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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. TC 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 (TRI 1-78) — 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 />5MN Borehole and Pipelines (MR14-283, MR15-288) — Construction of the light -use road and pad for the 5MN
<br />Cement Borehole will involve removal of any large vegetation and stripping and stockpiling of other vegetation,
<br />soil, and organic materials. The road and pad are located along the crest of a minor ridgeline where soil
<br />development is limited, so TC will recover and salvage a maximum of 12 inches of soil from the road and pad
<br />areas. With a pad area of approximately 0.9 acres, and a road corridor of approximately 3.1 acres, a maximum
<br />volume of approximately 6,540 cubic yards of soil material will be salvaged and placed in stockpile for future use
<br />in reclaiming the site. A temporary soil stockpile(s) will be established on the northeast corner of the pad area
<br />adjacent to the road. 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. Pipeline construction will involve temporary removal and windrowing of soil
<br />materials from the pipeline trench area (maximum pipeline corridor width of 40 feet). The maximum disturbance
<br />footprint will be approximately 4.6 acres, corresponding to a maximum soil salvage volume of approximately 7,400
<br />cubic yards (at a 12 -inch salvage depth). Since, however, the soil will be progressively removed, windrowed, and
<br />then almost immediately replaced, as pipeline construction proceeds, this soil salvage volume is not reflected in
<br />Table 49A — Soil Stockpile Summary.
<br />10 -East Emergency Air Borehole (MR15-289) — Prior to construction of the l0E Emergency Borehole pad, site
<br />preparation will involve removal of any large vegetation and stripping and stockpiling of other vegetation, soil, and
<br />organic materials. The pad is located on a minor ridgeline where soil development is limited, so TC will recover
<br />and salvage a maximum of 12 inches of soil from the pad disturbance areas. With a total pad area of approximately
<br />1.2 acres, a maximum volume of approximately 1,900 cubic yards of soil material will be salvaged and placed in
<br />stockpile for future use in reclaiming the site. One or more temporary soil stockpile(s) will be established on the
<br />north side of the pad area. 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 />13 -Left Outby Utility Borehole (MR15-291) — Construction of the light -use road and pad for the 13LT Outby
<br />Utility Borehole will involve removal of any large vegetation and stripping and stockpiling of other vegetation, soil,
<br />and organic materials. The road and pad are located on a low -gradient sidehill where TC will recover and salvage a
<br />maximum of 18 inches of soil from the road and pad areas. With a pad area of approximately 1.0 acres, and a road
<br />corridor of approximately 2.4 acres, a maximum volume of approximately 8,230 cubic yards of soil material will be
<br />TR18-90 2.05-84.14 04/05/18
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