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<br /> <br /> BEAR COAL COMPANY <br /> QUARTERLY SAMPLE RESULTS ' <br /> SITE: AAII <br /> <br /> Analysis Analysis Analysis Analysis Analysis <br />PARAMETERS (mg/1) 10/22/82 2/28/83 8/18/83 10/31/83 1/26/84 <br />Laboratory No: 83-2832-W 83-0396-W 83-2878-W 83-4084-W 84-OI86-W Average Minimum Maximum <br /> <br />Alkalinity (as CaC03) 213 173 255 240 223 221 173 255 <br />Aluminum 14.5 3.9 4.6 5.2 5.3 6.1 4.6 14.5 <br />Arsenic - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <br />Bicarbonate (as CaCO ) <br />3 213 173 255 240 223 221 173 255 <br />Boron 0.13 0.05 0.09 0.06 . 0.16 0.10 0.05 0.16 <br />Cadmium <0.005 <0.005 <0.005 0.013 ~ 0.007 <0.005 <0.005 0.013 <br />Calcium 61 51 80 63 77 66 51 80 <br />Carbonate (as CaCO ) <br />3 0 0 0 0 0 0 0 0 <br />Chloride <br />1 2 2 4 4 11 5 2 11 <br />Conductivity 420 408 550 400 290 414 290 550 <br />Copper 0.08 0.06 0.02 0.05 0.02 0.05 0.02 .0.08 <br />Fluoride 0.14 0.21 0.10 0.34 0.57 0.39 0.14 0.70 <br />Hardness (as CaCO ) 185 156 241 199 230 202 156 230 <br />Iron 3 20.3 1.61 5.61 7.09 9.10 8.74 1.61 20.3 <br />Lead 0.11 0.05 <0.02 0.11 0.05 0.06 <0.02 0.1.1 <br />Magnesium 8 7 10 10 9 9 1 10 <br />Manganese 1.89 1.18 0.80 1.02 0.94 1.17 0.94 1.89 <br />Mercury <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <O.OOI' <br />Molybdenum <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <br />Nitrogen, Ammonia 0.72 --- --- 0.10 <0.02 0.47 <0.02 0.72 <br />Nitrogen, Nitrate <0.02 0.10 0.19 1.11 0.37 0.35 <a.02 1.11 <br />pH (units) 7.0 7.5 7.6 8.3 7.6 7.6 7.0 8.3 <br />Phosphorus, Ortho 0.04 0.09 0.03 0.16 0.04 0.07 0.03 0.16 <br />Potassium 2 1.7 0.9 1.6 3.9 1.5 1.9 0.9 3.9 <br />SAR (requires Ca, Mg) 0.61 0.46 0.57 0.69 0.46 0.56 0.46 0.61 <br />Selenium <0.002 0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <br />Sodium 19 13 20 22 16 18 13 22 <br />Solids, Dissolved 230 370 310 280 270 292 230 370 <br />Solids, Suspended , --- 720 400 --- --- 560 400 720 <br />Solids, Volatile ~ --- 355 120 --- --- 237 120 355 <br />Sulfate <4 8 51 6 21 17 <4 51 . <br />Zinc 0.276 0.114 0.090 0.089 0.049 0.124 0.049 0.276 - <br />Note: Metals are total recoverable. 2 (umhos/cm @ 25°C) <br /> (No Units ) <br /> • • <br />