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. (EC), sodium adsorption ratio (SAR), texture, nitrate-nitrogen, and acid-base potential (ABP) to determine suitability. All regraded spoil samples have "good-rated" suitable quality material. The 2005 So$s Report is attached and provides the detailed write-up, analytical data, and sampling locations from the 2005 sampling effort. • Soil Pit -Soil FerdHry Three deep backhoe pits were excavated at randomly located sites. A total of thirteen (13) samples were collected from the three pits. The sampling included the reapplied topsoil to the underlying spoil contact. All reapplied topsoIl samples have "good-rated" suitable quality material. The 2005 Soils Report is attached and provides the detailed write-up, analytical data, and sampling locations from the 2005 sampling effort. • Topsoil Balance SCC is submitting an updated topsoIl balance with the Annual Reclamation Report as required by Pemut C-94082, Tab 21, Pages 5, 25, and 26, and as recommended by Section 32.04.13(2) of Colorado's Regulations for Coal Mining. The topsoil balance is completed to ensure topsoil is salvaged, stockpiled, and replaced as recommended and approved in the permit, and, if necessary, to readjust the topsoil salvage and redistribution thickness. Topsoil Salvage and Storage. The life-of--mine disturbance azea from which topsoil was salvaged (846.3 acres) and the topsoil stockpile sites as of December 31, 2005 aze shown on the Yoast Mine 2005 Reclamation Map. During 2005, there was an additional 1.2 acres of topsoil salvaged, all of which was live handled and respread on graded spoil, in addition topsoil was removed from stockpiles • and reapplied over graded spoil The volume of topsoil remaining in stockpiles as of December 31, 2005 was determined by field survey. The stockpile volumes as of December 31, 2005 are listed in Table 05.1.. As of December 31, 2005, there were 396.8 acre-feet of stockpiled topsoIl remaining in the mituug azea. Topsoil Replacement. Topsoil was replaced on 115.1 aces of disturbed area in 2005. Therefore, the total remaining life-of--mine disturbance area requiring topsoil (as of December 31, 2005) is 283.6 acres. Topsoil Replacement Thickness. The topsoil balance as of December 31, 2005 for the remaining life-of--mine is calculated as follows: Mine Area Total disturbance azea =846.3 acres Permanent Facilities & Topsoil replaced = 562.7 acres Disturbance azea requiring soil = 283.6 acres Soil in stockpiles (Table 05.1) = 396.8 acre-feet Mean replacement depth available = 1.4 feet (16.8 inches) By dividing the topsoIl available by the area requiring topsoil replacement, we amve at the future topsoil balance thickness of approximately 1.4 feet Eor the remaining disturbance area. This generalized topsoil balance does not account for any area variations or for permanent facilities not requiring topsoil; it is strictly an azea-wide average. During 2005, an exhaustive sampling was conducted over the entire mine site on a 500 &. grid. The data is presented on the 2005 Soil/Spoil Map and on Table 05.4. The overall topsoil replacement depth for the azeas reclaimed [o date is 22.6 inches.