Mid-Barataria Sediment Diversion Draft Restoration Plan 3.2 and Environmental Impact Statement
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In addition to informing the USACE decisions, this EIS will be used to inform decisions that the Deepwater Horizon (DWH) Natural Resource Damage Assessment (NRDA) Louisiana Trustee Implementation Group (Louisiana TIG) may make regarding restoration planning in the Barataria Basin under the Oil Pollution Act (OPA).
The Louisiana Trustee Implementation Group (Louisiana TIG) has prepared a Draft Phase II Restoration Plan 3.2 (Draft Phase II RP #3.2). In the Draft Phase II RP #3.2, the Louisiana TIG proposes a preferred design alternative for the MBSD Project to be funded under the DWH Louisiana Restoration Area Wetlands, Coastal and Nearshore Habitats restoration type allocation. The preferred alternative (Alternative 1) consists of a controlled sediment and freshwater intake diversion structure in Plaquemines Parish on the right descending bank of the Mississippi River at RM 60.7. The preferred alternative would have a maximum diversion flow of 75,000 cubic feet per second (cfs), which would occur when the Mississippi River gauge at Belle Chase reaches 1,000,000 cfs or higher. The diversion would operate at up to 5,000 cfs (base flow) when the river is below 450,000 cfs at Belle Chase; at river flows above 450,000 cfs, the diversion would be opened fully. At the downstream end of the diversion channel, an engineered area, "outfall transition feature" would be constructed to guide and disperse the channel flow into the Barataria Basin. The preferred alternative is projected to increase land area, including emergent wetlands and mudflats, in the Barataria Basin across the 50-year analysis period relative to natural recovery, with a maximum increase of 17,300 acres in 2050, at the approximate mid-point of the 50-year analysis period.
Comments are being sought on both documents, the USACE MBSD DEIS, and the Louisiana TIG Draft Phase II RP #3.2.
Besides submitting comment here, you may mail your comments with documents, exhibits or other relevant materials to:
U.S. Army Corps of Engineers
New Orleans District
Attn: CEMVN-ODR-E; MVN-2012-2806-EOO
7400 Leake Avenue
New Orleans, LA 70118
The PEPC comment console cannot accept attachments. If you have attachments, please use this email address for commenting and sending your files:
Contact InformationBrad Laborde, USACE, 504-862-2225
Mel Landry, NOAA, 310-427-8711