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Attachment 6 <br />Southfield Mines Well 23 Concerns <br />CDPH &E <br />DWS MCL* <br />Jun -04 <br />Dec -05 <br />Jun -05 <br />Dec -05 <br />Jun -06 <br />Nov -06 <br />Jun -07 <br />Nov -07 <br />May -08 <br />Dec -08 <br />Jun -09 <br />Dec -09 <br />Jun -10 <br />Dec -10 <br />Jun -11 <br />Dec -11 <br />8.5 <br />pH <br />8.6 <br />8.4 <br />8.7 <br />8.7 <br />8.7 <br />8.6 <br />8.7 <br />8.6 <br />8.6 <br />8.6 <br />8.9 <br />8.4 <br />8.5 <br />8.5 <br />8.5 <br />8.5 <br />500 mg /I <br />Solids <br />750 <br />740 <br />770 <br />820 <br />810 <br />990 <br />850 <br />830 <br />1060 <br />860 <br />830 <br />710 <br />720 <br />710 <br />820 <br />640 <br />.05 mg /I <br />Manganese <br />0.009 <br />0 <br />0 <br />0 <br />0 <br />0.048 <br />0.03 <br />0.03 <br />0.108 <br />0 <br />0.008 <br />0 <br />0.015 <br />0.108 <br />0.082 <br />0.047 <br />20. mg /I <br />Sodium <br />0 <br />291 <br />281 <br />297 <br />290 <br />285 <br />291 <br />324 <br />356 <br />299 <br />326 <br />180 <br />205 <br />231 <br />269 <br />142 <br />.3 mg /I <br />Iron <br />0.02 <br />0 <br />0.07 <br />0 <br />0.05 <br />1.83 <br />0.08 <br />0 <br />7.54 <br />0 <br />0 <br />0 <br />0.03 <br />0 <br />0.05 <br />0.13 <br />?? <br />Calcium <br />2.8 <br />3.8 <br />3.3 <br />3.5 <br />3.2 <br />7.3 <br />4.1 <br />3.7 <br />12 <br />4.1 <br />14.6 <br />56.8 <br />36.9 <br />41.4 <br />19.2 <br />58.5 <br />?? <br />Magnesium <br />0.4 <br />0.5 <br />0.5 <br />0.5 <br />0.4 <br />1 <br />0.5 <br />0.5 <br />2.4 <br />0.5 <br />3.3 <br />13.2 <br />8.4 <br />8.9 <br />3.7 <br />13.2 <br />* Colorado Department of Public ealth and Environment- Drinking Water Section Chemicla nad Radiological Maximum Contaaminant Levels <br />Figures taken from Hydrology Reports submitted to Division. <br />Compiled by Tena Gallagher 7/20/2012 <br />