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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.

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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

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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

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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

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Almost all of the distribution system has sufficient flows to fight fires

Chapter 4 – System Analysis (Fire Flows)

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Additional supplies are needed to meet short term peak day supply shortages through 2016

Chapter 4 – System Analysis

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The completion of ASR 3 will help the system to meet short term peak day supply shortages through 2016

Chapter 4 – System Analysis

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With ASR Well 3, the JWS will meet the City’s needs through 2030 and beyond

Chapter 4 – System Analysis

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The JWS will change the location at which supply enters the service area

Chapter 5 – Integration of JWS with Lake Oswego

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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

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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

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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?