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stored in a topsoil stockpile or 3) windrowed for a period not exceeding • six months before completing option 1 or 2. Option 3 (windrowing) was only used in the fall of the year when weather conditions prohibited ideal hauling, but stripping activities were still needed to keep ahead of mining operations. The topsoil windrows were located parallel and adjacent to the active pit approximately three to four pit widths ahead of the active cut. If topography conditions existed such that drainage from the active disturbed area would reach the topsoil, a structure such as a ditch or berm was constructed to protect the topsoil resource from being eroded. Access roads were used to haul the topsoil to stockpiles whenever possible, with the use of scraper trails being limited to that which was absolutely necessary. One topsoil stockpile was used in the Moffat Area. Prior to establishing the topsoil stockpile, the area in and around the storage area was smoothed during general site preparation activities. The stockpile was established during the first year of topsoil salvage when graded areas were unavailable for topdressing replacement. The stockpile remained active throughout the mining process. The West Ridge Area had two stockpiles. Live handling of salvaged topsoil was preferred over stockpiling. Live handling has time and equipment advantages because salvaged topsoil is placed directly on the reclaimed land, thus eliminating double handling. • It is also most beneficial to the establishment of permanent, diverse, native plant communities on reclaimed areas, because growth of volunteer vegetation is maximized, and decreased handling minimizes adverse impacts to soil structure. 4.3.3 TOPDRESSING faS HAIJ~NCE Topsoil salvage plans required the six inches, whichever was greater. Tops series, variants and established unnamed Buckskin Splitro Cochetopa Venable Skylick Winevada removal of the entire A horizon or ail was salvaged from the following series: Coutis-like Unnamed Series 51-deep phase Unnamed Series 51-very deep phase Detailed information concerning these soils may be found in the Soils Inventory Report, Section 2.3 (Table 4.3-1 shows information condensed from Table 2.3-2 and 2.3-3). Each series and its map units are shown with the depth of the A horizon, the soil reconstruction rating of the horizons and • the stripping depth. All of the soils have a good or fair rating as soil reconstruction material. The location of the map units is shown on Exhibit Renewal-3 9.3-3 June 13, 1997