North Texas Municipal Water District“Regional Service Through Unity …
Meeting Our Region’s Needs Today and Tomorrow”
Water Partnering Meeting9:30 am
June 15, 2016
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
Reservoir Elevations – June 14, 2016
Reservoir
Conservation Pool
Elevation Current Elevation Up/Down % Full
Lavon30%
492.0’ 497.04’ +5.04’ >100%
Chapman15%
440.0’ 441.10’ +1.10’ >100%
Tawakoni8%
437.5’ 439.23’ +1.73’ >100%
Texoma28%
617.0’ 622.07’ +5.07’ >100%
Water Consumption
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
MSPS Permitting
• Regional General Permit 12 (USACE 404 & 408 Permits):
– Received February 2016
• TCEQ Water Rights:
– Draft permit noticed to downstream water right holders
– Response deadline: June 24, 2016
• TCEQ Bed & Banks:
– Draft permit written: requires water right amendment
MSPS Permitting
• Project Advancement:
– Construction and procurement delay undetermined
– NTMWD continues to work on securing property rights for Main Stem Water in East Fork Raw Water Supply Project (Wetland)
LBCR Permitting
LBCR Clean Water Act 404 Permitting History
• June 2008: Filed permit application with USACE
• June 2015: Received comments from EPA on the Draft EIS
– EPA rated Draft EIS as “Inadequate”
• December 2015: USACE’s initial schedule for issuing 404
• December 2017 - June 2018: Current Schedule for USACE to issue 404
LBCR Permitting
HR 4466
• Possible Inclusion in:
• WRDA
• Continuing Resolution
• Omnibus Bill
• Passage Required in 2016
Water Demand & Supply
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
Tools to Enhance Water Quality
NORTH TEXAS MUNICIPAL WATER DISTRICT
June 15th, 2016
13
Factors Influencing Water Quality
• Required water conservation increases water age resulting in:– Decreased chlorine
residual– Higher disinfection by-
products
• Aging pipeline infrastructure resulting in:– Increased chlorine demand– Habitat for bacterial
regrowth
14
Factors Influencing Water Quality
• Warm ambient temperatures resulting in:– Thermal stratification in tanks– Accelerated chlorine decay
• Late summer and fall nitrification when water usage
diminishes and water temperature remains high
• Rapid growth resulting in oversized facilities
15
1) Water Quality Monitoring through SCADA
2) Source Trace Modeling
3) Water Age Modeling
4) Uni-Directional Flushing Programs
5) Replacement of Aging Infrastructure
6) Booster Chlorination Station
7) Enhanced Sampling Programs
8) Spatial Data Trending
9) Tank Cycling and Mixing Systems
10) THM Reduction Evaluation
16
Available Tools to Enhance Water Quality
Uni-directional Flushing (UDF) Program
Definition: an engineered program to systematically clean the distribution system lines with high velocity flushing thereby improving water quality and reducing unbilled water usage.
17
Why UDF vs. Conventional Flushing?
• UDF cleans water lines (longer term solution) while conventional flushing simply displaces bad water with good water (temporary fix)
• UDF uses less water– Assists with City’s water conservation efforts
– Reduced man-hours
• UDF allows for simultaneous preventive maintenance activities such as valve/hydrant exercise
• UDF provides a set time frame for crew assignment
18
Leverage Multiple Data Sources
UDF
Program
GIS Data
Maintenance
Management
Data
Hydraulic
Model
Results
19
Define
Flushing
Area
Tracking System
Performance
Going Forward
QC and
Finalizing
Flushing
Procedures
Public
Notification
Review and
Analyze Water
System
Operation
Develop
UDF Map
Books
Implementation
of UDF
Program in the
Field
UDF Development Process
20
Phased Approach to a UDF Program
• First Pilot Area: SH 1 (2003)
• Phase 2: RR (2005)
• Phase 3: TV 1 - 2 (2008)
• Phase 4: TV 3 - 4 (2010)
• Phase 5: TV 5 – 7 (2014)
21
Define Flushing Area
• Review Water Quality Reports
• Review Customer Complaint Records
• Analyze Flushing History
• Use Hydraulic Model to Determine Long Detention Times
22
• Analyze detention times– Flush until the Cl2 residual is at least 1 mg/l and a minimum two times
the pipe volume has been displaced and the flushed water appears clear
• Define system operation – Organize flush groups and sequences starting from the water source– Flush from larger to smaller diameters
• Confirm adequate flushing velocities– Maintain velocities of at least 5 fps to scour distribution lines and
remove sediments/biofilm
Analyze System Operation using Water Model
23
Defining UDF Procedures
• Flush Groups and Flush Sequences
– Breaks down the overall system within the flush area to
provide structure to the program
– A crew should be able to complete one flush group in a
work day
– 8-12 flush sequences per flush group
• Utilizing Water Model to Test Adequate Scouring
Velocities
24
Typical UDF Flush Group & Sequence in Map Book used by Operations
25
Typical UDF Flush Group & Sequence in Map Book used by Operations
Flush
Group
Flush
Sequence
Field Crew
Instructions
26
• Public notification before and during program
• Check valve and hydrant condition
• Execute the program while field checking physical data– Follow instructions on field maps
– Periodically check Cl2 levels
– Keep record of changes made to program due to discrepancies between field data and GIS data
• Follow up initial implementation
with QC before finalizing
program
Implementation of Procedures
27
• Use dechlorinating agents to neutralize the high
concentrations of Cl2 before the flushed water enters
the collection system
• Types of dechlorinating agents
– Absorbic Acid
– Sodium Sulfite
Dechlorination
28
• Notices sent to affected citizens a week before flushing
• Notice on City website with description of program benefits
• Hosemonster – protects landscape and cars
• Visible signs on flushing location
Public Notification
29
• Track residual and volume of water flushed to
determine whether UDF improved the system
Field Recorded Data
Tracking System Performance
• Assists in determining ways to improve the UDF program
• Determine how Program will be implemented in future– Seasonally
– When Cl2 residual drops to specific level 30
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
12/10/2002 3/20/2003 6/28/2003 10/6/2003 1/14/2004 4/23/2004 8/1/2004
Ch
lori
ne
Res
idu
al (
mg/
L) Desired Water Quality = 1 mg/L
UDF Program Implemented
UDF Provided Sustained Water Quality Improvement
Sustained High
Water Quality
After UDF Program
Is Implemented
Low Water Quality
Under Conventional
Flushing Program
31
Estimated Cost Savings from UDF Pilot Program
Annual Cost for current
flushing methods
Cost for UDF
Pilot Program
32
1) Water Quality Monitoring through SCADA
2) Source Trace Modeling
3) Water Age Modeling
4) Uni-Directional Flushing Programs
5) Replacement of Aging Infrastructure
6) Booster Chlorination Station
7) Enhanced Sampling Programs
8) Spatial Data Trending
9) Tank Cycling and Mixing Systems
10) THM Reduction Evaluation
33
Available Tools to Enhance Water Quality
34
Water Age Modeling
Where are my high risk areas?
35
Water Age Modeling
Current Operation Water Age Modified Operation Water Age
What is the impact of operational changes
on water age?
36
Tank Mixing Systems
• Can reduce stratification and preserve chlorine residual
• Passive mixing systems
• Active mixing systems
37
Tank Mixing Systems
Mixing systems with aeration have been shown
to substantially reduce DBPs
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
2017 State Water Plan Overview
• Adopted by TWDB on May 19, 2016
• Reflects 16 Regional Water Plans
• Adopted Every 5 Years
• State Water Planning Started in the 1950s (Response to the State Drought of Record)
• Current Process (Bottom-Up Regional Approach) Began in 1997
Regional Water Planning Areas
Population Projections
• Between 2020 and 2070, Texas’ Population Forecasted to Increase from 29.5M to 51M
• Over ½ of Growth to Occur in Region C (DFW) and Region H (Houston)
Population Projections
Population Projections
Water Needs Projections
• Total Demand Needs:
– 2020: 4.8M acre-feet
– 2070: 8.9M acre-feet
2070 Water Supply - Statewide
• Demand Management = Conservation + Drought Mgmt
• 30% of 2070 Water Supply from Demand Management
• 45% - Surface Water Sources
• 14% - Reuse
• 10% - Groundwater
• 1% - Seawater Desalination
Municipal Conservation & Reuse
• Current Municipal Gallons per Capita Goal = 140 gpcd
• 2017 State Water Plan Goals:
– 2020 – 163 gpcd
– 2070 – 124 gpcd
Previous Unique Reservoir Sites
Recommended Unique Reservoir Sites
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
WaterMyYard.org06/14/2016 05/17/2016
Allen 220 214
Farmersville 55 55
Forney 80 80
Garland 99 94
McKinney 698 688
Mesquite 285 285
Plano 1,454 1,383
Princeton 115 111
Richardson 386 330
Rockwall 176 168
Royse City 29 27
Wylie 319 316
Wetland 1 1
Tawakoni 1 1
121 RDF 1 Not avail.
WMY Total 3,919 3,753
WaterMyYard Subscribers – 3,919
Frisco WaterWise Subscribers – 16,023
NTMWD - WMY has 15 Weather Stations
12 Rain Gauge Systems
Customer SubscribersCash SUD - 1Melissa - 40Murphy – not yet avail.
Sachse - 51
Joining soon: Parker
Living Waters ProjectSierra Club, National Wildlife Federation,Galveston Bay Foundations
• Texas Living Waters Unveils First Ever Water Conservation Scorecard
• Wide disparity of effort, information among water utilities
Allen
Fairview
Frisco
Garland
Little Elm East
McKinney
Mesquite
Murphy
Plano
Richardson
Rockwall
Rowlett
Royse City
Sachse
The Colony
Wylie
NTMWD Entities Included in Scorecard
Water Resource & Public EducationTV
Water Resource & Public EducationPreRoll
Outreach T-shirts
Web Banners/Digital
STATIC
ANIMATEDGeo-Targeted for NTMWD service area
Billboards
Locations where an extension is not permitted, the hose will be removed.
Water4Otter ISD Summer Camp Outreach
• Wednesday, June 15
– Royce City ISD summer camp
• Other still getting scheduled
– Send in ISD contact if interested in Water4Otter presentation
Outreach Booth
WaterMyYard.org• Banners• Sign-up for WMY and WIQ pledge Journey of Water
• iPads: game
Give-Aways• T-shirts• Wheel barrel filled
w/ water efficient items
Signage forConquering the Journey of Water Picture
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
Public Relations Update
Key Projects• City Council
presentations on projects & rates
• Water Supply Contract Working Group meetings
– Next: June 29
• New website progressing
• Lower Bois d’ArcCreek Reservioroutreach
DRAFT new website homepage – July launch
Public Relations Update
• May 21: Town hall in Fannin County hosted by Sen. Bob Hall; Fannin County Leader article (May 31)
• June 7: Joined Rep. Johnson staff for briefing of Collin County Business Alliance on importance of new reservoir; NBC 5 TV story aired
• June 12: Dallas Morning Newssupportive editorial
• Additional letters from Board of Directors to USACE officials
• Sponsoring Fannin County H2O art exhibit, includes display with LBCR and water conservation materials
Nearly 100 people attended May 21 town hall in Bonham on Lower Bois
d’Arc Creek Reservoir
Lower Bois d’Arc Creek Reservoir
Public Relations Update
Other Recent Media• Plano Community Impact News: Conservation & LBCR
• Frisco Enterprise: on state’s “Clean, Drain, Dry” campaign (zebra mussels)
• Plano Star Local Media: Recent rainfall, water supply, rate projections
• TX AWWA blog: How NTMWD is Meeting the Demands of One of the Fastest-Growing Regions in the U.S.
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
JBS Wetland Center American Bald Eagles
Juvenile Eagles Branching
Juvenile Eagles Catching Air
Bald Eagle Family June 9, 2016
Agenda
I. Water Supply Update - Billy George
II. LBCR & Main Stem PS Permitting Update - Billy George
III. Unidirectional Flushing Presentation - Scott Cole
IV. Update on 2017 State Water - Billy George
V. Public Education Programs Update - Denise Hickey
VI. Public Relations Update - Janet Rummel
VII. Wetland Center Eagles Update - John DeFillipo
VIII. Upcoming Meetings - Billy George
RSVP through
Upcoming Meetings
www.NTMWD.com Follow us on: WED JUL 20 NTMWD
WED AUG 17 NTMWD
WED SEP 21 NTMWD
WED OCT 19 NTMWD
WED NOV 16 NTMWD
DEC (no meeting)
Meeting Time:9:30 a.m.
Water Partnering Meeting
Wastewater Partnering Meeting(immediately following last item in the
Water Partnering Meeting)
11:30 a.m.
Target Meeting End Time
at
NORTH TEXAS MUNICIPAL WATER DISTRICT
ENGINEERING BUILDING TRAINING ROOM
505 E. Brown Street, Wylie, TX 75098
North Texas Municipal Water District“Regional Service Through Unity …
Meeting our Region’s Needs Today and Tomorrow”
Wastewater Partnering MeetingJune 15, 2016
75
Agenda• Meeting Purpose
• SB 912 Rulemaking Adoption re Volume-Based Exemptions for Certain Accidental • TCEQ Form Update
• In the Trenches by Justin Diviney w/ City of Denton
• Discussion
76
77
Partnering Meeting Purpose
78
SB 912 Rulemaking Adoption re Volume-Based Exemptions for Certain Accidental
79
In the Trenches
CITY OF DENTON WASTEWATER COLLECTIONS
In The Trenches
Justin Diviney
Manager
Wastewater
Collections
81
Replacement Cost Over $400,000,000
2,756,000 linear feet
522 miles of mainline
sewer
OUR MISSION: Protect The Public Health & The Environment
By Reducing/Eliminating Unauthorized Discharges
• Asset Management
• Flushing Program
• Manhole Inspection
• CCTV/Quickcam
• Smoke Testing
• Point Repairs
• Open Cut Construction
• Pipe Bursting
• FROG Program
• Employee Buy In
A D M IN IS T R A T IVE
A S S IS T A N T I II
T . M ILL S O P
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Maintenance Construction Flushing
REACTIVE
• One flushing truck chased main chokes and service chokes 24/7
• Very little basin cleaning because of service calls
• Went from one emergency main or service repair to the next
• Little to no CCTV work done
• No real QC or investigation done on work orders
PROACTIVE
• CCTV 3 or more chokes on a main line or service line
• Documented defects and created work orders to repair defects
• Set performance goals for crews
• CCTV all main chokes and service chokes
• Documented defects and created work orders to repair main line
defects and complete replacement of services
• SCRAPS data for basin cleaning
• Set up QC measures for work orders
• Look for new and innovative ways to do our jobs
ASSET MANAGEMENT IMPLEMENTATION
• ESRI GIS
• Pipeworks/Cityworks CMMS
• Hydroworks/Infoworks Capacity Models
• WERF SCRAPS Prioritization Model
• CapPlan/Infomaster Asset Management Model
• Addition of IT/Database professional
• CMOM Program
• Operations staff buy in
CITYWORKS
• Every activity of the
Collections Department is
recorded as a work order in
Cityworks
• Cityworks is a great source of
historical data on sewer
system maintenance and
repair
• Changed from paper work
orders to digital - Field crews
have instant data at their
hands with the use of Ipads in
the field
INFOMASTER
• Identifies individual repairs
• Evaluates necessity of repairs: major or
minor?
• Compares repair cost versus full
replacement cost
• Suggests a rehab method
For every pipe!
WERF SCRAPS MODEL
• Using Probability & Consequence of Failure SCRAPS provides a
numerical ranking from 0 to 100 for each pipe segment. Highest
being worst.
• Using this ranking we set up the flushing program to areas most in
need of attention being cleaned more frequently
Flushing Program• 10 Year Lines - Combination Truck
• 5 Year Lines - Combination Truck
• 1 Year Lines - Combination Truck
• CCTV - Combination Truck
• Hot Shot Truck (Service Calls and Degrease Lines)
• Spare Combination Truck
Orange sub-basins have higher
average SCRAPS scores
Basin cleaning prioritization
Red segments have choke history
Add cityworks slide for flushing basins
Cityworks Map 10 Year Basin
0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
10/1/201511/1/201512/1/20151/1/20162/1/20163/1/20164/1/20165/1/20166/1/20167/1/20168/1/20169/1/2016
Basin Cleaning Performance
Pace 1 5 10
CITYWORKS NOTES
-
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
10/2/201511/2/201512/2/20151/2/20162/2/20163/2/20164/2/20165/2/20166/2/20167/2/20168/2/20169/2/2016
Degreasing Performance
Total Pace
Manhole Inspections
&
Rehab/Replace MH’s
• Inspect 800 per
year
• Repair
• Grout
• Replace
• Line
• Install Rain Dishes
• Fiberglass inserts
• Fiberglass mh’s
• Monolithic mh’s
CCTV
• One CCTV Unit
• Full PACP Coding
• Quick Lock Internal Point Repair
• CCTV lines that fail quick cam
• Accurately Locate Defects
WHY WE DECIDED TO USE QUICK CAM
• Cleaning Confirmation: Easily document that
cleaning was successful
• Pass/Fail Pipe Assessment: Quickly identifies
offsets, collapses, infiltration, cross bore, and any
other maintenance issue
• Cost Savings: Keep CCTV crew on-plan with the
ability to not waste time on good lines that do not
need full PACP review.
WHY WE DECIDED TO USE QUICK CAM
• Tool Selection: See whether a pipe is clogged
with gravel, grease, mud, roots or sludge, and pick
the best nozzle to quickly eliminate the problem.
• Safety: Confirm absence or presence of cross-
bore electrical, water or gas, and preview pipe
before mechanical root cutting or milling.
CCTV Defect
Locating Capabilities
CCTV VERSUS QUICK CAM
• CCTV conventional cost $0.83 per foot. (Average for a 3 yr.
period)
• Quick Cam Video cost $0.19 per foot.
• Compared with in-house CCTV, the City saved $181,674 for
283,866 feet of sewer line CCTV using Quick Cam.
-
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
10-Year Basin Cleaning with Quick Cam
Quick Cammed Missed Quick Cam Cleaned PaceFeet
-
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
10/1/201511/1/201512/1/20151/1/20162/1/20163/1/20164/1/20165/1/20166/1/20167/1/20168/1/20169/1/2016
5-Year Basin Cleaning with Quick Cam
Quick Cammed Missed Quick Cam Cleaned PaceFeet
Smoke Testing
• Smoke Test 10% of the system per year
• Catalog all defects in the database
• Provide binder with all defects noted to field crews for repair
and create individual work orders to repair defects
• Data suggest issues with c/o’s major problem in new
development and existing subdivisions
DEFECT 2008 2009 2010 2011 2012 2013 2014 TOTALS
MHSS 95 85 56 38 109 71 103 557
MAIN 25 41 2 3 5 3 11 90
PRIVATE 659 700 372 587 409 129 542 3398
TOTALS 779 826 430 628 523 203 656 4045
Smoke Testing
Public Education/Outreach
Pilot Project For Cleanout Cans
• Major I&I from rain in 2007 / Smoke tested
in the summer 2007 – repaired cleanouts in
the fall
• Spring of 2009 major I&I / Smoke tested in
the summer of 2009
• Installed 113 cleanout cans
• Next Rain event we saw about a 65%
reduction in I&I at the lift station
SEWER
STANDARD DETAILS WASTEWATER
UTILITY AND CIP
ENGINEERING
-
50
100
150
200
250
300
350
400
450
Cleanout Install Performance
Cleanout Install Cleanout Install Pace
Cleano
Point Repairs
3 – crews
• Point repairs, taps and service
replacements
• Manhole repair/replacements
• Smoke testing defects
CITYWORKS PENDING WORK
CCTV showed issues with point repairs
sinking because of old style rubber
adapters we currently use shearguards
WHY WE CHOSE QUICK LOCK
• Trenchless no-dig point repair
• Utility Locates are not required. No wait time.
• Permanent, reliable, and instant fix
• Can be installed with flow present
• No resins = no cure time or restricted time
frame to position sleeve
• Cost Savings = average of $800 per point
repair vs open cut
CCTV picture of fracture
allowing infiltration.
After Repair
0
20
40
60
80
100
120
140
Point Repair Performance
Open Cut Trenchless Total Point Repairs Point Repair Pace
City of Denton In-house Construction
2 – Crews
• Conventional Open Cut
Construction
• Pipe Bursting
• 16,000 feet Per Year Goal
• Utility Coordination?
-
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
Main Replace Performance
YORK, MICHAEL GARCIA, SETH Main Replace Pace
Feet
FOG Outreach and Enforcement
Program
Root Treatment
• Tree Canopy data used to
determine what lines to
chemically root treat
• Quick cam is now used to
notify of root issues and is
documented in Cityworks
• Now we have visual
confirmation of root issues
prior to chemical treatment
EMPLOYEE ENGAGEMENT & BUY IN
• Goals are transparent
• Goals are measurable
• All staff aware of the goals
• Regular meetings with staff
• Review progress
• Make adjustments
• Recognition –amplifies positive behaviors that drive results
Results will follow
0
150
300
450
600
0
50
100
150
200
250
300
350
400
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Sy
ste
m L
en
gth
(mile
s)
Ac
tiv
ity
Co
un
t
Main Chokes and Point Repairs
Main Choke Point Repair System Length
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
0
20
40
60
80
100
120
140
160
180
200
Repeat Main Chokes by Year
Total
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
0
100
200
300
400
500
600
700
800
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Cu
sto
me
r Co
un
tAc
tiv
ity
Co
un
t
Service Chokes and Service Replacements
Customer Problem Service Choke Service Replace Total Connections
0
20
40
60
80
100
120
140
Service Replace Performance
Service Replace Service Replace Pace
0
100
200
300
400
500
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Se
rvic
e C
ho
ke
s
Repeat Service Chokes by Year
Total
136
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