2010-06-08_PERMIT FILE - C1982056A (2)

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be windrowed to the side of the road and left in place. The 1,200 CY that will be salvaged from the road extension will be placed in the stockpile that will be established on the fan pad. In addition to the topsoil stockpiled from the road'. extension, approximately 740 CY will be salvaged and stockpiled from the pad. The soil resources • information was derived from information presented in Exhibits 7 and 8, Soil Profile Description and Soil Mapping Unit. Descriptions, Map No. 19, Mine No. 3, Soils presented in permit C -84 -062. These materials are incorporated herein by reference. At the bleeder fan site, Twentymile will establish a test pit to verify topsoil depths prior to salvaging topsoil. The stockpiled topsoil, which is located within the pad area, will be stabilized with the topsoil stockpile stabilizing seed mixture. Prior to salvaging any topsoil from the site, a T & E species reconnaissance for Ute Lady's Tresses, Spiranthes diuvialis, will be conducted, and the results forwarded to the Division. It is not anticipated that this species will be found, as the site appears to be outside of its natural range. 18 Right Ventilation Shaft (TR04 -44) Approximately 4,400 feet of the access road crosses upland areas, with the remaining 2,700 feet crossing lowland areas where road construction will involve removal of any large vegetation and stripping and stockpiling of other vegetation, topsoil, and organic materials. Similarly, the shaft pad is located in an upland area. Given an average topsoil depth of approximately 6 inches in the upland area and a total road disturbance area of approximately 5.7 acres, approximately 4,600 cubic yards of topsoil will be salvaged from the road corridor, and 2,000 cubic yards from the 2.5 acre pad area. Prior to initiating marked with identifying signs to prevent surface disturbance within buffer zone areas. The topsoil from the road corridor was initially windrowed adjacent to the road and topsoil from the pad area was placed in a stockpile adjacent to the shaft pad and within the road corridor, for future reclamation use. As a result of concerns related to protection of windrowed topsoil from erosion and contamination, a decision was :made to recover topsoil from the windrows and place it in stockpile. The topsoil salvage volumes are indicated on Table 49A. Seeding with the topsoil stockpile stabilization seed mixture identified on page 2.05 -121 will stabilize the windrowed and stockpiled topsoil. 6 -North Mains Ventilation Shaft (TR05 -48) • Along the 2,930 -foot access road, construction will involve removal of any large vegetation and stripping and stockpiling of other vegetation, topsoil, and organic materials. Similarly, the shaft pad is located in an upland area. Given an average topsoil depth of approximately 6 inches in the upland area and a total road disturbance area of approximately 2.4 acres, approximately 1,940 cubic yards of topsoil will be salvaged from the road corridor, and 8,954 cubic yards from the 11.1 acre pad area. Prior to initiating topsoil removal activities, wetland buffer zones will be marked with identifying signs to prevent surface disturbance within the buffer zone areas. The topsoil from the road corridor will be recovered and placed in a stockpile at the north end of the road corridor beyond the edge of the 35 -foot road disturbance area, and topsoil from the pad area will be placed in a stockpile within the shaft pad on the southwest edge of the pad for future reclamation use. The topsoil salvage volumes are indicated on Table 49A. Natural vegetative materials (mulch) incorporated into the topsoil, and seeding with the topsoil stockpile stabilization seed mixture identified on page 2.05 -121 will stabilize the stockpiled topsoil. 6 -Right Thickener Underflow Borehole and Pipeline Installation The proposed drill -pad and light -use road are in areas that have previously been disturbed by County road construction activities. It is unknown whether soil materials were salvaged and replaced in these areas, however, a reclaimed grassland vegetation community exists on a portion of the proposed pad area. The corridor for the proposed thickener underflow pipeline crosses both previously disturbed and existing disturbance areas (mine facilities and railroad construction). For the drill pad, pipeline, and the margins of the light -use road, available soil materials will be salvaged and stockpiled for use in site reclamation. A small temporary soil stockpile will be established adjacent to the pad area for the limited soil (estimated at approximately 300 cy) from the borehole pad and light -use road margins. 0 MR10 -243 2.05 -84.9 05/31/10