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WHIRLWIND MINE, PERMIT NO. M-2007-044 <br /> THIRD QUARTER 2021 HYDROLOGICAL REPORT <br /> Attachment 6. Monitoring Well W-1 <br /> Dissolved Specific Oxygen- <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 /> 10/21/2008 Yes 73.22 7.96 10.5 0.95 1543 124 Sunny, Dry,see Table 3 <br /> 12/16/2008 Yes 74.44 7.73 9.9 1.47 1329 187 Overcast, 4"snow,see Table 3 <br /> 2/10/2009 1 Yes 74.73 7.82 10.1 0.93 1251 5 Sunny, Cold, 1-2"snowpack,see Table 3 <br /> 4/20/2009 Yes 75.00 7.34 10.9 0.13 1209 80 Sunny, Dry,see Table 3 <br /> 6/24/2009 Yes 74.96 7.63 10.9 -- 1157 -- Raining,cool, see Table 3 <br /> 9/11/2009 Yes 74.84 7.91 11.3 0.23 1219 -75 Sunny, dry, see Table 3 <br /> 12/10/2009 Yes 74.69 7.66 9.8 1.65 1182 80 Cold, overcast, see Table 3 <br /> 2/4/2010 Yes 74.40 7.01 10.7 0.61 1240 -74 Cold,clear skies, 3 ft of snow, see Table 3 <br /> 6/7/2010 Yes 73.98 7.73 12.2 0.25 1239 -111 Hot,clear skies, dry,see Table 3 <br /> 7/28/2010 No 73.48 NM NM NM NM NM Water level measurement only <br /> 11/4/2010 No 74.00 NM NM NM NM NM Water level measurement only <br /> 4/18/2011 No 73.94 NM NM NM NM NM Make-up for missed 1 Q1 1 monitoring <br /> 5/24/2011 Yes 73.77 7.85 11.0 0.11 1210 10 Ptly cloudy,warm, see Table 3 <br /> 8/16/2011 No 73.72 NM NM NM NM NM Water level measurement only <br /> 10/25/2011 No 73.94 NM NM NM NM NM Water level measurement only, Overcast, light rain <br /> 3/28/2012 No 73.98 NM NM NM NM NM Water level measurement only,weather dry and calm <br /> 5/30/2012 Yes 73.98 7.72 10.9 1.61 1252 NM ORP Probe Broken <br /> 8!7/2012 No 74.00 NM NM NM NM NM <br /> 11/14/2012 No 74.05 NM NM NM NM NM <br /> 3/18/2013 No 73.95 NM NM NM NM NM <br /> 6/17/2013 Yes 74.02 7.31 11.2 37.6% 1216 54.4 First bail the water was clear, but was muddy for the remainder of <br /> the purcle. <br /> 8/14/2013 N/A N/A N/A N/A N/A N/A N/A Field notes were lost. <br /> 11/8/2013 No 73.89 6.38 10.6 0.206 1186 50.5 <br /> 012014 No NM NM NM NM NM NM Inaccessible due to county road conditions. <br /> 6/18/2014 Yes 73.27 6.42 11.3 1.7 1349 75 <br /> 9/9/2014 No 74.19 6.04 14.1 1.4 1386 317 <br /> 11/13/2014 No 74.29 6.61 11.0 4.6 1219 272 <br /> 3/31/2015 No 74.36 6.50 11.4 5.0 1340 282 <br /> 5/29/2015 No 74.42 6.74 12.5 3.0 1438 328 <br /> 8/5/2015 Yes 74.54 7.40 12.2 2.5 1484 330 <br /> 11/9/2015 No 74.39 7.40 11.9 3.5 1250 326 <br /> 3/31/2016 No 74.40 7.13 11.05 1.7 1539 425 <br /> 6/1/2016 Yes 74.40 7.26 12.04 3.4 1432 421 <br /> 8/3/2016 No 74.60 6.51 15.94 2.8 1463 301 <br /> 10/12/2016 No 74.60 6.20 14.58 5.5 1507 290 <br /> 3/24/2017 No 74.66 6.15 12.75 4.2 1332 504 <br /> 6/7/2017 Yes 74.65 7.22 12.66 6.6 1502 375 <br /> 9/8/2017 No 74.50 6.95 15.25 5.0 1438 290 <br /> 10/20/2017 No 74.47 6.27 11.33 8.8 1376 80.3 <br /> 3/22/2018 No 74.69 7.22 1 10.88 4.8 1048 290 <br /> 6/20/2018 Yes 74.69 7.45 11.46 6.5 1014 -7.7 <br /> 9/7/2018 No 74.69 7.19 11.65 4.5 962 -349.9 <br />