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TABLE 6
<br /> COST COMPARISON OF FINAL REMEDIAL ALTERNATIVES
<br /> Former Countryside Market- 10848 Copperopolis Road
<br /> Stockton, California
<br /> PRESENT(2014)VALUE ANALYSIS-AIR SPARGING/BIOSPARGING
<br /> Routine RoutineMonitored Time
<br /> System Monitoring Site Closure Total
<br /> Pilot Site Operations Natural Value of
<br /> Year Permitting/ And and Well Total Cost Present
<br /> Testing Assessment and Attenuation/ Money at
<br /> Installation Maintenance Sampling/ Reporting Destructions 6'7o Value Cost
<br /> Reporting
<br /> 2014 0 $25,000 $250,000 $25,000 $25,000 $10,000 $0 $0 $335,000 1.000 $335,000
<br /> 2015 1 $0 $0 $10,000 $50,000 $20,000 $0 $0 $80,000 0.943 $75,472
<br /> 2016 2 $0 $0 $5,000 $50,000 $20,000 $0 $0 $75,000 0.890 $66,750
<br /> 2017 3 $0 $0 $5,000 $25,000 $10,000 $25,000 $0 $65,000 0.840 $54,575
<br /> 2018 4 $0 $0 $0 $0 $0 $10,000 $40,000 $50,000 0.792 $39,605
<br /> Total $25,000 $250,000 $45,000 $150,000 $60,000 $35,000 $40,000 $605,000 $571,401
<br /> PRESENT(2014)VALUE ANALYSIS-SPARGING WITH BIOVENTING
<br /> 2014 0 $30,000 $300,000 $30,000 $30,000 $10,000 $0 $0 $400,000 1.000 $400,000
<br /> 2015 1 $0 $0 $10,000 $55,000 $20,000 $0 $0 $85,000 0.943 $80,189
<br /> 2016 2 $0 $0 $5,000 $55,000 $20,000 $0 $0 $80,000 0.890 $71,200
<br /> 2017 3 $0 $0 $5,000 $30,000 $10,000 $25,000 $0 $70,000 0.840 $58,773
<br /> 2018 4 $0 $0 $0 $0 $0 $10,000 $50,000 $60,000 0.792 $47,526
<br /> Total $30,000 1 $300,000 1 $50,000 1 $170,000 1 $60,000 1 $35,000 1 $50,000 1 $695,000 1 $657,687
<br /> PRESENT(2014)VALUE ANALYSIS-SPARGING WITH SVE
<br /> 2014 0 $35,000 $400,000 $35,000 $45,000 $10,000 $0 $0 $525,000 1.000 $525,000
<br /> 2015 1 $0 $0 $10,000 $75,000 $20,000 $0 $0 $105,000 0.943 $99,057
<br /> 2016 2 $0 $0 $5,000 $75,000 $20,000 $0 $0 $100,000 0.890 $89,000
<br /> 2017 3 $0 $0 $5,000 $45,000 $10,000 $25,000 $0 $85,000 0.840 $71,368
<br /> 2018 4 $0 $0 $0 $0 $0 $10,000 $65,000 $75,000 0.792 $59,407
<br /> Total $35,000 $400,000 $55,000 $240,000 $60,000 $35,000 $65,000 $890,000 $843,831
<br /> Note: Price estimates are based on SGI's experience with similar systems.
<br /> Page 1 of 1 The Source Group,Inc.
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