HomeMy WebLinkAboutJoint Water Project PowerPointJoint Water Study &Joint Water Study &
Source Water Options StudySource Water Options Study
May 21, May 21, 20122012
City Council Work SessionCity Council Work Session
Current System Needs
Current Treatment Capacity of 7.5
MGD
Planned for additional well
Issues with development of Well 10
Pumping in 2007 and 2008 reached
7.05 and 6.42 MGD
Current Peak Rates 5.0 MGD
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Current System Capacity
20-Hour Pumping24-Hour Pumping
FirmTotal FirmTotal
CapacityCapacityCapacityCapacity
Well Capacity (MGD)5.046.486.057.78
0.28
Capacity Deficit (MGD)2.461.021.45
(Surplus)
Capacity Deficit (gpm)17007001000200 (Surplus)
Source Options
Construct Well 10
Connect Well 6 to WTF
Savage Interconnect
Joint Facility with SMSC
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Well 10
Currently planned next to Fire
Station #1
Raw Water Piping from Wells 8 & 9
in Place
Jordan Aquifer
Capacity Impacted by Well
Interference
Well 6 Connection
Located in Wilds
Jordan Aquifer
Good production well
Meets quality standards, historically
experienced aesthetic issues
Currently used as backup only
Requires 4.5 miles of watermain
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Savage Interconnect
Current emergency connection
Incompatible water
Not a long-term option
SMSC Joint Facility
Shared source, storage and
treatment
Provides more water
movement in western areas
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System Components
SMSC System Needs
One water supply well feeding north
treatment plant
Storage needed to meet fire
protection standards
Reverse Osmosis capacity of 250
gpmwith future needs of 350 gpm
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Recommended Joint Facility
Expansion of Current SMSC WTF
New 1,000 gpmJordan aquifer well
Additional Iron and manganese removal
filtration treatment
200,000 Gallon Storage
Reverse Osmosis Treatment for SMSC
Option Comparison
Joint Facility with Construct New Water Main for Savage
SMSCWell 10Well 6Interconnect
Capital Construction
$2,684,000$950,000$2,015,000$750,000
Cost
Increase in Yearly
Water Production
43826343814
(MG)
Operational Cost per
$0.46$0.74$0.74$2.98
1000 Gallons
Bond Payment Cost
$0.41$0.29$0.37$4.30
per 1000 Gallons
Total Cost per 1000
$0.87$1.03$1.11$7.28
Gallons
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Option Comparison
SMSC CostPrior Lake Cost
SMSC-Expand North Plant for Future Demands
$5,120,000-
Prior Lake-Build New 1000 gpmPlant and Wells for
-$5,000,000
West Side Expansion
SMSC & Prior Lake-Expand SMSC North Plant for
$3,520,000$2,684,000
Future Demands with Additions for Prior Lake
Savings With Joint Facility
$1,600,000$2,316,000
Agreement Guidelines
Water plant will serve both Prior Lake and SMSC based on 20
year estimated growth
SMSC owned and operated facility
Prior Lake must agree to purchase 438 million gallons/yr
(annual volume based on needed capacity) at established
rate
Established rate based on capital payment plus operating cost
Chemical and pumping costs adjusted annually based on
average pricing for prior year
Payback terms of capital to SMSC assumed at 3% over 20
years for analysis
20 Year agreement, structured renegotiation terms at 20
years
Prior Lake maintains purchased capacity after 20 years
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Next StepsNext Steps
1.1.Present Study Results to Governing BodiesPresent Study Results to Governing Bodies
2.2.Incorporate Feedback into Final Draft of StudyIncorporate Feedback into Final Draft of Study
3.3.Adopt StudyAdopt Study
4.4.Prepare Draft AgreementPrepare Draft Agreement
5.5.Adopt AgreementAdopt Agreement
6.6.Design FacilityDesign Facility
7.7.ConstructionConstruction
Questions/CommentsQuestions/Comments
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