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<br />Exhibit G -Water Resources <br />Surface Water <br />Mining is expected to have minimal impact on the prevailing hydrologic <br />balance. The surtace slope of the permit area is minimal to moderate, ranging from <br />only about two to 10 percent. Runoff from the affected area is limited to periods of <br />snow melt and summer storms and occurs as overland flow. A minor ephemeral <br />drainage passes through the permit area from northwest to southeast. However, the <br />drainage will not be mined and is not included in the area to be disturbed. The storm <br />water occurring on site will be intercepted by a pond as described below in a separate <br />section. <br />The area to be affected lies outside floodplain areas as illustrated on the <br />Exhibit C map. <br />Irrigation Ditches <br />No irrigation ditches occur on site. <br />Ground Water <br />As noted in Exhibit C, the operation is not expected to penetrate the water table. <br />Storm Water Control <br />Most of the storm water runoff from the disturbed portions of the area will flow to <br />a detention pond. Small local diversion ditches and or earthen berms will be field <br />engineered as required to route any unconfined surtace flow from disturbed areas to <br />the pond. The pond will be constructed primarily for sedimentation purposes but will <br />also provide storage for the total 100-year runoff from the disturbed areas. The pond <br />will be excavated below grade with a depth of about six to seven feet below the <br />adjacent natural ground surtace. The excavted material will be used to form a dam <br />raised about four feet or so above theadjacent natural ground surface. Any overflow <br />-11- <br />