City of San Angelo Water Forum August 30, 2012
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City of San Angelo Water Forum August 30, 2012
- 1. City of San Angelo Water Forum August 30, 2012
- 2. EV SPENCE CITY OF SAN ANGELO WATER SOURCES ROBERT LEE BALLINGER O.H. IVIE GRAPE CREEK OC FISHER PAINT ROCK SAN ANGELO LAKE NASWORTHY TWIN BUTTES EDEN MELVIN CHRISTOVAL HICKORY BRADY AQUIFER
- 3. Robert Lee Garden Sterling City City TWIN BUTTES WATERSHED Grape Creek San Angelo TWIN BUTTES RESERVOIR Mertzon Rankin Big Lake Christoval Barnhart Eldorado
- 4. LAKE NASWORTHY WATERSHED Ballinger Grape Creek Paint Rock San Angelo LAKE NASWORTHY Mertzon Eden Christoval
- 5. Big Spring O. C. FISHER WATERSHED Stanton Garden City Robert Lee Sterling City Grape Creek O. C. FISHER RESERVOIR San Angelo Mertzon
- 6. Sweetwater Colorado City Big Spring E V SPENCE RESERVOIR Winters Robert Lee Sterling City Ballinger E V SPENCE WATERSHED Grape Creek San Angelo
- 7. O. H. IVIE WATERSHED Winters Robert Lee Sterling City Coleman Ballinger Grape Creek O. H. IVIE RESERVOIR Paint Rock San Angelo Mertzon Eden Brady
- 8. Thousands of Acre-Feet 40 120 20 140 0 100 60 160 200 180 80 1930 1932 1934 1936 1938 1940 1942 1044 1946 1948 O. C. Fisher 1950 Lake Nasworthy 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 Historical Lake Levels 1992 1994 1996 1998 2000 Twin Buttes 2002 2004 2006 2008 2010 2012
- 9. Ivie Reservoir Capacity Projections 200,000 100% of Average Inflow 150,000 Average Inflow (acre-feet/year) 100,000 50% of Average Inflow 50,000 Minimum Pumping Level No Inflow 0 Jun-12 Dec-12 Jun-13 Dec-13 Jun-14
- 11. Water Use Groups • Residential Use- 62% • Commercial Use- 18% • Industrial Use- 4% • System Operation- 16%
- 12. Gallons per Capita Day 100 150 200 250 50 0 183 1995 1996 1997 230 1998 1999 2001 2002 2003 2004 150 2005 174 2006 2007 152 2008 2009 2010 Average Water Use per Person per Day 2011 177
- 13. Water Consumption Goals 250 Actuals 200 Goal 150 100 50 0 1995 2000 2005 2010 2015 2020 1995 2000 2005 2010 2015 2020 Goal n/a 185 174 163 152 140 Actual 183 199 154 155
- 14. Efforts to Reduce Water Usage
- 21. Native Plants
- 23. Water Main Replacements Mains Replaced- 386,095 ft Construction Cost- $19,745,000 Estimated Water Savings- 500 million gallons per year
- 25. AMR Meter Installation Program • 18,000 AMR Installed • 28,000 meters replaced
- 26. Hickory Water Supply Project
- 27. Hickory Aquifer Minor Aquifers in Texas
- 28. HICKORY AQUIFER
- 30. HICKORY WELL FIELD LOCATION O. H. Ivie San Angelo Eden Melvin Brady 37,000 Acres
- 31. 9 EXISTING HICKORY WELLS Typical Well Location 9 7 8 6 1 4 3 5 2
- 33. Operating Well
- 34. HICKORY WELL FIELD PIPING 50,700 feet of 8 inch thru 20 inch piping 9 7 8 6 1 4 3 5 2
- 35. Well Field Collector Pipelines 16 inch Collector Pipeline Pipeline Installation Between Wells
- 36. Well Preparation Cleaning Well Casing
- 37. BOOSTER PUMP STATION BOOSTER PUMP STATION 9 7 8 6 1 WELL FIELD 4 3 5 2
- 39. 30” TRANSMISSION MAIN
- 40. Concrete Steel Cylinder Pipe
- 43. Transmission Pipeline Status STARTING POINT PUMP STATION TOTAL: 62 MILES COMPLETED: 16.5 MILES WELL FIELD
- 44. Groundwater Treatment - Radium Removal • Treatment Options: -Ion Exchange (IX) -Reverse Osmosis (RO) • Pilot Testing Results: -Both methods effective in radium removal -Ion Exchange Process- 99% water recovery -Reverse Osmosis Process- 90% water recovery
- 45. Treatment Method: Ion Exchange (IX) Pretreatment Ion Exchange (IX) Phosphate Finished Water (99% Recovery) Well Granular Spent Disposal to Media Resin Licensed Facility Filter
- 46. Ion Exchange “Filter” for Radium Removal
- 47. RADIOACTIVITY IN THE ENVIRONMENT
- 48. Radioactivity in the Environment 1.00E+06 1.00E+05 1.00E+04 Radium Concentration (pCi/g) 1.00E+03 1.00E+02 1.00E+01 1.00E+00 1.00E-01 1.00E-02 Lantern Glazed Gypsum Granite Soil Beans Teeth Bone Mantle Zircon Building Tiles
- 49. Radioactivity in the Environment 1.00E+02 1.00E+01 Radium Concentration (pCi/L) 1.00E+00 1.00E-01 1.00E-02 Untreated EPA Drinking Medical (Spa) Mineral Wine Beer Milk Hickory Water Water Limit Water Water
- 50. EPA Standard for Drinking Water • EPA limit for Radium- 5 piC/l • Health Risk Assessment for Radium -Based on long term exposure • If 10,000 people consumed 2 liters of water every day for 70 years, there would be a possibility of one additional incident of cancer
- 51. Levels of Radium in Drinking Water • Hickory Well Field- Average 35 pCi/l • Millersview-Doole WSC- 68 pCi/l • City of Brady Wells- 19 pCi/l pCi/L-Picocuries per liter
- 52. HICKORY PROJECT SCHEDULE Collector Piping Complete May 2012 Transmission Main Complete July 2013 Booster Pump Station and Wells Online July 2013 IX Plant On-Line July 2014 Jan-12 Jul-12 Feb-13 Aug-13 Mar-14 Sep-14
- 53. ADDITIONAL WATER SUPPLY Hickory Well Field Expansion
- 54. 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
- 55. 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
- 57. 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
- 59. Twin Buttes Pumping Project
- 60. Twin Buttes South Pool Pumps
- 61. Flow Through Equalization Channel
- 62. Water Flowing Into North Pool
- 63. Water Supply Stage Drought Level III
- 64. 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
- 65. 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
- 66. 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
- 67. City of San Angelo Water Forum August 30, 2012
Notes de l'éditeur
- Pipeline installation between wells