Aquifer Storage and Recovery, Kelley Neumann

844 views

Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

Aquifer Storage and Recovery, Kelley Neumann

  1. 1. ASR: A Tool in DroughtManagement August 29, 2012 Texas Groundwater Summit Kelley Neumann Senior Vice President of Strategic Resources
  2. 2. Page 2 What is ASR? • Over 90,000 ac-ft of water stored undergroundAugust 29, 2012ASR: A Tool in Drought Management
  3. 3. Page 3 Project History • Part of SAWS 50-Year Water Supply Plan, adopted in 1998 • 3,200 acres purchased in south Bexar, Atascosa, and Wilson counties in 2000 and 2001 •ASR •site • Original project concept was for seasonal storage and Carrizo production • 2002 agreement with Evergreen Underground Water DistrictAugust 29, 2012ASR: A Tool in Drought Management
  4. 4. Page 4 Project History •Twin Oaks treatment facility • Phase I (completed 2004) – 17 wells – 30 mgd water treatment facility • Phase II (completed 2009) – 12 additional wells – Increased conveyance capacity to 64 mgd • Phase IIA (completed 2010) – 7 additional wells for Carrizo production • $260,000,000 investmentAugust 29, 2012ASR: A Tool in Drought Management
  5. 5. Page 5 Changing Operational Plan • Seasonal benefit versus long-term storage • Determining when to use • Using local Carrizo pumping • EARIP commitmentAugust 29, 2012ASR: A Tool in Drought Management
  6. 6. Page 6 Twin Oaks ASR Storage January 2004 to August 27, 2012 120,000 100,000 80,000 acre- feet 60,000 40,000 volume in storage (on August 27) 20,000 = 90,176 af 0August 29, 2012ASR: A Tool in Drought Management
  7. 7. Page 7 ASR and Local Carrizo Volumes 2004 to 2012 (2012 is thru 8/27) Twin Oaks ASR Local Carrizo Year Production Recharge Production (acre-feet) (acre-feet) (acre-feet) 2004 801 5,527 585 2005 936 13,491 0 2006 6,389 9,056 0 2007 430 Cumulative Maintenance Flows 20,199 0 2004 to March 2009 2008 1,249 10,852 214 2009 1,445 17,011 5,301 2010 1,706 25,533 391 2011 13,224 12,055 6,341 2012 2,974 5,266 2,597August 29, 2012ASR: A Tool in Drought Management
  8. 8. Page 8 Water Management Plan Drought of Record 2012 – 2020 600,000 500,000 400,000 300,000 200,000 100,000 0 2012 2013 2014 2015 2016 2017 2018 2019 2020 Current Supplies EARIP Commitment Planned Supplies ASR Supply Dry Demand (143 GPCD)August 29, 2012ASR: A Tool in Drought Management
  9. 9. Page 9 Operational Challenges • Determining storage capacity • Recovery capacity • Migration of the water • Influence of area irrigation wells • Water does not recognize property boundaries • Knowing when to turn it onAugust 29, 2012ASR: A Tool in Drought Management
  10. 10. Page 10 Migration of Stored Water From CH2MHill Technical Memorandum, South Bexar County ASR Recovery Assessment, Jan. 7, 2004August 29, 2012ASR: A Tool in Drought Management
  11. 11. Page 11 ASR Highlights • Project has exceeded all expectations • Water quality does not degrade • Amount of water available for storage and withdrawal has significant impacts on overall water supply plan • Ideal application for managing through droughtsAugust 29, 2012ASR: A Tool in Drought Management
  12. 12. Page 12 Policy/Legislative Considerations in Developing New Supply Regulatory Environment – Long-term stability is key to development of new and alternative water sources • Reasonable DFCs and longer-term permits • Ensuring protection of ASR projects • Distinct and favorable rules and regulations for the development of brackish groundwaterAugust 29, 2012ASR: A Tool in Drought Management
  13. 13. ASR: A Tool in DroughtManagement August 29, 2012 Texas Groundwater Summit Kelley Neumann Senior Vice President of Strategic Resources
  14. 14. Page 14 Well Locations ASR well monitoring well Carrizo wellAugust 29, 2012ASR: A Tool in Drought Management
  15. 15. Page 15 Well Locations ASR well monitoring well Carrizo wellAugust 29, 2012ASR: A Tool in Drought Management
  16. 16. Page 16 Well Locations ASR well monitoring well Carrizo wellAugust 29, 2012ASR: A Tool in Drought Management

×