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WHIRLWIND MINE, PERMIT NO. M-2007-044 <br /> THIRD QUARTER 2023 HYDROLOGICAL REPORT <br /> Attachment 8.Rajah 49 Mine Thornton Portal <br /> Dissolved peci isOxygen- <br /> Sampled Inflow Rate Field pH Temperature Oxygen Conductance Reduction <br /> Sample Date (Y/N) (gpm) (s.u.) (deg.C) (mg/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 89 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 6.4 919 939 NM OPR Probe Broken <br /> 6/17/2013 Yes <1 gpm 8.48 795 14.7% 928 -57 2 water was clear <br /> 6/17/2014 Yes <1 gpm 8.64 10.85 6.3 973 1462 <br /> 8/5/2015 Yes <lgpm 8.35 1298 3.61 1030 251 <br /> 6/2/2016 Yes <1qPM 8.17 10.04 160 888.8 214 <br /> 6/7/2017 Yes -<lgpm 8.15 1221 4.52 910.7 329 <br /> 6/20/2018 Yes -<lgpm 8.59 955 1204 642 -4 5 <br /> 6/25/2019 Yes <lgpm 8.80 105 446 859 196 <br /> 6/24/2020 Yes negligible 8.75 10.1 12.68 827 862 <br /> 7/13/2021 Yes negligible 8.01 1343 12.42 9075 428 <br /> 8/1/2022 Yes negligible 8.40 13.7 10.04 903.4 419 <br /> 7/25/2023 Yes negligible 8.77 13.13 10.26 8871 295 <br />