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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr+6, AND TOTAL LEAD <br /> .............................................................................................................................................................................................................................................. <br /> .............................................................................................................................................................................................................................................. <br /> Ma� ifrin� <br /> &. <br /> .. <br /> ::: :. �� . ..> a <br /> ..well ;::: veti hro nlf�mll;>::. fir:.. eats... <br /> .............................................:............................................................................................................................................... ................ ........................ <br /> ............................................................................................................................................................................................. .............................................. <br /> ............................................................................................................................................................................................................................................ <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> 1st qtr-1991 0.04 NA <0.0050 <br /> 2nd qtr-1991 0.02 NA <0.0050 <br /> 3rd qtr-1991 0.018 NA <0.0050 <br /> 4th qtr-1991 0.02 NA <0.0050 <br /> 1st qtr-1992 0.022 <0.010 NA <br /> 2nd qtr-1992 0.021 (0.022) 0.018(0.020) NA <br /> 3rd qtr-1992 0.019 0.017 NA <br /> 4th qtr-1992 NS NS NS <br /> MW-11B 1st qtr-1993 NS NS NS <br /> 2nd qtr-1993 NS NS NS <br /> 3rd qtr-1993 NS NS NS <br /> Number of Detects 7 2 0 <br /> Number of Analyses 7 3 4 <br /> Percent Detected 100 67 ND <br /> Minimum Concentration Detected 0.018 0.017 ND <br /> • Maximum Concentration Detected 0.04 0.018 ND <br /> Average Concentration 0.023 0.013 ND <br /> Geometric Mean Concentration` 0.022 0.012 ND <br /> Standard Deviation 0.008 0.007 ND <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> 1st qtr-1991 0.11 NA 0.054 <br /> 2nd qtr-1991 0.011 NA <0.0050 <br /> 3rd qtr-1991 0.012 NA <0.0050 <br /> 4th qtr-1991 0.016 NA <0.0050 <br /> 1st qtr-1992 0.011 <0.010 <0.0050 <br /> 2nd qtr-1992 0.0079 <0.010 <0.0050 <br /> 3rd qtr-1992 0.0058(0.0058) <0.010(<0.010) <0.0050(<0.0050) <br /> 4th qtr-1992 0.014 <0.010 <0.0050 <br /> MW-12A 1st qtr-1993 0.012 <0.010 <0.0050 <br /> 2nd qtr-1993 0.0068 <0.010 <0.0050 <br /> 3rd qtr-1993 0.012 <0.010 <0.0050 <br /> Number of Detects 11 0 1 <br /> Number of Analyses 11 7 11 <br /> Percent Detected 100 ND 9 <br /> Minimum Concentration Detected 0.006 ND 0.0025 <br /> Maximum Concentration Detected 0.110 ND 0.054 <br /> Average Concentration 0.020 ND 0.007 <br /> • Geometric Mean Concentration` 0.013 ND 0.003 <br /> Standard Deviation 0.030 ND 0.016 <br /> /u/csing/(racy/ri/tables/ritbl5-4 5-4-10 <br />