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<br /> <br />Fuels Corporation at their on-going operations show <br />very steep hydraulic gradients, averaging 500 ft,/mi in <br />rocks overlying the Wadge coal, and very lox permea- <br />bility, Infloxs to their active pits is minimal, most <br />of which is used for dust control. Assuming underflows <br />in the alluvium underlying Foidel Creek near Energy <br />Fuels Pit 41 to be less than 50 gal/min, annual re- <br />charge to the ground-water system in this watershed <br />would be about one percent of precipitation. On that <br />basis, total ground-xater recharge on all three lease <br />areas would be about 50 acre-feet per year. <br />Confined conditions occur in sandstone beds that under- <br />lie the Wadge coal bed so that wells drilled at lower <br />elevations near the base of the dipslope surfaces com- <br />monly flow. Yields seldom exceed 10 gal/min and dimin- <br />ish within months to less than half the initial flow. <br />Alluvium and terrace deposits are thin within the pro- <br />posed lease tracts and are not regarded as potential <br />aquifers. <br />Water quality ranges widely from one well to another, <br />but in general shallow wells yield water that is <br />moderately hard with calcium and bicarbonate being the <br />dominant ions. Dissolved solids concentrations <br />generally average 500 to 1,000 mg/1 (milligrams per <br />40 <br />