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2016 Recommended Modifications to the West Elk Mine Hydrologic Monitoring Network 27 <br />mg/L. Total iron values are variable, ranging from ND to 0.71 mg/L. The time -series water <br />quality graphs for Spring E-13-2 are shown in Figure 22. <br />1 inure 12. Water Vuality to 5t)rin2 h- 13-) <br />600 <br />E 500 <br />H <br />z <br />400 <br />U <br />v 300 <br />c <br />O <br />U <br />u 200 <br />u <br />v <br />W 100 <br />9.5 <br />9.0 <br />m 8.5 <br />c <br />v 8.0 <br />N <br />a 7.5 <br />v <br />LL 7.0 <br />6.5 <br />60 <br />S S <br />-*-pH Date <br />Spring E-13-2 <br />0 <br />g Y <br />-i-EC Date <br />Spring E-13-2 <br />Spring E-13-2 <br />0.09 <br />0.08 <br />0.07 <br />a 0.06 <br />E <br />0.05 <br />O <br />0.04 <br />v <br />d <br />0.03 <br />O <br />N <br />H 0.02 <br />O <br />0.01 <br />0 <br />t Diss. Iron Date <br />350 <br />300 <br />m <br />E <br />m 250 <br />v_ <br />tq 200 <br />v <br />6 150 <br />N <br />H <br />100 <br />A <br />F <br />50 <br />0 <br />Spring E-13-2 <br />g <br />-*-TDS Date <br />Spring E-13-2 <br />40 -- <br />J 35 <br />rn <br />E <br />m 30 <br />a <br />to <br />25 <br />v <br />17 20 <br />a <br />� 15 <br />10 <br />O <br />F <br />5 <br />0 <br />--4-TSS Date <br />Spring E-13-2 <br />August 2016 HydroGeo, Inc. <br />0.8 <br />-------------------- <br />0.7 <br />0.6 <br />0.5 <br />E <br />0.4 <br />- <br />0 <br />0,3 <br />H <br />0.2 <br />0.1 <br />0 <br />3 <br />-4. -Tot. Iron <br />Date <br />August 2016 HydroGeo, Inc. <br />