2008-01-11_PERMIT FILE - C1982056A (2)

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from drilling operations or minor ground water inflows will be passed through the mud pits before being dischazged from the site. After the hole is completed, it will be logged, and then grouted from the bottom to within three feet of the surface. Apiece of rubber hose will be placed in the top three feet and slightly extend from the ground to serve as a marker. The required abandonment report will be submitted within 60 days to the Division. The reclamation bonding calculations for this activity can be found in Appendix A, Volwne IA. Twentymile Coal Company (TCC) does not plan to conduct underground coal mining operations within the Fish Creek Tipple permit azea. In order to study the possible effects of surface subsidence from longwall mining on the bases of lattice-type electric transmission towers, two test sites will be developed overlying the I"-Southwest Panel. Each site will consist of fow buried concrete pilings, 18 inches in diameter by 15 to 20 feet deep. Each piling will have a survey mazker placed in the top in order to measwe any settlement caused by surface subsidence. The sites will be accessed through an existing gate. The drill rig will use an existing trail to the extent possible and then take the shortest route to the sites. The location of the sites is shown on Foidel Creek Mine Map 40, Subsidence Monitoring Status Map. The holes will be drilled using an auger. Cuttings from the holes will be raked back from the holes and scattered over the site. In mid-]995, at the conclusion of the study, the site will be excavated to allow removal of the pilings to a depth of three feet below the surface. Topsoil will be removed from the sites and temporarily stockpiled prior to excavation. After removal of the upper portion of the pilings, the sites will be backfilled, regraded, topsoiled, and seeded with the appropriate seed mixtwe. The reclamation bondine calculations for this activity can be found in Appendix A, Volume IA. A development drilling hole is planned for 1994. Its location is shown on Figwe 7A, 1994 Development Drill Hole Location. The hole will be approximately 1,100 feet depth and 6.25 inches in diameter. An existing ranch road will be used as part of the access into the site. The existing ranch road, as shown on Figure 7A, will tie into the access road • leading into the site. The exact location will depend upon field conditions and survey control In reference to the new access road into the site, it is planned not to strip topsoil unless ground conditions dictate. If excessive rutting will occw, then the topsoil, approximately 2 feet in depth, will be bladed to either side of the road. Once the site is reclaimed, the topsoil will be bladed back over the road and seeded with the appropriate seed mixture. The drill site will be approximately 100 x 100 feet and will have the topsoil stripped from it. The topsoil will be stockpiled adjacent to the site and marker with a topsoil sign. Once the site is reclaimed, the topsoil will be redistributed over the site and seeded with the appropriate seed mixtwe. A ditch will be inscribed above the drill pad to divert upland flow away from and around the pad. If the topsoil stockpile is located upslope of the pad the diversion ditch will be inscribed above the stockpile. The ditch will m;n;mi~e run-on to the pad, and the ditch and the limited area of the pad distwbance will provide adequate sediment control for the site. After topsoil has been salvaged from the site, the site will be leveled as necessary, and mud pits will be dug within the pad limits. The material excavated from the pits will be placed adjacent to the pit within the pad area. After drilling ceases, the pits, once suitably dry, will be backfilled with the excavated material. A trash pit may be dug on the site, or an existing mud pit may be used to collect trash, such as paper, cans, cardboazd, LJ TR06-52 2.05-] 5 02/ ] 7/06