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The annual gross evaporation was distributed over the year as specified in the state's <br />guidelines. The precipitation at the site was taken as the monthly averages reported for the <br />Gunnison climatological station. Those values averaged 10.5 inches for the year. The <br />precipitation was reduced to reflect an effectiveness of 70 percent. The difference between the <br />evaporation and the effective precipitation is the net evaporation of 2.36 feet. That value was <br />taken times the ultimately exposed ground water of 39.62 acres. This net evaporation loss to the <br />stream is 93.44 a-f per year. The month]y components of this annual figure aze presented in <br />Table 1. <br />TABLE 1 <br />NET EVAPORATION FROM SEAHORSE RANCH WEST GRAVEL PIT <br />(39.62 acres) <br />ONTH JA FEB MA AP MA J JU AU SE OC NO DE <br />OF ANN 3 3.5 5.5 1 14.5 15 13.5 1 3 100 <br />GROSS, IN ].0 1.25 1.9 3.21 4.2 5.1 5.35 4.81 3.5 2.5 1.43 1.0 35.65 <br />PRECIP, IN 0.9 0.7 0.7 0.68 0.7 0.63 1.4 1.51 0.95 0.73 0.6 0.81 10.50 <br />EFF PRECIP, 0.63 0.5 0.5 0.48 0.5 0.4 0.9 1.0 0.6 0.51 0.4 0.5 7.35 <br />NET EVAP, IN 0.4 0.71 1.4 2.73 3.7 4.73 4.3 3.75 2.9 1.9 0.9 0.51 28.30 <br />PITEVAP AF ].45 2.33 4.81 9.03 12.4 15.61 ]4.43 12.4 9.5 6.5 3.1 ].6 93.44 <br />Minine <br />Sand and gravel is mined from SRWGP after the pit is dewatered. VCI estimates that <br />100,000 tons of material will be mined each year. The water removed with the mined material is <br />estimated as four percent by weight. Using this factor, the water contained in the product is 2.94 <br />x 10.5 a-f per ton. Therefore, the water removed in the projected mined product is 2.9 a-f per <br />yeaz. The monthly components of this annual figure are presented in Table 2. <br />Dust Control <br />Dust control will be required during the mining phase. VCI estimates that 1,000 gallons <br />per day will be required. This is an annual demand of 1.12 a-f. The monthly components of this <br />4 <br />