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is finished for the designated amount of time, pumping will cease and the pit will be allowed to fill <br />with water, thus maintaining the natural ground water level. <br />The gravel will be mined using a dozer and front end loader. Raw product stockpiles will be created <br />in the pit and a loader will load the raw gravel into trucks which will enter a ramp out of the pit and <br />then travel over the bridge to Western's processing facilities. Topsoil and overburden will be <br />stockpiled as shown on Map C-2. It is expected that the overburden thickness will average 6 feet <br />thickness over the azea to be mined. Overburden may also be sold as select fill. The deposit will be <br />mined to its final slope of 2H:1 V leaving a 15' wide portion of 3H:1 V slope neaz the expected water <br />level when the lake is created. Slopes between five feet above and ten feet below the water table <br />will be mined to grades no steeper than 3H:1 V. <br />The total pit excavation azea is 24.6 acres. The total disturbed azea is 31.4 acres. <br />It is anticipated that there will be two phases of the operation as follows: <br />Phase 1 - 12.6 +/-ac. This was begun in 1996 and may last 5 to 7 years, depending on production. <br />Reclamation of this Phase is to begin upon commencement of operations in Phase 2. The topsoil <br />from Phase 2 will be placed in the Phase 1 area from 5 feet below waterline to the top of the <br />excavation. <br />Phase 2 -12.0 +/-ac. To be mined over a period estimated to be about 5 to 8 years. Reclamation of <br />Phase 1 will commence upon completion of operations. <br />In order to allow for the water discharge, an NPDES stormwater/process water dischazge pennit has <br />been applied for with the Colorado Department of Public Health and Environment. Also, a water <br />decree has been issued to utilize irrigation water for the expected evaporation from the site. See <br />Exhibit G -Water Infonnation for details. An augmentation pond is necessary to avoid the purchase <br />of water. This pond has approximately 1.0 acres of surface azea and is located northeast of the <br />mining azea. This pond will remain after mining. It is fed from the irrigation ditch which enters the <br />area from the south, as shown on Map C-2. <br />North R-34 Pit 4/07 7 <br />