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Sariaz- 2.05.4 <br />from the portal surface openings. The portal entries will then be backfilled from the seals to the <br />portal openings with soil and broken rock materials and portal and face-up areas backfilled and <br />graded to completely cover all portal structures, establish a stable slope configuration, and eliminate <br />exposed highwall areas. A permanent shaft seal will be constructed/installed on the GGulch <br />Ventilation Shaft in accordance with applicable provisions of Rule 4.07. Two options exist for shaft <br />sealing; <br />1. Approximately 2.5 feet of soil material was removed prior to shaft construction leaving the <br />shaft collar below natural grade. A permanent reinforced concrete cap with vent pipe, <br />complying with applicable MSHA requirements, could be placed over the shaft opening. <br />2. A false deck could be established by installing lateral support beams into the ring beams <br />within the shaft collaz and placing decking over the support beams using either steel plate or <br />expanded metal and reinforced concrete. The remairtder of the collar would be backfilled <br />with material previously excavated during shaft construction. <br />The preferred method will be determined through discussion with the DMG prior to final <br />recllmation and implemented to assttre effective shaft closure. All equipment, buildings and above <br />ground structures will be dismantled and removed from the site. All concrete foundations will be <br />demolished to at least two feet below surface and the resulting concrete rubble will be used as backfill <br />or buried in place. <br />Final backfilling and grading will be completed to create a stable final topography appropriate to the <br />postmining land use. The final topographic configuration of the Sanborn Creek More area is shown <br />by the Facilities Posttnining Topography Map, (Maps 2.05-M6), and the Postmining Cross-Sections, <br />(Map 2.05-M7). The existing highwall near the portals will not be reclaimed since it is stable and is <br />also the cut slope for the existing road connecting the Sanborn Creek road and old State Highway <br />133, which will remain to provide long-term access following completion of nurruig and reclamation. <br />The culvert in Sanborn Creek and the culvert near the mine portals will be left in place since they <br />provide necessary drainage control for the adjacent railroad bed. <br />Degasification wells CBM-1 through CBM-15, and fire control and monitoring boreholes SCWF-1 <br />and SCGM-1 through SCGM-10 have been or will be plugged and sealed in accordance with <br />applicable provisions of Rule 4.07 and further described in Section 2.05-4. Associated surface <br />disturbance areas, including roads will be reclaimed in conjunction with reclamation of the Sanborn <br />Creek Mine facilities areas once mining and/or degasification in the Sanborn Creek More has ceased. <br />The pre-disturbance land use of this area was undeveloped land and historic Honing activities. The <br />affected lands will be reclaimed consistent with the undeveloped land use while maintaining access <br />through the area and to adjacent public lands. As previously noted, the Sanborn Creek road will be <br />retained to provide long-term access. <br />Soil Replacement - As previously discussed, there is a shortage of soil for replacement over the entire <br />disturbed area associated with the Somerset Mine area, which included portions of the Sanborn Creek <br />Mine area. During construction of the Sanborn Creek surface facilities, some soil material was <br />salvaged from azeas not previously disturbed and stockpiles. Since limited topsoil is available, the <br />stockpiled soil material will be used in this area only if sampling indicates that surficial materials are <br />not suitable as a revegetation growth medium. If soil is required, it will be replaced only in those <br />areas where it is needed. replacement will be at a uniform depth of 6 to 12 inches, and the replaced <br />soil will be seeded and mulched as soon as possible following placement to murirni7x the potential for <br />loss due to wind and water erosion. If soil is not required in this area, available stockpiled soil <br />material will be used on other areas where i[ is needed to support final revegetation. <br />Revegetation - In accordance with an agreement with the DMG, a vegetation srudy was conducted <br />for the Bear Creek and Hubbard Creek disturbance areas and adjacent undisturbed areas during the <br />TR-4R 2.05-61 Revised October 2004 <br />