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• 2.04.6 <br />(3)(a)(iii)(A)S(H) <br />See drill hole logs presented on Map 08 Geologic Cross <br />Section and Monitoring Hole Completion Drawings in <br />Exhibit 3. <br />(3)(a)(iii)(C) <br />• <br />Three drill holes from the D-2 Seam were cored and <br />analyzed for forms of sulfur. The cores were obtained in <br />late 1975 or early 1976 and analyzed by Hazen Research, <br />Inc. from Golden, Colorado. See Exhibit 6 for a copy on <br />the laboratory reports. The results of the analysis <br />follows: <br />SULFUR FORMS D-2 SEAM <br /> Sulfur Forms ($) <br />Drill Hole Pyritic Organic Sulfate Total <br />DH-12 0.01 0.35 0.00 0.36 <br />DH-22A 0.02 0.38 0.00 0.40 <br />DH-SA 0.05 0.39 0.00 0.44 <br />Reference: Reclaiming mine soils and overburden in the <br />western United States, by R. Dean Williams and Gerald E. <br />Schuman, Editors, for the following discussion regarding <br />acid forming material in the D-2 Seam coal. <br />iron pyrite is an acid forming material. The reaction of <br />the pyritic sulfur is: <br />2FeS~+ 7~OI + 7HI ---> 2Fe(OH)I + 2H=SO, <br />Or, commonly stated, Iron Pyrite in the presence of <br />oxygen and water will be oxidized to Ferric Hydroxide and <br />Sulfuric Acid. This reaction may be either chemical as <br />described above or microbial. Several species of <br />bacteria gain energy from the oxidation of Iron Pyrite to <br />form the above reaction products. <br />• P6MIT APPLIGTI011 2-04 - 17 - <br />