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2 - 38 <br />2.3.1 TOPSOIL AVAILABILITY <br />• The availability of topsoil materials associated with disturbances within the permit area has <br />been assessed as part of the baseline soil survey program and reported in Section 4.4.4. Two <br />types of topsoil will be salvaged from the areas to be disturbed. Rivra Gravely Sandy Loam <br />Variant will be salvaged to a depth of 12 inches at the sediment pond and rip-rap stockpile areas, <br />while 24 inches of Glendive Sandy Loam will be salvaged from the office area. The types of soil <br />in the permit area and salvage depths in the disturbed areas are shown in Figures 4.4.1 and <br />2.2.2, respectively. <br />Approximately 900 cu. yards of topsoil will be salvaged from the sedimentation pond and <br />980 cu. yards from the office complex. Construction of the connecting road between McClane <br />and Munger Canyons will require salvaging 1,719 cubic yards of topsoil within the McClane <br />Canyon permit boundary. The soil to be salvaged will be Glendive Sandy Loam and Rivra Gravely <br />Sandy Loam with 1446 cubic yards and 273 cubic yards respectively. This topsoil will be stored <br />in the McClane Canyon topsoil stockpile. <br />2.3.2 TOPSOIL REMOVAL <br />Vegetation and topsoil will be removed from any area that will be disturbed (access/haul <br />road extensions, additional facilities areas and the sedimentation pond) when suitable topsoil <br />exists in recoverable thicknesses. Removal will be by front end loaders or some other equipment <br />adequate to differentially segregate suitable topsoil material from unsuitable soil to the depth <br />indicated on Figure 4.4-1. <br /> <br />~ Volume 1 4-29-9 <br />