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<br />, <br /> <br />f-l. <br />Co") ~. <br />en <br />(D <br /> <br />for ponds at the Public service Company of New Mexico San Juan <br />Generating station. <br /> <br /> <br />Totals for salt removal over a 20-year period using reverse <br />osmosis treatment are outlined as follows: <br /> <br />construction <br />Surge storage reservoir <br />Gravity filtration system <br />Reve~se osmosis unit <br />Brine Pond <br /> <br /> <br />$ <br /> <br />121,000 <br />354,347 <br />429,172 <br />920,000 <br /> <br />Total January 1991 cost $ 1,824,519 <br /> <br />Operation and Maintenance <br />Gravity filtration system <br />Reverse osmosis system <br /> <br />$ <br /> <br />122,935 <br />86,475 <br /> <br />Annual 0 & M cost <br />Twenty-year cost <br /> <br />$ 209,475 <br />$ 4,189,500 <br /> <br />Total estimated 20-year <br />cost <br /> <br />$ 6.014,019 <br /> <br />'(! <br />, /,/.,ty\~ <br />... '...../ ~ "",f <br />'. . ( ... <br />In order to est~mate an annual~zed payment for the treatment <br /> <br />system, an interest rate of 10 perce~_t~is assumed over 20 payment <br />,------ ~, ,----- <br />periods, The annual payment for the system is $214,308 plus an <br />operation and maintenance expense of $209,475, producing an <br />annual cost of $423,783, When compared with the salt removal of <br />211 tons per year (1154 lbs per day), the cost per ton of salt <br />removed becomes $2008, <br /> <br />14 <br /> <br />1 <br />. <br /> <br />'~ <br /> <br />,--i ,.'" .;_}' <br /> <br />