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• <br />2.04.6 <br />(3)(a)(iii)(D) <br />A chemical analysis of the stratum immediately above and <br />below the coal seam to be mined was performed on the core <br />from three drill holes, DH-15 16, & 25. See Exhibit 6 <br />for a copy on the laboratory reports <br />The following table presents the results of the <br />geochemical analysis and limits from published <br />guidelines: <br />• <br />• <br />GEOCHEMICAL ANALYSIS <br />Parameter MIN MAX LIMIT REF. <br />pH Units B.0 8.7 5-9 1 <br />Conductivity umhos/cm 2900 6000 8000 1 <br />Saturation Percentage $ 28.2 38.3 25-85 2 <br />Texture Class $ Clay 7 12 35 2 <br />Sodium Adsorption Ratio 9.9 29.0 10 1 <br />Selenium mg/kg -0.1 -0.1 0.1 2 <br />Boron mg/kg 1.1 3.0 5.0 1 <br />Nitrate, Nitrite mg/kg 0.0 12.3 50 1 <br />Molybdenum mg/kg -0.1 -0.1 1.0 1 <br />Arsenic mq/kg -0.1 -0.1 2.0 1 <br />Iron mg/kg 74 587 -- - <br />Lead mg/kg 1.0 4.5 20 2 <br />Manganese mg/kg 1.4 24.1 60 2 <br />Mercury mg/kg -0.01 -0.01 0.5 2 <br />Zinc mg/kg 1.7 5.7 40 2 <br />Reference: 1. Wyoming, Department of <br />Quality, (DEQ), guideline <br />November 1984. <br />2. Montana, Department of <br />Guidelines. <br />rsnxxr wecxurxox 2-04 - 20 - <br />Environmental <br />NO. 1 dated <br />State Lands <br />