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~ *Y' • <br />uiu <br />1633 Terra Avenue <br />lnter•(1lountaln Laborotorles.lnc. <br />Sheridan, Wyoming 82801 <br />PEABODY COAL COMPANY <br />FLAGSTAFF, ARTZONA <br />NINE: SENECA <br />Noveuber 25, 1991 <br /> pH EC Total T.S. Neut. T.S. Sulfate Pyritic Organic PyrS PyrS <br /> rhos/c~ Sulfur AB Pot. ABP Sulfur Sulfur Sulfur AB A8P <br />Lab No. Location Depths @ 25'C t t/1000t t/1000t t/1000t t t t t/1000t t/1000t <br />65329 MC-141 0.0-4.D 7.1 3.59 0.15 4.69 26.7 22.1 <br />ro 65330 MC-148 0.0-4.0 7.3 3.18 0.01 0.31 29.5 29.1 <br />'4, 65331 NC-149 0.0-4.0 7.3 1.47 0.65 20.3 7.52 -12.8 0.63 0.01 0.01 0,31 7.20 <br />b5332 MC-150 0.0-4,0 7.1 3.13 0.56 17.5 15.4 -2.09 0.07 0.41 0.08 12.8 2.60 <br />65333 NC-150E' 0.0-4.0 7.0 3.35 0.55 17.2 17.2 0.02 <br />65334 NC-151 0.0-4,0 6.9 3.58 0.65 20.3 17.6 -2.61 0.12 0.44 0.09 13.) 3.69 <br />65335 NC-152 0.0-4.0 7.1 3.16 0.53 16.6 20.7 4.17 <br />65336 MC-153 0.0-4.0 7.0 2.82 0.62 19.4 16.8 -2.58 0.05 0.48 0.09 15,0 1.79 <br />65337 MC-154 0.0-4.0 5.9 3.10 0.40 12.5 3.44 -9.05 0.11 0.21 0.08 6.56 -3.12 <br />65338 MC-155 0.0-4.0 5.9 3.46 0.31 11.6 4.94 -6.62 0.18 0.14 0.05 4.37 0.57 <br />65339 MC-156 0.0-4.0 4.8 2.35 0.20 6.25 1.88 -4.37 0.13 0.05 0.02 1.56 0.32 <br />65340 MC-157 0.0-4.0 4.4 6.80 0.92 28.7 1.00 -27.7 0.44 0.36 0,12 11,2 -10.2 <br />65341 MC-158 0.0-4.0 6.0 4.21 0.68 11.2 5.90 -15.3 0.18 0.40 0.10 12.5 -6.60 <br />65342 MC-159 0.0-4.0 5.4 3.61 0.52 16.2 4.05 -12.2 0.16 0.26 0.10 8.12 -4,07 <br />65343 MC-160 0.0-4.0 6.1 0.78 0.05 1.56 3.70 2.14 <br />'Sample WC-150E is a field-split blind duplicate sample of WC-150. <br />Tel. (307) 872-8945 <br />Page 2 of 2 <br />~, <br />Abbreviations used in acid base accounting; T.S.= Total Sulfur, AB= Acid Base, ABP= Acid Base Potential, PyrS= Pyritic Sulfur, Pyr+Org= Pyretic Sulfur + Organic Sulfur, <br />Neut. Pot.= Neutralization Potential <br />