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Alternative 4-Short-term(assumed 3 years)Pump and Treat at Industrial Ave source area;confirmatory
<br /> sampling;possible in-situ treatment/Impermeable or Permeable Barrier at Industrial Ave.source area;
<br /> Institutional Controls(IC),and Intrinsic Remediation(IR)
<br /> 2011 Revised Feasibility Study(Appendix D)
<br /> Former Nestle USA Inc.Facility,Ripon,CA
<br /> Pump&Treat for containment and mass removal
<br /> Pump&Treat in Upper Aquifer-use 3 evsting
<br /> wells,EI-1(90 gpm),EU-3(30 gpm),and EU4(30
<br /> gpm)=
<br /> 79 million gallons per year
<br /> Capital
<br /> Nev Monitoring Wells for performance evaluation
<br /> ($30,000/ea) 4wells $120,000
<br /> O&M
<br /> Annual O&M(carbon changecut,technician,
<br /> sampling&analysis) $150,000
<br /> Water disposal costs($1,0501106 gal.) 79.0 $82,950
<br /> Consulting and reporting for O&M 20% $46,590
<br /> Total annual O&M $279,540
<br /> Sub Total O&M(first 3 years) $838,620
<br /> Decommission
<br /> Decommission costs(wells and extraction system) $150,000
<br /> Consulting and negotiations for decom. 20% $30,000
<br /> Sub Total $180,000
<br /> Sub Total for Pump and Treat for Containment
<br /> and mass Removal 1,138,620
<br /> Post-Pump&Treat Confirmatory Sampling
<br /> Work Plan and Field Sampling to Assess
<br /> Industrial Ave source area $75,000
<br /> Reporting and Regulatory Meetings $15,000
<br /> Sub Total for Confirmatory Sampling $90,000
<br /> In-situ Treatment in Upper Aquifer
<br /> (dependent on sampling following unno&Treat
<br /> In-situ treatment,Capital and Inatallation Area=20015011.9 wells
<br /> Risk evaluation,W DR permitting,etc. $100,000
<br /> Treatment zone characterization for design $200,000
<br /> Mass removal with in situ treatment $800,000
<br /> Consulting,permitting,constr.oversight,etc. 20% 220 000
<br /> Sub Total $1,320,000
<br /> O&M
<br /> Performance Monitor Annual O&M $400,000
<br /> Consulting,reporting,and reg.interaction 20% $80,000
<br /> Annual O&M $480,000
<br /> Sub Total O&M 2years $960,000
<br /> Decommission
<br /> Decommission costs 9wells $90,000
<br /> Consulting and negotiations for decam. 20% $18,000
<br /> Sub Total Decommissioning $108,000 2,388,000
<br /> Sub Total for in-situ Treatment Upper Aquifer 2,388,000
<br /> Impermeable/Permeable Barrier
<br /> (dependent on sampling following ump&Treat
<br /> Capitai/Instail Impermeable Barrier Permeable Barrier
<br /> Barrier around highest concentration area in Upper Perimeter=920 linear feet to 70 feet depth=
<br /> Aquifer 64,400ftz Perimeter=400 Imeer feet to 70 feet depth
<br /> Risk evaluation $50,000 $50,000
<br /> Treatment zone characterization for design $100,000 $100,000
<br /> Installation of barrier ($30/ft') $1,932,000($120/ft') $3,360,000
<br /> Consulting,permitting,constr.oversight,etc. 20% $416,400 20% $702.000
<br /> Sub Total $2,498,400 $4,212,000
<br /> Institutional Controls
<br /> Abandon Vertical Conduits(MW4,MW-6,three
<br /> TH wells) $30K per well $150,000
<br /> Water Supply Replacement Activities $450,000
<br /> Investigation of other potential conduits $100,000
<br /> Coordinate Municipal Pumping 4 yearly meetings
<br /> Meetings with City of Ripon $400,000
<br /> Duration 20 years
<br /> Sub Total for Institutional Control $1,100,000
<br /> Intrinsic Remediation(IR)
<br /> Monitor ewsbng w s quart y we sin a
<br /> aquifers)
<br /> Work Plan,Sampling and Reporting to Establish
<br /> Lines of Evidence for IR(1st year) $200,000
<br /> Five year Evaluation @$100,00 per evert 30 years $600,000
<br /> Annual Monitoring(per year) 29 years $20,000
<br /> Sub Total for Intrinsic Remediation 30 Years $1,380,000
<br /> Revised Alternative 4 Total Cost: $3,708,620 $6,096,620 $6,207,020 $7,920,620
<br /> Pump&Treat Only In-situ Treatment Impermeable Banner Permeable Banter
<br /> Ongoing monitoring,sampling,analysis,reporting,and project management is not included in this cost
<br /> estimate.
<br /> 'This alternative assumes Pump&Treat at Industrial Ave.source area may be followed by In-situ treatment or
<br /> impermeable/permeable barrier,dependent on conditions after termination of Pump&Treat activities
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