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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 /> 3rd qtr-1990 NI NI NI <br /> 41h qtr-1990 NI NI NI <br /> 1st qtr-1991 NI NI NI <br /> 2nd qtr-1991 NI NJ NI <br /> 3rd qtr-1991 NI N7 NI <br /> ' 4th qtr-1991 NI NI NI <br /> Ist qtr-1992 NI N1 NI <br /> 2nd qtr-1992 NI NI NI <br /> 3rd qtr-1992 NI Nt 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 N1 NI NI <br /> Oh qtr-1991 NI NI NI <br /> 1 st 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 N13 <br /> Standard Deviation 0.018 ND ND <br /> /ulcsingltracylriltableslritblS-4 _ _ <br /> 5 4 17 <br />