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<br />Table 31. Alternative 2, Cooper Slough Reach 1 Quantities and
<br />Cost Estimate for 10-Year Design Channel Improvements
<br />
<br />Table 32. Alternative 2, Cooper Slough Reach 1 Quantities and
<br />Cost Estimate for 50-Year Design Channel Improvements
<br />
<br />Unit Cost
<br />
<br />Total
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<br />Item
<br />
<br />Quantity
<br />16,000 cubic yards
<br />1,000 cubic yards
<br />200 cubic yards
<br />30 linear feet
<br />2,000 linear feet
<br />150,000 square feet
<br />1,200 cubic yards
<br />1 each
<br />1,400 linear feet
<br />
<br />16
<br />
<br />Excavation
<br />
<br />$
<br />
<br />3
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<br />Fill
<br />
<br />2
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<br />Riprap
<br />
<br />50
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<br />3 - 4' X 10' box
<br />culverts
<br />
<br />1,500
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<br />Trickle channel
<br />
<br />34
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<br />Seeding
<br />
<br />0.08
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<br />Concrete
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<br />250
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<br />Diversion
<br />structure
<br />
<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 cost)
<br />
<br />Land (6.5 acres @ $10,000)
<br />
<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 />
<br />Item Quantity Unit Cost
<br />Excavation 20,300 cubic yards $ 3
<br />Fill 11,000 cubic yards 2
<br />Riprap 300 cubic yards 50
<br />4 - 6' x 10' box culverts 30 linear feet 2,300
<br />Trickle channel 2,000 linear feet 34
<br />Seeding 225,000 square feet 0.08
<br />Concrete 1,BOO cubic yards 250
<br />Diversion
<br />structure 1 each Lump Sum
<br />Fencing 1,400 linear feet 16
<br />TOTAL CONSTRUCTION COST
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<br />$ 48,000
<br /> 2,000
<br /> 10,000
<br /> 45,000
<br /> 6B,000
<br /> 12,000
<br /> 300,000
<br /> 2,000
<br /> 22,400
<br />$509,400
<br /> 178,300
<br /> 65,000
<br /> 37,600
<br />$790,300
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<br />Engineering & contingencies (35 percent of construction cost)
<br />
<br />Land (8 acres @ $10,000)
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<br />Fiscal, legal and administration (5 percent of construction, engi-
<br />neering & contingencies, & land)
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<br />TOTAL COST
<br />
<br />60,000
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<br />Annual Cost: 50-year life, 7-3/B percent
<br />
<br />Operation and maintenance
<br />
<br />1,800
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<br />TOTAL ANNUAL COST
<br />
<br />$ 61,800
<br />
<br /> Total
<br />$ 60,900
<br /> 22,000
<br /> 15,000
<br /> 69,000
<br /> 68,000
<br /> lB,OOO
<br /> 450,000
<br /> 2,000
<br /> 22,400
<br />$ 727,300
<br /> 254,500
<br /> 80,000
<br /> 53,100
<br />$1,114,900
<br /> 84,700
<br /> 1,BOO
<br />$ 86,500
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<br />74
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<br />
<br />75
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