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In addition, a Stiff Diagram of the groundwater cation/anion data from CEM-004 compared to the <br /> average and got" percentile of the cation/anion concentrations from the last four quarterly samples of <br /> C-Pit data is provided in Figure i for reference. As shown in Figure i and consistent with past reports, <br /> the signature for CEM-004 continues to be significantly different from that of C-Pit. <br /> LEGEND <br /> = C-Pit 90th Percentile <br /> Q C-Pit Average <br /> CEM-004 from 05/01/2019 <br /> Calcium Bicarbonate <br /> (as CaCO3) <br /> Magnesium Carbonate <br /> Potassiu Chloride <br /> Sodium Sulfate <br /> 80 60 40 20 20 40 60 80(meq/L) <br /> Figure is Second quarter 203.9 cation/anion data for CEM-004 compared to C-Pit <br /> Please contact me at 303-823-2124 or by email at scotta.harcus(abcemex.com for any questions or concerns <br /> regarding this submittal. <br /> Sincerely, <br /> Scott A. Harcus <br /> Environmental Manager <br /> Encs.Y19Q2 C-Pit Monitoring Report and associated Stiff Plot(Fig.1),and Summary of Analytical Results(Table 1) <br />