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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />Table 4 <br />HISTORIC MINE AREA ALLUVIAL WATER QUALITY DATA <br />1986 1987 1988 1989 1990 *1991 <br />Temp (deg C) 10.3 1z.3 s.3 s a.s <br />pH (SU) 7.2 7.3 7.9 7.3 8.2 <br />E.C. (UmhO/Cm) 1606 2535 1883 3530 1131 <br />TDS 1535 1996 188 3218 502 <br />$AR 6.09 6.68 1.30 6.00 3.36 <br />Ca 113 136 17 303 37 <br />Na 346 438 25 531 101 <br />Mg 89 122 7 185 20 <br />K 2 a 5 8 a <br />SO4 772 600 91 2116 257 <br />CI 20 30 3 33 6 <br />CO3 0 0 0 0 0 <br />HCO3 593 1087 46 292 124 <br />NO3/N <0.420 0.33 1.07 0.03 0.15 <br />Fe (diss) 0.33 1.01 0.33 o.os o.so <br />Mn (diss) o.aa 3.70 0.03 0.03 o.oz <br />AI <0.26 <0.05 0.39 0.08 0.94 <br />Ba o.oa o.07 o.1o 0.07 0.02 <br />B o.28 0.20 0.03 o.ofi o.os <br />Cd <0.005 <0.005 <0.005 <0.005 <0.005 <br />Cr <0.01 <0.01 <0.01 <0.01 <0.01 <br />CU <0.03 0.02 <0.01 <0.01 <0.01 <br />Pb <0.02 <0.02 <0.02 <0.02 <0.02 <br />Hg <0.0002 <0.0002 <0.0002 <0.0001 <0.0001 <br />Mo <o.os <o.os <o.os <o.os <o.os <br />NI <0.02 <0.02 <0.02 <0.02 <0.02 <br />P (ortho) o.os <o.oz o.1s o.o3s o.12s <br />v <0.01 <0.01 <0.01 <0.01 <0.01 <br />Note: All values in mg/I unless otherwise noted <br />* No data collected in 1991 -well had insufficient water for sampling <br />