Trenchless Technology for Sanitary and Storm Rehabilitation

1. Trenchless Technology for Sanitary and Storm Rehabilitation Presented by Jeff Beck, P.E. Insituform

2. Trenchless Technology Cured in Place Pipe � Rehabilitating Sanitary and Storm Sewers New CIPP innovations AISC � Air Inversion Steam Cure iPlus� Composite iPlus� Infusion Green Initiative using Trenchless

3. Global Infrastructure Crisis 2009 Report Card for America�s Infrastructure � per ASCE Wastewater = D � Bridges = C Investing in infrastructure, has proven to be beneficial in the past, with a $7 return for every $1 of investment Trenchless (no-dig) technologies are more cost-effective and less disruptive pipeline solutions to other traditional methods These technologies benefit the health of people and the economy

4. Global Water Crisis The Clean Water Act was established 35 years ago to help prevent spills and environmental damage The EPA estimates there are more than 40,000 sewer spills each year Sinkholes are becoming a more common occurrence Insituform�s flagship cured-in-place pipe technology helps to address these and other problems

5. Insituform was established in 1971 with the invention of the cured-in-place pipe method of underground pipeline rehabilitation Developed by Eric Wood in the UK, the Insituform process was the first to rehabilitate underground pipelines without digging and disruption Insituform History

6. Developed in 1971, cured-in-place pipe (CIPP) is a trenchless technology developed by Insituform The end product is a jointless, seamless, pipe-within a pipe that protects against spills, breaks and pipeline leakage Insituform has installed over 15,000 miles of CIPP and has been the industry leader for over 35 years What is CIPP?

7. Benefits Eliminate infiltration and exfiltration Restore structural integrity Prevent sinkholes and surface settlement Eliminate joints, root intrusion and leaks Increase flow capacity Protect pipes from corrosion Increase pipe strength Reduce maintenance Minimal traffic disruption Fewer social costs to open-cut Suitable for irregularly shaped pipes and changes  in pipe diameter

8. CIPP Installation Thermosetting resin is injected into a felt tube The tube is inserted into an existing host pipeline by either pull-in or inversion The tube is inflated to the size of the host pipe The CIPP tube is cured using hot water or steam Ends are cut and the final product is a fully-functional pipe-within-a-pipe

9. CIPP Installation

10. Trenchless technology is superior to dig and replace for a variety of reasons Cost-effectiveness Ease of Design Production rates Extends underground assets Benefits environment Why Trenchless?

11. CIPP Affordability

12. Open Cut Pricing

13. Wet Out Insituform has seven wet out facilities strategically located throughout North America All facilities are ISO-certified and comply to industry safety standards Quality is constantly regulated and makes use of the most advanced wet out technologies

14. Resin - Once cured, thermosetting resin retains its shape with no residual memory. Resin types: Polyester Vinyl Ester Epoxy Polyester resins are most used in gravity sewer rehabilitation due to their high flexural modulus, low tensile elongation and good chemical resistance. Resin

15. Design and Testing ASTM F1216 ASTM F1743 100 Year Design Life Third Party Testing Test Results From Previous Installations

16. CIPP Technical Envelope

17. Air Inversion Steam Cure (AISC) Produces same high quality end product in shortened installation cycle Specialized installation equipment to minimize footprint at manhole Insituform material modified for steam cure Available for a variety of diameter pipe (8� � 72�) Over 2 million feet installed using steam to date

18. High energy steam cure shortens installation cycle Off street installation made with little disruption Steam eliminates grade limitations Minimal water required for cure Air-Inversion Steam-Cure (AISC)

19. 30� Sewer � St. Louis MSD AISC

21. iPlus Composite� iPlus Composite� is suitable for the rehabilitation of medium to large diameter pipelines Reinforced with carbon or glass fibers, it provides more strength and greater capacity Thinner walls = less resin = better for the environment

22. Here�s a photo of a 24� CP tube that we installed into PVC pipe as a pull-in, air-invert, steam cure test installation. We�ll take a closer look at the section on the left side. (Highlight area of close-up)Here�s a photo of a 24� CP tube that we installed into PVC pipe as a pull-in, air-invert, steam cure test installation. We�ll take a closer look at the section on the left side. (Highlight area of close-up)

23. From the outside in: Total wall thickness = 14mm 1) PVC pipe 2) PE seam �tape� on outer coated layer. Since this is a DOT type of installation, there is a coated layer on both the inside and outside of the Insituform CP. 3) Thin layer of normal Insituform felt 4) Glass fiber reinforced layer 5) Standard Insituform felt �core layers� 6) Carbon fiber reinforced layer 7) Protective layer of normal �Insituform� From the outside in: Total wall thickness = 14mm 1) PVC pipe 2) PE seam �tape� on outer coated layer. Since this is a DOT type of installation, there is a coated layer on both the inside and outside of the Insituform CP. 3) Thin layer of normal Insituform felt 4) Glass fiber reinforced layer 5) Standard Insituform felt �core layers� 6) Carbon fiber reinforced layer 7) Protective layer of normal �Insituform�

24. iPlus Composite� Sandwich technology High modulus (stiff) outer �skins� bonded to a core with lower material properties

25. Completed iPlus Composite

26. iPlus Infusion� - ASTM 1743 Small installation footprint minimizes disruption Ideal for small backyard easements 700+ ft installations Boiler truck can be located 250 ft from MH

27. iPlus Infusion� Shorter cycle time Smaller footprint Shorter sewer outage Reduced equipment on street Minimal traffic disruption Greater installation flexibility

28. iPlus Infusion� Installation Step One: Tubes �wet-out� using controlled resin impregnation system Step Two: A resin-saturated tube is pulled into damaged pipe

29. iPlus Infusion� Installation Step Three: Air is used to inflate the tube and steam is used to cure the resin Step Four: Service laterals are restored internally

30. Steam Cure 50% reduction in energy usage and 98% reduction in water usage over traditional water inversion/hot water cure Virtually eliminates discharge of process water into sewers No grade limitations Shorter cool down allows lateral reinstatement to take place sooner

31. Reduced Equipment Requirements Smallest jobsite footprint of any CIPP process Portable equipment Ideal for off-road installations Minimal traffic disruption Reduces stress on tube Shot lengths up to 230m Meets or exceeds the physical properties set forth in ASTM F1743

32. Technical Envelope Infusion�

33. Insituform uses air and steam energy where applicable Cuts down water use by 95% Tube can be made from up to 98% recycled material iPlus Composite and other technologies cut down on need for resin and other petroleum-based products CIPP rehabilitation can prevent sewer spills, oil spills and water main breaks

34. Questions?