US Army Corps of Engineers, Dist New Orleans, PO Box 60267, New Orleans, LA 70160

Y -- MISSISSIPPI RIVER, BATON ROUGE TO GULF OF MEXICO, LOUISIANA, FY-00, CUTTERHEAD DREDGE RENTAL, SALTWATER BARRIER SILL, PLAQUEMINES PARISH, LOUISIANA SOL DACW29-00-B-0054 DUE 040300 POC Sheila Enclade, Contract Specialist, (504)862-1514 The Contractor's plant will primarily be used in connection with the construction of a saltwater barrier sill located between miles 65.0 and 63.0 above Head of Passes (AHP) on the Mississippi River in water deeper than -45 feet NGVD. The work consist of satisfactorily placing hydraulically dredged material which shall be taken from a borrow area located on the river bottom. The contract drawings show the anticipated location and configuration of the sill and borrow area. Further details of the location and size of the sill and borrow area required will be given in the dredging assignments. A spill barge with submerged vertical pipe shall be used to discharge material below the water surface. The spill barge shall be of sufficient size to accommodate a length of vertical discharge pipe able to deliver material to elevations varying from -45 to -60 ft. NGVD. Maximum height of the sill will be the point at which the settled drerdged material at the disposal area reaches a maximum height of -45 feet NGVD. Approximate dimensions of the sill will be 1,500 feet wide by 1,700 feet long. Posted 12/28/99 (W-SN411663). (0362)

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