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• Soil Balance and Replacenie n[ <br />The soil balance is calculated fcr Seneca II-W Mine by comparing the disturbance area that <br />requires soil to placement as of December 31, 1997 with the soil reserve in stockpiles. The <br />disturbance area fo[ Seneca II-W Mine, shown on drawing 2W97-2A, with exception to the [ie- <br />across haul road, totaled 701.0 acres on December 31, 1997, No soil was salvaged er needs <br />to to replaced Genea[h the soil stocY.pile sites. Also, since Pend 005 (4.8 ac[esl, F'o nd <br />006 (7.9 acres), the Mlne Entrance Road, Raui Rcad A, and na ui Road G are permanent <br />postmine facilities (11.p acresl, soil will only be replaced on a pe rt ion of those roads <br />effectively narrowing [hem tc 20 fee[ wide. Topsoil has been [placed cn [66.5 acres of <br />disturbed area through December 31, 1997. Therefore, the total d acuroance area requi uny <br />topsoil as of December 31, 1997 •.ras 510.2 acres at the mine site and 96.6 acres for the <br />tie-across haul read. <br />Soil Replacement Thi cL:ness <br />The soil reel a~-ement [hi c4:ness fcr *. ~= fi.s: fi': e-year permit Seim was [•rc7eci ed [o be 1.? <br />fee- for the mi r.e area and 0.7 feet fcr 'he tie-ac wss ha u! road. The soil balance as of <br />• Gecemoer 31, 1?97 was calculated as follows: <br />Mine Area <br />Total disturbance area 701. 0 act=_s <br />Permanent cacilities 6 Topsoil replaced 1150. Bloc res <br />Gisturbance area requiring soil = 51 G. 2 acres <br />Soil in stocF:pil es )Toole 37.1) = F71. b acre-ieei <br />14ean replacement depth = 1. 3 feet <br />Tie Across Haul Fc ad <br />Gi srurbance area [equi ci nq soi'_ = 96.5 acres <br />Soil in stockpiles (Table 97.11 = 59.7 acre- fee[ <br />Mean replacement depth = 0.7 feel <br />`J <br />By dividing the soil available by the area requiting soil replaced, we ~-[rive a[ Ch_ 19°7 <br />soil balanc e'chic4:ness of 0.7 fee[ for the tie-acre ss haul road and _.3 :eet for [he min_ <br />area. <br /> <br />