Gerald Gentleman Station Well Field Meeting April 26, 2004

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Gerald Gentleman Station Well Field
MeetingApril 26, 2004
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WelcomeThank you for coming!
Beth Boesch Corporate Communications
Manager Nebraska Public Power District
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Meeting Agenda

• NPPD goals
• Communications
• Well field information effects
• Monitoring plan
• Project status
• Well mitigation process
• Current Follow-up Actions
• Questions

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NPPDs Goals Communication
Bill Fehrman President and CEO, Nebraska Public
Power District

• Ensure adequate water levels are in Sutherland
  Reservoir for GGS operation
• Help GGS comply with discharge water temperature
  limits
• Maintain long-term viability of the Ogallala
  Aquifer

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NPPDs Goals Communication (cont.)

• Identify and mitigate potential effects to
  neighboring wells before they create adverse
  impact
• Enforce NPPDs approved Board Resolution
• Provide for communication and feedback

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Communications

• Local committee
• Neighboring well owners/producers
• Twin Platte NRD
• Jim Goeke, Research Hydrogeologist, UNL
• NPPD
• Web-based Sutherland Reservoir elevation data
• Web-based project status updates

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Well Field Information Effects
Brian Barels Water Resources Manager, NPPD

• Cooling Water Process
• Well Field Configuration
• Projected well field effects
• Groundwater monitoring

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Well Field Configuration

• Approximately 40 wells
• 2,000 gallons/minute
• 350-500 feet deep
• 30-40 year life
• Final well locations are under review

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Projected Well Field Effects

• Some water table drawdown outside of GGS property
  boundary field is expected
• Pumped water will not be released to the
  downstream canal system other than through normal
  seepage/leakage
• No influence on Republican River system
• Low net consumption of water over time

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Groundwater Monitoring- Overview -

• Monitor effects of the GGS well field operation
• To update groundwater model for use as a
  predictive tool for mitigation

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Groundwater Monitoring Process

• Bi-annual Independent monitoring by Twin Platte
  NRD
• Thirty (30) existing non-NPPD wells near
  Sutherland Reservoir
• Continuous monitoring of GGS wells
• Additional NPPD monitoring of some wells off NPPD
  property
• Data collected will be available to the public

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Twin Platte NRD Independent monitoring sites
around GGS
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Project Status
John Cizek Senior Engineer/Project Manager,
Gerald Gentleman Station

• Well field installation contract to Henkle
  Drilling and Supply
• NPPD staff and Hemenway Groundwater Engineering
  providing construction management
• Mobilization April 19 drilling April 25
• Wells installed, tested and registered by July 1
• Installation of pumps, piping and power source
  will continue through Fall, 2004

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Well Mitigation Process
Bill Fehrman NPPD President and CEO

• Board Resolution
• NPPD will proactively identify and mitigate
  potential effects of the GGS well field on
  neighboring wells before these effects create
  adverse impact
• Neighboring well owners can also contact NPPD to
  initiate the mitigation process
• Challenge is identification of well problem causes

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Current Follow-up Actions

• Reviewing well locations
• Providing Sutherland Reservoir elevation data
• Developing off property monitoring
• Working with local committee
• Continuing to take your comments
• Web site www.nppd.com/drought/
• Call Center 1-877-ASK-NPPD

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Questions?
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Thanks for coming.Please drive home safely.