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<br />COLOWYO COAL COMPANY <br />INITIAL WEST PIT BOXGUT TOPSOIL STRIPPING <br />INITIAL STRIPPING AREA DRAINAGE ANALYSIS <br />(ASBUILT AS OF JULY 1B, 1994) <br />Drelneepe Drelnape Arse Drelnape Aree Total Aere-feet <br />Structure Topsoil Strip Arese Topsoil Piles Drelnape Aree Required <br />Aera-Feet Excess <br />Actual Acre-Feat <br />N1 <br />Waat Pit Pond • 73.6 9.9 83.7 7.7 12.8 6.1 <br />r2 <br />Inltld Boxcut 169.8 13.4 183.2 17.0 60.3 33.3 <br />r3 <br />In-Pit Control Structure 3B.9 7.1 46.0 4.3 6.7 1.4 <br />Totsl Inltld <br />Stripping 262.4 30.4 312.8 29.0 68.8 39.8 <br />• Note: Wsst Pit Pond Expenalon complete on June 2B, 1990 <br />Done by: DSC,SRH,JPG <br />July 21, 1994 <br />