|
EXHIBIT A
<br />VALLEY VIEW SEWER DISTRICT
<br />42nd Avenue South Gravity Sewer Improvements
<br />Cost Estimate
<br />Engineer: RH2 Engineering, Inc.
<br />Engineer's Estimate
<br />Bid Item
<br />Description
<br />Unit
<br />Quantity
<br />Unit Price
<br />Total
<br />D1
<br />Traffic Control
<br />LS
<br />1
<br />$ 25,000
<br />$ 25,000
<br />D2
<br />Shoring & Trench Safety Systems
<br />LF
<br />433
<br />$ 2
<br />$ 866
<br />D3
<br />Temporary Erosion and Sedimentation Control
<br />LS
<br />1
<br />$ 7,000
<br />$ 7,000
<br />D4
<br />Dewatering
<br />LS
<br />1
<br />$ 2,000
<br />$ 2,000
<br />05
<br />Potholing '
<br />EA
<br />5
<br />$ 900
<br />$ 4,500
<br />D6
<br />Landscape and Misc. Restoration
<br />LS
<br />1
<br />$ 7,000
<br />$ 7,000
<br />D7
<br />Gilliam Creek Temporary Gravity Wastewater Bypass
<br />LS
<br />1
<br />$ 9,500
<br />$ 9,500
<br />D8
<br />Other Temporary Wastewater Bypasses
<br />LS
<br />1
<br />$ 10,000
<br />$ 10,000
<br />D9
<br />60 -inch Saddle Manhole (E17 -77)
<br />LS
<br />1
<br />$ 7,000
<br />$ 7,000
<br />D10
<br />48 -inch Standard Manhole (F17 -21, F17 -22)
<br />EA
<br />2
<br />$ 7,000
<br />$ 14,000
<br />011
<br />72 -inch Standard Manhole with Extra Channeling Work (E17 -51)
<br />LS
<br />1
<br />$ 15,000
<br />$ 15,000
<br />D12
<br />72 -inch Standard Manhole (E17 -53)
<br />LS
<br />1
<br />$ 8,000
<br />$ 8,000
<br />D13
<br />60 -inch Shallow Manhole (E17 -76)
<br />LS
<br />1
<br />$ 7,000
<br />$ 7,000
<br />D14
<br />72 -inch Shallow Manhole (E17 -49, E17 -52)
<br />EA
<br />2
<br />$ 8,000
<br />$ 16,000
<br />015
<br />8 -inch SDR 35 PVC Pipe
<br />LF
<br />172
<br />$ 110
<br />$ 18,920
<br />D16
<br />8 -inch AWWA C900 DR 25 PVC Pipe
<br />LF
<br />45
<br />$ 120
<br />$ 5,400
<br />D17
<br />18 -inch SDR 35 PVC Pipe
<br />LF
<br />32
<br />$ 200
<br />$ 6,400
<br />D18
<br />30 -inch Class 52 Ductile Iron Pipe with Ceramic Epoxy Lining
<br />LF
<br />184
<br />$ 330
<br />$ 60,720
<br />D19
<br />Controlled Density Fill Pipe Encasement
<br />CY
<br />110
<br />$ 150
<br />$ 16,553
<br />D20
<br />Crushed Surfacing Top Course Compacted Trench Backfill
<br />LF
<br />1283
<br />$ 6
<br />$ 7,700
<br />D21
<br />Crushed Surfacing Base Course Compacted Trench Backfill
<br />LF
<br />1283
<br />$ 6
<br />$ 7,700
<br />D22
<br />Gilliam Creek Crossing Crushed Surfacing Top Course Compacted Trench Backfill
<br />LF
<br />995
<br />$ 6
<br />$ 5,970
<br />D23
<br />Foundation Material
<br />TON
<br />356
<br />$ 25
<br />$ 8,898
<br />D24
<br />Gravel Driveway Restoration
<br />LS
<br />1
<br />$ 1,400
<br />$ 1,400
<br />D25
<br />10 -inch HMA Patch with 8 -inch Crushed Rock Base
<br />SY
<br />144
<br />$ 60
<br />$ 8,613
<br />D26
<br />Record Drawings and Post - Construction Survey
<br />LS
<br />1
<br />$ 4,000
<br />$ 4,000
<br />Subtotal (Construction Costs)
<br />$285,140
<br />WSST (9.5 %)
<br />$27,088
<br />Total (Construction Costs w/ SST)
<br />$312,228.57
<br />8% of Total (with SST) for Construction Phase Admin and Engineering Coordination
<br />Estimated Subtotal 1
<br />20% of Subtotal 1
<br />Estimated Subtotal 2
<br />$24,978.29
<br />$337,206.85
<br />$67,441.37
<br />$404,648.23
<br />4/202011. 11:49 AM J: \Data \VSD \113 - 003 \01.120 Tukwila 40th to 42nd Ave S Wastewater Bypass \Cost Estimating \Tukwila ILA Cost estimate.xlsx
<br />Page8of8
<br />
|