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RULE 2: Permit <br /> Page 2.05-33b <br />TR-21 Revised: 2/17/2021 <br /> <br />material in the general vicinity of its removal in an area where it will not be removed from the drill site <br />area. Stockpiles of topsoil will be compacted to prevent erosion by wind and other elements until used for <br />reclamation. Topsoil at each drill pad if the area will be stored on the upslope side of the drill pad when <br />safe and practicable to do so to minimize risk of erosion. <br /> <br />Stripped topsoil and usable subsoil will be promptly redistributed on regraded areas where possible. In all <br />other areas, this material will be stockpiled. Topsoil stockpiles will be located as shown on Map 2.05.3 -2. <br />These locations have been chosen to minimize soil transport distances, maximize stability of the <br />stockpiles, and avoid disturbance by mining operations. They will be protected from wind and water <br />erosion, unnecessary compaction, and contamination. If sedimentation pond topsoil piles cannot be <br />constructed within an existing pond drainage area, berms will be constructed along the downhill side to <br />hold 100% of the 10 -year, 24-hour storm event. Runoff from stockpiles will be contained and treated <br />using silt fences, gravel filters, or straw bales. Stockpiles will be constructed in an oval shape with the top <br />leveled. They will be identified with signage. Each pile will be seeded with an approved mix of non- <br />noxious, quick-growing annual and perennial plants during the first appropriate growing season. <br />TABLE 2.05.3-2a <br />LORENCITO CANYON MINE <br />TOPSOIL STOCKPILE VOLUMES <br /> <br /> Stockpile Volume <br />(loose cubic yards)5 <br />Jeff Canyon Surface1 325,000 <br />Lorencito Canyon Surface Mine2 310,000 <br />Loadout3 31,000 <br />Roads4 12,000 <br />TOTAL 678,000 <br /> 1 Approximately 105 Acres at 1.6' <br />2 Approximately 100 Acres at 1.6' <br />3 Approximately 4 Acres at 4.0' <br />4 As LOC expects to use roads, minimal topsoil from roads is expected. <br />5 Swell=20% <br /> <br />Topsoil stockpiles will be surveyed when established and annually thereafter, as needed. Volumes will be <br />updated and reported annually as part of the annual reclamation report. <br />