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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> TOTAL CHROMIUM, Cr+6, AND TOTAL LEAD <br /> loniftE�i <br /> .'.; <br /> eltalsig�; <br /> la.;: 'Eli ' FOlYlitlElii fit[c d <br /> E <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> 1st qtr-1991 NI NI NI <br /> 2nd qtr-1991 NI NI NI <br /> 3rd qtr-1991 NI NI NI <br /> 4th qtr-1991 NI NI NI <br /> 1st qtr-1992 0.026 0.023 <0.0050 <br /> 2nd qtr-1992 0.024 0.022 <0.0050 <br /> 3rd qtr-1992 0.02 0.02 <0.0050 <br /> 4th qtr-1992 0.022 <0.010 <0.0050 <br /> MW-14B 1st qtr-1993 0.027 0.019 <0.0050 <br /> 2nd qtr-1993 0.011 0.024 <0.0050 <br /> 3rd qtr-1993 0.027 0.02 <0.0050 <br /> Number of Detects 7 6 0 <br /> Number of Analyses 7 7 7 <br /> Percent Detected 100 86 ND <br /> Minimum Concentration Detected 0.011 0.005 ND <br /> Maximum Concentration Detected 0.027 0.024 ND <br /> Average Concentration 0.022 0.019 ND <br /> Geometric Mean Concentration` 0.022 0.017 ND <br /> Standard Deviation 0.006 0.006 ND <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> 1st qtr-1991 NI NI NI <br /> 2nd qtr-1991 NI NI NI <br /> 3rd qtr-1991 NI NI NI <br /> 4th qtr-1991 0.064 NA 0.014 <br /> 1st qtr-1992 0.68 0.012 0.013 <br /> 2nd qtr-1992 0.017 <0.010 <0.0050 <br /> 3rd qtr-1992 0.025 0.01 <0.0050 <br /> 4th qtr-1992 0.021 0.015 <0.0050 <br /> MW-15A 1st qtr-1993 0.026 0.016 0.006 <br /> 2nd qtr-1993 0.018 0.017 <0.0050 <br /> 3rd qtr-1993 0.021 <0.010 <0.0050 <br /> Number of Detects 8 5 3 <br /> Number of Analyses 8 7 8 <br /> Percent Detected 100 71 38 <br /> Minimum Concentration Detected 0.017 0.005 0.0025 <br /> Maximum Concentration Detected 0.680 0.017 0.014 <br /> Average Concentration 0.109 0.011 0.006 <br /> • Geometric Mean Concentration` 0.037 0.005 0.004 <br /> Standard Deviation 0.231 0.004 0.005 <br /> /u/csing/tracy/ri/tables/ritbl5-4 5-4-13 iff <br />