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WHIRLWIND MINE,PERMIT NO.M-2007-044 <br /> THIRD QUARTER 2020 HYDROLOGICAL REPORT <br /> Attachment 8.Rajah 49 Mine Thornton Portal <br /> Dissolved Specific Oxygen- <br /> Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction j <br /> Sample Date YM 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 apm 8.9 7.8 10.12 889 153 Hot,clear skies,dry,see Table 5 <br /> 5/24/2011 Yes negligible 9.16 11.1 8.03 906 120 Ptly cloudy,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 <lqpm 8.35 12.98 3.61 1030 251 <br /> 6/2/2016 Yes <lgpm 8.17 10.04 1.60 888.8 214 <br /> 6/7/2017 Yes <lgpm 8.15 12.21 4.52 910.7 329 <br /> 6/20/2018 Yes <lgpm 8.59 9.55 12.04 642 -4.5 <br /> 6/25/2019 Yes <lgpm 8.80 10.5 4.46 859 196 <br /> 6/24/2020 Yes negligible 8.75 10.1 12.68 827 86.2 <br />