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TABLE 1 <br /> Remediation Feasibility Matrix <br /> Ranch Market <br /> . 23596 South Santa Fe Road <br /> Riverbank California <br /> Estimated <br /> Duration of Task Cost Number of Estimated Option <br /> Remediation Events Costs Cast Feasible" <br /> Option 4 Soil Vapor Extraction and Air Sparging <br /> 5 years Monitoring and Sampling $20000 5 $100000 Yes <br /> Subtotal $100,000 <br /> System Installation Costs,4 SVE and 6 AS Wells <br /> I report Final Remediation Plan $3000 1 $3000 <br /> 1 event Permit-Preparation and Work Plan $1500 l $l 500 <br /> 1 wells Permit-SJCEHD Well Install Permits $120 1 $120 <br /> 1 event Well Installation 4 new SVE&4 new AS Wells $10500 1 $10500 <br /> 1 report Well Installation Report $1500 1 $1500 <br /> Subtotal $16,620 <br /> SVEIAS System Installation Costs <br /> 1 event Permit-SJCAPCD-Perrmt to Operate $1000 1 $1000 <br /> 1 event Permit County&City Building Permit $1000 l $1000 <br /> 1 event Labor to obtain all permits $21100 1 $2,000 <br /> 1 event Labor for Engineering Design Plans $3000 1 $3000 <br /> 1 event Labor for Bid Package and Job Walk $2000 1 $2000 <br /> 1 event PG&E Temp Service Fee $20000 1 $20000 <br /> 1 event System Installation $70000 1 $70,000 <br /> 1 event Equipment Purchase $50000 1 $50000 <br /> 1 event System Start-up $5000 1 $5000 <br /> Subtotal $154,000 <br /> Annual System Operation Costs 10 SVE and 7 AS Wells <br /> • 3 years Operations and Maintenance $35000 3 $105000 <br /> 3 years Utility Charges for gas and power $15000 3 $45,000 <br /> 3 years Air Discharge Permit Fees $200 3 $600 <br /> Subtotal $150,600 <br /> CLOSURE COSTS <br /> 1 report Closure Report and Well Dest Work Plan $2500 1 $2500 <br /> 5 parcels Permit-SJCEHD Well Destruct Permits $100 5 $500 <br /> wells depth Wells to be Destroyed Feet <br /> 9 40 Groundwater Monitoring Wells $11 360 $3960 <br /> 1 70 Deep Groundwater Monitoring Well $11 70 $770 <br /> 10 30 Soil Vapor Extraction Wells $11 300 $3300 <br /> 7 45 Air Sparge Wells $11 315 $3,465 <br /> 1 event Disposal of well boxes and surface soil $400 1 $400 <br /> 4 days Field Oversight&Coordination $900 4 $3600 <br /> 1 report Well Destruction Summary Report $1000 l $1000 <br /> Subtotal $19,495 <br /> SVE/AS Remediation Costs $440,715 <br /> Tlus option will remove gasoline adsorbed to soil in the vadose zone <br /> Air sparging will remove gasoline dissolved in groundwater and adsorbed to soil in the saturated zone <br /> Air sparging will also enhance m-sttu destruction of gasoline be increasing the aerobic bacterial activity <br /> This option will not address the offsite migration of dissolved gasoline range petroleum hydrocarbons <br /> File RanchlTables\PAR Cost Est1RM-Remediation Matrix xls Page 2 of 4 <br />