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LancasterAnalysis nalys�s Report <br /> 2425 New Holland Pike,PO Boot 12425,Lancaster,PA 17605-2425+717-656-2300 Fax:717-656-2681•www.lancasterlabs.com <br /> Page 1 of 4 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 934602 <br /> Reported: 03/15/05 at 04:21 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 /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Reault MDL Unite RE JRHC Limits RPD RPD Max <br /> Batch number: 05068A16B Sample number(s) : 4478000-4478002 <br /> TPH-GRO - Waters N.D. 50. ug/1 104 103 70-130 1 30 <br /> Batch number: 05069A16A Sample number(s) : 4478003-4478008 <br /> TPH-GRO - Waters N.D. 50. ug/1 98 100 70-130 1 30 <br /> Batch number: Z050702AA Sample number(s) : 4478000-4478002 <br /> Ethanol N.D. 5o. ug/1 107 30-155 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/1 89 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/1 86 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 88 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 8s 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 90 57-141 <br /> Benzene N.D. 0.5 ug/1 89 85-117 <br /> 1,2-Dichloroethane N.D. 0.5 ug/1 93 77-132 <br /> Toluene N.D. 0.5 ug/l 94 85-115 <br /> 1,2-Dibromoethane N.D. 0.5 ug/1 87 81-114 <br /> Ethylbenzene N.D. 0.5 ug/1 95 82-119 <br /> Xylene (Total) N.D. 0.5 ug/1 95 83-113 <br /> Batch number: Z050703AA Sample number(s) : 4478003-4478006 <br /> Ethanol N.D. 50. ug/1 97 30-155 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/1 90 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/1 85 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/1 68 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/1 88 79-113 <br /> t-Butyl alcohol N.D. 5. ug/1 99 57-141 <br /> Benzene N.D. 0.5 ug/1 91 85-117 <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 97 77-132 <br /> Toluene N.D. 0.5 ug/l 93 65-115 <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 93 81-114 <br /> Ethylbenzene N.D. 0.5 ug/1 94 82-119 <br /> Xylene {Total) N.D. 0.5 ug/l 94 83-113 <br /> Batch number: Z050712AA Sample number{s) : 4478000 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/1 95 77-127 <br /> t-Butyl alcohol N.D. 5. ug/1 93 57-141 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DIIP DIIP Dup RPD <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 />