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<br />EXHIBIT G - l-LATER INFORMATION <br />The aquifer system at the D. A. Shale/Callahan property is a two aquifer <br />system separated by the impermeable Mahogany Zone. This system is composed of <br />an upper aquifer extending down from the "broken or fractured zone" to the top <br />of the Mahogany Zone a'distance of 250 feet. The lower aquifer is in the bottom <br />30 feet of the Pahogany Zone and extends down below the lean B-groove at the base <br />_. of the Pahogany Zone, a distance of 50 feet. <br />Due to. the small amount of water in the groundwater system and hence the <br />small amount of excess water at Logan Wash after mining uses, this excess is <br />evaporated by spraying over the raw shale dump. Also, alluvial monitoring wells <br />are located below the dump to check if any of the sprayed water does not evapor- <br />ate and reaches the alluvium. <br />The estimated water requirements for the D.A. Shale project are approximately <br />4-5 gpm for development and mining. This need usually is met by the groundwater <br />in storage, but in dry years as was 1977, this need is augmented by the purchase <br />of water from individuals who have more senior water rights in the area. <br />Due to the low water requirements of the Logan flash plant, all water re- <br />quirements for the operations and mining have been fulfilled by groundwater in <br />storage. If this requirement increases, water will be purchased from sources with <br />more senior water rights in the area. <br />A NPDES permit has been issued (#CO-0029947) for the Logan hash site by the <br />lJater Quality Control Division of the Colorado Department of Health. <br />Being a small development operation, there will not be a measurable material <br />injury to any senior water rights in the Logan Wash area. <br />