1. Sewerage & Water Board of New Orleans Water Hammer Hazard Mitigation Project February 4, 2015

2. http://swbnola.org Sewerage & Water Board of New Orleans Water Hammer Hazard Mitigation Project  FEMA Proposed Project Funded at $48 M –Designed to help reduce future leaks and losses of water pressure in the water distribution system. –Lessen the impact of the loss of power that causes major water hammer events in pipelines.

3. http://swbnola.org Sewerage & Water Board of New Orleans What is a Water Hammer?

4. http://swbnola.org What is a Water Hammer?

5. http://swbnola.org What is the impact?  Shockwaves in the system cause damage.  Leads to eventual water main breaks.

6. http://swbnola.org Why Does It Happen Here?  Water hammer is produced as a result of the types of pumps and valves at the Carrollton WTP. –Pumps with no speed control –Valves that slam shut, instead of opening or closing slowly  Loss of power –Board has experienced 2 low pressure events from loss of power that resulted in Boil water advisories on the East Bank. –After Katrina, Board has continued to experience a significant number of commercial power outages

7. http://swbnola.org How Do We Stop It?  Rehabilitation and upgrades of the pumping system. –Rehabilitation of Water Pumps and Motors –Installation of New Valves –Installation of Two Small Water Tanks –Construction of Two Elevated Water Storage Tanks

8. http://swbnola.org Pumps/Motors/Valves Sewerage & Water Board of New Orleans  A complete overhaul of our water distribution system.

9. http://swbnola.org  Construction of Two Off-site Water Tanks –2000 gallon pressurized tanks –Tanks are housed in a building –Building footprint 24 ft. by 20 ft. by 15 ft.  Locations –15311 Chef Menteur Highway at the site of the existing water storage tank. –8933 Stroelitz Street. Sewerage & Water Board of New Orleans Small Water Tanks

10. http://swbnola.org  Construction of Two Off-site Water Tanks –2000 gallon pressurized tanks –Tanks are housed in a building –Building footprint 24 ft. by 20 ft. by 15 ft.  Locations –On Chef Menteur Highway at the site of the existing water storage tank. –On Stroelitz Street. Sewerage & Water Board of New Orleans Small Water Tanks

11. http://swbnola.org Sewerage & Water Board of New Orleans

12. http://swbnola.org Sewerage & Water Board of New Orleans Small Water Tanks

13. http://swbnola.org Small Water Tank Building Sewerage & Water Board of New Orleans

14. http://swbnola.org Sewerage & Water Board of New Orleans

15. http://swbnola.org Sewerage & Water Board of New Orleans

16. http://swbnola.org Elevated Storage Tanks  Construction of Two Water Tanks –2 Million Gallons Each –No more than 200 feet high –Base is approximately 40 feet in diameter Sewerage & Water Board of New Orleans

17. http://swbnola.org Elevated Storage Tanks  Upgrades will allow the SWBNO to continuously provide water to the City Sewerage & Water Board of New Orleans

18. http://swbnola.org Sewerage & Water Board of New Orleans

19. http://swbnola.org Sewerage & Water Board of New Orleans

20. http://swbnola.org Sewerage & Water Board of New Orleans

21. http://swbnola.org Sewerage & Water Board of New Orleans

22. http://swbnola.org Sewerage & Water Board of New Orleans At the plant near the intersection of Leonidas and Panola Street At the plant in the visitors parking lot and adjacent to the Claiborne Ave.

23. http://swbnola.org Sewerage & Water Board of New Orleans

24. http://swbnola.org When Will It Be Done?  All projects are currently in design.  Construction scheduled to begin in Fall 2015 after completion of SELA.  Completion Estimated Early 2018 Sewerage & Water Board of New Orleans

25. http://swbnola.org Sewerage & Water Board of New Orleans Re-Building the City’s Water Systems for the 21 st Century