AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Copyright © 2014 American Water Works Association
2014 Webinar Sponsors
2
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Webinar Moderator
No ImageAvailable
3
Randy Moore
Vice President Market Development
Utility Service Group
Randy Moore has been with Utility Service Group (USG) since 1998 and is currently Vice President of Market Development. Randy travels nationwide to promote USG’s line of integrated sustainable products and services for potable water distribution systems. He is also responsible for identifying and developing new technologies and innovation for USG. Randy has more than (35) years of experience in industrial sales and marketing. In addition, he serves on several AWWA Committees and Councils: the AWWA D102 Revision Task Force (as a voting member), the Distribution System Water Quality Committee, the Distribution System Operations & Maintenance Committee, the Steel Tank Committee, the Manufacturers & Associates Council (MAC), and as the MAC liaison to the Technical & Educational Council.
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Webinar Survey
• Immediately upon closing the webinar
Survey window opens
Thank you
5
Products or Services
The mention of specific products or services in this webinar does not represent AWWA
endorsement
AWWA does not endorse or approve products or services
6
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Panel of Experts
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Mark JohnsonDirector, Metropolitan Water Operations and Maintenance
Massachusetts Water Resources Authority
Todd BrewerAssistant Manager -
LaboratoriesCity Utilities of Springfield, MO
Andrew HillProject Manager
Confluence Engineering
Agenda
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I. Case Study on Asset Management and Impact on Water Quality
II. Distribution System Optimization & Water Quality Management Efforts at City Utilities
III. Main Cleaning – a Tool for Distribution System Water Quality and Asset Management
Mark Johnson
Todd Brewer
Andrew Hill
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Subject Overview
• What does it really mean to say “water quality management and asset management working together”?
• What would an example look like in a distribution system?
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For Example…
• Water Storage Tanks
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
Tank Asset Mgt conditions maintained in an effective tank asset management program:
1. Safety Conditions2. Sanitary Conditions*3. Security Conditions*4. Structural Conditions5. Coatings Conditions*
* Directly impacts water quality
11
Asset Mgt. = WQ Mgt.
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Vent Maintenance
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
13Roof Penetrations
Asset Mgt. = WQ Mgt.
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Roof Hatch
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
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Water Quality Impact
Asset Mgt. = WQ Mgt.
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Water Quality Impact
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
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Interior Coatings Maintenance
Asset Mgt. = WQ Mgt.
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Water Quality Impact
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
19Lack of Tank Mixing
Water Quality Impact
Asset Mgt. = WQ Mgt.
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Sediment Removal
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Asset Mgt. = WQ Mgt.
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Sediment Removal
Asset Mgt. = WQ Mgt.
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Sediment Removal
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Asset Mgt. = WQ Mgt.
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Poll Question #1
Have you ever experienced asset management impacting water quality management within your distribution system?
a) Yes
b) No
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Enter your question into the question pane at the lower right hand side of the screen.
Please include your name and specify to whom you are addressing the question.
Ask the Experts
2525
Mark Johnson Todd Brewer Andrew Hill
Mark JohnsonDirector, Metropolitan Water Operations
and MaintenanceMassachusetts Water Resources Authority
Case Study on Asset Management and Impact on Water Quality
26
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Poll Question #2
What percentage of your maintenance time is able to be devoted to valve exercising?
a) 50%
b) 25%
c) 20%
d) 10%
e) 0%
27
Key Presentation Points
• MWRA Background
• MWRA Master Plan and CIP Development
• Twenty Years Worth of Planning and Effort
• Links Between Asset Management and Water Quality
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Learning Objectives
• Value of Planning and CIP Development
• Follow Through
• Combination of Resources to Achieve the Goals
• Continuous Improvement Process
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MWRA Background
• Created in 1985
• Wholesale Water and Wastewater
• 60 Communities, including Boston
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Water System
• Average Annual Daily Delivery of 200 MGD (2104)
• Multiple Service Areas
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MWRA Metropolitan System
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Metropolitan System Assets
• 300 Miles of Large Diameter Transmission Main
• 5000 Valves
• Customer Communities Have 6600 Miles of Main
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Initial Challenges
• Predecessor Agency Lacked Funding
• Valve Operability at 50%
• Miles of Unlined Pipe
• High Unaccounted for Water
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Presentation Focus
• Valve Exercising
• Pipeline Rehab
• Other Topics and Solutions To Be Covered
35
Work Begins in Earnest
• Master Planning and CIP Development for All Assets
• Pipeline Improvements
• Valve Exercising and Replacement
• Leak Detection and Repair
• Water Conservation Efforts
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Challenges Were Many
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Why the Valve Exercising Focus?
• Wholesale Water Supplier
• Need to Maintain Service to Communities
• Need an Operable System
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Valve Exercising in the Early Years
• Sent Letters and Notified Communities
• Tendency to Create Discolored Water
– Initial Valve Operations
– Flow Reversals, both MWRA and Communities
• Called Communities Before and After
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Link Between Valve Ops, Pipe Condition, and Water Quality
• Operate Valves
• Pipeline Conditions
• Stir Up Sediment
• Disturb Internal Dynamics
• Water Quality = ?
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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1995
• Planning, Engineering, Construction, Operations Teamwork
• In-House Resources
– Valve Exercising and Replacement
– Leak/Break Repair
– Leak Detection
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10 Years Ago (2004)
• Well On Master Plan Path
• Valve Operability up to 80% to 85%
• Pipeline Rehab Program Underway
• Complaints Drop by 1/3
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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2014
• Master Planning and CIP Continue
• Majority of Relining and Replacement Complete
• Focus on Redundancy
• Valve Operability at 95%
• Complaints Due to Exercising Essentially 0
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Measure What You Manage
• Track Statistics
• Operability
• Replacement
• Set Goals
• “Yellow Notebook”
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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How?
• Combo of All Groups
• In-House Efforts
• Commitment to Programs and Funding at All Levels
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Available Resources
• M44 Manual, Distribution Valves
– Selection, Installation, Field Testing, and Maintenance
• G200-09 Standard, Distribution Systems Operation and Management
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Summary
• Develop the Plans for Your System
• Constant Struggles for Funding Distribution - Where Do You Spend?
• Follow Through
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Water Quality is Number 1
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Enter your question into the question pane at the lower right hand side of the screen.
Please include your name and specify to whom you are addressing the question.
Ask the Experts
4949
Mark Johnson Todd Brewer Andrew Hill
Todd Brewer, PhD, PEAssistant Manager - LaboratoriesCity Utilities of Springfield, MO
Distribution System Optimization & Water Quality Management Efforts at City Utilities
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AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Poll Question #3
Does your utility have an active (scheduled) tank cleaning, inspection, and maintenance program?
a) Yes
b) No
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Agenda• City Utilities System Overview
• Partnership for Safe Water (AWWA)– Treatment
– Distribution Optimization Program
• PSW - System Integrity Components– Key data elements
– Self-Assessment
• Water Quality Mgmt Case Study– Airport Area Chlorine Residual
– Options Considered
– Options attempted
– Results
• Summary – Asset Mgmt in Support of WQ Mgmt
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Learning Goals
• PSW – Distribution Optimization Program basics
• Asset Mgmt beneficial to WQ/public health
– Specific case study results
• Utilize resources to perform self-assessment
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Water Treatment @ City Utilities
• Approximately 80,000 customers (accounts)
– Roughly 160,000-180,000
• Two WTPs:
– Fulbright • 20.5 MGD conventional
– Blackman WTP• 52.5 MGD conventional
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Partnership for Safe Water: Treatment
• CU member since mid-90s
– Director’s Certificate for 15 years in June 2014
– Achievement of WQ goals above and beyond regulatory requirements
• Plant Effluent Turbidities <0.1 NTU
– More than low effluent turbidities • Optimization of each barrier to further prevent introduction of
pathogens to distribution system
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EPA Increasing Focus on Distribution Systems
$1 trillion – 1.5 trillion??over the next 20 - 25 years
nationwide
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• ≈ 1,200+ Miles of Water Main
• ≈ 7,700+ Fire Hydrants
• ≈ 32,000 valves
• Max Day = 59.4 MGD
• Average Day Usage ≈ 30-32 MGD historically…
CU - Distribution System
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Distribution System
• 1 ¼” up to 48”
• PVC, Cast Iron, Ductile (≈ 94%)
• AC, Concrete, Steel, HDPE (≈ 5-6%)
• ≈ 28 miles >100 years old (2.0-2.5%)
• ≈ 210+ miles 50-100 years old (17-18%)
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Distribution System Focus –Regulatory Impact
• Revised Total Coliform Rule
– Also known as “The Distribution System Rule”
• Stage 2 Disinfection By-Products Rule
– Distribution system monitoring, regulatory oversight on system operation as it relates to water age, disinfectant residual
• Lead Reduction Act
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Revised TCR – Select White Papers
– Greater Emphasis on Public Health Risk from Distribution System
• New or Repaired Water Mains
• Finished Water Storage Facilities
• Deteriorating Buried Infrastructure
• Effects of Water Age on Distribution Water Quality
• Intrusion from Pressure Transients
• Health Risks from Biofilm and Microbial Growth in Distribution Systems
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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PSW – Distribution Optimization
• Four Phases:
– Commitment
– Baseline & Annual Data Collection
– Self-Assessment• Data compilation
– Implement steps to achieve Optimized Performance
• Basis of program from WRF project #4109 Criteria for Optimized Distribution Systems– Additional input from many PSW utilities on self-assessment guide
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Distribution Optimization
• Critical Integrity Components (performance indicators):
– Water Quality (disinfectant residual)
– Hydraulic (positive pressure)
– Physical (main break frequency reduction)
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(Some) Key Data Elements
• Water Quality– Disinfectant residual data from TCR and other sampling sites
– Bacteriological Data
– Flushing information relative to low disinfectant residuals
• Physical Integrity– Main break frequency
– Pipeline renewal and replacement rate
– Asset Inventory
– Valve & Hydrant Exercise/Inspection records
– Hydrant repair records
• Hydraulic – Pressure Readings for minimum of 12 months
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Airport Loop Case Study: Distribution Operation & Water
Quality Impacts
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CU Water - Approximate Service Area
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Disinfectant Residual Monitoring
• 50 TCR sites monitored weekly– Cross-section of town EACH
WEEK
– One positive total coliform sample in 2012 (2000+ samples)
– Zero Positives in 2011
– Disinfectant residual monitoring at each site
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Airport Area Residual• Several Options considered:
– Routine flushing
– Disinfect mains near airport
– Pigging
– Booster chlorination
• Actions Taken:– Seasonally increase chlorine residual
– Routine flushing
– Increased WQ Monitoring
– Minimize water age (booster pump)• Trial basis to test/permanent solution installed
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HPC Monitoring
0
10
20
30
40
50
60
70
80
90
100
110
0.5 0.7 0.9 1.1 1.3 1.5 1.7
CF
U/m
L
Total Chlorine (ppm)
TCR Sample Sites
0
10
20
30
40
50
60
70
80
90
100
110
0 0.2 0.4 0.6 0.8 1 1.2
CF
U/m
L
Total Chlorine (ppm)
Dead End/Flushing Locations
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Summary :PSW Distribution Optimization &
Related Efforts• WQ preservation key factor in distribution operation decisions
• Self-Assessment process critical component in implementing effective optimization strategies– Team comprised of cross-section of utility
– Data integration plan? Effective use of collected data?
• Asset Management programs not only prolong life of asset and control costs, but impact water quality in a positive fashion
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PSW - Physical Integrity
• Main Renewal/Replacement Program√ Adjusted to (closer to) a 100 year cycle
• New Main Disinfection Practices√ Revision of disinfection specifications (more closely aligned with AWWA C651)
√ Sample every 600 ft (instead of 1200)
• Hydrant Repair records
• Valve and Hydrant exercise/inspection records
• Main Break Frequency
– Repair procedures
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Additional Resources
• AWWA
– Standard G200 (Dist System Operation & Mgmt)
– Manuals of Water Supply Practice
• PSW – Distribution Optimization Program
• WRF Projects/Reports (#4109 and others)
• State Guidance/Standards
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Enter your question into the question pane at the lower right hand side of the screen.
Please include your name and specify to whom you are addressing the question.
Ask the Experts
7979
Mark Johnson Todd Brewer Andrew Hill
Andrew Hill, PEProject Manager
Confluence Engineering Group LLC
Main Cleaning – a Tool for DistributionSystem Water Quality and Asset
Management
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How would you describe your utility’s program for water main cleaning?
a) Structured, preventative
b) Structured, reactive
c) Reactive “quick-fix”
d) Do not conduct mains cleaning
Poll Question #4
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Why bother with main cleaning?
What are the general cleaning options?
How to select the optimal technique for a particular application?– Utility experiences and on-going research
Presentation Agenda
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Why Clean Mains?
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The big picture:Best practice for distribution system asset management
Level of Service
Life Cycle Costs
maintain/restore water quality
achieve regulatory compliance
maintain customer satisfaction
extend asset useful life
sustainable resource use
reduce operating costs(chemical, energy, etc.)
• Enforced system inspection
• Updated maps
• Opportunity to “operate” hydrants, valves
• Concurrently develop useful hydraulic data
Other Asset Management Benefits
84
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• Exerts a chlorine residual demand
• Supports biofilm and harbors microbes
• Substrate for trace metal accum/release
• Aesthetic upsets/complaints (colored water, T&O)
Water Quality Impacts of Accumulated Deposits
85
Thedistributionsystemasareactor
Source:Hilletal(2010)
General Cleaning Techniques
86
Bu
lk W
ate
rL
oo
se
Dep
osit
sC
oh
esiv
e
Dep
osit
s
Ad
here
d
Dep
osit
s a
nd
H
ard
Scale
Technique
Ob
jec
tiv
e
Co
nv
en
tio
na
l F
lus
hin
g UD
F
Ice
Pig
gin
g
Sw
ab
bin
g
Pig
gin
g/M
ech
an
ical
Sc
rap
ing
Source:ConfluenceEngineeringGroupLLC
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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• Use key technical factors … not costs– Type/condition of pipe– Type of deposit present– Local constraints
• Pipe diameter
• Water disposal
• Infrastructure
• Consequences of using the wrong technique
Selecting the Optimal Technique
87
Source:ConfluenceEngineeringGroupLLC
UnidirectionalFlushing (UDF)
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Pros and Cons of UDF
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Role of Flushing Velocity
• Flush velocity is a controllable variable– Determines scouring force
– Typically determined with pitot pressure gauge
– Typical range is 2 – 8 fps
• Optimal velocity is site-specific– Depends on deposit and pipe conditions
– Use step-velocity test and monitoring
• Consequences of sub-optimal velocities
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When Velocity is Too Low…
91
All system-specific water quality issues should be monitored to determine optimal flushing velocity.
Source:ConfluenceEngineeringGroupLLC
When Velocity is Too High…
92
The application of flush velocities that dislodge tubercles from unlined iron
pipe can cause scale destabilization and
colored water issues.
Source:ConfluenceEngineeringGroupLLC
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Ice Pigging
93
• An ice pig is a semi-solid material (slurry) that can be pumped like a liquid …
• But behaves like a solidonce the pig is formed in the pipe
How Does Ice Pigging Work?
94
Source:ConfluenceEngineeringGroup,LLC
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Ice Pigging Equipment
95
IceProductionSystem
10-TonDeliveryRig
Source:Agbar Environment/UtilityServicesGroup
ProcessAnalyzer
Pros and Cons of Ice Pigging
96
• Effective on cohesive deposits and films
• Safe for tuberculated pipes
• Can pump through hydrant ports
• Can navigate changes in diameter, bends, and valves
• Requires third-party vendor support
• High TDS/TSS discharge may present disposal challenges
• Rate-of-cleaning (miles/day) may be limited by ice quantities
Advantages Limitations
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Ice Pigging of Unlined Cast Iron
97
Source:ConfluenceEngineeringGroup,LLC
Ice Pigging of Unlined Cast Iron
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ParameterPounds
removedPoundsPer mile
% ofTotal
TSS 67 177 100%
Iron 23 60 34%
Aluminum 1.1 2.8 1.6%
Manganese 0.4 1.1 0.6%
Cleanedalloverandaroundthetubercles,butlefttheminplace
Source:Confluence
EngineeringGroupLLC
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Foam Swabbing
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Pros and Cons of Swabbing
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• Effective on cohesive deposits, slime, and biofilm
• Does not require outside vendor support
• Can clean long sections at once (economies-of-scale)
• No diameter restrictions
• Launch and retrieval requires hydrant gutting ( 12” mains) or dedicated stations
• Not suitable for tuberculated iron pipe
• Risk of swab getting stuck
• High TSS discharge may present disposal challenges
Advantages Limitations
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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Current Research on Cleaning Performance
101
• WaterRF #4509: Metals Accumulation and Release within the Distribution System: Evaluation of Mechanisms and Mitigation
• Tailored Collaboration
– Park City Municipal Corporation, Utah
– Confluence Engineering Group LLC
– Utah State University
• Final Report expected spring 2015
Pipe and Deposit Conditions
• Plastic and cement-lined pipe
• Thin, slimy films with cohesive “sludge”
– Legacy Fe/Mn
– Co-precipitated trace metals
– Biofilm
102
Source:ParkCityMunicipalCorporation
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Conduct full-scale main cleaning demonstrations- UDF at 3 fps and 6 fps- Ice Pigging- Foam Swabbing
Evaluation of Cleaning Performance
103
Develop guidance on effectiveness and costs of main cleaning techniques for removal of legacy
deposits and contaminants
Task Objective
Task Approach
Visual Comparison of Performance
104
Flushing at 6 fps
Foam Swabbing
Ice Pigging
Source:ConfluenceEngineeringGroupLLC
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Deposit Mass Removed
105
0
200
400
600
800
1000
UDF Ice Pig Swab UDF Ice Pig Swab
Tota
l Sol
ids
Rem
oved
(mg/
ft2)
AST Site UPA Site
4% 7% 12%7%
59%56%
95%88%
3 fps 6 fps 1 run 2 runsFor UDF: For Swab:
Disclaimer: data are draft/preliminary!
Source:ConfluenceEngineeringGroupLLC
Mains Cleaning =Water Quality and Asset Management
• Improved Tap Water Quality
• Improved System Condition
• Reduced Life-Cycle Costs
• Optimize where, when, how, and how often for maximum benefit
– Data collection and management
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Additional Information
107
AwwaRF #2606 Establishing Site-Specific Flushing
Velocities
AwwaRF #90938 Investigation of Pipe Cleaning
Methods
WaterRF #4509
Metals Accum/Release: Evaluation of Mechanisms
and Mitigation
AWWA M28 Manual of Practice
Enter your question into the question pane at the lower right hand side of the screen.
Please include your name and specify to whom you are addressing the question.
Ask the Experts
108
Mark Johnson Todd Brewer Andrew Hill
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Bookstore Resources
109
M44 Distribution Valves: Selection, Installation, Field Testing, and Maintenance, Second Edition
No. 30044
M42 Steel Water Storage Tanks, Revised Edition
No. 30042
M56 Nitrification Prevention and Control in Drinking Water, Second
EditionNo. 30056
M17 Installation, Field Testing, and Maintenance of Fire Hydrants,
Fourth EditionNo. 30017
AWWA G200-09 Distribution Systems Operation and Management
No. 47200
Additional Resources
110
Join the Partnership for Safe Water’s Distribution System
Optimization Program. Information available at
www.awwa.org/partnership
The self-assessment process incorporates water quality, asset
management, and many additional components of
distribution system operation.
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Upcoming Webinars
October 8 – New Developments in Managing Disinfection By-Products
November 12 – Measuring and Addressing Water/Wastewater Bills Affordability
Register today!
www.awwa.org/webinars
111
Upcoming Specialty Conference
Register Online at:
www.awwa.org/conferences
112
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Thank You for Joining AWWA’s Webinar
• As part of your registration, you are entitled to an additional 30-day archive access of today’s program.
• Until next time, keep the water safe and secure.
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Presenter Biography Information
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Mark H. Johnson, PE, has been with the Massachusetts Water Resources Authority (MWRA) since 1989 and is currently Director of Metropolitan Water Operations and Maintenance. Mark has over 35 years of experience in design, construction, and operations. The MWRA Metropolitan water system has 11 finished water storage tanks, with volumes ranging from 2 to 20 million gallons. The balance of the system has 300 miles of large diameter transmission mains, 11 pump stations, and 5000 valves.Mark is a registered professional engineer in Massachusetts and Maine, and is a licensed Grade 4D Drinking Water Operator in Massachusetts. He is an active member of the New England Waterworks Association (NEWWA) Distribution and Storage committee, having recently served three years as chairman. Mark is a presenter for several operator training classes at NEWWA including portions of the class for Water Storage Tank Operations and Maintenance.
Todd Brewer currently serves as the Water Quality Lab Manager for City Utilities in Springfield, Missouri, with responsibility over both the Laboratory and Water Measurement work groups. He has nearly twenty years of utility experience in water quality monitoring, treatment and distribution. Todd has a Bachelor's in Chemistry to go along with a doctoral degree in Environmental Engineering and is a registered Professional Engineer.
Andrew Hill is a PE with Confluence Engineering Group in Seattle, Washington. He brings over 14 years of consulting engineering experience in the drinking water industry, with focus on treatment process selection, distribution system water quality optimization, and development of best practices for maintaining water quality. Andrew has served as co-principal investigator on several utility investigations and research projects aimed at improving the industry’s understanding of distribution system impacts on tap water quality, evaluating emerging issues such as trace inorganics accumulation and release from pipe deposits, and developing utility guidance related to mains cleaning strategies.
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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CE Credits (CEUs) and Professional Development Hours (PDHs)
AWWA awards webinar attendees CEUs. If you wish to take advantage of the
opportunity to earn CEUs, visit www.awwa.org/credits
Certificates will be available within 30 days of the webinar
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Within 30 days of the webinar, login to www.awwa.org or register on the website. If you are having problems, please
email [email protected].
Once logged in, go to:• My Account• My Transcript InformationTo print your official transcript, click Print listTo print certificates, click Download certificate
How To Print Your CEU Certificate of Completion
AWWA Webinar Program: Distribution System Issues Part 2 of 3: Water Quality and Asset Management Working TogetherWednesday, September 24, 2014
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2014 Webinar Sponsors
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