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-4
Construction Cost Estimate
Boyd Lake Dam Low-Level Outlet Works

Alternative 3 - Microtunneling

Item No. Item Description Quantity Unit Unit Price Total Cost
1 MobilizationlDemobilization 1 Lump Sum $86,000.00 $86,000
2 Demolition 1 Lump Sum $30,000.00 $30,000
3 Dewatering 1 Lump Sum $30,000.00 $30,000
4 Erosion Control 1 Lump Sum $5,000.00 $5,000
5 Earth Excavation 24,300 Cubic Yard $4.00 $97,200
6 Compacted Backfill 10,000 Cubic Yard $5.00 $50,0Q()
Furnish and Install Articulated
7 Concrete Mat 1,500 Square Yard. $15.00 $22,500
8 Furnish and Place Pipe Bedding 2,000 Cubic Yard $25.00 $50,0Q()
9 Furnish and Place Structural Concrete 200 Cubic Yard $500.00 $100,000
Furnish and Place 48" CML Steel
10 Pipe 50 Linear Feet $220.00 $11,000
Furnish and Place Mass Concrete for
11 Pipe Encasement 45 Cubic Yard $200.00 $9,0Q()
Furnish and Place Specialized
12 Backfill 160 Cubic Yard $10.00 $1,600
13 Microtunnel with 48" CML Steel Pipe 250 Linear Feet $950.00 $237,500
Furnish and Place Grout Behind 48-
14 inch CML Steel Pipe 110 Cubic Yard $120.00 $13,200
" Furnish and Place Grout in Existing
15 Concrete Arch Tunnel 110 Cubic Yard $120.00 $13,200
16 Furnish and Place Riprap 30 Cubic Yard $60.00 $1,800
17 Furnish and Place 48" RCPPipe 1600 Linear Feet $100.00 $160,000
18 Furnish and Install 48" Sluice Gate 1 Each $8,000.00 $8,000
Furnish and Place 6' Dia. Manhole for
19 Access 4 Each $5,000.00 $20,0Q()
Subtotal Construction Cost $946,0()(J
20 20% Contingency $189,200
Total Estimated Cost (Rounded) $1,135,000

Boyd Lake Dam Outlet System Feasibility Study 23

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