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<br />80uJderand left Hand Repair of Oullel Works
<br />CWCBFeasibilityStudy
<br />November 5, 1999
<br />
<br /> Table 4
<br /> Summary of Estimated Costs for Pipe Installation
<br /> Twin lakes (a.k.a. Davis No.1 Dam)
<br /> Unit Costs Item Costs
<br />Description Quantity Unit Low High Low High
<br /> Estimate Estimate Estimate Estimate
<br />Steel, 'Is" wall 62 LF $275 $325 $17,050 $20,150
<br />RCP, Class 3 62 LF $225 $250 $13,950 $15,500
<br />HDPE, SDR 32,5 (50 psi) 62 LF $250 $300 $15,550 $18,600
<br />
<br /> Table 5
<br />Drop-Inlet Spillway and Outlet Construction Cost Estimate
<br /> Twin lakes (a,k,a. Davis No.1 Dam)
<br /> Unit Costs Item Costs
<br />Description Quantity Unit Low High Low High
<br /> Estimate Estimate Estimate Estimate
<br />Mobilization 1 LS $4,000 $6,000 $4,000 $6,000
<br />Excavation 1,265 CY $4 $7 $5,060 $8,855
<br />Dam Foundation Preparation 1 LS $4,000 $6,000 $4,000 $6,000
<br />and Dewatering
<br />Hauling, Placement and 1,265 CY $7 $9 $8,855 $11,385
<br />Compaction of Embankment
<br />Hauling, Placement and 20 CY $18 $22 $360 $440
<br />Compaction of Pipe Bedding
<br />Precast, Concrete Manhole: 1 LS $1,200 $1,600 $1,200 $1,600
<br />60-inch diameter, 9.7-foot
<br />height, 96-inch base, rubber
<br />o-ring seals
<br />Dam Crest Cut and Fill 330 CY $4 $7 $1,320 $2,310
<br />Steel Pipe, 'Is-inch wall, 30- 62 LF $275 $325 $17,050 $20,150
<br />inch diameter
<br />30,inch Headgate with 10 1 LS $4,000 $5,000 $4,000 $5,000
<br />feet of Galvanized Frame
<br />Class 6 Road Base 370 CY $18 $22 $6,660 $8,140
<br />Riprap and Bedding 80 Ton $14 $18 $1,120 $1 ,440
<br />Walkway, Trash Racks, and 1 LS $6,000 $8,000 $6,000 $8,000
<br />Miscellaneous Supports
<br />Total Budget Estimate $59,625 $79,320
<br />
<br />-7-
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