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Mississippi River Long Distance Sediment Pipeline Project. Louisiana Office of Coastal Protection and Restoration. Coastal Protection and Restoration Authority Meeting August 19 th , 2009. Presentation Overview. Goals and Funding Project Implementation Potential Alternatives

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mississippi river long distance sediment pipeline project

Mississippi River Long Distance Sediment Pipeline Project

Louisiana Office of Coastal Protection and Restoration

Coastal Protection and Restoration Authority Meeting

August 19th, 2009

presentation overview
Presentation Overview
  • Goals and Funding
  • Project Implementation
  • Potential Alternatives
  • Crossover Site Selection
  • Interaction with other Projects
  • Current Activities
  • Schedule
project goal
Project Goal

Design and construct an efficient sediment delivery pipeline system from a renewable resource in the Mississippi River to strategic locations in Barataria Basin.

project funding
Project Funding
  • This project is funded by the Coastal Impact Assistance Program (CIAP) and Surplus Funds.
  • Current project budget is approximately $66.5M
    • CIAP $34M
    • Surplus $32.5M
  • CIAP funds contributed by the State of Louisiana and Plaquemines, Jefferson, and Lafourche Parishes
phased implementation
Phased Implementation
  • Expedited Phase 1:
    • Perform comprehensive planning
    • Select the “crossover” location
    • Design and construct the “crossover” infrastructure (construction advertisement planned for December 2009)
  • Later Phases: Design and construction of pipeline extensions into “Area of Need” placement sites in the Barataria Basin
potential crossover sites
Potential “Crossover” Sites
  • Criteria for selection:
    • Proximity to Area of Need
    • Land Rights and Development Constraints
    • Constructability
    • Sediment Sources
    • Oyster Leases
potential sediment sources
Potential Sediment Sources

Areas shallower than -70ft

screening criteria of crossover site
Sediment Supply:

Renewable borrow sources

Proximity to beneficial use opportunities

River Navigation & Existing River Bank Facilities

Land rights

Environmental & Permitting:

Impacts to oyster leases

Environmental impacts

Permitting constraints

Restoration Objectives:

Proximity and access to restoration opportunities

Restoration benefits

Costs:

Distances to Areas of Need

Distance to Lafourche Parish

Crossings

Use of existing infrastructure

Synergistic opportunities with other projects

Connection to natural corridor (e.g., waterway)

Screening Criteria of Crossover Site
west point a la hache location
West Point a la Hache Location
  • Straightforward land rights
  • Nearby renewable borrow sites with no navigation issues
  • Proximity to beneficial sediment reuse opportunities
  • Greater indirect benefits by reducing storm and salinity impacts to large areas to the north
  • Proximity to an existing corridor that provides access to large portions of the Barataria Basin
  • Potential to combine permitting efforts with Lake Hermitage project and reduce schedule
  • Potential to link on-going marsh creation projects
interaction with other projects
Interaction with other Projects
  • Lake Hermitage and West Point a la Hache can “piggy-back” on the Crossover project
    • Cost savings
    • Streamline permitting schedule (permit modification only)
    • Multiple existing projects can use same pipeline and infrastructure crossing
    • Maximum use of existing data collection efforts
    • Previously designed marsh creation project with permitted borrow source to begin using Long Distance Sediment Pipeline infrastructure immediately
current activities
Current Activities
  • Land Rights Acquisition
  • Field-data collection
  • Preliminary Design
  • Cost Estimating
  • Stakeholder Presentations
  • Over-all project planning (Phase I & II)
    • Detailed modeling of borrow source re-fill rates
    • Geomorphic analysis of regional sediment budgets
    • Corridor alignments and placement sites
    • Pipeline construction methodology
    • Scheduling
schedule
Schedule
  • 30% Design: August 2009
  • Crossover Permit Modification Application:
    • “Pre-Application” Meeting June 2009
    • Permit Modification Request September 2009
  • Final (95%) Design: October 2009
  • Bid Documents: November 2009
  • Advertise for Construction: December 2009
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