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WHIRLWIND MINE, PERMIT NO. M- 2007 -044 <br />SECOND QUARTER 2013 HYDROLOGICAL REPORT <br />Attachment 6. Monitoring Well W -1 <br />Monitoring <br />Date <br />Sampled <br />(Y/N) <br />Water Level <br />(ft BTOC <br />Field pH <br />(S.U.) <br />Temperature <br />(deg. C <br />Dissolved <br />Oxygen <br />m <br />Specific <br />Conductance <br />(US/cm) <br />Oxygen - <br />Reduction <br />Potential mV <br />Comments <br />10/21/2008 <br />Yes <br />73.22 <br />7.96 <br />10.5 <br />0.95 <br />1543 <br />124 <br />Sunny, Dry, see Table 3 <br />12/16/2008 <br />Yes <br />74.44 <br />7.73 <br />9.9 <br />1.47 <br />1329 <br />187 <br />Overcast, 4" snow, see Table 3 <br />2/10/2009 <br />Yes <br />74.73 <br />7.82 <br />10.1 <br />0.93 <br />1251 <br />5 <br />Sunny, Cold, 1 -2" snowpack, see Table <br />3 <br />4/20/2009 <br />Yes <br />75.00 <br />7.34 <br />10.9 <br />0.13 <br />1209 <br />80 <br />Sunny, Dry, see Table 3 <br />6/24/2009 <br />Yes <br />74.96 <br />7.63 <br />10.9 <br />-- <br />1157 <br />-- <br />Raining, cool, see Table 3 <br />9/11/2009 <br />Yes <br />74.84 <br />7.91 <br />11.3 <br />0.23 <br />1219 <br />-75 <br />Sunny, dry, see Table 3 <br />12/10/2009 <br />Yes <br />74.69 <br />7.66 <br />9.8 <br />1.65 <br />1182 <br />80 <br />Cold, overcast, see Table 3 <br />2/4/2010 <br />Yes <br />74.40 <br />7.01 <br />10.7 <br />0.61 <br />1240 <br />-74 <br />Cold, clear skies, 3 ft of snow, see Table <br />3 <br />6/7/2010 <br />Yes <br />73.98 <br />7.73 <br />12.2 <br />0.25 <br />1239 <br />-111 <br />Hot, clear skies, dry, see Table 3 <br />7/28/2010 <br />No <br />73.48 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Water level measurement only <br />11/4/2010 <br />No <br />74.00 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Water level measurement only <br />4/18/2011 <br />No <br />73.94 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Make -up for missed 1 Q11 monitoring <br />5/24/2011 <br />Yes <br />73.77 <br />7.85 <br />11.0 <br />0.11 <br />1210 <br />10 <br />Ptly cloudy, arm, see Table 3 <br />8/16/2011 <br />No <br />73.72 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Water level measurement only <br />10/25/2011 <br />No <br />73.94 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Water level measurement only, <br />Overcast, light rain <br />3/28/2012 <br />No <br />73.98 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Water level measurement only, weather <br />dry and calm <br />5/30/2012 <br />Yes <br />73.98 <br />7.72 <br />10.9 <br />1.61 <br />1252 <br />NM <br />ORP Probe Broken <br />8/7/2012 <br />No <br />74.00 <br />NM <br />NM <br />NM <br />NM <br />NM <br />11/14/2012 <br />No <br />74.05 <br />NM <br />NM <br />NM <br />NM <br />NM <br />3/18/2013 <br />No <br />73.95 <br />NM <br />NM <br />NM <br />NM <br />NM <br />6/17/2013 <br />Yes <br />74.02 <br />7.31 <br />11.2 <br />37.6% <br />1216 <br />54.4 <br />first bail the water was clear, but was <br />Imuddyfor the remainder of the purge <br />