City Council Meeting      August 21, 2012
Kickapoo Creek Crossing
Twin Buttes South Pool Pumping
Flow Information• S Pool Pumping Rate       77 A-F/Day• Flow into North Pool    55-60 A-F/Day• Flow into Nasworthy     15-...
South Pool Summary• Releases (pumped)   - 1,078 A-F• Evaporation            -192 A-F  Net Change           -1,270 A-F  Ele...
North Pool Summary• Inflow              + 812 A-F• Releases             -308 A-F• Evaporation         -142 A-F  Net Change...
Lake Nasworthy Summary• Inflow             +308 A-F• Releases            -376 A-F• Evaporation         -178 A-F  Net Chang...
Lake Levels• Changes in Reservoir Contents since August 3   South Pool                   -1,270 A-F   3’ Drop   North Pool...
ADDITIONAL WATER SUPPLYHickory Well Field Expansion
Well Field Banking and Allocation Chart Based on 6 mgd Usage 40,000 35,000 30,000                                         ...
Well Field Banking and Allocation Chart Based on 9 mgd Usage 40,000 35,000 30,000                                      Ban...
Hickory Well Field Layout
Cost Estimate to Expand to 9 mgd Capacity • Well Field:                             $10,720,000    • 5 New Wells Drilled, ...
Draft Schedule• Environmental Assessment             3 months• State and Federal Agency Review    3-4 months• Prepare Plan...
Water Advisory Recommendation• Expand the well field with the installation of 7 wells,  pumps, collector pipes, roads, ele...
Drought Level III Projection
Projected Water Supply                              20,000                                                    Drought     ...
Stage III Water Use Restrictions• No watering of lawns, shrubs, gardens, golf courses• City Council may designate days and...
Water Usage Surcharges• Residential accounts- $6.00/1,000 gallons for usage  over 10,000 gallons• Apartments- $5.00/1,000 ...
Water Distribution System
Distribution System Operation• System Flushing- Rusty Water & Water Quality• Water Quality- Maintain Chlorine Residual• In...
Water Disinfection• Current Disinfection Method  Chloramine- Chlorine combined with Ammonia is  added to treated water• Ot...
System Operational Change• Switch Disinfectant to Free Chlorine• Monitor Dispersion of Free Chlorine thru System• Continue...
Public Notices• Press Releases, City Web Site• Written notice to specific customers  -Hospitals  -Dialysis Units  -Pet Sto...
Water Aesthetics• Changes that may be observed  -Chlorine smell  -Fishy smell  -Cloudy/Colored appearance• Symptoms do not...
Schedule• Begin Free Chlorination   August 21• Complete Chlorination     October 31
City Council Meeting      August 21, 2012
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City Council August 21, 2012 Water

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City Council August 21, 2012 Water

  1. 1. City Council Meeting August 21, 2012
  2. 2. Kickapoo Creek Crossing
  3. 3. Twin Buttes South Pool Pumping
  4. 4. Flow Information• S Pool Pumping Rate 77 A-F/Day• Flow into North Pool 55-60 A-F/Day• Flow into Nasworthy 15-25 A-F/Day
  5. 5. South Pool Summary• Releases (pumped) - 1,078 A-F• Evaporation -192 A-F Net Change -1,270 A-F Elevation Change 3’ Down
  6. 6. North Pool Summary• Inflow + 812 A-F• Releases -308 A-F• Evaporation -142 A-F Net Change +362 A-F Elevation change 6” Increase
  7. 7. Lake Nasworthy Summary• Inflow +308 A-F• Releases -376 A-F• Evaporation -178 A-F Net Change -246 A-FElevation change 5” Down
  8. 8. Lake Levels• Changes in Reservoir Contents since August 3 South Pool -1,270 A-F 3’ Drop North Pool +362 A-F 6” Rise Lake Nasworthy -246 A-F 5” Drop
  9. 9. ADDITIONAL WATER SUPPLYHickory Well Field Expansion
  10. 10. Well Field Banking and Allocation Chart Based on 6 mgd Usage 40,000 35,000 30,000 Banked Water 25,000 6 mgd usage 20,000 15,000 10,000 Allocated Usage 5,000 0 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
  11. 11. Well Field Banking and Allocation Chart Based on 9 mgd Usage 40,000 35,000 30,000 Banked Water 25,000 20,000 9 mgd usage 15,000 2014 - 2018 10,000 Allocated Usage 5,000 0 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
  12. 12. Hickory Well Field Layout
  13. 13. Cost Estimate to Expand to 9 mgd Capacity • Well Field: $10,720,000 • 5 New Wells Drilled, Equipped • Well Field Collector Pipes & Roads • Booster Pump Station: $ 260,000 • 1 Additional Pump and Electrical • Contingencies: $ 2,920,000 • Engineering and Construction Mgmt. $ 2,160 000 • Total $16,060,000
  14. 14. Draft Schedule• Environmental Assessment 3 months• State and Federal Agency Review 3-4 months• Prepare Plans and Specs/Bid Project 5 months• TCEQ & TWDB Review 2 months• Construction 8-12 months
  15. 15. Water Advisory Recommendation• Expand the well field with the installation of 7 wells, pumps, collector pipes, roads, electrical• Expand booster pump station by 3 mgd (1 pump)• Utilize uncommitted construction funds estimated to be $15 million• 5 wells-$16 million; 7 wells-$19 million
  16. 16. Drought Level III Projection
  17. 17. Projected Water Supply 20,000 Drought 18,000 Level III 16,000Projected Supply, Acre-Feet 14,000 Ivie 12,000 Supply Depleted 10,000 8,000 6,000 4,000 2,000 0 Aug Sept Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sept Oct Month
  18. 18. Stage III Water Use Restrictions• No watering of lawns, shrubs, gardens, golf courses• City Council may designate days and times for hand watering of trees and foundations• No filling or refilling of swimming pools or fountains• No washing of vehicles except as needed for public health, safety and welfare
  19. 19. Water Usage Surcharges• Residential accounts- $6.00/1,000 gallons for usage over 10,000 gallons• Apartments- $5.00/1,000 gallons for usage over 3,000 gallons/apartment unit• All other accounts- $2.50/1,000 gallons
  20. 20. Water Distribution System
  21. 21. Distribution System Operation• System Flushing- Rusty Water & Water Quality• Water Quality- Maintain Chlorine Residual• Increased Flushing Due to Hot Weather & Lower Usage
  22. 22. Water Disinfection• Current Disinfection Method Chloramine- Chlorine combined with Ammonia is added to treated water• Other Approved Disinfection Method Free Chlorine- Chlorine gas is added to treated water
  23. 23. System Operational Change• Switch Disinfectant to Free Chlorine• Monitor Dispersion of Free Chlorine thru System• Continue Free Chlorination thru October
  24. 24. Public Notices• Press Releases, City Web Site• Written notice to specific customers -Hospitals -Dialysis Units -Pet Stores for aquariums
  25. 25. Water Aesthetics• Changes that may be observed -Chlorine smell -Fishy smell -Cloudy/Colored appearance• Symptoms do not affect safety of the water
  26. 26. Schedule• Begin Free Chlorination August 21• Complete Chlorination October 31
  27. 27. City Council Meeting August 21, 2012

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