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Discussion of Results: Trend Evaluation of Groundwater Data <br />The analytical results for all groundwater sites were evaluated for trends for all parameters <br />that were analyzed. In groundwater monitoring locations with long histories of data <br />collection (2+ years) the most recent data was appended to the period of record data for <br />each site and trends were evaluated. For 2014, no wells showed significant increasing <br />trends in groundwater concentration. The increasing trends observed in wells EVMW -1 S, <br />EVMW -1 D and EV -MW -004 in 2013 were thoroughly investigated as part of a study of <br />groundwater below the Robinson Lake Seep Pump Station. Based on the results of the <br />investigation, documented in a report submitted to DRMS on November 18th, 2014, the <br />overall water quality has improved and trends have shown a decline in all constituents of <br />concern in these wells. In a letter from DRMS dated November 21 st, 2014, DRMS agreed <br />with the findings of the investigation and approved Climax's request to return to quarterly <br />monitoring at these sites. <br />Discussion of Results: Outlier Identification <br />The 2014 groundwater and surface water data also were analyzed for outliers, of which one <br />data point was found. The third quarter result for total dissolved solids at EI -SW1 was <br />reported as 2,790 mg /L, which is about 10 to 20 times higher than normal. Based on <br />consultation with the lab there was no documentation of a dilution or calculation error, but <br />when compared to the sum of all dissolved constituents (alkalinity, chloride, sulfate, <br />calcium, magnesium, sodium, and potassium summing to 227.7 mg /L) it was clear that the <br />result was an outlier and has been qualified as such and is maintained in the monitoring <br />database in accordance with the WQMP. Results at EI -SW1, both before and after, the <br />third quarter were within the normal range. <br />0) <br />