Maintenance Dredging, Delaware River, Philadelphia to Sea and Wilmington Harbor, Christina River

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Summary from the notice

Contract work consists of maintenance dredging of approximately 2.7 million cubic yards of sediment within the Delaware River, Philadelphia to Sea main navigation channel between Stations 117+000 and 237+500 and approximately 475,000 cubic yards from Wilmington Harbor, Christina River. Work includes hydraulic dredging with placement of the dredged material into the Pedricktown, Killcohook, Artificial Island and/or Reedy Point disposal areas. All dredging will be performed to the required depths indicated with 1-foot allowable overdepth. All dredging shall be performed as contour dredging. Before and after dredging surveys for measurement will be performed by the government and shall be requested by the contractor a minimum of two days prior to beginning or completing a dredging section. Potential work assignments with anticipated base contract quantities and dredging depths (in MLLW) are as detailed below: Delaware River, Philadelphia to Sea Main Channel Range Station to Station Required to -46’ Available to -47’ Marcus Hook 117+000 to 129+000 750,000 900,000 Deepwater Point 187+000 to 200+000 750,000 900,000 New Castle 225+000 to 237+500 750,000 900,000 TOTALS 2,250,000 2,700,000 Wilmington Harbor, Christian River Acceptance Section Station to Station Required to -35’ Available to -36’ AS-1 0+000 to 1+650 40,000 55,000 Acceptance Section Station to Station Required to -38’ Available to -39’ AS-2 1+650 to 3+600 130,000 170,000 AS-3 3+600 to 4+600 120,000 135,000 AS-4 4+600 to…

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