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¦K 111 (INS IM M J= ?l ¦ ¦Il 11111, 11111111: 1111; <br />WHIRLWIND MINE, PERMIT NO. M-2007-044 <br />FOURTH QUARTER 2010 HYDROLOGICAL REPORT <br />5. PR Spring <br /> Dissolved Specific Oxygen- <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 /> Sunny, Ave. of 1 foot snowpack, see <br />3/10/2008 Yes 4 to 5 8.1 8.6 NM NM NM attached tables <br />6/19/2008 Yes 4.7 7.90 13.8 9.95 762 140 Sunny, Dry, see attached tables <br />9/8/2008 Yes 4.1 8.36 13.4 8.39 883 166 Sunny, Dry, see attached tables <br /> Overcast, 4" snowpack, see attached <br />12/15/2008 Yes 4.5 8.31 9.1 8.20 790 -35 tables <br /> Sunny, Cold, 1-2" snowpack, see <br />2/10/2009 Yes 4.5 6.68 9.2 7.27 923 90 attached tables <br />4/20/2009 Yes 4.5 8.24 12.3 8.45 898 195 Sunny, Dry, see attached tables <br />8/11/2009 No 4.7 8.48 13.9 8.25 889 133 Sunny, Hot, Dry <br />12/1/2009 No 1.5 9.15 8.6 11.54 881 116 Flow restricted by vegetation <br />6/2/2010 Yes 2.3 8.52 13.2 2.27 880 172 Flow restricted by vegetation <br />7/28/2010 No 5.2 8.44 13.4 8.04 880 99 Sunny, Dry, Vegetation removed <br />11/4/2010 No 5.1 8.47 10.1 8.51 856 157 Sunny, Dry <br /> * Make-up for missed 1Q11 monitoring, <br />4/18/2011 No 4.3 8.46 10.0 9.40 822 NM Sunny, warm, clear skies <br />x - URP Probe broke during 4/16/11 Monitoring Lvent. <br />Note: PR Spring not accessible in February or March, 2010 due to deep snow