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BEAR COAL COMPANY <br />• ALLW IAL WELL MONITORING DATA <br />VALUES LISTED ARE AVERAGES FOR THE YEAR <br /> AA1 AA1 AA1 AA1 AA1 AA1 AA1 <br /> 1983 1984 1985 1986 1987 1988 1989 MIN MAX MEAN <br />Alkalinity sa CaC03 343 268 240 i 496 485 884 0 884 388 <br />Bicarbonate as CaC03 343 268 240 496 485 860 240 860 449 <br />Boron, dissolved 0.26 0.29 0.24 0.52 0.39 1.91 0.24 1.91 0.60 <br />Calcium, dissolved 104 83 97 162 104 119 ~ 83 162 112 <br />Carbonate as CaC03 0 0 0 0 0 24 0 24 4 <br />Chloride 8 8 14 22 14 24 8 29 15 ' <br />Conductivity @ 25C 627 618 628 1820 1260 3310 618 3310 1377 <br />Floride 0.54 0.22 0.15 0.20 0.30 1.00 0.15 1.00 0.40 <br />Hardness as CaC03 305 271 313 576 728 271 728 439 <br />Magnesium, dissolved 0.11 0.16 17 42 21 105 0.11 105 31 <br />Nitrogen, amonia 0.05 0.04 0.13 0.08 0.13 0.09 0.04 0.13 0.09 <br />Nitrate as N disc 0.55 0.21 0.28 0.055 0.02 4.06 0.02 4.06 0.86 <br />Nitrate/Nitrite as N 0.055 0.02 4.1 0.02 4.10 1.39 <br />Nitrite as N, dissovved 0.01 0.01 0.04 0.01 0.04 0.02 <br />pH Ilabl 7.9 7.9 8.0 8.0 T.6 8.4 7.fi 8.4 8.0 <br />Phosphorus 0.23 0.15 0.07 0.03 0.01 0.005 0.005 0.23 0.08 <br />Potassium, dissolved 9.6 9.9 10.23 9.5 11 15 9.60 15.00 10.87 <br />SAR in xater 1.09 1.15 1.05 4.48 4.85 10.37 1.05 10.37 3.83 <br />Sodium, dissolved 43 43 40 248 205 636 40 636 202 <br />Sulfate 56 86 128 607 286 1266 56 1266 405 <br />Cations lauml 5.28 22.66 16.23 42.93 5.28 42.93 21.78 <br />Anions fsum) 5.03 23.28 16.1 44.94 5.03 44.94 22.34 <br />Cation-Anion Balance 2.42 1.52 0.4 2.29 0.40 2.42 1.66 <br />Solids, total dissolved 455 436 481 1316 888 2800 436 2800 1063 <br />• <br />Aluminum, total recov. 8.9 13.8 4.25 1.22 0.33 0.66 0.33 13.80 4.86 <br />Arsenic, total recov. 0.002 0.005 0.001 0.002 0.001 0.001 0.00 0.01 0.00 <br />Cadmium, total recov. 0.007 0.005 0.008 0.006 0.005 0.005 0.01 0.01 0.01 <br />Copper, total recov. 0.04 0.08 O.D3 0.07 0.01 0.01 0.01 0.08 0.04 <br />Iron, total recov. 14.5 24.3 8.4 3.6 1.91 0.86 0.86 24.30 8.93 <br />Lead, total recov. 0.08 0.04 0.03 0.02 0.02 0.02 0.02 0.08 0.04 <br />Manganese, total recov. 0.94 2.58 0.81 1.59 1.12 0.18 0.18 2.58 1.20 <br />Mercury, total recov. 0.001 0.001 0.0003 0.0002 0.0001 0.0001 0.0001 0.0010 0.0005 <br />Molybdenum, total recov 0.2 0.2 0.1 0.05 0.05 0.05 0.05 0.20 0.11 <br />Selenium, total recov. 0.002 0.002 0.002 0.001 0.001 0.003 0.001 0.003 0.002 <br />Zinc, total recov. 0.11 0.174 0.084 0.28 O.Ol 0.03 0.01 0.28 0.11 <br />t NO DATA TAKEN FOR 1986 <br />AA1.WK1 <br />2.04-30X NEW 6-29-90 <br />• <br />