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TABLE 5-4 (continued) <br /> SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> • TOTAL CHROMIUM, Cr", AND TOTAL LEAD <br /> lonttan M <br /> (xxig113 <br /> elite:; wentroltiiire .:. <br /> _...... <br /> a <br /> 3rd qtr-1990 130 NA <0.0050 <br /> 4th qtr-1990 0.016 NA <0.0050 <br /> 1st qtr-1991 0.016 NA <0.0050 <br /> 2nd qtr-1991 0.011 NA <0.0050 <br /> 3rd qtr-1991 0.012 NA <0.0050 <br /> 4th qtr-1991 0.01 NA <0.0050 <br /> 1st qtr-1992 0.068 0.061 NA <br /> 2nd qtr-1992 0.011 <0.010 NA <br /> 3rd qtr-1992 0.0097(0.0096) 0.012(<0.010) NA <br /> 4th qtr-1992 0.01 <0.010 NA <br /> MWAC 1st qtr-1993 0.021 <0.010 NA <br /> 2nd qtr-1993 0.0038 <0.010 NA <br /> 3rd qtr-1993 0.066 <0.010 NA <br /> Number of Detects 13 2 0 <br /> Number of Analyses 13 7 6 <br /> Percent Detected 100 29 ND <br /> Minimum Concentration Detected 0.0038 0.005 ND <br /> • Maximum Concentration Detected 130 0.061 ND <br /> Average Concentration 10.020 0.014 ND <br /> Geometric Mean Concentration` 0.030 0.008 ND <br /> Standard Deviation 36.050 0.021 ND <br /> 3rd qtr-1990 <0.01 NA <0.0050 <br /> 4th qtr-1990 0.0038 NA <0.0050 <br /> 1st qtr-1991 0.008 NA <0.0050 <br /> 2nd qtr-1991 0.0018 NA <0.0050 <br /> 3rd qtr-1991 0.0011 NA <0.0050 <br /> 4th qtr-1991 0.0033 NA <0.0050 <br /> 1st qtr-1992 <0.0010 <0.010 NA <br /> 2nd qtr-1992 0.0013 <0.010 NA <br /> 3rd qtr-1992 <0.0010 <0.010 NA <br /> 4th qtr-1992 0.0011 <0.010 <0.0050 <br /> MW-2A 1st qtr-1993 0.0011 <0.010 NA <br /> 2nd qtr-1993 <0.0010 <0.010 NA <br /> 3rd qtr-1993 0.0012 <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 0.008 ND ND <br /> Average Concentration 0.002 ND ND <br /> • Geometric Mean Concentration` 0.001 ND ND <br /> Standard Deviation 0.002 ND ND <br /> /u/cs ing/tracv/ri/tables/ritbl5-4 5-4-2 <br />