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Table 2.04.9-16 Topsoil Mass Balance - Collom Mine Area <br />Map Unit <br />Surface <br />Area <br />(acres) <br />Components <br />% <br />Depth (inches) <br />Volume (cubic yards) <br />Topsoil <br />Subsoil <br />Topsoil <br />Subsoil <br />1 <br />0.7 <br />Fluvaquents <br />60-- <br />-- <br />-- <br />Battlement <br />40 <br />2 <br />18.1 <br />Lithic/Ustic Torriorthents <br />60 <br />6 <br />0 <br />8,763 <br />-- <br />Bedrock Outcrop <br />30 <br />-- <br />-- <br />-- <br />-- <br />5 <br />5.8 <br />Ustifluventic Ha locambids <br />45 <br />8 <br />15 <br />5,597 <br />10,494 <br />Battlement / Havre <br />45 <br />13 <br />130.2 <br />Lithic / Typic Haplustepts <br />45 <br />5 <br />12 <br />39,372 <br />94,493 <br />Torriorthents <br />25 <br />4 <br />-- <br />17,499 <br />-- <br />Rock Outcrop / Extremely <br />Shallow <br />20 <br />-- <br />-- <br />-- <br />-- <br />14 <br />0.4 <br />Typic/Lithic Haplustepts <br />40 <br />5 <br />12 <br />103 <br />246 <br />Duffymont & Typic Haplustolls <br />40 <br />7 <br />12 <br />144 <br />246 <br />15 <br />1.4 <br />Campspass v. <br />(Shallow / Lithic) <br />60 <br />6 <br />12 <br />681 <br />1,363 <br />16 <br />125.0 <br />Campspass <br />80 <br />6 <br />20 <br />80,685 <br />268,950 <br />17 <br />58.3 <br />Campspass v. <br />(Shallow / Skeletal) <br />50 <br />6 <br />18 <br />23,511 <br />70,532 <br />Haplustepts <br />35 <br />4 <br />12 <br />10,972 <br />32,915 <br />21 <br />38.8 <br />Duffymont <br />70 <br />12 <br />var. <br />43,871 <br />-- <br />22 <br />289.4 <br />Duffymont <br />35 <br />4 <br />10 <br />54,464 <br />136,159 <br />Nortez <br />35 <br />6 <br />20 <br />81,695 <br />272,318 <br />26 <br />85.0 <br />1 Shawa <br />70 <br />18 <br />22 <br />143,975 <br />175,970 <br />Revised: 03/20/11 <br />