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Title: Final Environmental Statement : Beach Erosion Control Project, Duval County, Florida
Authors: United States. Army. Corps of Engineers. Jacksonville District.
Keywords: Shore protection
Beach erosion
Beach nourishment
Duval County (Fla.)
Publisher: United States. Army. Corps of Engineers. Jacksonville District.
Abstract: The project consists of placing about 3.3 million cubic yards of sand along 10 miles of Atlantic Ocean shoreline at Duval County, Florida. Periodic nourishment at the estimated rate of 260,000 cubic yards annually will be required to compensate for erosion losses throughout the 50-year life of the project. About 3.3 million cubic yards of material will be dredged from an offshore borrow area and placed on the project beach as initial fill. Periodic nourishment at the estimated rate of 260,000 cubic yards annually will be placed on the project beach to maintain required dimensions from scheduled maintenance dredging of the Jacksonville Harbor project, usually at 2-year intervals. Should this prove insufficient to maintain the beach, the necessary material will be obtained from offshore sites at intervals of 4 to 5 years. The project will restore a rapidly eroding stretch of beach to full public use and enjoyment and reduce or eliminate existing periodic public and private property losses due to erosion and storm-induced wave actions. Dredging and fill placement will temporarily degrade water quality at the offshore borrow site and the project beach by increasing turbidity. Public use of the beach in the immediate area of the fill placement discharge pipe will be temporarily restricted. Benthic organisms in the borrow area will be destroyed by dredging and organisms in the beach fill area will be covered. The same adverse effects, temporary degradation of water quality, and loss of some benthic and beach community organisms can be expected during periodic beach nourishment activities. However, due to the lesser amount of material involved, the lesser time involved in accomplishing the work, and the fact that the primary source of nourishment material will be shoaled areas of the Jacksonville Harbor project subject to repeated dredging, the disturbance to the environment will be considerably less. Several alternatives were considered including no action. This alternative would provide no relief from the continuing erosion-caused loss of public beach and periodic damage to shoreline structures. Consideration was given to providing a current deflector and the use of sunken barges or tanker ships to form a breakwater. The use of groins was also considered. Based on engineering and economic criteria, it was determined that the plan described in paragraph 1, Project Description, was considered to be a practical solution to existing problems.
Description: Environmental Impact Statement
Rights: Approved for Public Release; Distribution is Unlimited
Size: 104 pages/20.41 Mb
Appears in Collections:Environmental Documents

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