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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr+6, AND TOTAL LEAD <br /> malt It€�I �1�fm <br /> g11 <br /> lluet�i; Chralrtm� : C .+a .ea��a <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-17B 1st qtr-1993 0.01 <0.010 <0.0050 <br /> 2nd qtr-1993 0.01 <0.010 <0.010 <br /> 3rd qtr-1993 0.01 <0.010 <0.0050 <br /> Number of Detects 3 0 0 <br /> Number of Analyses 3 3 3 <br /> Percent Detected 100 ND ND <br /> Minimum Concentration Detected 0.010 ND ND <br /> Maximum Concentration Detected 0.010 ND ND <br /> Average Concentration 0.010 ND ND <br /> Geometric Mean Concentration, 0.010 ND ND <br /> Standard Deviation 0.00 ND 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 0.026 NA <0.0050 <br /> Ist qtr-1992 0.031 <0.010 <0.0050 <br /> 2nd qtr-1992 0.034 0.026 <0.0050 <br /> 3rd qtr-1992 0.03 0.028 <0.0050 <br /> 4th qtr-1992 0.0052 <0.010 <0,0050 <br /> MW-18A 1st qtr-1993 0.041 0.035 <0.0050 <br /> 2nd qtr-1993 0.051 0.043 <0.0050 <br /> 3rd qtr-1993 0.046 0.038 <0.0050 <br /> Number of Detects 8 5 0 <br /> Number of Analyses 8 7 8 <br /> Percent Detected 100 71 ND <br /> Minimum Concentration Detected 0.005 0.005 ND <br /> Maximum Concentration Detected 0.051 0.043 ND <br /> Average Concentration 0.033 0.026 ND <br /> • Geometric Mean Concentration, 0.028 0.019 ND <br /> Standard Deviation 0.014 0.015 ND <br /> /u/csing/tracy/ri/tables/ritbl5-4 5-4-16 <br />