PROJ02105

• Contract/PO #: FS0065FX
• Contractor Name: Greeley and Loveland Irrigation Company
• Contract Type: Loan
• Water District: 0
• County: Larimer
• Loan Projects - Doc Type: Feasibility Study

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Chapter V - Evaluation of Alternatives

Table V-3
Construction Cost Estimate
Boyd Lake Dam Low-Level Outlet Works

Alternative 2 - Cut and Cover Variation

Item No. Item Description Quantity Unit Unit Price Total Cost
1 MobilizationlDemobilization 1 Lump Sum $92,295.00 $92,295
2 Demolition 1 Lump Sum. $60,000.00 $60,()()()
3 Dewatering 1 Lump Sum $50,000.00 $50,()()()
4 Erosion Control 1 Lump Sum $5,000.00 $5,()()()
5 Earth Excavation 47,000 Cubic Yard $4.00 $1 88,()()()
6 Compacted Backfill 16,000 Cubic Yard $5.00 $80,()()()
Furnish and Install Articulated
7 Concrete Mat 7,000 Square Yard $15.00 $105,000
8 Furnish and Place Pipe Bedding 1,300 Cubic Yard $25.00 . $32,500
9 Furnish and Place Structural Concrete 260 Cubic Yard $500.00 $ 130,()()()
Furnish and Place Mass Concrete for
10 Pipe Encasement 200 Cubic Yard $200.00 $40,()()()
Furnish and Place Specialized
11 Backfill 700 Cubic Yard $10.00 $7, ()()()
Pipe Jack Under Existing Waterlines
12 with 48" RCP 80 Linear Feet $800.00 $64 ,()()()
Furnish and Place Grout in Existing
13 Concrete Arch Tunnel 35 Cubic Yard $150.00 $5,25(]
14 Furnish and Place Riprap 30 Cubic Yard $60.00 $1,8oo
15 Furnish and Place 48" CML Pipe 220 Linear Feet $220.00 $48,4oo
16 Furnish and Place 48" RCP Pipe 800 Linear Feet $110.00 $88,000
17 Furnish and Install 48" Sluice Gate 1 Each $8,000.00 $8,()()()
Furnish and Place 6' Dia. Manhole for
18 Access 2 Each $5,000.00 $1O,()()()
Subtotal Construction Cost $1,015,245
19 20% Contingency $203,05(]
Total Estimated Cost (Rounded) $1,218,000

Boyd Lake Dam Outlet System Feasibility Study 22

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