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<br />" <br /> <br />0481 <br /> <br />Cost Estimates for Expanded Recharge Systems <br />The construction cost estimates for the diversion and distribution <br /> <br />systems required for recharge of the entire service area were <br />calculated based on a comparison of annual diversion requirements of <br />the expanded area with the test area. A direct proportion was assumed <br />so that a system require twice the annual diversion would cost twice <br />as much as the test area. <br /> <br />1 <br />, <br /> <br />Operation, maintenance, and replacemen~d\ expanded recharge systems <br />0'\ <br />was also calculated as proportiona~,tri 't;h~\~j1nual diversions. <br />'", . ", '~ <br />~..".. ,',':;' <br />(' , : . ';,) <br />Use of Existing Systems ('" /'/) <br /> <br />^ '/ <br />The existing distrib~t"ion systelJls' in the South Platte Basin could be <br />used to reCharg~~~ a~ui7/b: diverting and distributing water to <br />recharge ponds dU~~he early spring and fall months when excess <br />diversion capacity is available. In order to use the existing systems <br />for ground-water recharge, some additional turnouts and measurement <br />structures would need to be constructed and the operation and maintenance <br />programs would require extensive modification. <br /> <br />Operation and maintenance costs for the existing canals was estimated <br />on a cost per mile basis the same as the new canals in the test area. <br />The change in operation and maintenance costs due to use of the existing <br />canals for ground-water recharge was based on the number of days that <br />both the operation season would be extended and consequently the <br />maintenance season would be shortened. Shortening the time available <br />