Progress Report<br />San Angelo City Council<br />August 2, 2011<br />
Agenda<br />Overall project progress<br />Radioactivity in the environment<br />Single use Ion Exchange treatment update<b...
Overall Project Progress<br />
Radioactivity in the environment<br />
Radioactivity Is Ubiquitous in the Environment<br />
Radioactivity Is Ubiquitous in the Environment<br />
Safety Considerations<br />No requirements for personnel badges, air monitors, or shielding<br />Standard OSHA requirement...
150’ = 15 Story Building<br />Hickory water can pass through soil without approaching regulatory limit<br />Soil<br />Envi...
Impact on Policies and Procedures<br />Soil, water, pipe scale samples<br />Collect water, soil, and scale samples at site...
Case Study<br />Central TX Granite<br />Distribution pipe<br />Glazed salt shaker<br />Vaseline glass<br />
SINGLE USE ION EXCHANGE UPDATE<br />
Simplified Pilot Testing Process Flow Diagram<br />
Results Summary<br />Single use ion exchange is effective in removing radium, however, breakthrough occurred more frequent...
Single-Use Media Capital Cost<br />Cost in $ Millions<br />
Single-Use Media O&M Cost<br />Cost in $ Millions<br />
Pipe loop study<br />
Pipe Loop Study<br />Purpose: Evaluate pipe scale and radionuclide deposition using various pipe materials, pipe velocitie...
Preliminary Results & Observations of Pipe Loop Study<br />
GWTF Site location<br />
Groundwater Treatment Facility Location<br />Two locations are considered for the groundwater treatment facility (GWTF)<br...
   Factors Affecting Treatment Location<br />
Results of Groundwater Treatment Facility (GWTF) Location Evaluation<br />Based on the following factors: <br />Capital Co...
Other treatment options<br />
Single-Use Media NPV Cost Comparison<br />Cost in $ Millions<br />
Why look at other treatment options?<br />NPV analysis of pilot test results indicated that additional treatment options m...
RO at COSA WTP (90% Recovery)<br />
NPV of Treatment Technologies at COSA<br />Cost in $ Millions<br />
NF/RO Treatment Update<br />Conducted preliminary desktop membrane models based on revised data<br />Nanofiltration<br />L...
RO Membrane Schedule<br />
Single-Use Media Schedule<br />
Questions & Answers<br />San Angelo City Council<br />August 2, 2011<br />
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City Council August 2, 2011 Hickory Ground Water Project Presentation

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City Council August 2, 2011 Hickory Ground Water Project Presentation

  1. 1. Progress Report<br />San Angelo City Council<br />August 2, 2011<br />
  2. 2. Agenda<br />Overall project progress<br />Radioactivity in the environment<br />Single use Ion Exchange treatment update<br />Pipe loop study<br />Ground water treatment facility site location<br />Other treatment options<br />Questions<br />
  3. 3.
  4. 4. Overall Project Progress<br />
  5. 5.
  6. 6. Radioactivity in the environment<br />
  7. 7. Radioactivity Is Ubiquitous in the Environment<br />
  8. 8. Radioactivity Is Ubiquitous in the Environment<br />
  9. 9. Safety Considerations<br />No requirements for personnel badges, air monitors, or shielding<br />Standard OSHA requirements will be sufficient<br />Gloves and boots<br />Wash hands<br />Standard safety equipment<br />Supervisors and personnel should be trained to use radiation monitoring equipment, conduct radiation surveys, and collect soil samples<br />Not Required<br />OSHA-Required<br />Recommended<br />
  10. 10. 150’ = 15 Story Building<br />Hickory water can pass through soil without approaching regulatory limit<br />Soil<br />Environmental Impact of Pipe Break<br />
  11. 11. Impact on Policies and Procedures<br />Soil, water, pipe scale samples<br />Collect water, soil, and scale samples at site of pipe break<br />Radiation survey instruments on maintenance trucks and in lab<br />Develop standard documentation guide for pipe break events<br />Careful documentation of surveys, samples, and personnel<br />Phase 1 Environmental Assessment (all appropriate inquiry) [munitions dump; oil and gas production facilities; landfill]<br />Guide<br />for Documenting Pipe Breaks<br />Radiation survey instruments<br />Documents, forms, etc.<br />
  12. 12. Case Study<br />Central TX Granite<br />Distribution pipe<br />Glazed salt shaker<br />Vaseline glass<br />
  13. 13. SINGLE USE ION EXCHANGE UPDATE<br />
  14. 14. Simplified Pilot Testing Process Flow Diagram<br />
  15. 15. Results Summary<br />Single use ion exchange is effective in removing radium, however, breakthrough occurred more frequently than what was originally estimated using desktop models.<br />Two of the three media proved to be effective<br />
  16. 16. Single-Use Media Capital Cost<br />Cost in $ Millions<br />
  17. 17. Single-Use Media O&M Cost<br />Cost in $ Millions<br />
  18. 18. Pipe loop study<br />
  19. 19. Pipe Loop Study<br />Purpose: Evaluate pipe scale and radionuclide deposition using various pipe materials, pipe velocities, and phosphate concentrations. <br />
  20. 20. Preliminary Results & Observations of Pipe Loop Study<br />
  21. 21. GWTF Site location<br />
  22. 22. Groundwater Treatment Facility Location<br />Two locations are considered for the groundwater treatment facility (GWTF)<br />Hickory well site<br />COSA Water Treatment Plant <br />Several factors should be considered when evaluating the locations of the GWTF<br />Decision should be based on what is best for COSA<br />
  23. 23. Factors Affecting Treatment Location<br />
  24. 24. Results of Groundwater Treatment Facility (GWTF) Location Evaluation<br />Based on the following factors: <br />Capital Cost<br />O&M Cost<br />Operational efficiency<br />Treatment options<br />We recommend that the GWTF be located at the San Angelo Water Treatment Plant<br />
  25. 25. Other treatment options<br />
  26. 26. Single-Use Media NPV Cost Comparison<br />Cost in $ Millions<br />
  27. 27. Why look at other treatment options?<br />NPV analysis of pilot test results indicated that additional treatment options may be viable <br />Results indicated that Nanofiltration or Reverse Osmosis (NF/RO) could become a more competitive option<br />NF/RO offer alternate disposal options thus reducing O&M costs.<br />NF/RO will improve overall City water quality<br />
  28. 28. RO at COSA WTP (90% Recovery)<br />
  29. 29. NPV of Treatment Technologies at COSA<br />Cost in $ Millions<br />
  30. 30. NF/RO Treatment Update<br />Conducted preliminary desktop membrane models based on revised data<br />Nanofiltration<br />Low energy Reverse Osmosis (RO)<br />Brackish RO <br />Low-energy RO may provide good rejection and recovery while minimizing energy needs<br />Next steps: Membrane (RO) pilot plant investigation <br />
  31. 31. RO Membrane Schedule<br />
  32. 32. Single-Use Media Schedule<br />
  33. 33. Questions & Answers<br />San Angelo City Council<br />August 2, 2011<br />
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