Coastal Protection and Restoration Advisory Committee 3 April 2006 D + 217 H - 59

1. Coastal Protection and RestorationAdvisory Committee3 April 2006D + 217H - 59 New Orleans Hurricane Protection System Repair and Restoration

2. Agenda • Existing System • Current Work • Repair and Restoration • Funding • Summary

3. Legend Federal Federal Non-COE Non-Federal Existing New Orleans Area Hurricane Protection

4. Southeast Louisiana Hurricane Protection Components • Repair: • Return pre-Katrina protection to hurricane-damaged components by 1 June 2006 • Restore: • Restore undamaged levees/floodwalls to originally authorized heights by 1 Sep 2007 • Complete: • Accelerated completion of unconstructed portions of authorized projects by Sep 2007 • Improve: • Make improvements to optimize the performance of the existing system • Certify: • Raise system to provide 100 year level of protection • Higher Levels of Protection: • Louisiana Coastal Protection and Restoration Report - preliminary report due June 2006, final December 2007 as of 3/30/06

5. Southeast Louisiana Hurricane Protection System Emergency Supplemental Funding to Date ($M)

6. Southeast Louisiana Hurricane Protection • ADDITIONAL IMPROVEMENTS • The Bush Administration on February 16 asked Congress to support an additional $1.46 billion in new funding for improvements to southeast Louisiana’s hurricane protection system. If approved, the proposal would pay for: • Permanent pumps and closures for New Orleans’ three outfall canals. ($530 million) • Two navigable closures that would prevent hurricane surge from entering the Industrial Canal area. ($350 million) • Storm-proofing existing interior drainage pump stations in Jefferson and Orleans Parishes. ($250 million) • Selective armoring for critical portions of the New Orleans levee system. ($170 million) • Incorporation of Plaquemines Parish west bank, non-federal levees into the federal levee system. ($60 million) • Restoration of critical areas of coastal wetlands and ecosystems needed to improve long-term hurricane and storm protection. ($100 million)

7. Hurricane Protection System Restoration Program Summary • Hurricane Protection System • • 350 miles • 71 pump stations • Damage • • 41 miles severe, 128 miles moderate damage • 34 pump stations were non-operational • Cost • $ 770 Million Percent of Pre-Katrina Protection Restored 53 % Complete

8. Inner Harbor Navigation Canal Percent of Pre-Katrina Protection Restored 64 % Complete

9. Orleans East Bank Percent of Pre-Katrina Protection Restored 29 % Complete

10. New Orleans Outfall Canal Interim Closure Plan • Three locations on Lake Ponchartrain • Protection by 1 June 2006 • Provide New Orleans with rainwater drainage • Prevent storm surge into canals • Pumps permit drainage while closed

11. Outfall Canal Pumping Capacity

12. New Orleans East Percent of Pre-Katrina Protection Restored 72 % Complete

13. Plaquemines Parish Percent of Pre-Katrina Protection Restored 72 % Complete

14. Saint Bernard Parish Percent of Pre-Katrina Protection Restored 74 % Complete

15. Levees / Floodwalls Not At Authorized Elevation Due to Subsidence and Elevation Changes * Includes Mississippi River Levees

16. Southeast Louisiana HPS Emergency Improvements Outfall Canal Closures • Three locations on Lake Ponchartrain • Prevent storm surge into canals • Provide New Orleans with rainwater drainage • Removes 14 miles of floodwalls from primary HPS

17. Southeast Louisiana HPS Emergency Improvements Navigable Flood Gates • Two Locations: • Seabrook • GIWW/MRGO • Precise location GIWW/MRGO yet to be determined

18. Southeast Louisiana HPS Emergency Improvements Navigable Flood Gates • Prevents storm surge from Industrial Harbor area • Removes 20 miles of levees and floodwalls from primary HPS

19. Southeast Louisiana HPS Emergency Improvements Selective Armoring • Levees and floodwalls will be armored at critical points to resist damage from overtopping • Transitions points between levees, floodwalls, and other structures will also be armored

20. Southeast Louisiana HPS Emergency Improvements Storm Proof Pump Stations • Dozens of pump stations in Orleans, Jefferson, St. Bernard, & Plaquemines Parish • Each station is unique. Study underway to determine specific needs • Potential improvements include emergency power supplies, raising critical equipment, waterproofing, and hardening

21. Southeast Louisiana HPS Emergency Improvements Incorporate Non-Federal Levees • Raise and strengthen 23 miles of levees on West Bank in Plaquemines Parish • Protect against storm-surge from Barataria Basin. • Keep Highway 23 evacuation route open longer

22. Southeast Louisiana HPS Emergency Improvements Ecosystem Restoration • Reversal of wetland losses in areas affected by navigation channels, oil and gas channels, or other channels and for modification of the Caernarvon Freshwater Diversion structure or its operation.

23. Addition Height Required 1 Foot Freeboard D/2 (Waves) 100 Yr Stillwater BFE if Levee Not Certified D MSL Levee Certification Current BFE Geotechnical/Structural Integrity as of 3/30/06

24. Costs to Certify Levee Systemsby Hydraulic Area

25. Costs to Certify Levees by Hydraulic Area – Details (Population) * Area A will be certifiable in 2010 upon completion of the work already authorized and funded, as well as the work proposed in the Supplemental now before Congress. Sources: USACE, FEMA, HUD, Census

26. Summary • Hurricane Katrina made landfall on 29 Aug 2005, overwhelming the hurricane protection system in the New Orleans area • Temporary repairs and a massive un-watering effort was completed in 53 days • An independent task force is evaluating the performance of the hurricane protection system • Pre-Katrina protection restored by 1 June 2006 • Additional improvements will be completed by September 2007 • HPS Emergency Improvements being considered by Congress • The South Louisiana Hurricane Protection and Restoration Technical Report - December 2007

27. Questions

28. Coastal Protection and RestorationAdvisory Committee3 April 2006 New Orleans Hurricane Protection System Repair and Restoration