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I <br /> Lancaster <br /> . Laboratories Analysis 'Report �j <br /> .2425 New Holland Pike,PO Box 12425,Lancaster,PA 176052425•717-656-2300 Fax:717.6$6-2681•www.lancasteriabs.com � <br /> Page ] of 2 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 914473 <br /> Reported: 10/12/04 at 05:29 PM <br /> Matrix QC may not be reported ifsite-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. <br /> Laboratory Compliance Quality Control <br /> Blank. Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result. MDL Units 96C %RHC Limits RPD RPD Max <br /> Batch number: 04279A16B Sample number(s) , 4366267-4366268 J <br /> TPH-GRO - Waters N.D. 50. ug/l 88 87 70-130 2 30 <br /> I <br /> Batchnumber: Z042821AA Sample number(s) : 4366267-4366268 <br /> Ethanol N.D. 50. u9/1 86 46-145 , <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 95 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 105 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 98 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 94 79-113 <br /> t-Butyl alcohol N.D. S. ug/l 90 57-141 t <br /> Benzene N.D. 0.5 ug/1 97 85-117 F <br /> 1,2-Dichloroethane N.D. 0.5 ug/1 98 77-132t�f <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/1 94 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 91 83-113 i <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BAG DUP DUP Dup' RPD <br /> Analysis Name RBC RHC Limits RED MAX Coag Cone R_P Max <br /> Batch number: 04279A16B Sample number(s) : 4366267-4366268 <br /> TPH-GRO - Waters 102 98 63-154 3 30 <br /> Batch number: Z042821AA Sample number(s) : 4366267-4366268 <br /> Ethanol 89 86 33-153 4 30 <br /> Methyl. Tertiary Butyl Ether 99 97 69-134 2 30 <br /> di-isopropyl ether 109 108 75-130 1 30 <br /> Ethyl t-butyl ether 99 100 78-119 0 30 <br /> t-Amyl methyl ether 96 95 77-117 1 30 <br /> t-Butyl alcohol 93 90 51-147 4 30 <br /> Benzene 105 103 83-126 2 30 <br /> 1,2-Dichloroethane 100 99 73-136 1 30 <br /> Toluene 101 100 83-127 1 30 <br /> 1,2-Dibromoethane 93 91 78-120 3 30 <br /> Ethylbenzene 102 98 82-129 4 30 <br /> Xylene (Total) 94 93 82-130 2 30 <br /> *-Outside of specification <br /> (t) 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 /> I� <br />