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Table 1
<br />Preliminary Closure Cost Estimate
<br />Foothill Sanitary Landfill
<br />San Joaquin County, California
<br />Items
<br />Quantity
<br />Units
<br />Unit Cost
<br />Extn
<br />FINAL COVER SOIL
<br />1 Preparation of landfill to receive cover (final grading)
<br />673
<br />AC
<br />$3,700
<br />$2,490,100
<br />2 Evapotranspiration Layer (on-site soils)
<br />3,800,200
<br />CY
<br />$4.00
<br />$15,200,800
<br />3 Vegetation (mulch and hydroseeding)
<br />700
<br />AC
<br />$3,000
<br />$2,100,000
<br />Final Cover Soil Subtotal
<br />$19,790,900
<br />MONITORING SYSTEM
<br />4 Perimeter Landfill Gas Monitoring System
<br />4
<br />EACH
<br />$17,000
<br />$68,000
<br />5 Groundwater Monitoring System
<br />2
<br />EACH
<br />$10,500
<br />$21,000
<br />6 Leachate Control System
<br />10
<br />EACH
<br />$2,500
<br />$25,000
<br />Monitoring Systems Subtotal
<br />$114,000
<br />LFG CONTROL
<br />7 Disabling and Rebuilding Gas System
<br />1
<br />LS
<br />$325,000
<br />$325,000
<br />8 System expansion at Closure
<br />10
<br />AC
<br />$8,000
<br />$80,000
<br />LFG Control 5 stem Subtotal
<br />$405,000
<br />SITE IMPROVEMENTS
<br />9 Drainage Structures
<br />32,000
<br />LF
<br />$6.00
<br />$192,000
<br />10 Security Measures
<br />5,000
<br />LF
<br />$35
<br />$175,000
<br />11 Survey Monuments
<br />4
<br />EACH
<br />$6,000
<br />$24,000
<br />12 Dismantle Structures
<br />5,500
<br />SF
<br />$5.00
<br />$27,500
<br />13 Decommission Environmental Monitoring System
<br />None planned for
<br />closure
<br />$0
<br />Other Site Improvement Subtotal
<br />$418,500
<br />Total Construction Cost
<br />$20,728,400
<br />PROFESSIONAL SERVICES
<br />14 Engineering (Design and Bid Documents)
<br />2%
<br />of total construction
<br />cost
<br />$414,600
<br />15 Topographic and Boundary Survey
<br />1
<br />LS
<br />$77,000
<br />$77,000
<br />16 Construction Quality Assurance
<br />5%
<br />Final Cover
<br />$989,500
<br />Professional Services Subtotal
<br />$1,481,100
<br />TOTAL ESTIMATED CLOSURE COST
<br />$22,209,500
<br />CONTINGENCY (20%)
<br />$4,441,900
<br />TOTAL
<br />$26,651,400
<br />AC = acre
<br />SF = square foot
<br />CY = cubic yard
<br />LS = lump sum
<br />All Costs are in 2010 dollars.
<br />FINAL COVER - Assume ET cover over existing vegetated 18 inch thick (minimum) intermediate cover; See Note 1
<br />below.
<br />ET cover thickness over existing cover (FT) 3.5
<br />Volume of ET cover placed (CY), over 673 AC 3,800,200
<br />1. Unit cost for preparation of landfill to receive final cover includes disking vegetation, sequentially stripping 6 inches of
<br />the organic rich intermediate soil cover, and subsequently incorporating 3 inches of this material into the first two 1.0 -foot -
<br />thick layers of the ET soil cover. (For two net 1.25 -foot -thick ET soil layers over the 1.0 foot existing intermediate soil
<br />cover). This unit cost includes:
<br />1 Disking @ $500/AC
<br />1 Stripping @ $1,614/AC 807 CY/AC @ $2.00/CY for excavation (See UCB Table for excavation)
<br />2 Placements @ 2 x $807/AC 404 CY/AC @ $2.00 CY for eartfill as placed with each 1 foot
<br />of ET soil cover (See UCB Table for earthfill)
<br />TOTAL $3,728/AC
<br />Call $3,700/AC
<br />2. Unit cost to excavate, transport, and place ET soil cover, in two 1.0 foot lifts (1.25 foot net lifts when blended
<br />with the
<br />organic soils), and a final 1.5 foot lift before mulching is $4.00/CY; See UCB Table.
<br />3. Vegetation (mulch and hydroseeding of the upper 6 inches of the ET soil cover) is estimated at $3,000 per acre; See
<br />UCB Table.
<br />09San Joaquin CounlyM6605 FooWhClosure PC CosIslFH Clo-PoslClo Rev 07262010.xis. Table 2-3 Clo
<br />Foothill Sanitary Landfill
<br />Preliminary PCPM Plan Page 1 of 4
<br />Public Works/Solid Waste
<br />County of San Joaquin - Revised July 28, 2010
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