© 2016 HDR, Inc., all rights reserved.

Content, perspectives, key underlying principles

INTRODUCTION TO AWWA MANUAL M77

No Manholes Contamination and

other Water Quality Concerns Disruption of Service Inspection Riskso Might trigger a pipe breako Tool could get stuck or lost

No Perfect Method Results Can be Hard to Interpret Cost

WATER MAIN ASSESSMENT IS (A LITTLE) DIFFICULT

The Mission of the Water Main Condition Assessment Committee:“Assemble and disseminate reliable information

related to condition assessment of water infrastructure”

CONTRIBUTORSHall Sylvia SH EngineeringHannaford Margaret San Francisco, CityHardjadinata Ray LADWPHassel Meang MWDSCHernandez Riccardo MWDSCHoyt Phil ConsultantHughes Dave American WaterHyer Celine ArcadisIyer Shiv EMAJackson Rod CH2M HillJohnston Dave EchologicsKnight Mark Waterloo U.Kosman David RS TechnikKraft Peter Confluence GpKroon David AegionKrywyj Danny JD7Laven Kevin EchologicsLeighton Jeff Portland, CityLine Joanna Calgary, CityLivingston Bryon Black & VeatchMacey Chris AECOMMallakis George TT TechnologiesMarciszewski John EchologicsMatthews John Pure TechnologiesMcDonald Bethany HDRMcNealy Ashan Pure TechnologiesMcReynolds Mike MWDSCMoore Randy Pure TechnologiesMorgan Ken ConsultantMunoz David Gilbert, City

Najafi MohammaTexas, U.Nardini Peter SGHNgo Charles LADWPOjdrovic Rasko SGHPeloquin Michael Tacoma, CityPhannavong Noy V&APousard Richard HDRQuill Brian Gilbert, CityRaven Annie Infra PlanRayer Curt San Jose, CityRoberts Tonya Olathe, CityRomer Andy AECOMRoubal Martin Rock SolidRussell Dave PICASalvo Piero GAMESarkissian Maral LADWPSharkey Carl Pure TechnologiesShultz Matthew HDRSimon Steve Aurora, CitySlaven Kevin ArcadisSpencer David HDRStroebele Allison Pure TechnologiesTurner Jon Phoenix CivilVan Der Walt Gert DC WaterVause Kurt Anchorage, CityWagner Travis Pure TechnologiesWise Jonathan FyfecoYounis Rizwan Waterloo U.Zhang Jian WRFZhang Yaofu Russell Corrosion

LAST FIRST OrgAbey John Philadelphia, CityAmbler Allan AM TrenchlessArnold Scott FyfecoBach Sue AWWABell Graham HDRBlaha Frank WRFBontus George AegionBracken Marc EchologicsBrander Roy Calgary, City (retired)Bries David MontroseBrowning Keith Orlando UtilitiesCarroll Joanne RS TechnikConner david AECOMCorrao Andi Infrastructure MDCrabtree Dan AegionDeLaTorre-Evans Tracy Seattle PUEggen James Joliet, CityEmbry Kris Hibbard InshoreFaber Nathan San Diego, CountyFlancher Dawn AWWAGarrett Chris PICAGaughan Matt AECOMGiddings Jeff HDRGilles Duane Evanston, CityGrahek Mike LADWPGresehover Brian Pure TechnologiesHabibian Ahmad CDM Smith

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

1. Jeff Leighton, retired Portland Water Bureau. The Benefits of Condition Assessment for Water Mains

2. Kurt Vause, retired Anchorage Water and Wastewater Authority, now SteamlineAM. Building Support for a Condition Assessment Program

3. Dan Ellison, HDR. Planning a Condition Assessment Project or Program4. Celine Hyer, Arcadis. Desktop Condition Assessment5. Jeff Giddings, HDR. Soil Corrosivity Surveys6. Mersedeh Akhoodan, HDR. Spot Assessments7. Ahmad Habibian, CDM-Smith. Leak Detection8. Andi Corrao, Infrastructure MD. Internal Robotic Visual Inspection

CHAPTER LEADERS

9. Derek Wurst, Black and Veatch. Physical -Entry Inspections10. Frank Blaha, Water Research Foundation. Acoustic Velocity Testing11. Ricardo Hernandez, Metropolitan Water District. Electromagnetic Testing12. Chris Macey, AECOM. Magnetic Flux Leakage Testing13. Bethany McDonald, now Black & Veatch. Condition Assessment of PCCP14. Andy Romer, AECOM. Hydrostatic Pressure Testing of Existing Mains15. Dan Ellison, HDR. Strategies for Economical Assessments of Low-Value Pipes.16. Nathan Faber, San Diego County Water Authority. The Next Steps: Using Condition

Assessment Information

CHAPTER LEADERS

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

Please don’t dig Please don’t put something in the pipe Please don’t interrupt operations Please don’t disrupt community activities Make it very, very, very cheap …and also please tell us about every defect

HOW TO DO CONDITION ASSESSMENT?

Photo by Bettmann/Corbis

Type of Pipe Types of Defects Pipe Access Size of Pipe System Operations Value of Pipe Consequences of Failure Cost of Assessment Protection of Health Potential Water Discoloration Risk Tolerance Available Data Available Technologies Permits / Traffic

FACTORS TO CONSIDERSAFETY = #1

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

What is the life expectancy of a pipe?

» Unlike a person, the death of a pipe is not a definitive event» Unlike a person, a pipe is not a definitive thing

» A pipe lasts until someone decides to replace it» Decisions may be rational, objective, based on data…or not

Good Reasons to Replace a Pipe:1. Repairs get too costly2. Service is substandard3. Infrastructure stewardship

AGE IS A POOR PREDICTOR OF PIPE CONDITION

» Yes, pipe failures increase with age» No, pipe lives are not found in a book…

Life Expectancies Depend on Economics and Levels of Service

Life expectancies are highly localized and highly variable – and MAY SURPRISE YOU

Pipe Type / Location Mean Life Expectancies

AC Pipe – Anchorage

Bas

ed o

n S

tatis

tical

Ana

lyse

s

125 to 170 years

Old Cast Iron – Anchorage 75 to 150 years

Cast Iron – Eugene 130 to 200 years

Cast Iron – Portland > 200 years

All pipes – Boulder 150 to 200 years

Most pipes – Seattle >200 years

Old AC – SF Bay Area 90 to 100 years

Newer AC – SF Bay Area 175 to 185 years

Cast Iron – Western US 60 to 100 years*

* Per “Buried No Longer”

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

WHY PCCP DESERVES ITS OWN CHAPTER

Photo: Bill O’Leary, Washington Post

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

THE CASE FOR PRESSURE TESTING

Table of Contents 1. The Benefits of Condition Assessment for Water Mains 2. Building Support for a Condition Assessment Program 3. Planning a Condition Assessment Project or Program 4. Desk-top Condition Assessment 5. Soil Corrosivity Surveys 6. Spot Assessments 7. Leak Detection 8. Internal Robotic Visual Inspection 9. Physical -Entry Inspections 10. Acoustic Velocity Testing 11. Electromagnetic Testing 12. Magnetic Flux Leakage Testing 13. Condition Assessment of Prestressed Concrete Cylinder Pipe 14. Hydrostatic (Pressure) Testing of Existing Pipes 15. Strategies for Economical Assessments of Low-Value Pipes 16. The Next Steps: Using Condition Assessment Information

Appendix A – Other Assessment Methods

How to Use Remote Field NDE Effectively on Water Mains

» Access: Scan 6”/8” mains thru hydrants

» Target: Mains likely to be most corroded

» Sample: Various vintages in various areas

» Leverage: Extrapolate information to mains of similar vintage and area (siblings)

Project 4473: Assess and Fix» Perform NDE with rehab» Tailor rehab using NDE

28

WRF REPORT 4471

• How can NDE be used cost economically?

• What methods work (and don’t)?

• Can NDE predict pipe failure?

• Can NDE save $$$$?

You too can Do What Calgary Did!

© 2016 HDR, Inc., all rights reserved.

Dan.Ellison@HDRinc.com213.200.5152

QUESTIONS?