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<br /> <br /> <br />1 <br />.' <br />.' <br /> <br />~~ <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />TABLE 2 <br />HISTORIC MINE AREA COAL AQUIFER WATER QUALITY DATA <br /> 1987 1988 1989 1990 ]991 7992 <br />Temp (deg C) 6.4 7.8 7.4 6.6 9 `l1 <br />pH (su) 8.0 7.5 7.2 6.0 7.7 8.4 <br />E.C. (umho/cm) 614 843 999 667 640 767 <br />TDS 475 473 540 441 630 674 <br />SAR 3.92 4.01 5.00 4.06 6.46 10.63 <br />Ca 35 50 40 38 37 26 <br />Na 105 124 139 111 167 220 <br />Mg 12 1} 11 9 10 6 <br />K 3 4 3 3 4 3 <br />SO4 111 127 98 107 112 93 <br />Cl 10 13 13 <7.1 IS 11 <br />CO3 2 2 0 10 5 29 <br />HCO3 218 270 266 237 397 450 <br />F - - - - 1.6 <br />NO3M <0.14 0.09 O.I3 <0.03 0.39 1.47 <br />Fe (diss) 0.64 1.04 0.85 0.69 0.76 0.19 <br />Mu (diss) 0.55 0.46 0.35 0.30 0.28 0.05 <br />AI <0.070 <0.065 <0.065 <0.038 0.09 <0.05 <br />Ba 0.21 0.24 0.24 0.22 0.13 0.36 <br />B 0.30 0.30 0.30 0.25 0.26 0.17 <br />Cd <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <br />Cr <0.01 <0.01 <O.OI <0.01 <0.01 <0.01 <br />Cu <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Pb <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <br />Hg <0.0003 <0.0002 <0.0002 <0.0001 <0.0001 0.0003 <br />Mo <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <br />Ni <0.02 <0.02 <0.42 <0.02 <0.02 <0.02 <br />P (ortho) <0.163 0.293 0.293 0.379 0.416 0.38 <br />V <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Notes: All values in mg/I unless otherwise Hood <br />1987, 1986, 1969, 1990 and 1991 values represent means from wells 79.27, 32, 36 and 61 <br />1992 values only represeot well 79~i1 <br />c~.oRCw)\cua~tw.nsv <br />oVa+s ,.. <br />