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SUNDAY MINE COMPLEX-HYDROGEOLOGIC REPORT <br /> SMW11,was also collected. Sample SMW1 Final involved sampling of water within the well screen, <br /> but again, no well purging was conducted. Samples SMW1 Pre2, SMW1 Final 2, and SMW11(2) <br /> (Dup) represents re-analysis by the analytical laboratory(GEL Laboratories LLC)to correct for the <br /> dilution factor for anion analyses. <br /> 10.4 Laboratory Analysis <br /> The analytic schedule for groundwater water quality monitoring is shown in Table 10-2. The <br /> schedule contains a comprehensive list of inorganic elements including common anions and <br /> cations, minor and trace metals, wet chemistry parameters, and radiological parameters. <br /> Laboratory analysis was conducted by GEL Laboratories for the first four consecutive quarters <br /> from the third quarter of 2013 through the second quarter of 2014. GEL Laboratories was <br /> contracted under EFR. ACZ Laboratories was used for the third quarter in 2014 the fourth <br /> quarter of 2019, and the first quarter of 2020. <br /> 10.5 Water Quality Results <br /> Analytical data results for monitoring wells MW-SUN1, MW-SUN2, and MW-SUN3 were <br /> reviewed to identify trends, groundwater standard exceedances, and general water quality <br /> characteristics. Data were also reviewed for accuracy and precision, but data verification and <br /> validation was limited. <br /> For summary statistics, averages were calculated using one-half of the method detection limit <br /> (MDL)for non-detect results and one-half the practical quantitation limit (PQL) if no value was <br /> reported for the MDL. Averages were also calculated after removing chloride, sulfate, and <br /> nitrate/nitrate results when the client requested a high PQL based on the related groundwater <br /> standard (250, 250, and 10 mg/L, respectively), and the resulting values were non-detect. <br /> These types of analyses (chloride, sulfate, and nitrate) occurred through May 2014 before the <br /> PQLs were lowered to provide more complete water chemistry data and allow for conducting <br /> cation-anion balances for the quality control purposes. <br /> Outliers were identified by finding results that were greater than the average plus two standard <br /> deviations or less than the average minus two standard deviations. Suspected outliers were <br /> also flagged if data appeared suspect. <br /> Additional sites were sampled for water quality, and results are reported on the summary table; <br /> however, the data were not qualified or evaluated for trends due to limited number of samples. <br /> Western Water& Land, Inc. 34 <br />