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2016 Recommended Modifications to the West Elk Mine Hydrologic Monitoring Network 7 <br />Figure 2. Water Quality in Spring G-25 <br />2.500 <br />E <br />2,000 <br />z <br />1,500 <br />U <br />r <br />c <br />U 1,000 <br />u <br />u <br />_5 500 <br />W <br />9.0 <br />8.5 <br />E <br />8.0 <br />n7 <br />Z 7.5 <br />2 <br />a <br />v 7.0 <br />LL <br />65 <br />6.0 <br />0 3 S o <br />Date <br />Baseline Max (tab) Baseline Min (tab) --a— pH <br />0 <br />—Baseline Max t EC Date <br />Spring G-25 <br />Spring G-25 <br />Spring G-25 <br />1.400 <br />-- <br />1.700 <br />J <br />rn <br />E 1.200 <br />g <br />0 1,100 <br />v7 <br />0 1,000 <br />0 <br />900 <br />O <br />600 <br />--- ----- <br />700 <br />600 <br />_11-4mn <br />LI- <br />—Tf1S Date <br />Note: Baseline pre -2000 data, adapted from WWE (2001). <br />Not Detected (ND) values graphed as zero. <br />Spring G-25 <br />1.2 -- <br />1 <br />0.8 <br />m <br />E <br />C o.s <br />2 <br />m 04 <br />0 <br />02 <br />0 <br />3 <br />—Baseline Max—0.—Tot. Iron Date <br />August 2016 HydroGeo, Inc. <br />