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Table 4 <br />• Overburden and Underburden Analyses <br />Sample I.D.: Bottom Material Lab No.: 81-1863-OB <br />Sample Date: 10/28/81 <br />Saturated Paste Extraction: AB-DTPA Extraction ( ppm): <br />Conductivity (mmhos/cm @ 25°) 4.9 Arsenic 0.052 <br />pH (units) 7.5 Barium 18.8 <br />SAR 33.1 Cadmium 0.036 <br />Calcium (ppm) 38 Chromium 0.08 <br />Magnesium (ppm) 5 Copper 5.96 <br />Potassium (ppm) 16 Iron 15.0 <br />Sodium (ppm) 809 Lead 1.36 <br /> Manganese 0.60 <br /> hlolybdenum < 0.2 <br />Boron (ppm) 0.5 Nickel 0.76 <br />• <br />Chloride (ppm) 3 Selenium 0.014 <br />Fluoride (ppm) < 0.1 Zinc 1.49 <br />Nitrate, Nitrogen (ppm) 4.1 <br /> Phosphorus 0.3 <br />Textural Analysis: Acid Extraction: <br />Sand °~ Analysis n ot performed Mercury 0.016 <br />Silt °~ due to large amounts <br />Clay % of coal in sample Sulfur Forms: <br /> Pyritic Sulfur % 0.11 <br />Total Carbonate (as CaC03) 1.1 Sulfate Sulfur % 0.04 <br />Total Combustible Solids % 23.8 Organic Sulfur % 0.41 <br />Total Non-Combustible Solids % 76.2 Total Sulfur % 0.56 <br /> <br />2.04-23 <br />