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111111111110? r M M 1 M IM M M=1 ? ? i , <br />WHIRLWIND MINE, PERMIT NO. M-2007-044 <br />FOURTH QUARTER 2010 HYDROLOGICAL REPORT <br />2. Whirlwind Decline <br />(1) From First Quarter 2008 to Fourth Quarter 2009, the inflow rate was estimated over the quarter by calculating the volume of water pumped out of the mine a <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 /> <br /> <br />Sample Date <br />3/10/2008 <br />6/19/2008 <br />Sample <br />Location <br />WW Sum <br />WW Sum <br />Inflow Rate <br />(gpm) 11112 <br />2.4 <br />2.8 <br />Field pH <br />(s.u.) <br />8.30 <br />10.26 <br />Temperature <br />(deg. C) <br />11.0 <br />11.5 Dissolved <br />Oxygen <br />(mg/L) <br />NM <br />0.78 -Specific <br />Conductance <br />(US/cm) <br />NM <br />592 Oxygen- <br />Reduction <br />Potential (mV) <br />NM <br />114 <br />62 <br /> <br />Comments <br />See attached tables <br />See attached tables <br />attached tables <br />S <br />9/8/2008 <br />12/16/2008 WW Sum <br />WW Sum 2.2 <br />1.7 9.11 <br />8.75 11.0 <br />10.7 8.48 <br />5.22 649 <br />609 149 <br />151 ee <br />See attached tables <br />les collected <br />nal tical sam <br />N <br />3/5/2009 WW Sum 2.1 8.52 11.1 8.24 618 177 p <br />o a <br />les collected <br />tical sam <br />N <br />anal <br />4/20/2009 WW Sum 2.2 8.41 11.2 6.68 626 2 p <br />o <br />y <br />les collected <br />tical sam <br />l <br />N <br />8/11/2009 WW Sum 1.6 8.76 11.9 6.44 599 15 <br />160 p <br />o ana <br />y <br />les collected <br />tical sam <br />N <br />nal <br />12/1/2009 WWSum 1.4 8.61 11.5 6.54 624 170 p <br />o a <br />y <br />les collected <br />tical sam <br />nal <br />N <br />2/2/2010 WW Decline 2.0 7.06 11.3 7.02 597 201 p <br />o a <br />y <br />e attached tables <br />S <br />4/21/2010 WW Decline 1.9 8.07 12.3 6.76 576 133 e <br />les collected <br />tical sam <br />nal <br />N <br />9/8/2010 WW Decline 1.7 8.65 11.9 4.53 592 207 p <br />o a <br />y <br />les collected <br />tical sam <br />nal <br />N <br />11/4/2010 WW Decline 3.4 8.49 11.6 2.22 578 p <br />o a <br />y <br />d tables <br />h <br />tt <br />S <br />2/7/2011 WW Decline 1.7 849 11 .3 2.26 590 151 ac <br />e <br />ee a <br />nd