New Orleans Hurricane Protection System Overview by Mike Park HPS Program Manager Task Force Hope U.S. Army Corps of Engineers March 19, 2008

One Team: Relevant, Ready, Responsive, Reliable 100-Year Level of Protection

One Team: Relevant, Ready, Responsive, Reliable JunSepJunSepJunSepJunSepJunSepJunSep LaCPR Subsequent Actions Peak Hurricane Season CY IHNC SELA Pump Repair Storm Proof Perimeter Protection Interior Drainage Permanent Pumping Plaquemines Larose to GM Grand Isle Planning Current Date Required Funding (10/08) 100 Year Protection (6/1/11) Pre-award Construction Baseline Schedule: Levees, Floodwalls, Armoring Current System Programmatic Schedule * Assumes required funding received beginning of FY09

One Team: Relevant, Ready, Responsive, Reliable US Army Corps of Engineers ® Cost to Complete Estimate $7.1B – current appropriation provides improved system protection $7.5B – total estimated additional funds required to restore authorized and provide 100-yr level of System protection and complete SELA $5.8B – included in FY09 President’s budget request $7.1B – current appropriation provides improved system protection $7.5B – total estimated additional funds required to restore authorized and provide 100-yr level of System protection and complete SELA $5.8B – included in FY09 President’s budget request

One Team: Relevant, Ready, Responsive, Reliable US Army Corps of Engineers ® Construction Status Total expected construction contracts: ~298 Awarded 140+ construction contracts for $1.4B Overall Program Estimate: ~$14.6B 2008 and Beyond 2008 – Anticipate awarding about 40+ contracts for around $2B Award IHNC Surge Barriers w/Advance Measures Award 30+ contracts for Levees, Floodwalls and Armoring Award 3 contracts for pump station repairs Award 3 contracts for SELA (interior drainage) Total expected construction contracts: ~298 Awarded 140+ construction contracts for $1.4B Overall Program Estimate: ~$14.6B 2008 and Beyond 2008 – Anticipate awarding about 40+ contracts for around $2B Award IHNC Surge Barriers w/Advance Measures Award 30+ contracts for Levees, Floodwalls and Armoring Award 3 contracts for pump station repairs Award 3 contracts for SELA (interior drainage)

One Team: Relevant, Ready, Responsive, Reliable Rescheduled Contract Awards

One Team: Relevant, Ready, Responsive, Reliable Construction Complete

One Team: Relevant, Ready, Responsive, Reliable IHNC Surge Protection $800M reallocation approved – all funds in place for award Project Partnering Agreement (PPA) negotiations ongoing Targeting award of Design-Build contract March 08 – includes advance measures Estimating construction start – June 08

One Team: Relevant, Ready, Responsive, Reliable Ongoing Construction Perimeter Protection LPV – Verret to Caernarvon Raise to 17.5’–20.5’ LPV 142 – IHNC to Paris Rd. Raise to 15’ LPV 103 – Orleans Canal to London Canal Raise to 19.5’ LPV 104 – London Canal to IHNC Raise to 17.5’-20.5’ LPV 102 – Lake Marina to Orleans Canal Raise to 19’ LPV 4.1 – St. Charles Levee Reaches 1A, 1B, 2A Raise to 13’-14’ WBV 18.1 – Hwy 90 to Lake Cat. PS Raise to 11’-12’ WBV 15a.1 – Lake Cat PS to Segnette State Park Raise to 12’ WBV 14b.1 – Orleans Village to Hwy 45 Raise to 12’ WBV 01 – Sectorgate to Boomtown Floodwalls Raise to 14’ WBV 6a.1 – Belle Chasse to Hero Cutoff Raise to 10’ WBV 02b – Boomtown to Hero PS Floodwalls Raise to 14’

One Team: Relevant, Ready, Responsive, Reliable STORM SYSTEM CONSEQUENCES Forensic Analysis and Risk-Based System-Wide Assessment Results are “in the Ground” IPET and Risk Informed Planning

One Team: Relevant, Ready, Responsive, Reliable All Hurricanes are NOT Created Equal Hurricane Size Matters Low Pressure Very Low Pressure Click Mouse For Animation Hurricane Intensity Hurricane Size (Radius of Max Wind Field – Nautical Miles) Storm surge potential increases as a function of intensity, size and track. Though Rita and Betsy had similar intensities, Betsy, because of its larger size, had the potential to produce a 4 foot higher storm surge. 37% 7 ft 10 ft 13 ft 17 ft 23 ft 27 ft 20 ft Camille-5 Katrina-3 Betsy-3 Rita-3 Surge Potential

One Team: Relevant, Ready, Responsive, Reliable Hurricane Paths Considered in the Risk Analysis 3 HPS Geometries3 HPS Geometries –Pre-Katrina –Current (1 June 07) –100-year LOP (~2011) 152 storm hydrographs152 storm hydrographs 350+ features350+ features –Floodwalls –Levees –Pumps Stations → 62,928 Hurricane Hydrographs Hydrographs

One Team: Relevant, Ready, Responsive, ReliableHAZARDRISK SYSTEMPERFORMANCE Water levels – surge and wave height at 138 locations 152 hurricanes - 25-yr to 5,000 + frequency Variety of intensities, sizes, speeds and tracks Pre-Katrina, Current, Future Performance of entire 350- mile system (138 reaches, 350 features) Overtopping, potential breaches, rainfall, pumping Probability of flooding in each sub- basin Potential Property damage and loss of life caused by flooding Based on pre-Katrina population and property conditions for each sub-basin in New Orleans and vicinity RISK = Chance of Flooding from Hurricanes X Loss of Property or Life CONSEQUENCES Index of relative losses in terms of Life & Property IPET Risk Assessment Model

One Team: Relevant, Ready, Responsive, Reliable Event Tree

One Team: Relevant, Ready, Responsive, Reliable Risk Methodology

One Team: Relevant, Ready, Responsive, Reliable Understanding the Flood Maps 0-2 ft 2-4 ft 4-6 ft 6-8 ft > 8 ft Shallow Flooding Deep Flooding Click Mouse For Animation Color coding on maps indicates depth of inundation.Color coding on maps indicates depth of inundation.

One Team: Relevant, Ready, Responsive, Reliable 2007, 50-Year 2007, 100-Year 2007, 500-Year Flood Depth Maps

One Team: Relevant, Ready, Responsive, Reliable Pre-Katrina, 1% Hurricane Flood Depth, 0% Pumps 2007, 1% Hurricane Flood Depth, 0% Pumps 2011, 1% Hurricane Flood Depth, 0% Pumps 2011, 1% Hurricane Flood Depth, 100% Pumps 2007, 1% Hurricane Flood Depth, 100% Pumps Pre-Katrina, 1% Hurricane Flood Depth, 100% Pumps 2011, 1% Hurricane Flood Depth, 50% Pumps 2007, 1% Hurricane Flood Depth, 50% Pumps Pre-Katrina, 1% Hurricane Flood Depth, 50% Pumps 1% Hurricane Based Flood Depth Maps

One Team: Relevant, Ready, Responsive, Reliable Before Katrina, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 0% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable On June 1, 2007, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 0% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable With the 100-year level of protection, you have a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 0% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable Before Katrina, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 50% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable On June 1, 2007, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 50% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable With the 100-year level of protection, you have a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 50% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable Before Katrina, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 100% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable On June 1, 2007, you had a 1% chance every year of flooding this deep from Hurricanes Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 100% Pumping Capacity March 08

One Team: Relevant, Ready, Responsive, Reliable With the 100-year level of protection, you have a 1% chance every year of flooding this deep from Hurricanes March 08 Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Notes: The depth map tool is a relative indicator of progress, over time, demonstrating risk reduction as a function of construction progress The water surface elevations are mean values The scale sensitivity of the legend is +/- 2 feet The info does not depict interior drainage modeling results The storm surge is characterized as the result of a probabilistic analysis of 5 to 6 storm parameters of a suite of 152 storms and not a particular event Assumes 100% Pumping Capacity