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0 Pagel of 2 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 811998 <br /> Reported 06/28/02 at 02 02 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report TICS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number 02173A55A Sample number(s) 3839037-3839039 <br /> TPH-GRO - Waters N D 50 ug/l 79 86 76-126 9 30 <br /> Batch number P021721AA Sample number(s) 3839037 <br /> Methyl t-butyl ether N D 5 ug/1 119 77-127 <br /> Benzene N D 5 ug/1 109 84-120 <br /> Toluene N D 5 ug/1 107 86--123 <br /> Ethylbenzene N D 5 ug/l 110 88-124 <br /> Xylene (Total) N D 5 ug/l 112 89-124 <br /> Batch number P021722AA Sample number(s) 3839038-3839039 <br /> Methyl t-butyl ether N D 5 ug/l 116 77-127 <br /> Benzene N D 5 ug/1 108 84-120 <br /> Toluene N D 5 ug/1 l04 86-123 <br /> Ethylbenzene N D 5 ug/1 107 88-124 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 02173A55A Sample number(s) 3839037-3839039 <br /> TPH-GRO - Waters 87 74-132 <br /> Batch number P021721AA Sample number(s) 3839037 <br /> Methyl t-butyl ether 117 119 69-134 2 30 <br /> Benzene 112 112 78-134 1 30 <br /> Toluene 110 109 78-133 1 30 <br /> Ethylbenzene 113 113 82-134 0 30 <br /> Xylene (Total) 116 116 81-136 0 30 <br /> Batch number P021722AA Sample number(s) 3839038-3839039 <br /> Methyl t-butyl ether 110 111 69-134 0 30 <br /> Benzene 114 115 78-134 1 30 <br /> Toluene 112 111 78-133 1 30 <br /> Ethylbenzene 115 115 62-134 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02173A55A <br /> Trifluorotoluene-F <br /> 3839037 88 <br /> 3839038 88 <br /> 3839039 a8 <br /> Blank 88 <br /> GCS 97 <br /> LCSD 98 <br /> MS 100 <br /> Limits 67-135 <br /> *-Outside of specification <br /> (1) The result for one or both deternunattons was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />