Presentation to Orleans Levee District Lake Pontchartrain And Vicinity Levees LPV September 2006 Presentation to Orleans Levee District Lake Pontchartrain And Vicinity Levees LPV September 2006

One Team: Relevant, Ready, Responsive, Reliable 19 September 062 Goal Provide protection from storm surge that has a one percent probability of occurring in any year. Phase One: Raise levees to the authorized elevation and perform other critical work. Phase Two: Raise the levee system, including floodwalls, ramps, and gates, to the authorized or 100 year level, whichever is higher.

One Team: Relevant, Ready, Responsive, Reliable 19 September 063 Overall map

One Team: Relevant, Ready, Responsive, Reliable 19 September 064 Project Reaches Multi-district teams led by: LPV101 – St. Louis District LPV102 – Memphis District LPV103 – St. Paul District LPV104 – Rock Island District LPV Gates – Vicksburg District

One Team: Relevant, Ready, Responsive, Reliable 19 September 065 Project Reaches – LPV101 Location: 17th Street Canal to Lakeshore Drive Levee: 325 feet Floodwall: 2,600 feet Ramps and gate structures: No ramps, 7 gates

One Team: Relevant, Ready, Responsive, Reliable 19 September 066 Map of LPV101

One Team: Relevant, Ready, Responsive, Reliable 19 September 067 Project Reaches – LPV102 Location: Lakeshore Drive to Orleans Avenue Canal Levee: 6,500 feet Floodwall: None Ramps and gate structures: 1 ramp, 1 gate

One Team: Relevant, Ready, Responsive, Reliable 19 September 068 Map of LPV 102

One Team: Relevant, Ready, Responsive, Reliable 19 September 069 Project Reaches – LPV103 Location: Orleans Avenue Canal to London Avenue Canal Levee: 7,190 feet Floodwall: 2,330 feet Ramps and gate structures: 4 ramps, 1 gate Sector gate on Bayou St. John

One Team: Relevant, Ready, Responsive, Reliable 19 September 0610 Map of LPV103

One Team: Relevant, Ready, Responsive, Reliable 19 September 0611 Project Reaches – LPV104 Location: London Avenue Canal to IHNC Levee: 9,400 feet Floodwall: 3,400 feet Ramps and gate structures: 4 ramps, 5 gates

One Team: Relevant, Ready, Responsive, Reliable 19 September 0612 Map of LPV104 - West

One Team: Relevant, Ready, Responsive, Reliable 19 September 0613 Map of LPV104 - East

One Team: Relevant, Ready, Responsive, Reliable 19 September 0614 Phase One Construction Levees: Raise existing levees to authorized grade Floodwalls: Modify I-walls if necessary. Concrete pad for scour protection of I-Walls Embankment berm for I-Wall stability Scour protection at I-Wall transitions into levee Gates and ramps: Remove gate at Topaz Street and replace with earthen embankment

One Team: Relevant, Ready, Responsive, Reliable 19 September 0615 Phase Two Construction Levees: Raise levees to 100 year level of protection Floodwalls: Raise or replace walls to provide 100 year level of protection. Scour protection at transitions wall to levee. Raise or replace Sector Gate Structure at Bayou St. John to provide 100 yr level of protection Gates and ramps: Reconstruct gates to provide 100 year level of protection Raise ramps at Canal Boulevard, Lakeshore Drive at Rail Street, Lake Terrace Drive at Bayou St. John, and Lakeshore Drive at intersection with Lake Terrace Drive at London Canal

One Team: Relevant, Ready, Responsive, Reliable 19 September 0616 Construction Schedule

One Team: Relevant, Ready, Responsive, Reliable 19 September 0617 Quality Control and Quality Assurance Processes Independent Technical Review (ITR) Value Engineering (VE) Biddability, Constructability, Operability and Environmental (BCOE) Review

One Team: Relevant, Ready, Responsive, Reliable 19 September 0618 LPV101 Key Design Issues: Floodwall Alignment at Marina Gate L4 relocation Pedestrian Gate L1B abandonment Pump station culvert modification Possible replacement of Gate L1A with ramp

One Team: Relevant, Ready, Responsive, Reliable 19 September 0619 LPV102 Key Design Issues: Topaz St. Gate Closure Canal St. Ramp Raise Parking Lot South of Topaz Gate

One Team: Relevant, Ready, Responsive, Reliable 19 September 0620 LPV103 Key Design Issues: Ramp, Lakeshore Drive at Rail Street Ramp at Lake Terrace Drive Ramp, Lakeshore Drive at London Canal Sector gate at Bayou St. John

One Team: Relevant, Ready, Responsive, Reliable 19 September 0621 LPV104 Key Design Issues: Ramp alternatives at Lakeshore Drive, Franklin Avenue, and Camp Leroy Johnson Drive UNO floodwall Naval Reserve Center alignment Real estate and utilities

One Team: Relevant, Ready, Responsive, Reliable 19 September 0622 Gates Feedback needed to proceed Gate alternatives due to levee / floodwall modifications New gate(s) Relocate L4 Remove L6 Remove L9A Remove L9B Remove L9C Remove L10 Confirm design parameters