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<br />MAY Iq82 <br /> <br />This report describes six candidate plans that address four concepts <br /> <br />for reducing the river's salt load. These concepts are: a continuation of <br /> <br />ongoing programs (no accelerated action alternative), onfarm irrigation <br /> <br />water management (non-structural alternative), ditch lining only, and <br /> <br />combining onfarm irrigation water management with ditch lining. <br /> <br />Plan 5 is recommended for implementation. The implementation period <br /> <br />should be six years and program effectiveness should be evaluated at <br /> <br />three-year intervals to determine if the program is achieving the expected <br /> <br />degree of salinity reduction. <br /> <br />TABLE 1-3 ESTIMATED QUANTITIES AND COST FOR <br />IMPLEMENTING THE RECOMMENDED PLN, <br />McELMO CREEK SALINITY CONTROL STUDY, COLORADO <br /> <br />Item <br /> <br />Units Quantities Cost <br />mi. 235 6,136,000 <br />mi. 33 893,000 <br />ea. 400 408,000 <br />ac. 10 , 00 0 8,101,000 <br />ac. 9,300 7,784,000 <br />$ 23,322,000 <br /> <br />Pipeline: <br />Group Ditches <br />OnFarm Ditches <br />Measuring Devices <br />Sprinkler Systems <br />Gravity Pressure <br />Pumped Pressure <br /> <br />TOTAL COST <br /> <br />Implementation of Plan 5 will reduce salt loading in the Colorado River <br /> <br />by 32,000 tons per year. The total installation cost is estimated to be <br /> <br />$27,986,000. It is recommended that the federal government share the <br /> <br />construction cost at a rate not greater than 75 percent. At 75 percent <br /> <br />cost-share the cost to the federal government is $22,154,000 over the <br /> <br />six-year implementation period, consisting of $17,490,000 for construction <br /> <br />and $4,664,000 for administrative and technical assistance. Annual levels <br /> <br />of funding needed throughout the implementation period are shown- in Table <br /> <br />1-4. The total cost to the local people is estimated to be $5,830,500 for <br /> <br />construction and $184,300 per year for operation, maintenance and <br /> <br />replacement following program implementation. <br /> <br />1-5 <br /> <br />Ct"'18"? <br />.' l . ..... <br />