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Boreholes Drilled <br />Total New Pad <br />Disturbance <br />Total Net New <br />road <br />Construction <br />Panel 17 <br />0.5 acres <br />0 feet <br />Panel 18 <br />2.5 acres <br />730 feet <br />Panel 19 <br />3.0 acre <br />1,090 feet <br />LW- 18 -03B is a new vertical borehole site with 370' of new road. <br />Formerly approved LW- 18 -04, B, C was not built and new LW- 18 -04B is a new site located <br />along an existing road. 800' less road building. <br />LW- 18 -04C is a new vertical borehole site plus 180' of new road. <br />Old LW -18 -05 was not built and LW -18 -05 is moved to a new site plus an 05B directional <br />borehole plus 340' of new road. <br />Panel 19 <br />None of the Panel LW -19 GVB borehole pads were built and are still in the "proposed" status. <br />Pilot hole 19-01A was drilled, but the formerly approved LW-19-01B or 01C will not be needed <br />in this location. The site can now be reclaimed. <br />Pilot hole 19 -03 was drilled but no longer needed as a GVB. It will be reclaimed. <br />LW -19 -02 is a new vertical borehole with 300' of new road. <br />LW- 19 -02B is a new vertical borehole with 600' of road. <br />LW- 19 -03B is a new vertical borehole located with 190' of new road. <br />LW -19 -04 is a new vertical borehole. (No net new road). <br />LW- 19 -04B is a new vertical borehole (No net new road). <br />LW -19 -05 is a new vertical borehole (No net new road). <br />Please see the map 2.04 -M1, Sheet 6 of 6 for the new configuration of Panel 19 boreholes. <br />Modification to Longwall Panel 17, 18 and 19 GVB Program — Private Surface <br />• Page 3 <br />ota <br />6.0 acres <br />1,820 feet (0.7ac.) <br />Total additional drill pad disturbance is 6.0 acres and temporary road disturbance is 0.7 acres for <br />a total of 6.7 acres of additional temporary disturbance. A modified Table 2.05.4 -T1, Surface <br />Disturbance Summary on PAP page 2.05 -50a is attached herein. <br />Each borehole will be drilled 12 1/4 inch diameter to approximately 20 feet above the coal. 9 5/8 <br />inch steel casing is cemented into the hole to approximately within 100' of the coal. 7 inch <br />slotted steel casing will be installed to within 10 feet above the coal. Approximately 60 - 100 <br />feet of the slotted 7 inch pipe will be extended up or overlap into the 9 5/8 inch casing. <br />Drainage and Sediment Control <br />The drainage and sediment control system for these Elk Creek mine gob vent boreholes will be <br />consistent with the previously constructed Elk Creek Mine and Sanborn Creek Mine gob vent <br />boreholes. The drainage and sediment control for the Elk Creek Mine borehole sites will be <br />managed as a small area exemption with alternative sediment control provided by a combination <br />