2012-01-06_PERMIT FILE - C1982057 ‎(33)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 1/6/2012
• Section_Exhibit Name: Tab 21 Minesoil Reconstruction
• Media Type: D
• Archive: No

The recommended topsoil salvage depth is based solely on the depth to sandstone bedrock. The mean
in situ suitable topsoil depth for 30 Winevada profiles is 28 inches (Appendix 9-61
The 53C, 53D, 53E, and 53F map units consist of 85 percent Winevada with 5 percent Splitro, 4
percent Coutis, 4 percent Foidel, 1 percent Roxal variant, and 1 percent Starman inclusions (Appendix
9-2, Table il~ A 2.0-foot mean salvage depth was used for Map Units 53C, 53D, 53E, and 53F to
calculate recoverable topsoil volumes listed in Table 21-1 and Exhibit 9-1. This topsoil salvage depth
figure accounts for inclusions and topsoil loss during salvage due to brush clearing.
62C, 62D-Chaperton Sandy Clay Loam. The Chaperton sandy clay loam soil occurs on strongly sloping
to moderately steep mountain toeslopes, sideslopes, and alluvial fans. This soil has more profile
development (structurally developed subsurface horizon) than the adjacent Torriorthents but lacks the
thick, dark colored surface horizon associated with Silas.
This soil is a good source of loamy topsoil. The mean in situ suitable topsoil depth for 3 Chaperton
profiles is 60 inches (Appendix 9-61
The 62C and 62D map units consist of 85 percent Chaperton with 8 percent Torriorthents and 7
percent Silas inclusions (Appendix 9-2, Table 11. A 4.5-foot mean salvage depth was used for these
map units to calculate recoverable topsoil volumes listed in Table 21-1 and Exhibit 9-1. This topsoil
salvage depth figure accounts for inclusions within these map units.
66D-Foidel Silt Loam. The Foidel silt loam soil is located on moderately steep mountain sideslopes,
ridgeline benches, and swales. The soil profile is deep and well developed with a thick, dark colored
Surface horizon and subsoil clay accumulation. Adjacent soils have higher subsoil clay contents IRoutt
and Cochetopa) or lack subsoil clay accumulation (Coutis and Winevadal~
The recommended topsoil salvage depth is typically based on the entire soil profile since all horizons
have favorable chemical and physical properties. Occasionally, topsoil salvage must be discontinued at
the top of subsoil or substratum horizons which have unsuitable clay contents or consistency
characteristics. The mean in situ suitable topsoil depth for 19 profiles is 57 inches (Appendix 9-61•
19 Revised 4!24/91