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• . ~. <br />system in the Coalmont by the removal of the coal and its <br />overburden. After mining, the process will be returned to <br />equilibrium as the fill material in the mined area is <br />gradually recharged by rainfall and snowmelt. <br />Natural discharge from the Coalmont in North Park is <br />generally through springs and seeps issuing from outcrops. <br />There are no springs and seeps on the mine property or along <br />Mann Draw. The area is primarily a recharge area. <br />The Coalmont is not capable of yielding large quantities of <br />water to wells anywhere in North Park. Yields of wells are <br />generally less than 10 gpm. Low yield of the wells can be <br />attributed mainly to a lack of penetration of permeable zones <br />by the generally shallow wells. General properties o£ the <br />Coalmont as an aquifer indicate that to produce 80 gpm flow, <br />a Coalmont well would need to tap a thickness of 400 feet of <br />water-producing sandy zones. U.S. Geological Survey Open File <br />Report 77-887 presents geologic and electrical logs of 52 <br />holes into the Coalmont of Jackson County west of the Bourg <br />area. These logs indicate an average of 40 percent water- <br />producing zones out of the total well thickness indicating a <br />well would have to penetrate 1,000 feet of Coalmont to <br />produce 80 gpm. <br />Mining at the Bourg property began in July, 1980 under the <br />interim regulations. The mine operations are still in Stage <br />1, mining the Sudduth seam, as shown on Plate 5 of the <br />oiiginal application. The mine reports that no ground water <br />has flowed into the pit (August, 1981). This is further <br />indication of the low yield of that portion of the Coalmont <br />Formation. <br />Leonard Rice Coasulfing Waler Engineers, Iris. <br />I-39 <br />