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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~or operating the crusher and for <br />dust suppression; water for revegetation and the proposed <br />afteruse; and surface drainage (historic and proposed);'ana 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 />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 SB213(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 the amount of water that can be withdrawn from either aquifer 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 />I• <br />• <br />