Cured in Place Pipe Lining What is it and Why is it Important?

1. Cured in Place Pipe LiningWhat is it and Why is it Important? NASSCO/ACMA October 12 Caucus

2. Cured in Place Pipelining(CIPP) • What is CIPP? • Where is CIPP Used? • Why is CIPP Used? • How is CIPP Installed? • Who is impacted by CIPP? • Why are we Interested in CIPP?

3. What is Cured-In-Place Pipe (CIPP) • A resin saturated fabric liner that is typically installed into a deteriorated pipeline; then by applying heat or ultra violet light, the liner is cured WITHOUT EXCAVATION

4. What is CIPP? • A process used to renew old deteriorated pipeline • Uses the old pipe as a mold to form the new pipe • Can renew pipe from 4-inch to over 100-inches in diameter • Available in a number of material choices

5. Work Requirements CIPP vs Excavation Example: 400 feet of 8” sewer pipe replacement using CIPP: • Open up existing manhole cover at each end of a 400 foot section of pipe, • Clean the existing pipe between the manholes of all debris • Temporarily manage existing sewage flows • insert a resin saturated tube into the existing using it as a mold without excavation • Cure the resin material • Robotically reconnect the affected homes without excavation • Replace the old pipe with a new 50-100 year life pipe in 4-6 hours of minimum traffic and no disruption of the ground surface

6. Work Requirements CIPP vs Excavation • Example: 400 feet of 8” sewer pipe replacement using Excavation • Excavate and remove the existing pipe • Install pumps to handle existing flows • Install trench support for worker safety • Dewater the excavation of ground water • Remove and dispose of unsuitable materials • Provide new backfill material for new pipe • Install new pipe and replace home service connection • Backfill the pipe and compact • Maintain backfilled trench to allow settlement and trench compaction

7. Work Requirements CIPP vs Excavation • Restore all other utilities affected by the excavation activities • Temporarily pave the trench area to reduce dust and dirt • Final pave the street curb-curb for the limits of the excavation to restore the integrity of the street • Time to complete 1 to 2 weeks of resident disruption, loss of local businesses, traffic congestion and associated dust, air pollution and carbon emissions

8. Where Can CIPP Be Used? • Water and Sewer Sewers • Collectors and Mains • Laterals and Private Pipelines • Force Mains • Treatment Plant Piping • Industrial Pipelines • Gas Mains • Drainage and Downspouts • Process Pipelines • Air Vents • Highway & railroad culverts • Virtually any conduit that needs renewal

9. Why is CIPP Used? CIPP Offers: • Lower Project Costs • Lower Social Costs • Lower Environmental Costs • High Quality Results

10. Why is CIPP Used? Lower Project Costs(1): • Significantly less excavation work • Less road restoration • Less repair of adjacent utilities • Less costs associated with traffic control • Faster installation meaning less crew time • Safer work environment Lower Social Costs • Faster Installation - For the same project trenchless reconstruction is usually a matter of hours versus weeks • Less disruption to residents • Lower impact on local business • Less driver delays and traffic disruption • Less impact to pavement and sidewalks • Less damage to trees and shrubs 1. Cost comparisons can vary based on factors such as depths, pipe sizes, and local availability of CIPP contractors.

11. Why is CIPP Used? Lower Environmental Costs: • Faster Installation • Significantly lower (up to 97%) greenhouse gas emissions • Decreased project equipment time • Decreased traffic pollution • Decreased site runoff • Decreased noise pollution • Less Disturbance to existing conditions High Quality Results • Longevity – 50 to 100 year design life • Less infiltration – no joints • Increased capacity – smooth surface • Corrosion and Abrasion resistance • Structural strength

12. How is CIPP Installed? • Materials • Thermoset Resin (usually polyester) • Felt Tubes • Resin Impregnation (Wet-Out)

13. How is CIPP Installed? • Installation – Pull or Invert • Curing – Heat or UV • Reinstate Laterals and Cut Terminal Locations (Manholes, etc.)

14. Who is Impacted by CIPP? • CIPP Contractors - As of 2010, there were more than 180 crews¹ in North America installing the CIPP technology in municipal, industrial and other utility applications. • All Parties to EPA SSO/CSO Consent Decrees • Municipal and Private Owners of • Municipal sewers • Water systems • Industrial Piping • Gas Mains • Any Utility using Pipelines • Utility Rate Payers and Homeowners

15. Why are we Interested in CIPP? • CIPP uses Polyester, or Styrenated Resins • Polyester resins can be formulated to exhibit a variety of properties, ranging from hard and brittle to soft and flexible. • Polyester resins have the advantage of low viscosity, fast cure and low cost. • Polyester resin probably has the best overall corrosion resistance against domestic sewage and is generally the least expensive, causing it to be the most commonly used resin for renewal of existing sewers.

16. Why are we Interested in CIPP? • Polyester, or Styrenated Resins are a major component of CIPP because: • Significantly lower in material cost • Proven success for over 40 years • Trained work force • Consistent quality • Other resins unproven, don’t have long range experience • Other resins significantly more expensive

17. Why CIPP Affects the Economy? • CIPP Industry employs thousands: • Installation Contractors • Resin suppliers • Coating suppliers • Fabric suppliers • Equipment suppliers • Tool suppliers • Engineering Companies • Cleaning companies • 3rd Party Testing Companies • Approximately 15 million linear feet installed per year

18. Cost Impact of CIPP? • While many other commodities have risen in cost to the consumer over the last 20 years the cost of reconstructing an underground pipeline using the CIPP technology has dropped significantly

19. Conclusion Proven Trenchless Technology is saving the U.S Billions