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<br />WHIRLWIND MINE, PERMIT NO. M-2007-044 <br />SECOND QUARTER 2010 HYDROLOGICAL REPORT <br />2. Whirlwind Decline <br /> <br /> <br />Sample Date <br />Sample <br />Location <br />Inflow Rate <br />(gpm) (1)(2) <br />Field pH <br />s.u. <br />Temperature <br />(deg. C Dissolved <br />Oxygen <br />m /L Specific <br />Conductance <br />uS/cm Oxygen- <br />Reduction <br />Potential mV <br /> <br />Comments <br />3/10/2008 WW Sump 2.4 8.30 11.0 NM NM NM See attached tables <br />6/19/2008 WW Sump 2.8 10.26 11.5 0.78 592 114 See attached tables <br />9/8/2008 WW Sum 2.2 9.11 11.0 8.48 649 62 See attached tables <br />12/16/2008 WW Sump 1.7 8.75 10.7 5.22 609 149 See attached tables <br />3/5/2009 WW Sump 2.1 8.52 11.1 8.24 618 151 No analytical samples collected <br />4/20/2009 WW Sum 2.2 8.41 11.2 6.68 626 177 No analytical samples collected <br />8/11/2009 WW Sum 1.6 8.76 11.9 6.44 599 152 No analytical samples collected <br />12/1/2009 WW Sum 1.4 8.61 11.5 6.54 624 160 No analytical samples collected <br />2/2/2010 WW Decline .0 7.06 11.3 7.02 597 170 No analytical samples collected <br />4/21/2010 <br />(1) From Firs WW Decline <br />t Quarter 2008 8.07 12.3 6.76 <br />H1.9 <br />to Fourth Quarter 2009, the inflow rate was estimated over the q 576 201 See attached lab sheets and tables <br />uarter by calculating the volume of water pumped out of the mine and <br />treated and estimations of the volume of water evaporated off the untreated water tank and brought out of the mine as moisture in waste rock, ore, and ventilated air. <br />(2) As of the First Quarter 2010, water inflow is calculated based on the approximate water elevation and the void volume of the mine workings. <br />3. Packrat Mine <br />Not Accessible <br />4. DP Spring <br /> <br /> <br />Sample Date <br />Sampled <br />(YIN) <br />Inflow Rate <br />m <br />Field pH <br />s.u. <br />Temperature <br />(deg. C Dissolved <br />Oxygen <br />m /L Specific <br />Conductance <br />uS/cm Oxygen- <br />Reduction <br />Potential mV <br /> <br />Comments <br />3/10/2008 No 6 to 7 NM NM NM NM NM Sunny, Ave. of 2 feet snowpack <br />6/19/2008 No 7.2 7.42 11.0 7.22 524 126 Sunny, Dry <br />9/8/2008 No 5.2 8.00 11.9 9.49 544 166 Sunny, Dry <br />12/15/2008 No 8.2 7.96 4.8 9.42 532 97 Snowing, 4" snowpack <br />2/10/2009 No 8.5 5.22 4.7 9.30 562 126 Sunny, Cold, 3-4" snowpack <br />4/20/2009 No 8.3 7.64 6.6 9.16 546 190 Sunny, Dry <br />8/11/2009 No 5.9 7.68 12.0 8.25 532 190 Sunny, Hot, Dry <br />12/1/2009 No 7.9 8.11 4.8 10.54 548 115 Cold, clear skies <br />2/2/2010 No 7.9 6.73 4.7 10.71 526 177 11 Cold, clear skies, 3 ft of snow <br />6/2/2010 No 8.3 7.53 8.8 11.62 554 200 unny, Dry