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In excess of 95 well sites were visited. Currently, there are 95 actively monitored wells in the <br />monitoring network as depicted on the map following the narrative. <br />The aquifer designations used on the following hydrographs, data sheets and figures are <br />described in the following Table 1. <br />Table 1 - AQuifeC Descrio ion <br />Symbol Name <br />Qal Alluvium <br />To Ogallala aquifer <br />Kd Dakota aquifer <br />Kc <br />Kdp <br />TRd <br />Avg. Sat. <br />Thickness' <br />0-60 <br />*<50 <br />* < 125 <br />Cheyenne aquifer * < 100 <br />Dakota -Cheyenne - <br />Total <br />Thickness <br />0.100 ft. <br />0-200 ft. <br />80-150 ft. <br />40-250 ft. <br />Dockum aquifer 300** (est'd) 0-570(?) ft. <br />'Arithmetic average of monitored wells. "estimated -thickness including Entrada ss. <br />*< = slightly less than <br />*> = slightly greater than <br />2 <br />Descri to ion <br />Unconsolidated sands <br />and gravels <br />Sand, gravel, silt, clay <br />and limestone <br />Fine grained, thin to <br />massive sandstone with <br />clayey to sandy shales, <br />light to dark brown <br />Fine grained, massive <br />light-colored sandstone <br />Aquifer unit by virtue of <br />Completion in Dakota and <br />Cheyenne sandstones with <br />absence of intervening <br />Kiowa shale <br />Red siltstone, shales, <br />limestones, and red to buff, <br />fine to coarse sandstone <br />