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Effective precipitation was determined in order to compute the net surface water evaporation. <br />Effective precipitation was computed as 70% of the total precipitation (10.29). Effective <br />precipitation was then subtracted from the gross evaporation to obtain the net evaporation. <br />An adjustment is also made for the months of January and February when the water surface is <br />typically frozen. The net annual evaporation from surface water at the subject site is 2.26 ft <br />27.1 inches). Consequently the net annual evaporation during mining from 0.3 acres of surface <br />water will be .67 acre-feet. <br />The most material Connell will mine in a yeaz is projected at 250,000 tons. Assuming a 4 <br />moisture content by weight, this would equate to about 7.35 acre-feet annually. <br />Water also includes water applied for dust control. The quantity of water needed for dust control <br />during mining should be about .8 acre-feet per annually. <br />Table G-1 summarizes annual consumptive. <br />Table G-1 Annual Consumptive Use (acre-ft) <br />Evaporation .67 <br />oisture etune m aten <br />Dust Contro .8 <br />T TA 2 <br />Augmentation <br />In order to prevent injury of senior water rights along the Cache La Poudre River, augmentation <br />of the out of priority depletions at the site is required. During mining of the Wellington Downs <br />site it is estimated that approximately 8.82 acre-feet of groundwater will be consumed each yeaz. <br />The Wellington Downs operation is not expected to exceed the current water uses at the Stute <br />Pit because it will be a similar operation. <br />Connell is entitled to use any water rights of the Lessor necessary for Connell's operation on the <br />Wellington Downs Property. <br />Connell will obtain a temporary Substitute Water Supply Plan from the Slate Engineer's Office <br />(SEO) allow them to consume water during the mining phase of the operation (as well as a Well <br />Permit). <br />As stated earlier the final reclamation of the site is a water storage reservoir. The reservoir will <br />be sealed from the surrounding alluvial aquifer to prevent groundwater infiltration. Consequently <br />there will be no long term augmentation responsibilities. The Lessor shall be responsible <br />operation of the reservoir and for any leasing of water storage rights. <br />