Laserfiche WebLink
1 • *Banks and Gesso, LLC <br /> t <br /> Mr. Hal Simpson <br /> December 19, 1999 <br /> Page 2 <br /> ' In the past, irrigation on the property was by flood irrigation methods using the 2.25 <br /> shares owned in the Lupton Bottom Ditch. Table 1 shows the estimated evaporation <br /> loss on a monthly basis. <br /> ' The proposed operation will mine approximately 300,000 tons of product for the first <br /> year and approximately 500,000 tons of product the second year of operation. The <br /> operation is estimated to expose 5.25 surface acres in the first year and 7.7 acres the <br /> second year. Table 2,shows the monthly distribution of mined product. <br /> Approximately 4.5 ac*ft/y of water will be used for dust suppression. The monthly <br /> ' distribution of evaporation loss is also shown on Table 2. Total evaporation depletion <br /> from product is 9.03 ac*ft/y for the first year and 14.75 ac*ft/y the next year. The <br /> total annual depletions is 29.26 ac*ft/y and 42.3 ac*ft/y respectively, which includes <br /> the water from dust suppression. Since the pit will not be lined until the second year <br /> into the operation, we will replace depletions on a monthly basis as incurred. <br /> 5. L.G. Everist, Inc. plans to mine approximately 300,000 tons the first year of operation <br /> and 500,000 tons per year until completion. The water surface exposed to the <br /> atmosphere will consist of a recharge pond, the mined pit and a dewatering trench, to <br /> ' be located in the SEI/4 of the property, approximately 800 feet from the South Platte <br /> River in Section 30, T2N, R66W. <br /> ' The exposed water surface consists of the following: <br /> Year 1: <br /> Exposed from mining 3.25 acres <br /> Dewatering trench 1.00 acres <br /> Recharge pond 1.00 acres <br /> Total 5.25 acres <br /> Year 2: <br /> Exposed from mining 5.69 acres <br /> Dewatering trench 1.00 acres <br /> ' Recharge pond 1.00 acres <br /> Total 7.69 acres <br /> 6. The timing of lagged depletions and lagged recharge for the Ft. Lupton Sand and <br /> Gravel Mine were calculated using the Glover Analysis Method and is enclosed. <br /> 7. No phreatophyte credit is being claimed. <br /> Ft. Lupton Sand and Gravel Mine, SSP 2 99024 WD <br /> ' L.G. Everist, Inc. December 19, 1999 <br />