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—�- -Present Wortti - <br /> • Groundwater Monitoring $23,561 <br /> ($4,100)(5 7466) <br /> • Operation and Maintenance <br /> Year 1 ($40,000)( 9259) $37,036 <br /> Year 2 ($10,000)( 8573) $8,573 <br /> Year 3 ($10,000)( 7938) $7,938 <br /> • Utility Costs <br /> Year 1 ($30,000)( 9259) $27,777 <br /> Year 2 ($2,000)( 8573) $1,715 <br /> Year 3 ($2,000)( 793 8) $1,588 <br /> Present Worth Subtotal $108,188 <br /> Annual Costs <br /> ALTERNATIVE 1 TOTAL $693.688 <br /> Alternative 2: Soil Vapor Extraction/Bioventing and Air Sparging <br /> • Assumptions/Conditions <br /> 1 Assumptions 1 through 3 from Alternative 1 are valid <br /> 2 The groundwater monitoring effort is expected to be extended by approximately <br /> 5 years beyond that of Alternative 1 in order to provide the requisite time for <br /> active site remediation Therefore, the total time for groundwater monitoring at <br /> the site until water quality goals can be attained at Well MW-13 was calculated to <br /> be 8 years <br /> 3 The project lifespan of continuous soil vapor extraction (SVE) utihzsng an internal <br /> combustion engine both as a vacuum source and a vapor abatement source is <br /> 6 months The lifespan of low flow, pulsed bioventmg is 2 years <br /> Capital <br /> • System Design and Remediation $30,000 <br /> Permitting (Both SVE and Air Sparging) <br /> • System Construction, Installation, $80,000 <br /> and Permitting (Both) <br /> 3201337BICAP AMD DOC D - 3 November 30, 1995 <br />