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R10/71-51-IC <br /> TABLE 19C. COST ESTIMATE FOR PUMP AND TREAT <br /> WITH AIR STRIPPING (OPTION 713) <br /> -Capital Cost <br /> 1 Equipment and installation of Extraction Wells (four wells) <br /> and pump system $ 100,000 <br /> 2 One unit of air stripper (equipment and installation $ 72,000 <br /> Total = $ 170,000 <br /> Annual Maintenance (for first to fifth year) <br /> 1 Facility operator $ 50,000 <br /> 2 Supplies $ 6,000 <br /> 3 Repair $ 4,000 <br /> 4 Groundwater monitoring $ 150,000 <br /> Total $ 210,000 <br /> Present Worth Analysis <br /> Assumption i = 10% <br /> n = 5 <br /> A = $ 210,000 <br /> Present worth during first year, <br /> P = A (P/A, 10%, 5) <br /> P = (210,000) ( 3 7908) <br /> $ 796,068 <br /> Present Worth of Option 7A during 5-year period of_operation <br /> Capital cost +P = $ 966.000._ <br /> 41 <br />