1. Watermain Rehabilitation Eliminating the need for temporary bypass Derrick Horsman, P.Eng. Alltech Solutions INC

2. Overview  Watermain problems and issues  Spray Lining Overview  Same Day Return to Service ? Eliminating Temporary Bypass

3. The Problem: Despite recent increases in public infrastructure investments, municipal infrastructure is decaying faster than it is being renewed. 1 1 National Guide to Sustainable Municipal Infrastructure. Eliminating Temporary Bypass

4. The Cause: Internal (External) corrosion Watermain breaks Pipe surpassed useful life Eliminating Temporary Bypass

5. Inadequate Fire Protection High Rate of Leakage Eliminating Temporary Bypass

8. What do we do? Eliminating Temporary Bypass

9.  Conventional open cut replacement  Low dig options  Directional drilling  Sliplining  Pipebursting  CIPP lining  Traditional Cleaning and Spray Lining  Cement lining process  Epoxy lining process  Modern Cleaning and Spray Lining  Rapid cure polyurethane system  Rapid cure high build system Eliminating Temporary Bypass

10. TRADITIONAL CLEANING AND SPRAY LINING Cement Lining process Epoxy Lining process Less expensive No reduction in flow capacity No requirement to re-tap services Some disruption Not suitable for certain water types Superseded in Europe by polyurethane lining systems. Requires above ground temporary water supply $$$$$$$ ?? Spray Lining Eliminating Temporary Bypass

11. TRADITIONAL CLEANING AND CEMENT LINING Spray Lining Eliminating Temporary Bypass

14. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Spray Lining Eliminating Temporary Bypass

15. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service Only approved rapid cure material <15 sec Potential for contamination effectively eliminated No leaching Immediate rectification of lining faults Spray Lining Eliminating Temporary Bypass

16. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service No requirement for above ground bypass Improved customer services; multi-stage notification process Operations carried out during working hours Removes potential hazards (ie. Tripping hazards, random breaks, security issues) Spray Lining Eliminating Temporary Bypass

17. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service No requirement for above ground bypass Substantially less expensive - cost of bypass 20-45% of total job (Awwarf) Cost of temporary resources reduced Shorter construction duration Spray Lining Eliminating Temporary Bypass

18. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service No requirement for above ground bypass Substantially less expensive Greatly reduced disruption Minimal setup time Rapid road reinstatement Small job site footprint Spray Lining Eliminating Temporary Bypass

19. Spray Lining Eliminating Temporary Bypass

20. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service No requirement for above ground bypass Substantially less expensive Greatly reduced disruption Some revaluation of capital asset? No reduction in flow capacity Application of 1mm – 5mm Spray Lining Eliminating Temporary Bypass

21. MODERN CLEANING AND SPRAY LINING Rapid Cure Polyurethane system Rapid Cure High Build system Same day return to service No requirement for above ground bypass Substantially less expensive Greatly reduced disruption Some revaluation of capital asset? No reduction in flow capacity No requirement to re-tap services Spray Lining Eliminating Temporary Bypass

22. Spray Lining High Build Structural System 1.Tough enough to survive dynamic loading at failure 2.Ductile enough to accommodate movement after failure 3.Sufficient shear strength to maintain longitudinal continuity 4.Sufficient flexural strength to provide long term corrosion void spanning capability Performance Requirements for Lining Material Eliminating Temporary Bypass

23. Spray Lining High Build Structural System 1 Bar = 14.5 psi @3mm 145psi @5mm 348 psi Eliminating Temporary Bypass

24. Rapid Cure Polyurethane North American Experience City of Saint John, NB City of Moncton, NB Atlantic Health Sciences Corporation, Saint John, NB Millstone Nuclear Power Plant, Niantic, CT, USA Region of Niagara, ON New York Department of Environmental Protection Rapid Cure Polyurethane International Experience United Kingdom, Russia, India, Switzerland and Malaysia More than 8,000 km in the UK by our partner affiliates Spray Lining – Rapid Cure Polyurethane Eliminating Temporary Bypass

25. QUESTIONS ??? Eliminating Temporary Bypass