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Section - 2.05.4 <br />A permanent shafr seal will be constructed in the C-Gulch Ventilation (East Fan) shafr by <br />completely backfilling the shaft with approximately 4,000 cubic yards of soil and rock <br />material borrowed from a debris deposit at the base of an unnamed drainage to the east of <br />the Sanborn Creek Mine main portals location. This area is already contained within the <br />disturbance boundary for the Sanborn Creek Mine portal area, as access to monitoring well <br />SC-1 had once traversed the debris deposit area. The borrow area slope will be finished at a <br />2:1 grade and the slope reseeded. <br />In a separate, near future (June 2003) technical revision application, approximately 15,000 <br />cubic yards of additional material from the debris deposit will be utilized to complete further <br />backfilling and recontouting of the shaft and portals sites. Removal of the debris deposit <br />materials will also allow the existing access road at the toe of the deposit (that will remain <br />afrer cessation of operations) to be widened to accommodate two-way traffic. These revised <br />reclamation plans and contours will be provided in the future technical revision application, <br />including revisions to Map 2.05-M6 and the Reclamation Details Exhibit No. 2.05-E5. <br />All equipment, buildings and above-ground stmcmres will be dismantled and removed from the site. <br />All concrete foundations will be demolished to at least two feet below surface and the resulting <br />concrete rubble will be used as backfill or buried in place. <br />Final backfilhng and grading will be completed to create a stable Fnal topography appropriate to the <br />postmining land use. The final topographic configuration of the Sanbom Creek Mine area is shown <br />by the Facilities Postmining 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 Sanbom Creek road and old State Highway <br />133, which will remain to provide long-term access following completion of mining and reclamation. <br />The culvert in Sanbom 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 />Degasificadon 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. Associated surface disturbance areas, including roads will be <br />reclaimed in conjunction with reclamation of the Sanbom Creek Mine facilities areas once mining <br />and/ox degasification in the Sanbom Creek Mine has ceased. <br />The pre-disturbance land use of this area was undeveloped land and historic mining 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 Sanbom 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 Sanbom Creek <br />Mine azea. During construction of the Sanbom Creek surface facilities, some soil material was <br />salvaged from aeeas 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 surEicial 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 minimize 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 it is needed to support final revegetation. <br />Revegetation - In accordance with an agreement with the DMG, a vegetation study was conducted <br />for the Bear Creek and Hubbard Creek disturbance areas and adjacent undisturbed areas during the <br />TR-41 2.05-61 Revised August 2002 <br />MR-69 Revised May2003 <br />