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<br />(w <br /> <br />~ as in EL-3. Accuracy of deep percolation losses would be about plus or minus 10 <br />~ <br /> <br />c: <br /> <br />percent. <br /> <br />Cost Estimates for Equipment <br /> <br />Equipment needs were developed separately for the Grand Valley and Uinta Basin <br /> <br />because of the different proportion of irrigation methods in each area. <br /> <br />Presently, the predominant method of irrigation and the most common methods in <br /> <br />Uinta are semi-controlled flooding and sprinkler. The difference is reflected in <br /> <br />the cost in Table 2 in the Appendix beginning on page 59. This table also <br /> <br />provides a summary of the cost for each area for each equipment level. <br /> <br />Equipment needs were developed for three levels of sampling. As the number of <br /> <br />teams and sites were increased; equipment needs were increased proportionally. <br /> <br />Total Onfarm Irrigation Monitoring Cost <br /> <br />An array of alternative costs have been developed for mJnitoring onfarm <br /> <br />irrigation. This array consists of 3 levels of sampling with 4 levels of <br /> <br />equipment to achieve varying levels of accuracy for estimating deep percolation. <br /> <br />The arrays are shown in Table 3 on page 69. <br /> <br />Sampling Level 2, with an Equipment Level 4, is recommended for implementation. <br /> <br />This has a start up cost of $455,200 and an annual recurring cost of $92,400. <br /> <br />This alternative was selected because it provides a moderate staffing level with <br /> <br />a high degree of data accuracy. <br /> <br />33 <br />