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Title: Supplemental Environmental Assessment: Louisiana Coastal Area, Beneficial Use of Dredged Material Program at Tiger Pass Project, Plaquemines Parish, Louisiana: SEA 542.A
Authors: United States. Army. Corps of Engineers. Mississippi Valley Division.
Keywords: Dredging spoil
Environmental management
Plaquemines Parish (La.)
Publisher: United States. Army. Corps of Engineers. New Orleans District.
Abstract: The U.S. Army Corps of Engineers Mississippi River Valley Division, Regional Planning and Environment Division South, has prepared this Supplemental Environmental Assessment for the New Orleans District to present changes and additional potential impacts to the approved Project Plan described in Environmental Assessment #542 titled “Louisiana Coastal Area (LCA), Beneficial Use of Dredged Material Program at Tiger Pass Project, Plaquemines Parish, Louisiana”. The Finding of No Significant Impact for EA #542 was approved by the CEMVN Commander on March 9, 2016. EA #542 and FONSI are hereby incorporated by reference. The approved Project Plan assessed in EA #542, included the construction of a 5,000-ft long, 23 acre non-continuous ridge backed by a 500-ft wide, 55 acre marsh platform beneficially utilizing dredged material from the hopper dredge disposal area. The Project Area is located on the western side of the Mississippi River, adjacent to Spanish Pass, downstream of its intersection with Tiger Pass near Venice, in lower Plaquemines Parish, LA approximately 12 miles above Head of Passes, Southwest Pass, and South Pass near Venice, Louisiana. The proposed action assessed in this SEA involves changes to the approved Project Plan for ridge restoration and marsh creation previously described in EA #542. Changes include adjustments to the design of the ridge and marsh platform in the Project Area, the expansion of the marsh platform to include perimeter dikes, borrow pits for perimeter dike construction, the addition of an equipment and pipeline staging area and the impacts associated with the equipment needed for the jack and bore pipeline casing installation of a 42 inch pipeline casing under portions of Tide Water Road. These modifications to the original Project Plan result in an additional 75.84 acres of impacts and requires an additional 50,000 cubic yards of dredge material. Also being proposed is an alternative route to facilitate the transport of the dredged material from the marina to the Project Area via a dredge material discharge pipeline. Utilization of the proposed alternative route would require dredging of a marine vessel slip located at the eastern end of Haliburton Road in order to accommodate barge traffic. This SEA has been prepared in accordance with the National Environmental Policy Act of 1969 and the Council on Environmental Quality’s Regulations, as reflected in the USACE Engineering Regulation (ER) 200-2-2. This SEA provides sufficient information on the potential adverse and beneficial environmental effects of the proposed action to allow the District Commander to make an informed decision on the appropriateness of an Environmental Impact Statement or a FONSI.
Description: Supplemental Environmental Assessment / Finding of No Significant Impact
Rights: Approved for Public Release; Distribution is Unlimited
Size: 123 pages / 6.757 Mb
Types of Materials: PDF/A
Appears in Collections:Environmental Documents

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