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<br />Exploration Drilling - Dry Creek Underground <br />Introduction <br />The following describes the activities to be conducted within the Seneca 1)-Y permit <br />boundary in conjunction with the exploration plan for Dry Creek Underground Mine. The <br />drilling and seismic lines will be limited to Section 10, TSN, R88w, es shown on Figure <br />MR23-1, Seismic Line end Drill Hole Locations. <br />Drilling Program <br />There will be two core holes (395 feet and 35D feet) and one water monitoring well (350 <br />feet) drilled. The monitoring well will be completed in the 4adge coal formation. The <br />two core holes will be reclaimed upon completion of the project. the monitoring well will <br />be reclaimed in the future after it has served its intended purpose. <br />Access to the drilling locations will be afforded by light-use roads. The light use road <br />on the west side (approximately 500 feet Long) will be constructed in an area that was <br />used for access to Stockpile PP. The road has since been reclaimed. Redisturbance of the <br /> road will be kept to a minimum by "wind rowing" the topsoil from the road. A 50' x 50' <br />• drill pad will be constructed for the drill rig to set on to conduct the drilling, Eech <br /> drill pad disturbance will be reclaimed within a week or two after drilling operations are <br />completed; therefore, a temporary berm constructed on the down slope portion of each drill <br />site should be sufficient for sediment control. Should there be a delay in reclamation <br />activities, strew bales end/or other methods of sediment control will be undertaken. In <br />ell cases, drill pad disturbance will be kept to the minimum required for drill rig <br />access. Topsoil will be selvaged and stored towards the end of each drill site. Each <br />drill pad will be reclaimed within a week or two after drilling operations; therefore, no <br />temporary topsoil stabilization measures will be necessary. Should there be a delay in <br />reclamation activities, temporary stabilization measures, including seeding, will be <br />utilized. The disturbed area surrounding the monitor well will be regraded, topsoiled, <br />and seeded as stated in the Exploration/Reclamation Plan with no topsoil pile left <br />remaining. <br /> Existing jeep trails will be utilized to access the holes on the east side of the <br /> property. Peabody will not alter any existing roads to be used for access to the proposed <br /> drill sites. Vehicul ar travel will be held to the minimum needed to conduct the <br />• exploration program. A light use road will be constructed from the jeep trail to the <br />core/well location. Road length is approximately 7700' long x 20' wide. A 50' z 50' <br />12-7-1 Revised 05/24/93 <br />