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q = KMs (7c / at)' /2 <br />Where: q is water inflow per a longitudinal section of an underground mine (m3 /day) <br />K is hydraulic conductivity (m /day) <br />M is hydrostatic head (m) <br />s is drawdown <br />a is coefficient of piezoconductivity (m2 /day) <br />a = T/S where T is transmissivity (m2 /day) and S is storativity <br />t is time of dewatering days <br />The total inflow per (longwall panel) section of the mine or level is then calculated from: <br />Q =qx1 <br />Where: 1 is length of dewatered section (m) <br />The total horizontal inflow per ( longwall panel) section of the mine or level was calculated using hydraulic <br />conductivity ranging from 0.034 to 0.098 ft/day. The geometry of the mined area and time of dewatering are <br />based on mining plans. The analytical equation presented above was input into a simple spreadsheet computer <br />program (LOTUS 123) on an IBM computer. The results of the inflow calculations for the Eastern Mining <br />District are summarized and presented in Tables 3 and 4 of Exhibit 9A. The average inflow in one panel could <br />range from 65 to 230 gpm and the total inflow in the Eastern Mining District could range from l 10 to 601 gpm. <br />The geology of the Eastern Mining District is similar to the previously permitted areas. A syncline axis, <br />oriented northwest- southeast is located in the central section of the mined area. The southeastern edge of the <br />proposed mining is defined by a split in the Wadge Coal Seam. Additional exploration boreholes will be drilled <br />in this area to better define the coal seam composition. <br />RN 12 -06 2.04 -10 04/01/13 <br />