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SURFACE WATER LOCATION: B -1 <br />MONITORING CHART FOR 2011 AHR <br />mg/L <br />90 <br />80 <br />70 <br />60 <br />50 <br />40 <br />30 <br />20 <br />10 <br />0 <br />�- Calcium - -11r - Magnesium —A— Sodium <br />Mar '99 Jun '99 Mar '00 Jun '00 Mar '01 Jun '01 Jun '03 Jun '04 Jun'05 Jun '06 Jun'07 Jun '08 Aug '08 May'09 May'10 Apr '11 <br />Date <br />Oxbow Mining, LLC., Elk Creek Mine <br />Date :21-Feb-12 <br />. <br />�' <br />v <br />S <br />.'K <br />' °• <br />•ai ` <br />: 7 <br />,.;ibi <br />• <br />yip,- .— �•.a <br />* <br />p <br />i- <br />SURFACE WATER LOCATION: B -1 <br />MONITORING CHART FOR 2011 AHR <br />mg/L <br />90 <br />80 <br />70 <br />60 <br />50 <br />40 <br />30 <br />20 <br />10 <br />0 <br />�- Calcium - -11r - Magnesium —A— Sodium <br />Mar '99 Jun '99 Mar '00 Jun '00 Mar '01 Jun '01 Jun '03 Jun '04 Jun'05 Jun '06 Jun'07 Jun '08 Aug '08 May'09 May'10 Apr '11 <br />Date <br />Oxbow Mining, LLC., Elk Creek Mine <br />Date :21-Feb-12 <br />