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• <br />• <br />Introduction <br />Summary of Water Information <br />• The proposed mining operation will have some affect on sur- <br /> face and ground water systems, but all such effects are neg- <br /> ligible and in conformance with applicable law. There are <br /> four potential areas of concern in terms of possible ground <br />• water effects caused by the mining operation; consumptive <br /> use of water during mining for operating the crusher and for <br /> dust suppression; water for revegetation and the proposed <br /> afteruse; and surface drainage (historic and proposed);~an? pollution <br />• Attached are reports giving more complete information on <br /> water for mining, water for revegetation and afteruse, drain- <br /> age, and other related items. In addition, a general dis- <br /> cussion of water resources is included in this section. <br />• Existing Water Resources and Conditions <br /> Sandy Acres is located 1 mile east of the South Platte River. <br /> There are no wells, dams, reservoirs, or natural waterways on <br />• the property. Two small irrigation ditches cross this proper- <br /> <br /> ty; one on the south which serves this property, and one along <br /> 132nd on the north edge which serves the property to the north. <br /> Both ditches will not be disturbed by mining. <br />• There are several sources of water in the area. First, there <br /> is immediate sub-surface water which is considered tributary <br /> to the South Platte River system. According to the soil cores <br /> this water was encountered approximately 20 feet below the sur- <br />• face. Substantially deeper under the property are two non- <br /> tributary bedrock aquifers. Water availability from these aqui- <br /> fers is governed by provisions of SH213(1973). This law limits <br /> the amount of water that can be withdrawn from either aquifer <br />• to 1% of the water stored in the aquifer underlying the surface <br /> land. Water availability is determined by the formula "area times <br /> saturated thickness times specific yield divided by 100 years". <br /> Available water is also reduced if pre-1973 wells have already <br />• appropriated water underlying the property. <br /> The property is presently farmed using alluvial adjudicated <br /> water supplied from the Fulton Ditch and an adjacent irrigation <br /> well. This farming will continue until mining commencies and <br />• during mining on unexcavated property. <br />• <br />• <br />