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<br /> ALTERNATIVE 2 r.F_oMArR1x
<br /> ENHANCED IN-SITU BIOREMEDIATION.
<br /> AIR SPARGING/BIOVENTING
<br /> PRELIMINARY COST ESTIMATE Page 2 of 2
<br /> Former ContiGroup Grain Elevator
<br /> 1805 Harbor Street
<br /> Stockton, California
<br /> TASK
<br /> ACTIVITY QUANTITY UNIT UNIT S COST$ SUBTOTAL S
<br /> TREATMENT SYSTEM INSTALLATION
<br /> pre-field acnwtfes 71,000
<br /> Treatment system design, prepare RFP/bid specs 1 lump sum 45,000 45,000
<br /> County(building/electrical,etc)and CARB air permits I lump sum 15,000 15,000
<br /> Land surveyor 1 lump sum 5,000 5,000
<br /> Bidding and Contractor Selection 60 hrs 100 6,000
<br /> install treatment system and monitoring 300,000
<br /> Install system containment pad I lump sum 4,000 4,000
<br /> Air pumping system I lump sum 48,000 48,000
<br /> Vapor extraction system I lump sum 78,000 78,000
<br /> Control system with alarms 1 lump sum 20,000 20,000
<br /> Air distribution networks(belowgrade),and wellhead completion 1 lump sum 150,000 150,000
<br /> other mise 93,000
<br /> Treatment system installation/oversight 40 man-days 1,500 60,000
<br /> Power drop 1 each 18,000 18,000
<br /> System Startup and Testing 1 lump sum 15,000 15,000
<br /> reportrn50,000
<br /> Treatment system installation report,As-builts and O&M manual 1 lump sum 50,000 50,000
<br /> TREA TMENT SYSTEM SUBTOTAL S 514,000
<br /> SYSTEM D&M AND MONITORING,10 YEARS S 920,000
<br /> Property Access/Encroachment/Easement Agreements 10 years 12,000 120,000
<br /> System O&M (carbon changeout disposal and system 10 years 10,000 100,000
<br /> Semiannual groundwater monitoring,data evaluation,and 10 years 28,000 280,000
<br /> reporting Includes estimate of analytical costs
<br /> Vapor monitoring and reporting(monthly) 10 years 30,000 300,000
<br /> Electricity 10 years 12,000 120,000
<br /> MONITORING SUBTOTAL $ 920,000
<br /> WELL DESTRUCTION NPV
<br /> re- field activities 10,000
<br /> Logistics,application for well destruction permit 1 lump sum 10,000 10,000
<br /> destruction of 4 existing-monitorinz wells and the spar-alvapor wells 72,500
<br /> Contractor 1 lump sum 50,000 50,000
<br /> Coordination,oversight,and report 15 day 1,500 22,500
<br /> NPV.WELL DESTRUCTION SUBTOTAL(Year 10) S 82,500
<br /> 15%project management cost 0 15 1,742,000 261,300
<br /> 20%contingency cost 02 1,742,000 348,400
<br /> jTOTAL $ 2,351,500
<br /> I 1pot 5afe\9000$\99631CAP1AppB Altematives xis 10/6/20049 51 AM
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