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Field of View Case Study

Field of View Case Study. Sustained Compliance for Public Water Systems, Chapter 2 , Workshop Department of Environmental Conservation Drinking Water Program Anchorage, September 30, 2011 Jeff Warner Program Coordinator 376-1861 jeff.warner@alaska.gov. Presentation Outline.

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Field of View Case Study

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  1. Field of View Case Study Sustained Compliance for Public Water Systems, Chapter 2, Workshop Department of Environmental Conservation Drinking Water Program Anchorage, September 30, 2011 Jeff Warner Program Coordinator 376-1861 jeff.warner@alaska.gov

  2. Presentation Outline • Purpose of the study • Background information about the system • Indications of a problem • Additional challenges • Searching for a new source • Plans for resolution of water quality/quantity • Communication with homeowners

  3. Background Information • Initial construction of the water system began in 2004 • Well drilled in September 2004 • 145 feet deep • Flow tested for 4 hours = 30 gpm • System designed for 17 service connections • 600 gallons per day per home = 15,300 gallons per day • Well yield = 43,200 gallons per day

  4. Background Information • Original water system design • 2,000 gallon storage tank (required 1,700 gallons of storage) • 2 booster pumps • Three 36 gallon pressure tanks Pressure Tanks Well Booster Pumps Storage Tank To Distribution System

  5. Background Information • Final Approval to Operate granted in December 2005 • Approval to Construct granted in December 2005 • Mainline extension and additional 17 service connections for a total of 34 service connections • Approval to Construct granted in June 2006 • Mainline extension and additional 20 lots for a total of 54 service connections on the system • Original plans projected full build-out within 5-10 years

  6. Something’s Wrong!! • In 2006, the system began experiencing turbidity • In January 2008, construction approval was granted for a coagulation and filtration treatment system • In July 2008, approval to operate was granted for 50% of the treatment system (2 of 4 required filters) • less than 27 of 54 service connections completed

  7. Something’s Wrong • Documented complaints began in May, 2008 • Water is gray, but sediment settled out over time • Turbidity treatment went on-line in July 2008 • 2 of 4 filters installed • Maintenance issues with filters • Supplementing the well with hauled water • Well production had decreased by two thirds • Complaint in June, 2009 • Water “turned to mud”

  8. Field of View Water Directly from the tap After settling for 10 days

  9. Time to look for a new source • Original well producing 5 gpm • Drilled in six additional locations throughout the subdivision • Where’s all the water?????? • In March, 2009, they finally hit water in well #7. • Initial flow test produced 10 gpm • Within a couple months, production dropped to 5 gpm

  10. Drill Baby Drill! • Well #1 – Drilled in 2004 Initial output of 30 GPM By 2009, output had decreased to 5 gpm • Well #2 – Drilled in 2004 Status: Initially produced but quickly diminished to 0 gpm • Well #3 – Drill date unknown Located several lots away from Well #1 Status: DRY • Well #4 - Drill date unknown Located on a separate tract from Well #1 Status: DRY • Well #5 - Drill date unknown Located on a separate tract from Well #1 Status: DRY • Well #5 – Drilled in 2009 Located on a separate tract from Well #1 Status: DRY • Well #7 – Drilled in March 2009 Depth – 340 feet Output of 5-6 gpm • Currently wells #1 & #7 are connected to the system with a combined output of approximately 10 gpm

  11. What else can go wrong? • Summary of challenges at this point: • Well production drastically dropped off • Means they have to buy and haul water = $$$ • Drilled 6 additional wells = $$$ • 50% staffed on maintenance staff • Due to other expenses, staff was not getting paid • Diminished water quality • Staining appliances = $$$ • Silt clogging dishwashers/washing machines = $$$ • Homeowners paying water bills

  12. Something has to change • New system owner/operator • Took over in February 2010 • Review of records • Meetings with homeowners • Develop a plan to resolve the quality/quantity issue

  13. Weighing the Options • Find a new aquifer within the subdivision • Hydro-geologic evaluation of the area • Fractured bedrock with very small veins of ground water • Connect to existing system on neighboring property • Grouse Ridge Subdivision • Individual low producing wells, privately owned • Private owners • Develop a man-made surface water source • Security issues + expenses = unattractive option

  14. It’s good to have a plan! • …but how are we going to pay for it? • Sources of funding • Rate payers (homeowners) • Private lenders • USDA Rural Development • DEC, Municipal Grants and Loans • Budget • Plan for the future (5-10 years out) • Communications with homeowners

  15. And now, the rest of the story… • October 2011 – Engineering submitted to DEC, loan agreement finalized • November 2011 – Award construction contract • December 2011 – Begin construction • Well house, excavation work, HDPE installation etc. • March 2012 – MEA electrical main installation • May 2012 – Finalize mechanical work • June 2012 – Bring new well on-line • August 2012 – Decommission all existing (old) wells

  16. Summary • Purpose of the study • Background information about the system • Indications of a problem • Additional challenges • Searching for a new source • Plans for resolution of water quality/quantity

  17. Resources and Contacts • State of Alaska/DEC/Drinking Water Program file – Field of View Park, PWSID #220135 • State of Alaska/DEC/Drinking Water Protection/Anne Gleason – GIS Maps • State of Alaska/DNR/Division of Mining, Land and Water Hydrologic Survey • Ben Winkler – Oasis Water LLC • oasis@ewaterpro.com

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