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t <br /> TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> TOTAL CHROMIUM, Cr+6, AND TOTAL, LEAD <br /> 1�ii>t»itorin� �(�) <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> ' 1st qtr-1991 0.11 NA <0.0050 <br /> 2nd qtr-1991 0.058 NA <0.0050 <br /> 3rd qtr-1991 0.057 NA <0.0050 <br /> 4th qtr-1991 0.048 NA <0.0050 <br /> 1st qtr-1992 0.063 <0.010 NA <br /> 2nd qtr-1992 0.048 0.045 NA <br /> 3rd qtr-1992 0.028 0.028 NA <br /> 41h qtr-1992 0.034 0.033 <0.0050 <br /> MW-106 1st qtr-1993 0.042 0.037 NA <br /> 2nd qtr-1993 0.055 0.037 NA <br /> 3rd qtr-1993 0.053 0.053 NA <br /> Number of Detects 11 6 0 <br /> Number of Analyses 11 9 7 <br /> Percent Detected 100 67 ND <br /> Minimum Concentration Detected 0.028 0.005 ND <br /> Maximum Concentration Detected 0.110 0.05 NO <br /> Average Concentration 0.054 0.03 ND <br /> Geometric Mean Concentration` 0:051 0.03 ND <br /> ' Standard Deviation 0.021 0,02 ND <br /> 3rd qtr-1990 NI NJ NI <br /> 4th qtr-1990 NI NJ N1 <br /> 1st qtr-1991 0.016 NA <0.0050 <br /> 2nd qtr-1991 0.0011 NA <0.0050 <br /> 3rd qtr-1991 0.046 NA <0.0050 <br /> 4th qtr-1991 <0.0020 NA <0.0050 <br /> 1st qtr-1992 <0,0010 <0.010 NA <br /> 2nd qtr-1992 <0.0010 <0.010 NA <br /> 3rd qtr-1992 0.002 <0.010 NA <br /> ' 4th qtr-1992 <0.0010 <0.010 <0.0050 <br /> MW-11A 1st qtr-1993 0.015 <0.010 NA <br /> 2nd qtr-1993 <0.0010 <0.010 NA <br /> ' 3rd qtr-1993 <0.0010 0.011 NA <br /> Number of Detects 5 1 0 <br /> Number of Analyses 11 7 5 <br /> Percent Detected 45 14 ND <br /> Minimum Concentration Detected 0.0(105 0.005 ND <br /> Maximum Concentration Detected 0.046 0.011 ND <br /> ' Average Concentration 0.008 0.006 ND <br /> Geometric Mean Concentration` 0.002 0.006 ND <br /> Standard Deviation 0.014 0.002 ND <br /> ' lufcsing1tracyfri1tablcs/ritb154 - <br /> 5-4-9 <br />