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, <br />GROUND WATER LOCATION: BC -1 <br />MONITORING CHART FOR 2011 AHR <br />mg/L <br />350 <br />300 <br />250 <br />200 <br />150 <br />100 <br />50 <br />0 <br />—4— Sulfate -- Calcium --.t— IronTR <br />Jun '99 Jun '00 Dec '00 Jun '01 Dec'01 Jun '03 Aug '03 Jun '04 Aug '06 Aug '08 Jun '09 Aug '09 Jun '10 Aug '10 Jul '11 <br />Date <br />Oxbow Mining, LLC., Elk Creek Mine <br />Date : 21- Feb-12 <br />