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' h <br /> f .• <br /> Lancaster <br /> Laboratories Analysis Report <br /> 2425 New.Holland Pike,PO Box 12425,Lancaster,PA 17605-2425.717.656-2300 Fax:717-656-2681•www.lancasterlabs.com <br /> i Page I of 2 } <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number: 915293 <br /> Reported: 10/16/04 at 02:35 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 LC5/LCSD was performed,unless otherwise specified in the <br /> method. <br /> } <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result bML Unita RBC RHC Limits RPD RPD Max <br /> Batch number: 04284A16A sample number(s) , 4371332-4371333 <br /> TPH-GRO -'Waters N.D. 50. ug/1 100 90 70-130 10 30 <br /> F <br /> Batch number: Z042691AA Sample number(s) : 4371332-4371333 <br /> Ethanol: : N.D. 50. ug/l 80 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 88 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 88 67-130 <br /> Ethyl t'-butyl ether N.D. 0.5 ug/1 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/l 90 <br /> 57-141 <br /> Benzene' N.D. 0.5 ug/l 90 85-117 <br /> 1,2-Dichloroethane, N.D. 0.5 ug/l 93 77-132 <br /> Toluene . N.D. 0.5 ug/l 90 85-115 <br /> 1,2-Dib'romoethane - N.D. 0.5 ug/1 90 81-114 L <br /> Ethylbenzene N.D. 0.5 ug/1 91 82-119 <br /> Xylene -(Total) N.D. 0.5 ug/1 93 83-113 Ilkr <br /> Sample Matrix Quality Control <br /> i f MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analvsin Name bREC RRC Limits RPD MAX Conc one RPD Max <br /> Batch number: 04284A16A Sample number(s) : 4371332-4371333 <br /> TPH-GPO[ -:Waters 108 63-154 <br /> Batch number: Z042891AA Sample number(s) : 4371332-4371333 ' l <br /> Ethanol; 75 79 33-153 5 30 <br /> Methyl Tertiary Butyl Ether 89 90 69-134 1 30 3 <br /> di-Isopropyl ether 91 92 75-130 1 30 <br /> Ethyl t=butyl ether 89 90 78-119 1 30 <br /> t-Amyl methyl ether 88 88 77-117 1 30 <br /> t-Butyl,alcohol 97 92 51-147 3 30 <br /> Benzene 94 95 83-128 1 30 1 <br /> 1,2-Dichloroethane, 94 95 73-136 1 30 <br /> Toluene, 1 94 94 83-127 0 30 <br /> 1,2-Dibromoethane 91 90 78-120 1 30 <br /> 1. L Ethylbenzene 96 95 82-129 0 30 <br /> Xylene !(Total) 95 95 82-130 0 30 <br /> i <br /> k *-Outside of specification r <br /> L ,N <br /> (1) They6ult for one or both determinations was less than five times the LOQ. ) <br /> (2) Thebackground result was more than four times the spike added. <br /> `R ry I <br /> I� <br /> I <br />