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WATER INFORMATION <br />according to the property owner. This is further discussed in Exhibit S -Permanent Man- <br />made Structures. <br />Permit # Owner Comments <br />67957 Detta Helmsing will be moved <br />14393R!686R <br />N Virginia Nelson only one well exists <br />106501A Joseph Tilley Jr. <br />90000 Helen Joan <br />Prijatel appears to be <br />abandoned <br />6609R Roy and Ann <br />Martin <br />ee x i it - or we ocations <br />The existence of these nearby wells was a factor that spurred the implementation of a <br />ground water monitoring program in the permit area. The goal of the monitoring program is to <br />observe and evaluate ground water conditions in the alluvial aquifer and to assess if the mining <br />activities will affect the existing production wells in the area. <br />The monitoring program was implemented by installing 16 monitoring wells on the <br />permitted lands, as shown on Exhibit C-3. Fourteen of the wells are constructed with 2-inch <br />diameter PVC and two of the wells are constructed with 4-inch PVC. The two larger wells were <br />designed such that pump tests could be conducted to determine the local aquifer characteristics for <br />the purpose of building a ground water flow model for the area. Each of the wells completely <br />penetrate the alluvium and were drilled until the borehole reached the shale bedrock unit. The well <br />depths range from 28 to 47 feet and average about 37 feet. The water levels measured at the time of <br />the drilling program range from approximately 8 to 29 feet below the ground surface and average <br />about 14 feet. Accordingly, the average saturated thickness of the aquifer at the monitor well <br />locations is 23 feet. (This thickness determined with the monitoring wells is very close to the <br />average thickness of the gravel layer as determined by other, independent analysis.) <br />The ground water monitoring program consists of measuring water levels in the wells on a <br />monthly basis. The water level data will be maintained in a database such that trends can be <br />observed. Mining activities and changes in ground water levels can then be considered in <br />conjunction with one another to further understand if any impacts may azise from the mining <br />operation. <br />The water use requirements for the mining operation are divided into two categories: <br />physical demand for process water and depletion to the stream system. As described in Exhibit D, <br />Pueblo East Pit Amendment Exhibit K Page 2 <br />