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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr", AND TOTAL LEAD <br /> e <br /> loiif>pg.... <br /> �1 M <br /> :::::::::::::::::::::.::.:.. <br /> Iltre�tErrcxrt�I ;; rear1 <br /> ...... . ..... ... .... <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 NI NI NI <br /> 2nd qtr-1992 NI NI NI <br /> 3rd qtr-1992 NI Ni NI <br /> 4th qtr-1992 NI NI NI <br /> MW-18B Ist qtr-1993 0.02 0.021 <0.0050 <br /> 2nd qtr-1993 0.018 0.011 <0.010 <br /> 3rd qtr-1993 0.016 <0.010 <0.0050 <br /> Number of Detects 3 2 0 <br /> Number of Analyses 3 3 3 <br /> Percent Detected 100 67 ND <br /> Minimum Concentration Detected 0.02 0.005 ND <br /> • Maximum Concentration Detected 0.02 0.021 ND <br /> Average Concentration 0.018 0.012 ND <br /> Geometric Mean Concentration` 0.018 0.010 ND <br /> Standard Deviation 0.002 0.008 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 NI NI NI <br /> 1st qtr-1992 0.0044 <0.010 <0.0050 <br /> 2nd qtr-1992 0.05 <0.010 <0.0050 <br /> 3rd qtr-1992 0.0027 <0.010 <0.0050 <br /> 4th qtr-1992 0.03 <0.010 <0.0050 <br /> MW-19A 1st qtr-1993 0.007 <0.010 <0.0050 <br /> 2nd qtr-1993 0.0097 <0.010 <0.010 <br /> 3rd qtr-1993 0.0053 <0.010 <0.0050 <br /> Number of Detects 7 0 0 <br /> Number of Analyses 7 7 7 <br /> Percent Detected 100 ND ND <br /> Minimum Concentration Detected 0.0027 ND ND <br /> Maximum Concentration Detected 0.050 ND ND <br /> Average Concentration 0.016 ND ND <br /> • Geometric Mean Concentration` 0.009 ND ND <br /> Standard Deviation 0.018 ND ND <br /> /u/es ing/tracy/ri/tables/ritbl5-4 5-4-17 <br />