water system planning study
DESCRIPTION
Water System Planning Study. December 3, 2009. Agenda. Purpose and Need Scope of Work Raw Water System Existing WTP Regulatory Issues Site Selection Proposed WTP Finished Water Transmission Proposed Improvements Costs Next Steps / Schedule. Purpose and Need. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/1.jpg)
Water System Planning Study
December 3, 2009
![Page 2: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/2.jpg)
Agenda
• Purpose and Need
• Scope of Work
• Raw Water System
• Existing WTP
• Regulatory Issues
• Site Selection
• Proposed WTP
• Finished Water Transmission
• Proposed Improvements
• Costs
• Next Steps / Schedule
![Page 3: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/3.jpg)
Purpose and Need
• WTP near capacity (currently 75%; KDOW sanctions at 85%)
• Aging water infrastructure
• Increasing demand
• Regulatory changes
![Page 4: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/4.jpg)
Purpose and Need (cont.)
• Reliable supply needed
• Bluegrass Water Supply Commission
• Other alternatives studied
• City decided to build new WTP 5/08
• Keep existing WTP in service
![Page 5: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/5.jpg)
Scope of Work
• Evaluate existing systems and future needs
• Assess new and future regulatory changes
• Identify best site for WTP
• Recommend necessary system improvements
![Page 6: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/6.jpg)
Raw Water Sources
• Kentucky River intake OK
• Maximum permitted withdrawal OK
• Changes in next permit (no step down)
• Concerns – Dam #10 condition, spills
![Page 7: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/7.jpg)
Raw Water Sources
• Reservoir as backup supply
• Significant current leaks
• Siltation – lower intake clogged
• Aesthetic water quality issues 9 months of the year
![Page 8: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/8.jpg)
Raw Water Pump Station
• 2 existing pumps – 5.5 mgd firm capacity
• Originally designed for 4 pumps – 15 mgd firm capacity
• Recommend 1 new pump for 2 operating with 1 standby – could deliver 14+ mgd to new WTP
![Page 9: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/9.jpg)
Raw Water Transmission Main
• Existing 18” line over 50 years old
• Limited existing capacity
• New 30” needed to new site (lifespan 50+ years)
• Existing 18” to continue serving existing WTP and reservoir
!H
!H
3Q
!H
BOO
NES
BOR
O
WATE
RW
OR
KS
FOR
D
NIC
K
FO
RD
-HA
MP
TO
N
ELKIN STATION
LETTIE
BRIDGEVIEW
PR
OV
IDE
NC
E
BUSHWOOD
QU
ISE
NB
ER
RY
OLD
BO
ON
ESBO
RO
OLD STONE CHURCH
STONECREST
RE
SE
RV
OIR
![Page 10: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/10.jpg)
Existing Water Treatment Plant
• Initially constructed 1891
• Last major upgrade 1974
• Currently rated at 5.3 mgd
• Reliable, sustainable 3.2 mgd
![Page 11: Water System Planning Study](https://reader035.vdocuments.mx/reader035/viewer/2022070406/5681407a550346895dabfce1/html5/thumbnails/11.jpg)
Existing Water Treatment Plant
Need interim improvements:
• Replace filter media
• Sludge removal equipment
• Potential expansion not feasible on current site, based on 1999 studies