2003-06-13_REVISION - M2000049 - Laserfiche WebLink

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6.4.7 EXHIBIT G -Water Information The small azeal disturbance and shallow excavation created by this gravel pit will not directly affect surface or ground water systems. The open, un-reclaimed pit area will not exceed 10 acres at any time during the mining operation. The pit is not located within a natural drainage system. The pit is expected to encounter an underground aquifer. This aquifer is the sandstone which underlies the gravel deposit and may extend into the gravel bed itself. The perennial level of this ground water is unknown. The operator will not interfere with the aquifer, taking Gaze to adjust the projected horizon of mining to leave a minimum of 2 feet of undisturbed material above the ground water when it is encountered. A berm along the exposed gravel outcrop at the west end of the Phase II pit will contain within the pit the runoff of precipitation events. The porous nature of the soils in this azea and the gentle slope of the pit development will allow the runoff created by brief periods of spring snow melts and summer rains to infiltrate into the ground surface. No additional measures will be required to control surface flow. No sedimentation pond is designed or anticipated. Therefore, the Operator/Applicant has not applied for a National Pollutant Discharge Elimination System permit from the Water Quality Control Division of the Colorado Departrnent of Health. The washing of sand and gravel is anticipated as demand dictates. Water will be obtained from a non jurisdictional dam that will collect waste irrigation return flow. The waste irrigation water will be pumped from the small reservoir located in the field north of the Phase III mining area to a small pond in the Phase I pit area. This pond will be located in the southeast corner of the pit. Water will re-circulate through the pond so the majority of the consumptive use will be the increase in moisture content in the product washed. The Operator is working with the State Engineers Office to confirm it has the right to utilize the waste irrigation water. Until confirmation is received, [he Ogerator will purchase water from off site sources for use in its mining and washing operations. The small reservoir will be located on the bottom of the pit floor which consists of clay. This clay pit floor will isolate the reservoir from any adjacent ground water sources. The clay was tested by Lambert and Associates. The remolded permeability test results showed a permeability of 1.3 x 10-7 cm/sec which is virtually impervious. Dr. Michael DeJohn, the owner of record of all lands included within the permit boundary, holds "all water and water rights, ditches and ditch rights, minerals and mineral rights appurtenant thereto or used in connection therewith including but not limited to 125 shares of The Farmers Water Development Company."Z 'Taken from the QUTT CLAIM DEED dated January 7, 2000 between Esther Ellen Kelley and Tom Friedas Kelly and Blackburn Ranches, a partnership as grantor(s), and Michael DeJohn, included in Exhibit N -Source of Legal Right to Enter. G-1