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• 2.04.6 <br />The following table presents the results of the geochemical analysis and limits <br />from published guidelines; <br />• <br />GEOCHEMICAL ANALYSIS <br /> Upper B- <br />Seam <br />Roof & Floor Lower B- <br />Seam <br />Roof & Floor Upper <br />B-Seam Coal <br />Parameter MIN MAX MIN MAX MIN MAX LIMIT REF. <br />pH Units 8.8 9.4 8.2 9.5 8.8 9.8 5-9 1 <br />Conductivity umhos/cm 660 1600 870 1180 390 620 8000 1 <br />Saturation Percentage 23.1 48 28.5 33.6 52.7 54.2 25-85 2 <br />Texture Class % Clay 8 26 10 26 6 7 35 2 <br />Sodium Adsorption <br />Ratio 19.1 33.3 21.3 34.2 10.5 27.6 10 1 <br />Selenium, ppm 0.1 0.2 0.03 0.1 <0.1 0.02 0.1 2 <br />Boron, ppm 6.8 12.0 5.5 12 0.3 3.7 5.0 1 <br />Nitrate, Nitrite, ppm <0.4 2.2 <0.4 0.9 0.66 0.7 50 1 <br />Molybdenum, ppm <0.1 0.2 0.07 0.1 0.08 0.1 1.0 1 <br />Arsenic, ppm 0.02 0.2 0.03 0.4 0.02 0.02 2.0 1 <br />Iron, ppm 16 44 32 68 7.3 10 - - <br />Lead, ppm 0.9 3.0 1.7 3.0 0.2 0.5 20 2 <br />Manganese, ppm 0.7 2.8 1.9 5.3 0.1 0.1 60 2 <br />Mercury, ppm <0.1 0.2 <0.1 0.1 <0.1 <0.1 0.5 2 <br />Zinc, ppm 0.9 2.9 0.8 2.3 0.5 1.1 40 2 <br />Acid Base Pot. U1000t 16 128 43.1 127 0.6 2.0 >-5 2 <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 /> <br />PR-08 <br />~ PPRov~ <br />gfz5/o 3 <br />2-04 - 20 - <br />7/03 <br />