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Blue Lake Expansion - UPDATE September 2013

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Project manager Dean Orbison's update on the Blue Lake Hydro Expansion, presented to the Sitka Chamber of Commerce on Sep 4, 2013.

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Blue Lake Expansion - UPDATE September 2013

  1. 1. BLUELAKEEXPANSION PROJECT
  2. 2. Project Organizational Chart Crux Subsurface (Grouting Sub) City and Borough of Sitka (Owner) McMillen, LLC (Construction Manager) Barnard Construction (General Contractor) ASRC McGraw (Powerhouse Sub) Southeast Earthmovers (Excavation Sub) Blue Lake Tunnelers (Tunneling Sub) Schmolk (Mechanical Sub) NAES (Electrical Sub)
  3. 3. DAMRAISESPILLWAYELEVATIONANDSECTION
  4. 4. MODEL DEPICTING DAM RAISE, THRUST BLOCK, ABUTMENTS, DRAINAGE TUNNEL AND PLUNGE POOL.
  5. 5. Dam Site Staging Area with 600 Ton Crane
  6. 6. First Concrete Pour on Right Side of Dam (6of 79blocksarenowcomplete)
  7. 7. Left Abutment and Left Side Dam Raise
  8. 8. INTAKE SITE PLAN DRAINAGE TUNNEL
  9. 9. INTAKE STRUCTURE PROFILE
  10. 10. Intake PortalLocation Right Abutment, Right Side Dam Raise and Intake Portal
  11. 11. Intake Portal
  12. 12. Intake Portal (when under construction)
  13. 13. Gate Shaft Top Portal
  14. 14. Bottom of Gate Shaft
  15. 15. POWERHOUSE SITE GENERAL LAYOUT
  16. 16. SURGE CHAMBER PROFILE
  17. 17. Inside theAdit Tunnel
  18. 18. Lower Project Site
  19. 19. New Powerhouse Site
  20. 20. Turbine Pit Wall Pour 1
  21. 21. New Penstock at SCIP
  22. 22. Turbine Generator Parts Stored on Site
  23. 23. Generation Outage All work in the existing tunnel and new penstock must be completed during the generation outage when the tunnel will be sealed and dewatered. The generation outage will be scheduled during August and September 2014 so that the new intake may be submerged to allow commissioning of the generation equipment.
  24. 24. 2014-2015RESERVOIR Operating Levels
  25. 25. Lake Levels
  26. 26. Blue Lake Expansion aerialphoto
  27. 27. Construction Schedule Milestones: Planned/Actual Construction Start 11-20-2012 / 12-03-2012 Drainage Tunnel Complete 07-01-2013 / 05-05-2013 Tunnel ex. complete 08-19-2013 / 07-24-2013 Construct Powerhouse 08-24-2014/ Construct Dam 08-24-2014/ Ready for Generation Outage 08-24-2014/ Substantial Completion 02-01-2015/
  28. 28. Questions? www.bluelakeexpansion.com

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