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U <br /> Lancaster <br /> Analysis Report <br /> Laboratories <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425o717-656-2300 Fax:717-6%2681•www.lancasterlabs.com <br /> { j) <br /> Page 1 of 2 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 940586 <br /> Reported: 04/28/05 at 06 :34 PM i <br /> Matrix QC may not be reported if site-specific QC samples were not `J <br /> submitted. In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the I <br /> method. <br /> I <br /> Laboratory Compliance Quality Control <br /> BlankBlank Report LCS LCSD LCS/LCSD '� �y <br /> Analysis Result MDL Units REC %REC Limits RPD RPA Max <br /> Batch number: 05114A16A Sample number(s) 4509371-4509374 } <br /> TPH-GRO - Waters N.D. 50. ug/l 101 103 7D-130 2 30 ._11 <br /> Batch number: Z051163AA Sample.number(s) 4509371-4509374 <br /> Ethanol N.D. 50. u9/1 93 30-155 <br /> Methyl Tertiary Butyl Ether N.R. 0.5 ug/l 90 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 91 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/1 89 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/1 90 79-113 E <br /> t-Butyl alcohol N.D. 5. ug/1 100 57-141 <br /> Benzene N.D. 0.5 ug/l 92 1 85-117 f i <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 98 77-132 k �t <br /> Toluene N.D. 0.5 ug/l 98 85-115 1 <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 94 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 101 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 103 83-113 <br /> a l <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD' BKG DUP DUP Dup RPD <br /> An- alYele .Name %REC %REC Limits RPD MAX Conc Conc RPD Max 3� <br /> Batch number: 05114AIGA Sample number(s) : 4509371-4509374 ; <br /> TPH-GRO - Waters 116 63-154 <br /> Batch number: Z051163AA Sample number(s) : 4509371-4509374 <br /> Ethanol 93 85 26-153 8 30 <br /> Methyl Tertiary Butyl Ether 90 91 69-134 2 30 <br /> di-Isopropyl ether 93 93 75-130 . 1 30 a <br /> Ethyl t-butyl ether 90 90 78-119 0 30 <br /> t-Amyl methyl ether 91 92 77-117 0 30 <br /> t-Butyl alcohol 98 96 51-147 2 30 <br /> Benzene 98 99 83-128 1 30 <br /> 1,2-Dichloroethane 101 102 73-136 2 30 <br /> Toluene 104 106 83-127 1 30 <br /> 1,2-Dibromoethane 92. 95 78-120 3 30 <br /> Ethylbenzene 105 106 82-129 1 30 <br /> Xylene (Total) 106 107 82-130 1 30 <br /> :y. a <br /> r-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 /> r � <br /> off <br /> f <br /> L# <br />