to be conducted to obtain construction permits.
View Article and Find Full Text PDFMethods for Predicting Potential Impacts of Pile-Driving Noise on Endangered Sturgeon During Bridge Construction.
Adv Exp Med Biol
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JASCO Applied Sciences Ltd., Victoria, BC, V8Z 7X8, Canada.
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View Article and Find Full Text PDFAvoidance of Pile-Driving Noise by Hudson River Sturgeon During Construction of the New NY Bridge at Tappan Zee.
Adv Exp Med Biol
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Department of Biology, University of Maryland, College Park, MD, 20742, USA.
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Department of Environmental Sciences, Rutgers University, 14 College Farm Road, New Brunswick, New Jersey 08901, United States.
This study represents the first time that a micrometeorological technique, using turbulent transport measurements, has been used to determine the direction and magnitude of air-water exchange of polychlorinated biphenyls (PCBs). The study was conducted during July 2008 on the Hudson River estuary near the Tappan Zee Bridge, which is the site of some of the most serious PCB contamination in the world. Gas-phase ΣPCB concentrations measured at two heights above the water column averaged 1.
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