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WHIRLWIND MINE, PERMIT NO.M-2007-044 <br /> SECOND QUARTER 2018 HYDROLOGICAL REPORT <br /> Attachment&Rajah 49 Mine Thornton Portal <br /> Dissolved Specific Oxygen- <br /> Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction <br /> Sample Date Y/N m s.u. (deg.C m /L uS/cm Potential mV Comments <br /> 9/21/2009 Yes 1-2 gpm 8.58 10.6 7.71 938 130 Sunny,dry,see Table 5 <br /> 6/30/2010 Yes 1-2 gpm 8.9 7.8 10.12 889 153 Hot,clear skies,dry,see Table 5 <br /> 5/24/2011 Yes ne li ible 9.16 11.1 8.03 906 120 Pt1V cloud ,warm,see Table 5 <br /> 5/30/2012 Yes <1 gpm 9.67 6.4 9.19 939 NM OPR Probe Broken <br /> 6/17/2013 Yes <1 gpm 8.48 7.95 14.7% 928 -57.2 water was clear <br /> 6/17/2014 Yes <1 gpm 8.64 10.85 6.3 973 146.2 <br /> 8/5/2015 Yes <lgpm 8.35 12.98 3.61 1030 251 <br /> 6/2/2016 Yes <lqpm 1 8.17 1 10.04 1 1.60 1 888.8 1 214 <br /> 6/7/2017 1 Yes <1qPM 8.15 12.21 4.52 910.7 329 <br /> 6/20/2018 1 Yes <lgpm 8.59 9.55 12.04 642 1 -4.5 <br />