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VOC ANALYTICAL, GLENDALE PAGE 1 QC REPORT FOR 9802259 DATE PRINTED 23 FEB 1998 AQUEOUS SAMPLES ------ METHOD BLANK ------ ----li---------- LAB CONTROL -------------- ---------------- MATRIX QC ---------------- LCS LCSD RPD RPD MS MSD RPD RPD UNITS RESULT PQL FLG %REC FLG %REC FLG LCL UCL RPO UCL FLG %REC FLG %REC FLG LCL UCL RPD UCL FLG Batch GAS*984027 Method 80I5M - Modified 8015 TPH (Gasoline Range) ug/L 0 300 - 1031 - - - 80 124 - - - 103 - 106 - 71 130 3 25 - [a,a,a-Trifluorotoluene] Percent 119 - - 115 - - - 76 126 - - - 105 - 117 - 76 126 - - - i Batch GAS*984027 Method 8020A - Aromatic Volatile Organics Benzene ug/L 0 5 - 1001 - - - 76 155 - - - 95 - 97 - 70 153 1 25 - Toluene ug/L 0 17 5 - 991 - - - 76 122 - - - 83 - 84 - 70 124 1 25 - Ethylbenzene ug/L 0 5 - 98 - - - 76 119 - - - 95 - 95 - 71 119 0 25 - Methyl-tert-butylether ug/L 0 98 30 - 81� - - - 58 147 - - - 107 - 106 - 53 177 1 30 - Total Xylene Isomers ug/L 0 20 - IOd - - - 74 118 - - - 81 - 81 - 72 117 1 25 - m- and p-Xylene Isomers ug/L 0 10 - 102 - - - 74 118 - - - - - - - - - - - - o-Xylene ug/L 0 5 - 96 - - - 74 118 - - - - - - - - - - - - [a,a,a-Trifluorotoluene] Percent 119 - - 115 - - - 76 126 - - - 105 - 117 - 76 126 - - I Batch GAS*984028 Method 8015M - Modified 8015 TPH (Gasoline Range) ug/L 0 300 - g9i - - - 80 124 - - - 102 - 105 - �71 130 4 25 - [a,a,a-Trifluorotoluene] Percent 119 - - 105 - - - 76 126 - - - 98 - 98 - 76 126 - - - Batch GAS*984028 Method 8020A - Aromatic Volatile Organics Benzene ug/L 0 5 - 98 - - - 76 155 - - - 93 - 91 - 70 153 3 25 - Toluene ug/L 0 5 - 98 - - - 76 122 - - - 81 - 79 - 70 124 2 25 - Ethylbenzene ug/L 0 5 - 97, - - - 76 119 - - - 93 - 90 - 71 119 4 25 - Methyl-Cert-butylether ug/L 0 30 - 96 - - - 58 147 - - - 115 - Ill - 53 177 4 30 - Total Xylene Isomers ug/L 0 20 - 99 - - - 74 118 - - - 79 - 77 - 72 117 3 25 - m- and p-Xylene Isomers ug/L 0 10 - 106 - - - 74 118 - - - - - - - - - - - - o-Xylene ug/L 0 5 - 97, - - - 74 118 - - - - - - - - - - - - [a,a,a-Trifluorotoluene] Percent 119 - - 105 - - - 76 126 - - - 98 - 98 - 76 126 - - - Batch GAS*989019 Method 8015M - Modified 8015 1 TPH (Gasoline Range) ug/L 0 300 - 86 - 91 - 80 124 6 - - 83 - 82 - 71 130 2 25 - [a,a,a-Trifluarotoluene] Percent 98 - - 99 - 99 - 76 126 - - - 105 - 105 - 76 126 - - - � Batch GAS*989019 Method 8020A - Aromatic Volatile Organics Benzene ug/L 0 5 - 99 - 104 - 76 155 5 - - 95 - 97 - 70 153 1 25 - Toluene ug/L 0 5 - 101 - 106 - 76 122 5 - - 84 - 84 - 70 124 0 25 - Ethylbenzene ug/L 0 5 - 99 - 105 - 76 119 5 - - 97 - 97 - 71 119 0 25 - Methyl-tert-butylether ug/L 0 30 - 101 - 106 - 58 147 4 - - 97 - 98 - 53 177 1 30 - Total Xylen*ers ug/L 0 26 20 - 101 - 106 - 74 118 5 - - 83 - 83 - 72 117 0 25 - 0