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Table 4 -Continued. <br />• Overburden and Underburden Analyses <br />Sample I.D.: Top Material Lab No.: 81-1864-OB <br />Sample Date: lU/28/81 <br />Saturated Paste Extraction: AB-DTPA Extraction ( ppm): <br />Conductivity (mmhos/cm @ 25° ) 10.5 Arsenic 0.072 <br />pH (units) 5.5 Barium 2.8 <br />SAR 26.5 Cadmium 0.084 <br />Calcium (ppm) 234 Chromium < 0.02 <br />Magnesium (ppm) 112 Copper 7.76 <br />Potassium (ppm) 50 Iron 31.2 <br />Sodium (ppm) 1,940 Lead 2.36 <br /> Manganese 4.00 <br /> Molybdenum < 0.2 <br />Boron (ppm) 1.0 <br />5 <br />2 Nickel <br />l <br />i 5.20 <br />0 <br />0 <br />4 <br />Chloride (ppm) . en <br />um <br />Se . <br />1 <br />Fluoride (ppm) 0.1 Zinc 9.36 <br />Nitrate, Nitrogen (ppm) 5.6 <br /> Phosphorus 0.3 <br />Textural Analysis: Acid Extraction: <br />Sand % Analysis not performed Mercury 0.016 <br />Silt % due to la rge amounts <br />Clay % of coal i n sample Sulfur Forms: <br /> Pyritic Sulfur % 0.11 <br />Total Carbonate (as CaC03) 0.9 Sulfate Sulfur % 0.13 <br />Total Combustible Solids % 42.8 Organic Sulfur % 0.19 <br />Total Non-Combustible Solids % 57.2 Total Sulfur % 0.43 <br /> <br />2.04-24 <br />