Download - Water System Planning Study
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Water System Planning Study
December 3, 2009
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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://reader036.vdocuments.mx/reader036/viewer/2022062720/5681338b550346895d9a91d2/html5/thumbnails/3.jpg)
Purpose and Need
• WTP near capacity (currently 75%; KDOW sanctions at 85%)
• Aging water infrastructure
• Increasing demand
• Regulatory changes
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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
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Scope of Work
• Evaluate existing systems and future needs
• Assess new and future regulatory changes
• Identify best site for WTP
• Recommend necessary system improvements
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Raw Water Sources
• Kentucky River intake OK
• Maximum permitted withdrawal OK
• Changes in next permit (no step down)
• Concerns – Dam #10 condition, spills
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Raw Water Sources
• Reservoir as backup supply
• Significant current leaks
• Siltation – lower intake clogged
• Aesthetic water quality issues 9 months of the year
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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
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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
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Existing Water Treatment Plant
• Initially constructed 1891
• Last major upgrade 1974
• Currently rated at 5.3 mgd
• Reliable, sustainable 3.2 mgd
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Existing Water Treatment Plant
Need interim improvements:
• Replace filter media
• Sludge removal equipment
• Potential expansion not feasible on current site, based on 1999 studies