ARCHIVED REPORTS BIOTREATMENT BEDS POST REMEDIATION INVESTIGATION REPORT

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TABLE 5-3 (continued) SUMMARY GROUND WATER SAMPLE ANALYTICAL RESULTS . AROMATIC VOLATILE ORGANICS k�1#lAttC. 01a#�Ir g �mirae�f: Momtos 531 oxn okal Arm bEle 1'4c�i �YenK 33eu�cem Toluene �t3t�ldeu�cae ... �Cyls ..: t�tgfl� 3rd qtr-1990 NI NI NI NI 4th qtr-1990 NI NI NI NI 1st qtr-1991 NI NI NI NI 2nd qtr-1991 NI NI NI NI 3rd qtr-1991 NI NI NI NI 4th qtr-1991 NI NI NI NI 1st qtr-1992 NI NI NI NI 2nd qtr-1992 NI NI NI NI 3rd qtr-1992 NI NI NI NJ 4th qtr-1992 <0.50 <0.50 <0.50 <1.0 MW-16B 1st993 tr-1 q <0.50 <0.50 <0.50 <1.0 2nd qtr-1993 <0.50 <0.50 <0.50 <1.0 3rdtr-1993 4 <0.50 <0.50 <0.50 <1.0 Number of Detects 0 0 0 0 Number of Analyses 4 4 4 4 Percent Detected ND ND ND ND ...::::::; Minimum Concentration Detected ND ND ND ND Maximum Concentration Detected ND ND ND ND Average Concentration ND ND ND ND Geometric Mean Concentration ND ND ND ND <0.50 Standard Deviation ND ND ND ND 3rd qtr-1990 NI NI NI NI 4th qtr-1990 NI NI NI NI 1st qtr-1991 NI NI NI NI 2nd qtr-1991 NI NI NI NI 3rdtr-1991 q NI NI NI NI 4th qtr-1991 0.9 <0.50 <0.50 <0.10 _,,,....., Ist qtr-1992 <0.50 <0.50 <0.50 <1.0 2nd qtr-1992 <0.50 <0.50 <0.50 <1.0 3rd qtr-1992 <0.50 <0.50 <0.50 <1.0 4th qtr-1992 <0.50 <0.50 <0.50 <1.0 MW-17A 1st qtr-1993 <0.50 <0.50 <0.50 <1.0 2nd qtr-1993 <0.50 <0.50 <0.50 <1.0 3rd qtr-1993 <0.50 <0.50 <0.50 <1.0 a'. Number of Detects 1 0 0 0 Number of Analyses 8 8 8 8 Percent Detected 13 ND ND ND Minimum Concentration Detected 0.25 ND ND ND Maximum Concentration Detected 0.9 ND ND ND Average Concentration 0.33 ND ND ND • Geometric Mean Concentration 0.29 ND ND ND 1.04 Standard Deviation 0.23 ND ND ND /u/csing/tracy/ri/tables/tbl5-3 5-3-15