1. City Council Meeting
August 21, 2012

2. Kickapoo Creek Crossing

3. Twin Buttes South Pool Pumping

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. South Pool Summary
• Releases (pumped) - 1,078 A-F
• Evaporation -192 A-F
Net Change -1,270 A-F
Elevation Change 3’ Down

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. Lake Nasworthy Summary
• Inflow +308 A-F
• Releases -376 A-F
• Evaporation -178 A-F
Net Change -246 A-F
Elevation change 5” Down

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. ADDITIONAL WATER SUPPLY
Hickory Well Field Expansion

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. 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. Hickory Well Field Layout

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. 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. 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. Drought Level III Projection

17. Projected Water Supply
20,000
Drought
18,000 Level III
16,000
Projected 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. 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. 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. Water Distribution System

21. Distribution System Operation
• System Flushing- Rusty Water & Water Quality
• Water Quality- Maintain Chlorine Residual
• Increased Flushing Due to Hot Weather &
Lower Usage

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. System Operational Change
• Switch Disinfectant to Free Chlorine
• Monitor Dispersion of Free Chlorine thru System
• Continue Free Chlorination thru October

24. Public Notices
• Press Releases, City Web Site
• Written notice to specific customers
-Hospitals
-Dialysis Units
-Pet Stores for aquariums

25. Water Aesthetics
• Changes that may be observed
-Chlorine smell
-Fishy smell
-Cloudy/Colored appearance
• Symptoms do not affect safety of the water

26. Schedule
• Begin Free Chlorination August 21
• Complete Chlorination October 31

27. City Council Meeting
August 21, 2012