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<br />Effective precipitation was determined in order to compute the net lake evaporation. Effective <br />precipitation was computed as 70% of the total precipitation. Effective precipitation was then <br />subtracted from the gross evaporation to obtain the net evaporation. The net annual evaporation <br />from a lake surface at the subject site is 2.8 ft. The resulting net annual evaporation consumptive <br />use during the mining operations is 7.5 acre-ft. The evaporation associated with the post <br />reclamation lakes will be approximately 155.4 ac-ft/yeaz. <br />There will be excavation and stockpiling of mined material on site. The water contained in the <br />material when mined is considered as consumptive use and must be accounted for. The operator <br />anticipates that 300,000 tons of material will be mined and washed from the amended azea <br />annually. Assuming a 4% moisture content by weight, as suggested by the State Engineers <br />Office, the depletion would total 8.8 acre-feet per year. <br />Water use at the site also includes water used for dust control. This will include water applied to <br />haul roads and stock piles. It is estimated that dust control will consist of two loads from a 3000 <br />gallon capacity water truck twice a day (Monday through Friday) for nine months. These <br />estimates result in a consumptive use of 1.8 ac-ft/yeaz. <br />Water will also be used in the batching of concrete on the plant. It is estimated that <br />approximately two million gallons of water will be used in the hatching of concrete. This results <br />in a annual consumptive use of 6.1 ac-ft. This consumptive use was spread over the nine months <br />which concrete would be produced in. <br />The total consumptive use associated with the mining operations aze as follows: <br />Evaporation 7.5 acre-feet <br />Moisture Retained in Produc[ 8.8 acre-feet <br />Dust Control 1.8 acre-feet <br />Water Used in Concrete Production 6.1 acre-feet <br /> <br />Total 24.2 acre-feet <br />Table No. 1 gives a detailed breakdown of the augmentation requirements during the mining <br />operations. Table No. 2 gives a breakdown of the requirements after reclamation is complete. <br />These tables aze included at the end of this exhibit. <br />G-2 <br />