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<br />The volumes of topsoil stripped from affected areas and reclaimed thickness are presented in Table <br />Vim. Table V-dA gives the existing topsoil/subsoil stockpile estimate pertaining to the refuse areas. <br />The areas of topsoil to be disturbed vs. soil mapping unit (soil type) and location of disturbance is <br />presented in Table V-5. Topsoil material was not segregated in stockpiles by type, as soil tests and <br />survey information indicated no advantages to segregation. <br />Topsoil will be redistributed as promptly as practical. Grading work will be programmed to have <br />finished slopes available on which to place topsoil as it is being stripped, where possible. This <br />planning minimizes disturbed areas and topsoil handling. Permanent stockpiles of topsoil, for use <br />during final reclamation, are placed on stable surtaces within the permit area where they will not be <br />subject to additional disturbance, wind erosion, or compaction during mine life. Ditches are <br />constructed above all topsoil stockpiles which are not located adjacent to a ridgeline, to prevent <br />runoff from adjacent areas from entering the stockpile areas, Side slopes of topsoil stockpiles are <br />not greater than 3h:1v. Side slopes of non-toxic fill (subsoil) stockpiles are not greater than 2h:1v. <br />Side slopes of 3h:1v or steeper on stockpiles are heavily mulched. <br />The stockpile locations are presented on Maps 26, 27, and 28 ("D" Portal), Map 82 (Refuse <br />Disposal Area), Maps 70-75 (Refuse Haul Road), Maps 53 & 54 (Water Tank Area and Access <br />Road), and Map 90 (Alluvial Well Area). Topsoil stockpiles are seeded during the first available <br />favorable planting period after removal. The stockpiles will not be disturbed prior to topsoil <br />redistribution or additions without prior approval by DMG. <br />The topsoil will be redistributed in a manner which achieves an approximate uniform thickness as <br />required for the postmining land use. On gradual slopes, topsoil will be spread with scrapers, motor <br />graders, and dozers. On steep slopes, the topsoil will be spread with tracked dozers. Excess <br />compaction of the topsoil will be avoided. On slopes of 3h:1v or steeper, the topsoils will be spread <br />and furrowed on the contour or tracked by a dozer to retard erosion and help retain runoff. Topsoil <br />will be protected to prevent excess wind and water erosion before revegetation operations. Other <br />specific erosion control practices are discussed in Section V.I., Revegetation. <br />Nutrients and soil amendments will be added as required to the redistributed topsoil so that it can <br />support the proposed postmining activities. The types antl amounts of materials added will be <br />based on soils tests performed by a qualified soils laboratory and the vegetative responses desired. <br />All treatments will be subject to review by the DMG. <br />Table V-G shows areas reclaimed during construction, areas to be reclaimed at the time of mine <br />closure and areas that will not be reclaimed because of continued use. <br />i <br />Mid-Term Review 2002 (8/2002) V-25 <br />