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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 Ta* Cost Number of Estimated option <br /> Remediation Events Costs Cost Feasible9 <br /> Option 1 Soil Excavation and Disposal <br /> 15 years Monitoring and Sampling $20000 15 $300000 No <br /> Subtotal $300,000 <br /> Soil Excavation(30 feet by 40 feet and 30 feet deep) <br /> 1 report RBCATrer 11 with Groundwater Modeling $7000 1 $7000 <br /> 8 days Oversight $1000 8 $8000 <br /> 1 333 CY Excavation&Backfill(40 by 30 by 30) $20 1 333 $26667 <br /> 1 CY Shoring $100000 1 $100000 <br /> 1 733 CY Load and Haul Soil To Forward $15 173-3 $26000 <br /> 1 333 CY Landfill Fees $20 1 333 $26667 <br /> 1 report Summary Report $15000 1 $15000 <br /> Subtotal $209,333 <br /> CLOSURE COSTS <br /> I 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 /> 6 30 Sod Vapor Extraction Wells $11 180 $1 980 <br /> 1 45 Air Sparge Wells $11 45 $495 <br /> 1 event Disposal of well boxes and surface soil $400 1 $400 <br /> 3 days Field Oversight&Coordination $900 3 $2700 <br /> 1 report Well Destruction Summary Report $1000 1 $1000 <br /> Subtotal $14,305 <br /> Soil Excavation Remediation Costs $523,638 <br /> Costs associated with facility shut down and replacement and lost business have not been included <br /> Excavation will not address soil and groundwater impacted by lateral migration of gasoline <br /> Option 2 Passive Biodegradation <br /> 20 years Annual Monitoring and Sampling $20000 20 $400000 No <br /> I report RBCATter If with Groundwater Modeling $7000 1 $7,000 <br /> Site Closure Costs <br /> 1 event Same Closure Costs as listed in Option 1 $14305 1 $14305 <br /> $421,305 <br /> Doesn t address migration of dissolved MtBE Plume or the gasoline adsorbed to soil in the vadose zone <br /> Option may be feasible at end of active remediation <br /> Option 3 In-situ Biologic and/or Chemical Treatment <br /> 15 years Annual Monitoring and Sampling $20000 15 $300000 No <br /> I report RBCATrer 11 with Groundwater Modeling $7000 1 $7000 <br /> 10 events Injection Treatments $20000 10 $200000 <br /> CLOSURE COSTS <br /> 1 event Same Closure Costs as listed in Option 1 $14305 1 $14305 <br /> $507,000 <br /> Doesn t address the gasoline adsorbed to soil in the vadose zone <br /> Option may be feasible at end of active remediation <br /> File Ranch\TableslPAR Cost Est1RM Remediation Matrix xis Page 1 of 4 <br />