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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 azea and time of dewatering aze <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 aze 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 110 to 601 gpm. <br />The geology of the Eastern Mining District is similaz to the previously permitted azeas. 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 />The Eastem Mining District area sedimentary strata are not disturbed by any significant faults. The stmctural <br />and lithologic characteristics of the permit area aze depicted on Geologic Cross Sections B-B' (east-west) and D- <br />D' (north-south), Figures 1B and lA, respectively. These figures are considered confidential. <br />EMD (Panels 2-Right through 6-Right, PR97-04) <br />The mine inflow predictions were generated using a different methodology than was used for the EMD. The <br />• discussion and calculations are presented in Section 2.05 of this application. The methodology used aminor- <br />well technique, which should be adequate for predicting inflows into the mine. <br />NORTFI MINING DISTRICT (PR99-OS and PR06-07) <br />The mine inflow predictions were generated using a different methodology than was used for the EMD. The <br />discussion and calculations are presented in Section 2.05 of this application. The methodology used aminor- <br />well technique, which should be adequate for predicting inflows into the mine. <br />NMD (Panels 17-Right through 25-Right, PR03-06 and PR06-07) <br />The mine inflow predictions were generated using a different methodology than was used for the EMD. The <br />discussion and calculations are presented in Section 2.05.6(3) of this application. The methodology used a <br />minor-well technique, which should be adequate for predicting inflows into the mine. <br />WEST MINING DISTRICT (R'MD, Panels 12-Left through 17-Left, PR06-07) <br />Because it falls within the Twentymile Park Basin, the geology of the WMD is similaz to the previously <br />pemutted areas. The Twentymile Park synclinal axis, oriented NE-SW, is the northern boundary of the WMD, <br />the area is bounded on the east by one of the primary faults (orient NNW to SSE), the western boundary is the <br />Tow Creek Anticline and Hayden Syncline, and the SMD lies along the southern limit of the area. General <br />surface geology and coal seam structure for all mine areas aze shown on Maps 5, and 6 (Confidential), <br />respectively. With the exception of the primary fault that extends through the eastern portion of the WMD, the <br />WMD sedimentary strata are not disturbed by any significant faults. The structural and lithologic characteristics <br />of the permit area are depicted on Geologic Cross Sections B-B' and E-E' (both east-west, Maps 8 and 9A, <br />• Confidential). <br />PR06-07 2.04-I1 11/07/06 <br />