The U.S. Army Corps of Engineers, Savannah District, is conducting preliminary research to determine the market capabilities of potential contractors to perform maintenance dredging in the Savannah, GA and Brunswick, GA Entrance Channels.
Hopper dredge(s) will be required for the work. The dredge(s) must have the capability to dredge fine sands and silts to a depth of -48 MLLW and to transport the dredged sediment up to 15 miles to the dump location. A Quality Control System (QCS) will be required and the dredge(s) will be required to have Dredging Quality Management installed and in operating condition. On board environmental monitoring will also be required.
Dredged material shall be placed in the offshore disposal area below the –25 MLLW level, and at least 100 meters inside the boundary of the Ocean Dredge Material Disposal Site (ODMDS). A depth of -30 feet is the warning threshold for monitoring and management purposes.
If -30 feet MLLW is reached, then management decisions will be made on future sediment placement to avoid exceeding the -25 foot MLLW threshold. Furthermore, disposal shall be within a specific area within the ODMDS identified by the USACE in consultation with EPA, Region 4 in order for disposal monitoring to be effective.
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Source: fbo.gov, February 18, 2013