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/ 1 <br /> Lancaster <br /> Laboratories Analysis Reporfq <br /> 2425 New Holland Pike PO Box 12425 Lancasler PA 17605 2425•717 656 2300 Fax 717 656 2681 www lancasterlabs corn ' <br /> Page 2 of 6 <br /> Quality Control Summary - <br /> Client Name ChevronTexaco Group Number 894513 ' <br /> Reported 05/14/04 at 03 46 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LC8 LCSD LCs/LCSD <br /> Analysis Name eult WLVnitO %RE 06REC imita RPD RPD Max <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 97 77-127 <br /> di_ieopxopyl=ether N D 0 5 ug/1 93 67_130 = <br /> Ethyl t-butyl ether N D 0 5 ug/l 91 74-120 <br /> t-Amyl methyl ether N D 0 5 u9/1 96 79-113 <br /> t-Butyl alcohol N D 5 ug/l 99 57-141 ' <br /> Benzene N D 0 5 ug/l 98 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/1 91 77-132 <br /> Toluene N D 0 5 ug/l 95 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 95 81-114 <br /> Ethylbenzene N D 0 5 ug/l 94 62-119 ' <br /> Xylene (Total) N D 0 5 ug/l 97 84-120 <br /> Sample Matrix Quality Control <br /> NS MSD MS/MSD RPD SRU DVP DVP Dup RPD ' <br /> Analysis dame %REC %RBC U- im o RPD71V Conc Conc RPD Max <br /> Batch number 04126A07A Sample number(s) 4266187 <br /> TPH-GRO - Waters 105 63-154 1 <br /> Batch number 04126A55A Sample number(s) 4266196-4266214 <br /> TPH-GRO - Waters 93 63-154 <br /> Batch number 04127A07D Sample number(s) 4266188-4266192 ' <br /> TPH-GRO - Waters 89 63-154 <br /> Batch number 0412'7A07E Sample number(s) 4266193-4266195 <br /> TPH-GRO - Waters 89 63-154 <br /> Batch number 041280016A Sample number(s) 4266188 , <br /> Methanol (by Direct Injection) 92 92 72-122 0 20 <br /> Batch number 041280017A Sample number(a) 4266189-4266208 <br /> Methanol (by Direct Injection) 92 92 72-122 0 20 <br /> Batch number 041310024A Sample number(e) 4266209-4266214 , <br /> Methanol (by Direct Infection) 96 96 72-122 0 20 <br /> Batch number P041282AA Sample number(s) 4266167 <br /> Methyl Tertiary Butyl Ether 101 93 69-134 9 30 ' <br /> Benzene 106 95 83-128 11 30 <br /> Toluene 103 93_ 83-127 20 30 <br /> Ethylbenzene 104 93 82-329 11 30 <br /> Xylene (Total) 104 94 82-130 it 30 <br /> Batch number P041311AA Sample number(s) 4266188-4266195,4266197-4266203 <br /> Ethanol 82 72 41-155 13 30 <br /> -- — <br /> —Methyl-Tertiary Butyl--Ether - --93-^ --89--69-134---1-- <br /> di-Isopropyl <br /> --89'-----69-134----1—di-Isopropyl ether 92 87 75-130 5 30 <br /> Ethyl t-butyl ether 91 se 78-119 4 30 <br /> t-Amyl methyl ether 98 90 77-117 8 30 <br /> t-Butyl alcohol 140 128 51-147 8 30 <br /> Benzene 98 94 e3-128 1 30 <br /> *-Outside of specification ' <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />