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Lancaster : - <br /> Laboratories Ainalysis Report <br /> 2425 New Holland Pike,Pa Box 12425,Lancaster,PA 17605-2425-717-656-2800 Fax'717-656-2681•www.lancasterlabs.com <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client: Name: ChevronTexaco Group Number: ,929713 <br /> Reported: 02/02/05 at 10:14 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 Result MDL Units %RSC �, REC Limits RPD RPD Max <br /> Batch number: 05032A51A Sample number(s) : 4454554-4454557 <br /> TPH-GRO - Waters N.D. 50. ug/l 95 98 70-130 4 30 <br /> Batch number; Z050311AA Sample number(s) : 4454554 <br /> Ethanol N.D. 50. ug/1 106 46-145 <br /> Methyl. Tertiary Butyl Ether N.D. 0.5 ug/1 105 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 103 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 106 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 106 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 101 57-141 <br /> Benzene N.D. 0.5 ug/l 104 65-117 / <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 109 77-132 /) <br /> Toluene N.D. 0.5 ug/l 106 85-115 <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 103 81-114 s <br /> Ethylbenzene N.D. 0.5 ug/l 109 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 108 R 83-113 ' <br /> Batch number: Z050313AA Sample number W : 4454555-4454557 �] <br /> Ethanol N.D. 50. ug/1 93 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 101 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 97 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 101 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 102 79-113. . <br /> t-Butyl alcohol N.D. 5. ug/l 97 57-141 <br /> Benzene N.D. 0.5 ug/l 101 85-117' <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 108 77-132 , <br /> Toluene N.D. 0.5 ug/1 104 BS-115 i <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 99 81-114 <br /> Ethylbenzene N.D. 0.5 ug/l 107 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 106 83-113 <br /> Batch number: Z050321AA Sample number(s) ; 4454557 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 103 77-127 <br /> Sample Matrix Quality Control <br /> MS a MSD MS/MSD RPD BXG DUP DUP Dup RPD <br /> Analysis Name REC , %R19 Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 05032A51A Sample number(s) : 4454554-4454557 <br /> TPH-GRO - Waters 115 63-154 <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 /> i..7 . <br />