May 2010 Louisiana Coastal Protection and Restoration Authority Permanent Protection System Opinion of Probable Cost Volume I Options 1, 2, and 2a Report Prepared for Sewerage & Water Board of New Orleans in partnership with the Southeast Louisiana Flood Protection Authority- East, Jefferson Parish Department of Public Works, and the Louisiana Coastal Protection and Restoration Authority Photo courtesy of USACE Graphics Water Prepared for: Sewerage & Water Board Prepared by: of New Orleans AECOM New Orleans, LA New Orleans, Louisiana Color 60149879.0005 May 7, 2010 Permanent Protection System Opinion of Probable Cost Options 1, 2, and 2a AECOM Water i Contents Executive Summary ............................................................................................................. ES-1 1.0 Option 1 – Construction of New Permanent Gated Pump Stations at the Mouths of the 17th Street, Orleans Avenue, and London Avenue Canals ................................. 1-1 1.1 Option 1 - Basis of Opinion of Probable Cost ..................................................................... 1-3 1.2 Summary of Findings for 17th Street Canal – Option 1...................................................... 1-4 1.2.1 Mechanical and Electrical .....................................................................................1-6 1.2.2 Geotechnical ......................................................................................................... 1-9 1.2.3 Real Estate ..........................................................................................................1-10 1.3 Summary of Findings for Orleans Avenue Canal – Option 1 ........................................... 1-11 1.3.1 Mechanical and Electrical ...................................................................................1-13 1.3.2 Geotechnical ....................................................................................................... 1-15 1.3.3 Real Estate ..........................................................................................................1-15 1.4 Summary of Findings for London Avenue Canal – Option 1 ............................................ 1-15 1.4.1 Mechanical and Electrical ...................................................................................1-18 1.4.2 Geotechnical ....................................................................................................... 1-19 1.4.3 Real Estate ..........................................................................................................1-19 1.5 Assumptions ....................................................................................................................... 1-20 2.0 Option 2 – Construction of New Replacement Pump Stations at the Mouths of the 17th Street, Orleans Avenue, and London Avenue Canals with Deepened Outfall Canals ............................................................................................................................. 2-21 2.1 Option 2 - Basis of Opinion of Probable Cost ................................................................... 2-22 2.2 Summary of Findings for 17th Street Canal – Option 2.................................................... 2-25 2.2.1 Mechanical and Electrical ...................................................................................2-26 2.2.2 Geotechnical ....................................................................................................... 2-26 2.2.3 Real Estate ..........................................................................................................2-28 2.3 Summary of Findings for Orleans Avenue Canal – Option 2 ........................................... 2-31 2.3.1 Mechanical and Electrical ...................................................................................2-32 2.3.2 Geotechnical ....................................................................................................... 2-32 2.3.3 Real Estate ..........................................................................................................2-32 2.4 Summary of Findings for London Avenue Canal – Option 2 ............................................ 2-33 2.4.1 Mechanical and Electrical ...................................................................................2-34 2.4.2 Geotechnical ....................................................................................................... 2-34 2.4.3 Real Estate ..........................................................................................................2-34 2.5 Bridges ............................................................................................................................... 2-35 May 2010 AECOM Water ii 3.0 Option 2a – Construction of New Replacement Pump Stations at the Mouths of the 17th Street, Orleans Avenue, and London Avenue Canals with Deepened Outfall Canals and the Addition of a Pump Station at Hoey’s Basin that Pumps to the Mississippi River .................................................................................................... 3-37 3.1 Summary of Findings for 17th Street Canal – Option 2a ................................................. 3-39 3.1.1 Mechanical and Electrical ...................................................................................3-40 3.1.2 Geotechnical ....................................................................................................... 3-42 3.1.3 Real Estate ..........................................................................................................3-42 3.2 Summary of Findings for Orleans Avenue Canal – Option 2a ......................................... 3-42 3.3 Summary of Findings for London Avenue Canal – Option 2a ......................................... 3-43 3.4 Bridges ............................................................................................................................... 3-43 4.0 Conclusions ................................................................................................................... 4-44 List of Appendices Appendix A Opinion of Probable Cost – Data Appendix B Supporting Documentation Pump Station Mechanical/Electrical Canal Cross Sections Real Estate Geotechnical Appendix C Bridge Report May 2010 AECOM Water iii List of Tables Table 1-1. Existing DPS 6 Major Equipment Option 1 Table 1-2. Hydraulic Conditions for 17th Street Canal Pump Station Table 1-3. Quantity of Pumps Required for 17th Street Canal Pump Station Table 1-4. Current Prices for Pump/Motor Equipment – 17th Street Canal Pump Station Table 1-5. Generators and Fuel Tanks – 17th Street Canal Pump Station Table 1-6. Generalized Pile Capacities Table 1-7. Existing DPS 7 Major Equipment Table 1-8. Hydraulic Conditions for Orleans Avenue Canal Pump Station Table 1-9. Quantity of Pumps Required for Orleans Avenue Canal Pump Station Table 1-10. Current Prices for Pump/Motor Equipment – Orleans Avenue Canal Pump Station Table 1-11. Generators and Fuel Tanks – Orleans Avenue Canal Pump Station Table 1-12. Existing DPS 3 Major Equipment Table 1-13. Existing DPS 4 Major Equipment Table 1-14. Hydraulic Conditions for London Avenue Canal Pump Station Table 1-15. Quantity of Pumps Required for London Avenue Canal Pump Station Table 1-16. Current Prices for Pump/Motor Equipment – London Avenue Canal Pump Station Table 1-17. Generators and Fuel Tanks – London Avenue Canal Pump Station Table 2-1. Conceptual Pump Station Footprint 17th Street Canal – Option 2 Table 2-2. Conceptual Pump Station Footprint Orleans Avenue Canal – Option 2 Table 2-3. Conceptual Pump Station Footprint London Avenue Canal – Option 2 Table 2-4. Bridge Modifications Due to Deepened Canals Table 3-1. Conceptual Pump Station Footprint 17th Street Canal – Option 2a Table 3-2. Hydraulic Conditions for 17th Street Canal Pump Station Table 3-3. Quantity of Pumps Required for 17th Street Canal Pump Station Table 3-4. Current Prices for Pump/Motor Equipment – 17th Street Canal Pump Station Table 3-5. Generators and Fuel Tanks – 17th Street Canal Pump Station Table 3-6. Hydraulic Conditions for Hoey’s Basin Pump Station Table 3-7. Quantity of Pumps Required for Hoey’s Basin Pump Station Table 3-8. Current Prices for Pump/Motor Equipment – Hoey’s Basin Pump Station Table 4-1. Opinion of Probable Cost – Option Summary Table 4-2. Option 2 Tunneling – ROM Probable cost May 2010 AECOM Water iv List of Figures Figure ES-1. Three Canals Showing Location of DPS 3, 4, 6, and 7 Figure ES-2. Aerial Vicinity Map of Project Area in the City of New Orleans Figure ES-3. Existing ICS Facility at the 17th Street Canal Figure 1-1. Existing 17th Street Canal Typical Cross Section Figure 1-2 Conceptual Drawing of Adaptable Pump Station With Deep Foundation Figure 1-3. Aerial View of DPS 6 Figure 1-4. Old City Dry Weather Flow Figure 1-5. General Schematic Section View of a Vertical Column Pump Figure 1-6. Pump Spacing for 17th Street Canal Pump Station Figure 1-7. 17th Street Canal Proposed Permanent Protection Location Figure 1-8. Aerial View of DPS 7 Figure 1-9. Pump Spacing for Orleans Avenue Canal Pump Station Figure 1-10. Orleans Avenue Canal Proposed Permanent Protection Location Figure 1-11. Aerial View of DPS 3 Figure 1-12. Aerial View of DPS 4 Figure 1-13. Pump Spacing for London Avenue Canal Pump Station Figure 1-14. London Avenue Canal Proposed Permanent Protection Location Figure 2-1. Three Canals Showing Location of DPS 3, 6, and 7 Figure 2-2. Conceptual Drawing of Formed Suction Intake Modified Pump Station Figure