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5. The City would be reliant on a single groundwater source. <br /> <br />Estimated Capital and Long Term O&M Costs <br />Estimated capital and long term O&M costs were based on present worth analysis. The <br />total estimated cost for Option 5, including contingency and indirect costs, are shown in <br />Table 4 along with the estimated O&M costs over a 20-year life cycle. A detailed cost <br />estimate for Option 5 can be found in Appendix D. <br /> <br />Table 4: Option 5 Estimated Costs <br />Estimated <br />Capital Cost <br /> <br />Finance <br />Cost (4% <br />Interest) <br />Estimated <br />O&M Cost <br />(3.5% Interest <br />Rate) <br />20-Year Cost <br />of <br />Purchasing/ <br />Producing <br />Water <br />Total 20-Year Cost <br />$7,177,600 $3,385,200 $1,080,200 $4,954,000 $16,597,000 <br /> <br />72