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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr", AND TOTAL LEAD <br /> �:.;< <br /> Chi orra�tt I:.>ead <br /> .... <br /> 3rd qtr-1990 NI NI NI <br /> 4th qtr-1990 NI NI NI <br /> Ist 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 /> Ist 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-3C 1st qtr-1993 0.011 <0.010 <0.0050 <br /> 2nd qtr-1993 0.011 0.015 <0.0050 <br /> 3rd qtr-1993 0.01 <0.010 <0.0050 <br /> Number of Detects 3 1 0 <br /> Number of Analyses 3 3 3 <br /> Percent Detected 100 33 ND <br /> Minimum Concentration Detected 0.01 0.005 ND <br /> • Maximum Concentration Detected 0.011 0.015 ND <br /> Average Concentration 0.011 0.008 ND <br /> Geometric Mean Concentration` 0.011 0.007 ND <br /> Standard Deviation 0.001 0.006 ND <br /> 3rd qtr-1990 0.17 NA <0.0050 <br /> 4th qtr-1990 0.18 NA <0.0050 <br /> Ist qtr-1991 0.21 NA <0.0050 <br /> 2nd qtr-1991 0.21 NA <0.0050 <br /> 3rd qtr-1991 0.21 NA <0.0050 <br /> 4th qtr-1991 0.15 NA <0.0050 <br /> Ist qtr-1992 0.16 0.14 NA <br /> 2nd qtr-1992 0.15 0.14 NA <br /> 3rd qtr-1992 0.15 0.14 NA <br /> 4th qtr-1992 0.16(0.14) 0.029(0.11) NA <br /> MW4A Ist qtr-1993 0.14 0.12 NA <br /> 2nd qtr-1993 0.13 0.11 NA <br /> 3rd qtr-1993 0.12 0.12 NA <br /> Number of Detects 13 7 0 <br /> Number of Analyses 13 7 6 <br /> Percent Detected 100 100 ND <br /> Minimum Concentration Detected 0.120 0.029 ND <br /> Maximum Concentration Detected 0.210 0.140 ND <br /> Average Concentration 0.165 0.114 ND <br /> Geometric Mean Concentration` 0.162 0.103 ND <br /> Standard Deviation 0.030 0.039 ND <br /> /u/csing/tracy/ri/tables/ritbl5-4 5-4-5 <br />