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<br />Table 33. Alternative 2, Cooper Slough Reach 1 Quantities and
<br />Cost Estimate for 100-Year Design Channel Improvements
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<br />Table 34. Alternative 2, cooper Slough Reach 2 Quantities and
<br />Cost Estimate for 10-Year Design Channel Improvements
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<br />Item
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<br />Unit Cost
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<br />Fill
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<br />Quantity
<br />34,000 cubic yards
<br />17,000 cubic yards
<br />400 cubic yards
<br />30 linear feet
<br />2,000 linear feet
<br />300,000 square feet
<br />2,300 cubic yards
<br />1 each
<br />1,400 linear feet
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<br />16
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<br />Excavation
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<br />$
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<br />Riprap
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<br />50
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<br />4 - 6' x 10' box culverts
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<br />2,900
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<br />Trickle channel
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<br />34
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<br />Seeding
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<br />0.08
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<br />Concrete
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<br />250
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<br />Diversion
<br />structure
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<br />Lump Sum
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<br />Fencing
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<br />TOTAL CONSTRUCTION COST
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<br />Engineering & contingencies (35 percent of construction cos~)
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<br />Land (9.B acres @ $10,000)
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<br />Fiscal, legal and administration (5 percent of construction, engi-
<br />neering & contingencies, & land)
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<br />TOTAL COST
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<br />Annual Cost: 50-year life, 7-3/B percent
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<br />Operation and maintenance
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<br />TOTAL ANNUAL COST
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<br />76
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<br />3
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<br /> Total
<br />$ 102,000
<br /> 34,000
<br /> 20,000
<br /> 87,000
<br /> 68,000
<br /> 24,000
<br /> 575,000
<br /> 2,000
<br /> 22,400
<br />$ 934,400
<br /> 327,000
<br /> 98,000
<br /> 68,000
<br />$1,427,400
<br /> 108,500
<br /> 1,800
<br />$ 110,300
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<br />Item Quantity Unit Cost
<br />Excavation 10,600 cubic yards $ 3
<br />Fill 6,600 cubic yards 2
<br />Trickle channel 6,600 linear feet 34
<br />Seeding 264,000 square feet 0.08
<br />Riprap 400 cubic yards 50
<br />Drop structure 1 each 45,000
<br />Culverts: 4' x 12' 40 linear feet 600
<br /> 3 - 3' x B' 40 linear feet 1,000
<br /> 6' x 12' 200 linear feet 900
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<br />TOTAL CONSTRUCTION COST
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<br />Engineering & contingencies (35 percent of construction cost)
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<br />Land (10 acres @ $10,000)
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<br />Fiscal, legal and administration (5 percent of construction, engi-
<br />neering & contingencies, & land)
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<br />TOTAL COST
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<br />Annual Cost: 50-year life, 7-3/8 percent
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<br />Operation and maintenance
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<br />TOTAL ANNUAL COST
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<br /> Total
<br />$ 31,800
<br /> 13,200
<br /> 224,400
<br /> 21,000
<br /> 20,000
<br /> 45,600
<br /> 24,000
<br /> 40,000
<br /> 180,000
<br />$600,000
<br /> 210,000
<br /> 100,000
<br /> 45,500
<br />$955,500
<br /> 72,500
<br /> 3,300
<br />$ 75,800
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<br />77
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