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on the southwest edge of the pad for future reclamation use. The topsoil salvage volumes are indicated on Table
<br />49A. Natural vegetative materials (mulch) incorporated into the topsoil, and seeding with the topsoil stockpile
<br />stabilization seed mixture identified on page 2.05 -121 will stabilize the stockpiled topsoil.
<br />6 -Right and 7 -Right Thickener Underflow Borehole and Pipeline Installations
<br />The proposed drill -pads and light -use road are in areas that have previously been disturbed by County road
<br />construction activities. It is unknown whether soil materials were salvaged and replaced in these areas, however, a
<br />reestablished sagebrush - meadow vegetation community exists over most of the proposed pad and pipeline areas.
<br />The corridor for the proposed thickener underflow pipeline crosses both previously disturbed and existing
<br />disturbance areas (mine facilities and railroad construction). For the drill pads, pipeline, and the margins of the
<br />light -use road, available soil materials will be salvaged and stockpiled for use in site reclamation. Small temporary
<br />soil stockpiles will be established adjacent to the pad areas for the limited soil (estimated at approximately 300 cy at
<br />each site) from the borehole pads 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 />0.35 acres, and a total pipeline disturbance area of approximately 7.2 acres, approximately 300 cubic yards of soil
<br />material will be salvaged from the pad area, and 5,750 cubic yards from the pipeline corridor. Soil from the
<br />pipeline corridor will be removed and windrowed along one side of the pipeline corridor, and soil from the pad area
<br />will be placed in a stockpile within the borehole pad for future reclamation use. The soil salvage volumes are
<br />indicated on Table 49A. Natural vegetative materials (mulch) incorporated into the topsoil, and seeding with the
<br />topsoil stockpile stabilization seed mixture, identified on page 2.05 -121, will stabilize and protect the stockpiled
<br />soil materials.
<br />15RT Ventilation Shaft (TR11-77) - An existing two -track road extends from the Fish Creek Water Treatment
<br />Facility road to the proposed shaft site, however, it does not appear that any soil material was salvaged from the
<br />road corridor. Therefore, for both the light -use road and shaft pad, construction will involve removal of any large
<br />vegetation and stripping and stockpiling of other vegetation, soil, and organic materials. TCC will recover and
<br />salvage a maximum of 18 inches of soil from the road and pad areas. With a pad area of approximately 1.6 acres,
<br />and a road corridor of approximately 0.7 acres, a maximum volume of approximately 5,600 cubic yards of soil
<br />material will be salvaged and placed in stockpile for future use in reclaiming the site. A temporary soil stockpile
<br />will be established on the east end of the pad area, natural drainage will be diverted around the stockpile by a short
<br />diversion ditch, and the natural vegetative materials incorporated into the soil, and seeding with the topsoil
<br />stockpile stabilization seed mixture, will stabilize and protect the stockpiled soil materials.. Soil salvage volumes
<br />are indicated on Table 49A.
<br />16LT Utility Borehole (TR11-78) — The associated light -use road follows an existing two -track ranch road for part
<br />of its length, however, it does not appear that any soil material was salvaged from the road corridor. Therefore, for
<br />both the light -use road and borehole pad, construction will involve removal of any large vegetation and stripping
<br />and stockpiling of other vegetation, soil, and organic materials. The road is located near the top of a ridgeline
<br />where soil development is limited, so TC will recover and salvage a maximum of 12 inches of soil from the road
<br />and pad areas. With a pad area of approximately 2.2 acres, and a road corridor of approximately 6.1 acres, a
<br />maximum volume of approximately 10,900 cubic yards of soil material will be salvaged and placed in stockpile for
<br />future use in reclaiming the site. A temporary soil stockpile(s) will be established on the east end of the pad area
<br />adjacent to the road, where natural drainage will route around the stockpile(s) due to the existing natural drainage
<br />configuration, and the natural vegetative materials incorporated into the soil, and seeding with the topsoil stockpile
<br />stabilization seed mixture, will stabilize and protect the stockpiled soil materials.. Soil salvage volumes are
<br />indicated on Table 49A.
<br />MR13 -270 2.05 -84.11 11/21/13
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