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

1. BLUELAKEEXPANSION PROJECT

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)

4. DAMRAISESPILLWAYELEVATIONANDSECTION

5. MODEL
DEPICTING
DAM RAISE,
THRUST BLOCK,
ABUTMENTS,
DRAINAGE
TUNNEL AND
PLUNGE POOL.

6. Dam Site Staging Area with 600 Ton Crane

7. First Concrete
Pour on Right
Side of Dam
(6of 79blocksarenowcomplete)

8. Left Abutment and Left Side Dam Raise

9. INTAKE
SITE
PLAN
DRAINAGE TUNNEL

10. INTAKE STRUCTURE PROFILE

11. Intake PortalLocation
Right Abutment, Right Side Dam Raise and Intake Portal

12. Intake Portal

13. Intake Portal
(when under construction)

14. Gate Shaft Top Portal

15. Bottom of
Gate Shaft

16. POWERHOUSE SITE GENERAL LAYOUT

17. SURGE CHAMBER PROFILE

18. Inside
theAdit
Tunnel

19. Lower Project Site

20. New Powerhouse Site

21. Turbine Pit Wall Pour 1

22. New Penstock at SCIP

23. Turbine Generator Parts Stored on Site

24. 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.

25. 2014-2015RESERVOIR Operating Levels

26. Lake Levels

27. Blue Lake Expansion aerialphoto

28. 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/

29. Questions?
www.bluelakeexpansion.com