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• <br />0 <br />2.04.6 <br />GEOCHEMICAL ANALYSIS <br />Upper B- <br />Seam <br />Roof & Floor <br />Lower B- <br />Seam <br />Roof & Floor <br />Upper <br />B -Seam Coal <br />Parameter <br />MIN <br />MAX <br />MIN <br />MAX <br />MIN <br />MAX <br />LIMIT <br />REF. <br />pH Units <br />8.8 <br />9.4 <br />8.2 <br />9.5 <br />8.8 <br />9.8 <br />5 -9 <br />1 <br />Conductivity umhos /cm <br />660 <br />1600 <br />870 <br />1180 <br />390 <br />620 <br />8000 <br />1 <br />Saturation Percentage <br />% <br />23.1 <br />48 <br />28.5 <br />33.6 <br />52.7 <br />54.2 <br />25 -85 <br />2 <br />Texture Class % Clay <br />8 <br />26 <br />10 <br />26 <br />6 <br />7 <br />35 <br />2 <br />Sodium Adsorption <br />Ratio <br />19.1 <br />33.3 <br />21.3 <br />34.2 <br />10.5 <br />27.6 <br />10 <br />1 <br />Selenium, ppm <br />0.1 <br />0.2 <br />0.03 <br />0.1 <br /><0.1 <br />0.02 <br />0.1 <br />2 <br />Boron, ppm <br />6.8 <br />12.0 <br />5.5 <br />12 <br />0.3 <br />3.7 <br />5.0 <br />1 <br />Nitrate, Nitrite, ppm <br /><0.4 <br />2.2 <br /><0.4 <br />0.9 <br />0.66 <br />0.7 <br />50 <br />1 <br />Molybdenum, ppm <br /><0.1 <br />0.2 <br />0.07 <br />0.1 <br />0.08 <br />0.1 <br />1.0 <br />1 <br />Arsenic, ppm <br />0.02 <br />0.2 <br />0.03 <br />0.4 <br />0.02 <br />0.02 <br />2.0 <br />1 <br />Iron, ppm <br />16 <br />44 <br />32 <br />68 <br />7.3 <br />10 <br />-- <br />- <br />Lead, ppm <br />0.9 <br />3.0 <br />1.7 <br />3.0 <br />0.2 <br />0.5 <br />20 <br />2 <br />Manganese, ppm <br />0.7 <br />2.8 <br />1.9 <br />5.3 <br />0.1 <br />0.1 <br />60 <br />2 <br />Mercury, ppm <br /><0.1 <br />0.2 <br /><0.1 <br />0.1 <br /><0.1 <br /><0.1 <br />0.5 <br />2 <br />Zinc, ppm <br />0.9 <br />2.9 <br />0.8 <br />2.3 <br />0.5 <br />1.1 <br />40 <br />2 <br />Acid Base Pot. t/1 000t <br />16 <br />128 <br />43.1 <br />127 <br />0.6 <br />2.0 <br />> -5 <br />2 <br />A chemical analysis of the stratum immediately above and below the Upper <br />and Lower B -Seam and the B -Seam Coal was performed. See Exhibit 6 for <br />a tabulation of the laboratory reports and the locations of the drill holes. <br />The following table presents the results of the geochemical analysis and <br />limits from published guidelines: <br />Reference: 1. Wyoming, Department of Environmental Quality, (DEQ), <br />guideline NO. 1 dated November 1984. <br />2. Montana, Department of State Lands Guidelines. <br />PR -12 <br />A PPRovE/� <br />11/l6 /ra <br />2.04-24- <br />06/10 <br />