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Lancaster Report <br /> Laboratories <br /> Analysispo <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-65&2300 Fax:717-656-2681•www.lancaSterlabs.com <br /> Page 1 of 5 <br /> I <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 893483 <br /> Reported: 05/11/04 at 11:17 AM <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 Result MDL Units REC REC Limits RPA RPD Max <br /> Batch number: 041170001A Sample number(s) : 4261102-4261112 <br /> TPH - DRO CA LUPT (Waters) N.D. 50. ug/l 91 91 61-126 0 20 <br /> Batch number: 041170003A Sample number(s) : 4261102-4261112 <br /> Total TPH N.D. 40. ug/l 98 99 43-119 2 20 <br /> TPH Motor Oil C16-C36 N.D. 40. ug/l <br /> Batch number: 0411BA0713 Sample number(s) 4261101-4261110 <br /> TPH-GRO - Waters N.D. 50. ug/1 94 99 70-130 5 30 <br /> Batch number: 04118A07C Sample number(s) 4261111-4261112 <br /> TPH-GRO - Waters N.D. 50. u9/1 94 99 70-130 5 30 <br /> Batch number: 041200017A Sample number(s) : 4261102-4261106 <br /> Methanol (by Direct Injection) N.D. 1000. ug/l 116 76-119 <br /> Batch number: 041250021A Sample number(s) : 4261109-4261112 <br /> �Methano1—(by-I)i,rect,Inj,ection}—N•.D. 1000.. ug/l 96 _ 7.6119 <br /> Batch number: P041241AA Sample number(s) : 4261102-4261105 <br /> Ethanol N.D. 500. ug/1 99 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 2. ug/1 96 77-127 <br /> di-isopropyl ether N.D. 2. ug/1 92 67-130 <br /> Ethyl t-butyl ether N.D. 2. ug/l 94 74-120 <br /> t-Amyl methyl ether N.D. 2. ug/l 98 79-113 <br /> t-Butyl alcohol N.D. 100. ug/l 140 57-141 <br /> Benzene N.D. .5 u9/1 97 85-117 <br /> 1,2-Dichloroethane N.D. 2, ug/l 92 77-132 <br /> Toluene N.D. .5 ug/1 94 85-115 <br /> 1,2-Dibromoethane N.D. 2. ug/l 94 81-114 <br /> Ethylbenzene N.D. .5 ug/l 95 82-119 <br /> Xylene (Total) N-D. .5 ug/1 96 84-120 <br /> Batch number: P041242AA Sample number(s) : 4261101 <br /> Methyl Tertiary Butyl Ether N.D, 2. ug/l 103 77-127 <br /> Benzene N.D. .5 ug/l 103 85-117 <br /> Toluene N.D. .5 ug/l 103 85-115 <br /> Ethylbenzene N.D. .5 ug/l 103 82-119 <br /> Xylene (Total) N.D. .5 ug/l 104 84-120 <br /> Batch number: P041251AA Sample number(s) : 4261106-4261112 <br /> Ethanol N.D. 500. ug/1 103 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 2, ug/l 101 77-127 <br /> di-Isopropyl ether N.D. 2. u9/1 95 67-130 <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 />