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1 ' <br /> Lancaster <br /> Analysis Re p ort <br /> . Laboratories Y p � <br /> 2425 New Holland Pike,PO Bax 12425,Lancaster,PA 17605-2425-717.656-2300 Fax:717-656.2681•wwwlanoasterlabs.com ■ <br /> Page 1 of 2 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 933903 <br /> Reported: 03/09/05 at 02:16 PM. - ? <br /> Matrix QC may not be reported if site-specific QC samples were not <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 <br /> method. I. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %RBC %REC Limits RPD RPD Max <br /> Batch number: 05063ACBC Sample number(s) : 4474690-4474693 <br /> TPH-GRO - Waters N.D. S0. ug/l 100 102 #70-130 2 30 <br /> Batch number: Z050673AA Sample number(s) : 4474690-4474693 <br /> Ethanol N.D. 50. ug/l 99 30-155 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 89 77-127 <br /> di-Isopropyl ether N:D. 0.5 ug/l 84 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 87 74-120 - <br /> t-Amyl methyl ether N.D. 0.5 ug/l 87 79-113 <br /> t-Butyl alcohol N.D. 5. ug/1 91 57-141 <br /> Benzene N.D. 0.5 ug/l 90 85-117 � <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 92 77-132 o <br /> Toluene IN.D. 0.5 ug/l 90 85-115 <br /> 1,2-Dibromoethane N.D.` 0.5 ug/l 91 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 92 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 93 83-113 <br /> I <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BEG DUP DUP DUP RPD ' <br /> Analysis Name %REC %REC Limits RPD MAX Cone Conc. ;RPD Maxim <br /> Batch number: 05063ACBC Sample number(s) : 4474690-4474693 • - <br /> TPH-GRO - Waters 81 63-154 <br /> Batch number: Z050673AA Sample number(s) : 4474690-4474693 I <br /> Ethanal 122 127 26-153 4 30 <br /> Methyl Tertiary Butyl Ether 91 92 69-134 1 30 ' <br /> di-Isopropyl ether 89 89 15-130 1 30 <br /> Ethyl t-butyl ether 90 91 78-119 1 30 ' <br /> t-Amyl methyl ether 89 88 77-117 1 30 <br /> t-Butyl alcohol 89 86 51=147 2 30 <br /> Benzene 95 96 83-128 1 30 <br /> 1,2-Dichloroethane 96 97 73-136 1 30 <br /> Toluene 96 97 83-127 1 30 <br /> . 1',2-Dibromoethane 91 91 78-120 0 30 <br /> Ethylbenzene 98 99 82-129 1 30 <br /> Xylene (Total) : 98 98 82-130 0 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 /> U <br />