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n <br />LJ <br /> <br />r , <br />L.J <br />There were forty five (45) regraded spoil samples collected within the final graded areas during 2005. <br />The samples were analyzed Fox pH, saturation percentage, electrical conductivity (EC), sodium <br />adsorption ratio (SAR), texture, nitrate-nitrogen, and acid-base potential (ABP) to determine <br />suitability. All regraded spoil samples have "good-rated" suitable quality material. The 2005 Soils <br />Report is attached and provides the detailed write-up, analytical data, and sampling locations from the <br />2005 sampling effort. <br />• Spoil Suitability <br />• Soil Pit -Soil Fertility <br />Three deep backhoe pits were excavated at randomly located sites. A total of eleven (11) samples <br />were collected from the three pits. The sampling included the reapplied topsoil to the underlying spoil <br />contact, All reapplied topsoil samples have "good-rated" suitable quality material. ,The 2005 Soils <br />Report is attached and provides the detailed write-up, analytical data, and sampling,locations from the <br />2005 sampling effort. <br />• Topsoil Balance <br />SCC submitted a topsoil balance with Permit Revision 04 (dated 9/04). A~ topsoil balance is <br />completed to ensure topsoil is salvaged, stockpiled, and replaced as recommended and approved in <br />the permit, and, if necessary, to readjust the topsoil salvage and redistribution thickness. The topso$ <br />information is also used to update the topsoil volume information previously submitted and adjust the <br />mean topsoil replacement thickness as necessary. <br />Topsoil Salvage and Storage. The life-of--mine disturbance area from which topsoil was salvaged <br />(1,382.8 acres) and the topsoil stockpIle sites as of December 31, 2005 are shown on the Seneca II-W <br />Mine 2005 Reclamation Map. During 2005, there was an additional 14.2 acres of topsoil salvaged, all <br />of which was live handled and reapplied on graded' spoil, in addition topsoil ;was removed from <br />stockpIles and reapplied over graded spoil. <br />The actual volume of topsoil salvaged and stockpiled from 1989 through December 31, 2005 was <br />determined by field survey of existing topsoil storage stockpiles. The stockpile volumes as of <br />December 31, 2005 are listed in Table 05.1. As of December 31, 2005, 73.1 acre-feet of soil were <br />stockpiled along the Tie-Across Haul Road and 378.1 acre-feet of soil remain stockpiled in the mitring <br />area. <br />Topsoil Replacement. Topsoil was replaced on 194.4 acres of disturbed area in 2005. Therefore, the <br />total remaining life-of--mine disturbance azea requiring topsoil (as of December 31, 2005) is 344.7 acres. <br />Topsoil Replacement Thickness. The overall soil replacement thickness for the II-W mine area <br />was projected to be 1.3 feet for the mine azea and 0.7 feet for the Tie-Across Haul Road. The soil <br />balance for the remaining disturbed azea, as of December 31, 2005, was calculated as follows: <br />Mine Area <br />Total disturbance area <br />Permanent Facilities & TopsoIl replaced <br />Disturbance area requiring soil <br />Soil in stockpiles (Table 05.1) <br />Mean replacement depth <br />- 1382.8 acres <br />= 941.5 acres <br />= 344.7 acres <br />= 378.1 acre-feet <br />= 1.1 feet (13.2 inches) <br />Tie Across Haul Road <br />Disturbance area requiring soil <br />= 96.6 acres <br />