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<br />REPAYMENT ANALYSIS
<br />
<br />Peterson study
<br />
<br />Total construction cost
<br />Interest during construction
<br />Irrigation allocation
<br />Flood control
<br />Salvage
<br />Power repayment
<br />Annual plyment W
<br />Annual costs
<br />Total annual replymmt
<br />Required mill rate
<br />
<br />$64,383,000
<br />3,482,000
<br />8,300,000
<br />350,000
<br />9,336,000
<br />49,8'29,000
<br />1,551,460
<br />268.111
<br />1,819,571
<br />5.5
<br />
<br />BENEFIT'-cosr ANALYSIS
<br />
<br />Annual Economic Costs
<br />FrJm al:ove
<br />Less salvage
<br />
<br />1,819,571
<br />
<br />(already included)
<br />$1,819,571
<br />
<br />~,1 Benefits
<br />Capacity value
<br />Energy value
<br />'rotal benefits
<br />
<br />1,727 ,000
<br />1.051,000
<br />~2,778,OOO
<br />
<br />Bene.fit-Gost Ratios
<br />
<br />Peterson StUdy: 1.53
<br />Bureau adjustment values .92
<br />
<br />Bureau Adjustment
<br />
<br />$74,579,000
<br />4,670,000
<br />8,100,000
<br />350,000
<br />o
<br />70,799,000
<br />2,496,200
<br />318.500
<br />2,814,700
<br />8.5
<br />
<br />2,814,700
<br />
<br />-359.000 2J
<br />2,455,700
<br />
<br />1,222,000
<br />1,051,000
<br />$2,273,000
<br />
<br />11 The cost of pressure tunnel was estimated using Bureau curves
<br />indexed up by a factor of 2.15. This value to present should be 2.56.
<br />The 'faJue of 25% for engineering, etc., should be 19%. The 12.5 foot
<br />diameter tunnel assumed for the estimate is not sufficiently large to
<br />accomlllodate even a 48,000 kilowe.tt power plant let alone a 68,000 kw
<br />plant. Based on an analysis to utilize up to 1,345 cfs through the
<br />tunn'll and restrict the velocity to a ma.JCimum of 10 feet per second
<br />and 11 head loss of slightly less than 10 feet per mile it vas found
<br />that a finished tunnel diameter of 14.3 feet was required. This
<br />would result in an a.verage annual generation of 357 million kilo.mtt-
<br />hour~; per year during a period similar to 1931-1947. The firm capa-
<br />bility for this diameter tunnel and net reservoir heads was 48,000
<br />kilo~latts which corresponds to-an 85 percent plant factor with the
<br />average armual generation. This is very close to a practical maximum
<br />
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