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18 Right Ventilation Shaft (TR04 -44) - Approximately 4,400 feet of the access road crosses upland areas, with
<br />the remaining 2,700 feet crossing lowland areas where road construction will involve removal of any large
<br />vegetation and stripping and stockpiling of other vegetation, topsoil, and organic materials. Similarly, the shaft pad
<br />is located in an upland area. Given an average topsoil depth of approximately 6 inches in the upland area and a
<br />total road disturbance area of approximately 5.7 acres, approximately 4,600 cubic yards of topsoil will be salvaged
<br />from the road corridor, and 2,000 cubic yards from the 2.5 acre pad area.
<br />Prior to initiating any disturbance, stream corridors will be marked with identifying signs to prevent surface
<br />disturbance within buffer zone areas. The topsoil from the road corridor was initially windrowed adjacent to the
<br />road and topsoil from the pad area was placed in a stockpile adjacent to the shaft pad and within the road corridor,
<br />for future reclamation use. As a result of concerns related to protection of windrowed topsoil from erosion and
<br />contamination, a decision was made to recover topsoil from the windrows and place it in stockpile. The topsoil
<br />salvage volumes are indicated on Table 49A. Seeding with the topsoil stockpile stabilization seed mixture
<br />identified on page 2.05 -121 will stabilize the windrowed and stockpiled topsoil.
<br />6 -North Mains Ventilation Shaft (TR05 -48) - Along the 2,930 -foot access road, construction will involve
<br />removal of any large vegetation and stripping and stockpiling of other vegetation, topsoil, and organic materials.
<br />Similarly, the shaft pad is located in an upland area. Given an average topsoil depth of approximately 6 inches in
<br />the upland area and a total road disturbance area of approximately 2.4 acres, approximately 1,940 cubic yards of
<br />topsoil will be salvaged from the road corridor, and 8,954 cubic yards from the 11.1 acre pad area. Prior to
<br />initiating topsoil removal activities, wetland buffer zones will be marked with identifying signs to prevent surface
<br />disturbance within the buffer zone areas. The topsoil from the road corridor will be recovered and placed in a
<br />stockpile at the north end of the road corridor beyond the edge of the 35 -foot road disturbance area, and topsoil
<br />from the pad area will be placed in a stockpile within the shaft pad on the southwest edge of the pad for future
<br />reclamation use. The topsoil salvage volumes are indicated on Table 49A. Natural vegetative materials (mulch)
<br />incorporated into the topsoil, and seeding with the topsoil stockpile stabilization seed mixture identified on page
<br />2.05 -121 will stabilize the stockpiled topsoil.
<br />18 -Left Ventilation Shaft Installation (TR09 -66) - Approximately 420 feet of the light -use road crosses upland
<br />areas, where road construction will involve removal of any large vegetation and stripping and stockpiling of other
<br />vegetation, soil, and organic materials. Similarly, the shaft pad is located in an upland area. In order to reestablish
<br />effective vegetative cover, TCC will recover and stockpile a maximum of 18 inches of soil material from shaft
<br />disturbance areas. With a total road disturbance area of approximately 0.3 acres, approximately 750 cubic yards of
<br />soil will be salvaged from the road corridor, and 12,800 cubic yards from the 5.3 acre pad area. The soil salvage
<br />volumes are indicated on Table 49A. Prior to initiating soil removal activities, temporary sediment control, in the
<br />form of wattles and/or silt fences, will be installed downgradient of the road and pad to control runoff and sediment.
<br />Soil materials will be salvaged and placed in two soil material stockpiles. The stockpiles are located where they
<br />will not be subject to vehicle traffic or erosion from runoff, will be stabilized by seeding with TCC's temporary
<br />seed mix, and topsoil signs will be posted.
<br />6 -Right Thickener Underflow Borehole and Pipeline Installation - The proposed drill -pad and light -use road are
<br />in areas that have previously been disturbed by County road construction activities. It is unknown whether soil
<br />materials were salvaged and replaced in these areas, however, a reclaimed grassland vegetation community exists
<br />on a portion of the proposed pad area. The corridor for the proposed thickener underflow pipeline crosses both
<br />previously disturbed and existing disturbance areas (mine facilities and railroad construction). For the drill pad,
<br />pipeline, and the margins of the light -use road, available soil materials will be salvaged and stockpiled for use in
<br />site reclamation. A small temporary soil stockpile will be established adjacent to the pad area for the limited soil
<br />(estimated at approximately 300 cy) from the borehole pad and light -use road margins.
<br />19RT Mine Dewatering Borehole and Pipeline - Given the proximity of existing ranch roads, TCC does not plan
<br />or anticipate the need for new road construction to access the 19RT Dewatering Borehole drill -site. With dry
<br />ground conditions, drilling equipment and supplies should be able to travel the short distance overland from the
<br />existing roads to the drill -site, without significant surface disturbance. Both the shaft pad and pipeline corridor are
<br />located in an upland areas. For both the shaft pad, and along the 6,200 -foot pipeline corridor, construction will
<br />involve removal of any large vegetation and stripping and stockpiling of other vegetation, soil, and organic
<br />materials. Given an average soil depth of approximately 6 inches in the upland areas, a pad area of approximately
<br />MR14 -283 2.05 -84.10 10/09/14
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