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Components of a Water System Master Plan. Chapter 1 – Existing System Chapter 2 – Demand Projections Chapter 3 – Hydraulic Model Chapter 4 – System Analysis Chapter 5 – Integration of JWS with Lake Oswego Chapter 6 – Recommended Project List for CIP and CMP. - PowerPoint PPT Presentation
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Tigard_WSP_0410
Components of a Water System Master Plan
1. Chapter 1 – Existing System2. Chapter 2 – Demand Projections3. Chapter 3 – Hydraulic Model4. Chapter 4 – System Analysis5. Chapter 5 – Integration of JWS with Lake Oswego6. Chapter 6 – Recommended Project List for CIP
and CMP
Planning period is for 20 years. Recommend updating every five years.
Tigard_WSP_0410
Chapter 1 – Existing System
Pipes - Type, Size, Location and AgePumps - Capacity, Location, Backup Power and AgeWells/ASR – Capacity, LocationReservoirs – Capacity, Location and Age
The service area is well-served by existing infrastructure with very few improvements
needed
Tigard_WSP_0410
Water demands within the service area are projected to increase by nearly 50% by 2030
2010 2015 2020 2025 2030 6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
Maximum Day DemandsAverage Day Demands
Year
Dem
ands
(mgd
)
Chapter 2 – Demand Projections
Tigard_WSP_0410
Chapter 3 – Hydraulic Model
The time and effort the City put into developing GIS and the new hydraulic model will provide continuing benefits, including
optimizing JWS infrastructure
Tigard_WSP_0410
Almost all of the distribution system has sufficient flows to fight fires
Chapter 4 – System Analysis (Fire Flows)
Tigard_WSP_0410
Additional supplies are needed to meet short term peak day supply shortages through 2016
Chapter 4 – System Analysis
Tigard_WSP_0410
The completion of ASR 3 will help the system to meet short term peak day supply shortages through 2016
Chapter 4 – System Analysis
Tigard_WSP_0410
With ASR Well 3, the JWS will meet the City’s needs through 2030 and beyond
Chapter 4 – System Analysis
Tigard_WSP_0410
The JWS will change the location at which supply enters the service area
Chapter 5 – Integration of JWS with Lake Oswego
Tigard_WSP_0410
Chapter 5 – Integration of JWS with Lake Oswego
JWS requires a new booster pump station to deliver water to Reservoir 10
Joint WaterSupply (Bonita Rd PS)
Existing Portland Supply
Tigard_WSP_0410
Recommended Capital Improvement ProjectsProject Cost(1) Year Reason
W1 - ASR Well 3 Design & Equip
$2,200,000 2011 Short Term and Long Term Water Supply
W2 - ASR Well 4 Siting, Drill, Equip
$3,004,000 2011-2013 Long Term Water Supply
PS1 - Replace Pump Station 5
Included in the JWS budget
2013-2015 Deliver Lake Oswego Supply into Tigard Water System
PS2 - New Booster Pump Station
$1,749,000 2012-2015 Deliver Water from 410 pressure zone to 10 MG Reservoir (Bull Mountain
PRV1 - New PRV from 550G to 410 Zone
$105,000 2011 Delivers ASR 3 Water to 410 pressure zone
P1 - Pipeline from 550G to 530 Zone
$1,967,000 2011-2012 Fire flow deficiencies on Canterbury Hill
P2 - Annual Fire Flow Improvements
$100,000/year 2014-2031 Distribution Fire flow deficiencies
P3 - Pipeline connecting PRV1
$17,000 2011 Delivers ASR 3 Water to 410 pressure zone
S1 - Water Master Plan Update
$140,000 2016 Integration of JWS
Very few capital projects are required due to the good condition of the existing water
system
Tigard_WSP_0410
Recommended Capital Maintenance Projects
Project Cost(1) Year ReasonMM1-Asset Management Program $100,000 2014 Define the Existing
InfrastructureRM1-Reservoir Seismic & Condition Assessment
$100,000 2015 Assess the Seismic Integrity of Older Reservoirs
PSM1-Replacement/Upgrade of PS 8 $2,110,000 2017+ Replace an Aging Pump Station
PM1- General Pipeline Replacement $70,000/year 2011-2031 Replace Aging Pipes
OM1-Meter Replacement $125,000/year 2011-2031 Replace Aging Meters
OM2-Hydrant Replacement $120,000/year 2011-2031 Replace Aging Hydrants
Planned CMP projects will maintain the high level of service provided to current customers
Questions?