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Monitoring <br />Date <br />Sampled <br />(Y /N) <br />Inflow Rate <br />(gpm) <br />Field pH <br />(s.u.) <br />Temperature <br />(deg. C) <br />Dissolved <br />Oxygen <br />(mg /L) <br />Specific <br />Conductance <br />(uS /cm) <br />Oxygen - <br />Reduction <br />Potential (mV) <br />Comments <br />3/10/2008 <br />No <br />6 to 7 <br />NM <br />NM <br />NM <br />NM <br />NM <br />Sunny, Ave. of 2 feet snowpack <br />6/19/2008 <br />No <br />7.2 <br />7.42 <br />11.0 <br />7.22 <br />524 <br />126 <br />Sunny, Dry <br />9/8/2008 <br />No <br />5.2 <br />8.00 <br />11.9 <br />9.49 <br />544 <br />166 <br />Sunny, Dry <br />12/15/2008 <br />No <br />8.2 <br />7.96 <br />4.8 <br />9.42 <br />532 <br />97 <br />Snowing, 4" snowpack <br />2/10/2009 <br />No <br />8.5 <br />5.22 <br />4.7 <br />9.30 <br />562 <br />126 <br />Sunny, Cold, 3 -4" snowpack <br />4/20/2009 <br />No <br />8.3 <br />7.64 <br />6.6 <br />9.16 <br />546 <br />190 <br />Sunny, Dry <br />8/11/2009 <br />No <br />5.9 <br />7.68 <br />12.0 <br />8.25 <br />532 <br />190 <br />Sunny, Hot, Dry <br />12/1/2009 <br />No <br />7.9 <br />8.11 <br />4.8 <br />10.54 <br />548 <br />115 <br />Cold, clear skies <br />2/2/2010 <br />No <br />7.9 <br />6.73 <br />4.7 <br />10.71 <br />526 <br />177 <br />Cold, clear skies, 3 ft of snow <br />6/2/2010 <br />No <br />8.3 <br />7.53 <br />8.8 <br />11.62 <br />554 <br />200 <br />Sunny, Dry <br />7/28/2010 <br />No <br />6.8 <br />7.68 <br />12.6 <br />7.57 <br />535 <br />114 <br />Sunny, Dry <br />11/4/2010 <br />No <br />7.0 <br />7.94 <br />7.1 <br />8.66 <br />535 <br />190 <br />Sunny, Dry <br />4/18/2011 <br />No <br />8.1 <br />7.59 <br />6.6 <br />9.23 <br />533 <br />NM* <br />Make -up for missed 1Q11 monitoring, <br />Sunny, warm, clear skies <br />5/24/2011 <br />No <br />9.2 <br />7.81 <br />8.0 <br />8.43 <br />551 <br />62 <br />Light showers, warm <br />8/15/2011 <br />No <br />7.9 <br />7.59 <br />12.2 <br />7.07 <br />560 <br />203 <br />Partly cloudy, warm <br />10/25/2011 <br />No <br />8.1 <br />7.51 <br />11.8 <br />7.64 <br />545 <br />198 <br />Overcast, light rain <br />4. DP Spring <br />* - ORP Probe broke during 4/18/11 Monitoring Event. <br />WHIRLWIND MINE, PERMIT NO. M- 2007 -044 <br />FOURTH QUARTER 2011 HYDROLOGICAL REPORT <br />