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TABLE III-E-8 <br /> • SUMMARY OF COAL BASIN <br /> WATER QUALITY DATA 1973 to 1980 <br /> DUTCH BEAR COAL <br /> Conducitivity 556 (25) 390 (37) 466 (44) <br /> (umhos/am) 207-1320 100-910 255-950 <br /> Total Hardness 91 (38) 133 (51) 182 (72) <br /> (ppm as CaCO3) 28-167 29-277 62-262 <br /> pH 8 . 3 (54) 8 . 1 (52) 8 .4 (63) <br /> (standard units) 7 . 3-8 . 9 7 . 1-9 . 3 8 . 1-9 . 5 <br /> Alkalinity 301(38) 145 (47) 201 (63) <br /> (ppm as CaCO3) 85-835 41-270 75-420 <br /> Total Suspended <br /> Sediment 989 (48) 4 255 (45) 261 (36) <br /> (ppm) 1-124005 0-3230 4-1170 <br /> • <br /> 1 Dutch Creek near preparation plant <br /> 2 Bear Creek near preparation plant <br /> 3 Coal Creek at preparation plant <br /> 5 Mean (# of observations) <br /> Range of observations <br /> • <br /> 40 <br />