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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr", AND TOTAL LEAD <br /> 1VIo Et�r gll; <br /> @�1< <: ElllYOlititYEli' ............ <br /> Y'+ii c. ,La <br /> ................ <br /> . . ::. <br /> 3rd qtr-1990 0.18 NA <0.005 <br /> 4th qtr-1990 0.14 NA 0.012 <br /> 1st qtr-1991 0.09 NA <0.0050 <br /> 2nd qtr-1991 0.098 NA <0.0050 <br /> 3rd qtr-1991 0.012 NA <0.0050 <br /> 4th qtr-1991 0.09 NA 0.019 <br /> 1st qtr-1992 0.053 <0.010 NA <br /> 2nd qtr-1992 0.088(0.095) 0.083 (0.084) NA <br /> 3rd qtr-1992 0.095 0.095 NA <br /> 4th qtr-1992 0.062 <0.010 <0.0050 <br /> MW-5A 1st qtr-1993 0.062 0.061 NA <br /> 2nd qtr-1993 0.035 0.072 NA <br /> 3rd qtr-1993 0.0667 0.074 NA <br /> Number of Detects 13 5 2 <br /> Number of Analyses 13 71 7 <br /> Percent Detected 100 0.71 29 <br /> Minimum Concentration Detected 0.012 0.005 0.0025 <br /> . Maximum Concentration Detected 0.180 0.095 0.109 <br /> Average Concentration 0.082 0.056 0.006 <br /> Geometric Mean Concentration` 0.070 0.035 0.004 <br /> Standard Deviation 0.043 0.037 0.007 <br /> 3rd qtr-1990 <0.01 NA <0.0050 <br /> 4th qtr-1990 0.015 NA <0.0050 <br /> 1st qtr-1991 0.0058 NA <0.0050 <br /> 2nd qtr-1991 0.001 NA <0.0050 <br /> 3rd qtr-1991 <0.0020 NA <0.0050 <br /> 4th qtr-1991 <0.0020 NA <0.0050 <br /> 1st qtr-1992 0.001 <0.010 NA <br /> 2nd qtr-1992 <0.0010 <0.010 NA <br /> 3rd qtr-1992 0.0011 <0.010 NA <br /> 4th qtr-1992 0.0036 <0.010 <0.0050 <br /> MW-6A 1st qtr-1993 0.016 <0.010 NA <br /> 2nd qtr-1993 0.0014 <0.010 NA <br /> 3rd qtr-1993 0.0013 <0.010 NA <br /> Number of Detects 9 0 0 <br /> Number of Analyses 13 7 7 <br /> Percent Detected 69 ND ND <br /> Minimum Concentration Detected 0.0005 ND ND <br /> Maximum Concentration Detected 0.016 ND ND <br /> Average Concentration 0.004 ND ND <br /> • Geometric Mean Concentration` 0.002 ND ND <br /> Standard Deviation 0.005 ND ND <br /> /u/cling/tracy/ri/tables/ritbl5-4 5.4-6 <br />