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WHIRLWIND MINE,PERMIT NO.M-2007-044 <br /> THIRD QUARTER 2023 HYDROLOGICAL REPORT <br /> Attachment 6.Monitoring Well W-1 <br /> Dissolved peci is xygen- <br /> Monitoring Sampled Water Level Field pH Temperature Oxygen(mg/L Conductance Reduction <br /> Date (Y/N) (ft BTOC) (s.u.) (deg.C) or%) (US/cm) Potential(mV) Comments <br /> 6/25/2019 Yes 74.59 7.53 11.04 7.0 1265 176.6 <br /> 9/13/2019 No 74.70 7.03 11.20 2.6 1376 215 <br /> 11/8/2019 No 74.80 761 11.93 2.1 1475 261 <br /> 3/27/2020 No 74.70 725 10.06 2.7 1350 115 <br /> 6/24/2020 Yes 7488 763 11.12 3.7 1310 -250 <br /> 9/11/2020 No 7502 772 10.49 7.1 1380 54 <br /> 11/6/2020 No 7483 6.93 11.55 2.2 1610 143 <br /> Q1 2021 No NM NM NM NM NM NM Inaccessible due to county road conditions <br /> 6/18/2021 No 7495 7.71 11.65 3.0 1519 -39 8 <br /> 7/13/2021 Yes 7450 696 15.01 2.4 1542 480 <br /> 9/9/2021 No 7480 787 12.41 2.0 1537 479 <br /> 11/9/2021 No 75.30 681 12.76 6.8 1572 1649 <br /> 3/29/2022 Yes 7530 700 10.66 778 13600 1275 <br /> 6/29/2022 No 7520 782 13.18 1 72 1557.0 2920 <br /> 8/1/2022 Yes 75.52 783 13.26 2.46 13080 456.0 <br /> 11/16/2022 Yes 74.90 684 10.01 1 92 1385.0 240.0 <br /> Q1 2023 No NM NM NM NM NM NM Inaccessible due to county road conditions. <br /> 5/10/2023 Yes 7545 791 11.41 027 968.0 16.2 <br /> 7/25/2023 Yes 7565 8.01 13.14 2.3 1361 3 3190 <br /> NM= Not Measured <br />