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Lancaster <br /> Analysis Re ort o <br /> . Laboratories Y � <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656.2300 Fax:717-656-2681•www.lancasterlabs.com <br /> Page 1 of 3 , <br /> Quality Control Summary ` <br /> Client Name: ChevronTexaco Group Number:, .930537 <br /> Reported: 02/14/05 at 11:40 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 s <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method. <br /> Laboratory Compliance Quality Control <br /> + Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Result MDL units %REC. .I;%REC Limits RPD RPD Max- [[ <br /> Batch number: 05040A56A Sample number(s) : 4458804-4458807 { <br /> TPH-GRO - Waters N.D. 50. ug/1 95 92 70-130 3 30 I <br /> Batch number: Z050381AA Sample number(s) 4458804-4458805 <br /> Ethanol N.D. 50. ug/l 8o * `46-145 ' <br /> Methyl Tertiary Butyl Ether N.D. 0.5 u9/1 93 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 74 67-130 U <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 101 79-11.3:- <br /> t-Butyl alcohol N.D. 5. ug/l 96 57-141 j` .111WA4er <br /> Benzene N.D. 0.5 ug/l 92 ;I 85-117 <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 94 77-132 <br /> Toluene N.D. 0.5 ug/l 94 85-115 U <br /> 1,2-Dibromoethane N.D. 0.5 u9/1 97 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 95 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 99 83-113 <br /> Batch number: Z050441AA Sample'number(s) : 4458806-4458807 ` <br /> Ethanol N.D. 50. ug/l 102 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 90 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 88 67-130 I� <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 91 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 93 79-113- ; <br /> t-Butyl alcohol N.D. 5. ug/l 94 57-141 <br /> Benzene N.A. 0.5 ug/l 94 85-117 <br /> .1,2-Dichloroethane N.D. 0.5 ug/l 97 77-132 <br /> Toluene N.D. 0.5 ug/i 95 85-115 <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 94 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 94 82-119 JJJ <br /> Xylene (Total) N.D. 0.5 ug/1 96 83-113' <br /> Sample Matrix Quality Control <br /> 1� <br /> MS MSD MS/MSD RFD $RGI DVP DDP Dup RPD <br /> Analysis_ e_ %REC %REC Limits RPD MAX Conc Cone RPD: - Max <br /> Batch number: 0504OA56A Sample number(s) : 4458804-4458807 <br /> TPH-GRO - Waters 97 63-154 <br /> Batch number: Z050381AA Sample number(s) : 4458804-4458805 <br /> Ethanol 84 78 33-153 8 30 �z <br /> Methyl Tertiary Butyl Ether 96 95 69-134 1 30 <br /> *-Outside of specification I' <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 />