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I <br /> I <br /> .. Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Sox 12425,Lancaster,PA 17605-2425.717.656-2300 Fait 717-656-2681•www.lancaSterlabs-com <br /> Page I of 3 <br /> 1 <br /> 17 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 912634 <br /> Reported: 09/23/04 at 11:16 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. <br /> Laboratory Compliance Quality Control <br /> I <br /> Blank Blank Report LCS LCSD LCS/LCSD J <br /> Analvsia Name Result bML nits %REC %REC Limits RPD RPD Max I <br /> Batch 'nvmber: 0426IA16A Sample number(s) : 4355084-4355087 I <br /> I TPH-,110 ,- Waters N.D. 50. ug/l 94 92 70-130 2 30 { <br /> I <br /> F <br /> Batch'number: 7142651ALA Sample number(s) : 4355084-4355087 <br /> Ethanol ;i N.D. 50. ug/l 83 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 94 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 89 67-130 <br /> Ethyl t=butyl ether N.D. 0.5 ug/l 91 74-120 I <br /> t-Amyl methyl ether N.D. 0.5 ug/l 96 79-113 <br /> 1 t-Butyl alcohol N.D. 5. ug/l 88 57-141 <br /> ' Benzene N.D. 0.5 ug/l 91 85-117 <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 93 77-132 <br /> Toluene N.D. 0.5 ug/l 92 85-115 { <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 95 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 92 82-119 i <br /> Xylene (Total) N.D. 0.5 ug/l 91 83-113 i <br /> Batch number: Z042661AA Sample number(s) : 4355084 <br /> Ethanol N.D. 50. ug/l 83 46-145 <br /> di-IBopropyl ether N.D. 0.5 ug/l 94 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 94 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/1 98 79-113 <br /> t-Butyl ..alcohol N.D. S. ug/l 94, 57-141 <br /> Benzene N.D. 0.5 ug/1 100 85-117 <br /> 1,2-Dichloroethane N:D. 0.5 ug/l 93 77-132 <br /> Toluene. N.D. 0.5 u9/1 98 85-115 I <br /> 1,2-Dibromoethane N.D. 0.5 ug/1 97 81-114 I <br /> Ethylbenzene N.D. 0.5 u9/1 97 82-119 I <br /> Xylene (Total) N:D. 0.5 ug/l 97 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dup RPD <br /> Ana1YBi.a Name REC REC Limits RPD MAB Cone Cone RPD Max 1 <br /> Batch number: 0426IA16A Sample number(s) : 4355064-4355087 II <br /> TPH-GRO - Waters 105 63-154 <br /> I <br /> Batch'number: Z042651AA Sample number(s) : 4355084-4355087 <br /> Ethanol 78 75 33-153 4 30 <br /> Methyl Tertiary Butyl Ether 96 95 69-134 1 30 <br /> di-IBopropyl ether 92 91 75-130 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 /> f <br />