436 



BSITIAL MODIFICATION OF LOWER GRANITE DAM 



CAPITAL COSTS 



Dam Modifications Cost (in millions) 



Juvenile Collection Channel $15-29 



(Separator & holding facilities) ($14) 



Adult Ladder $ 3 



Reservoir Embankment Annoring S29 



Miscellaneous Structural Modifications S 1 



Engineering and Design @28% $13-17 



Construction management @ 1 1 % $5—6 



Subtotal $66-85 



Pump Modifications 



(Excluding Potlatch & Lewiston Country Qub) $ 5 J 



ToUl $72-91 million 



(Source: Army Corps of Engineers, 1992) 



Navigation Impacts (in millions) Range 



2.45 3.25 



(Source: Huppert, 1992 - NMFS Economics Technical Committee) 



This briefing paper was prepared by Pat Ford, for members of the Save Ojr Wild Salmon Coalition. 



Direct questions and comments to Ford at 1 51 1 N. 1 1th St, Boise ID 83702, 208-345-9067, or to Tim Steams, 



SOS, 6532 Phlnney Avenue North, #15, Seattle WA 98103. 206-784-4585. 



