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46 2.04.6 <br />s <br />• <br />GEOCHEMICAL ANALYSIS <br />Parameter <br />MIN <br />MAX <br />LIMIT <br />REF. <br />pH Units <br />8.0 <br />8.7 <br />5 -9 <br />1 <br />Conductivity umhos /cm <br />2900 <br />6000 <br />8000 <br />1 <br />Saturation Percentage % <br />28.2 <br />38.3 <br />25 -85 <br />2 <br />Texture Class % Clay <br />7 <br />12 <br />35 <br />2 <br />Sodium Adsorption Ratio <br />9.9 <br />29.0 <br />10 <br />1 <br />Selenium mg /kg <br />-0.1 <br />-0.1 <br />0.1 <br />2 <br />Boron mg /kg <br />1.1 <br />3.0 <br />5.0 <br />1 <br />Nitrate, Nitrite mg /kg <br />0.0 <br />12.3 <br />50 <br />1 <br />Molybdenum mg /kg <br />-0.1 <br />-0.1 <br />1.0 <br />1 <br />Arsenic mg /kg <br />-0.1 <br />-0.1 <br />2.0 <br />1 <br />Iron mg /kg <br />74 <br />587 <br />-- <br />- <br />Lead mg /kg <br />1.0 <br />4.5 <br />20 <br />2 <br />Manganese mg /kg <br />1.4 <br />24.1 <br />60 <br />2 <br />Mercury mg /kg <br />-0.01 <br />-0.01 <br />0.5 <br />2 <br />Zinc mg /kg <br />1.7 <br />5.7 <br />40 <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 />PR-12 2.04-24- 02/10 <br />