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LancasterAnalysis Report � <br /> Laboratories Y <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-856-2681•www.lancasterlabs.com , <br /> Page 2 of 6 <br /> Quality Control Summary , <br /> Client Name: ChevronTexaco Group Number: 925298 <br /> Reported: 01/03/05 at 07:38 PM ' <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max , <br /> Toluene N.D. 1. ug/kg 102 81-116 <br /> 1,2-Dibromoethane N.D. 1. ug/kg 89 77-114 <br /> Ethylbenzene N.D. 1. ug/kg 98 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 97 62-117 <br /> Batch number: A043551AA Sample number(s) : 4431242-4431251 75-125 , <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/kg 101 <br /> di Isopropyl ether N.D. 1. ug/kg 107 70-129 <br /> Ethyl t-butyl ether N.D. 1. ug/kg 100 71-124 <br /> t-Amyl methyl ether N.D. 1. ug/kg 95 63-129 <br /> t-Butyl alcohol N.D. 20. ug/kg 87 51-160 <br /> Benzene N.D. 0.5 ug/kg 98 77-119 <br /> 1,2-Dichloroethane N.D. 1. ug/kg 113 76-126 <br /> Toluene N.D. 1. ug/kg 99 81-116 <br /> 1,2-Dibromoethane N.D. 1. ug/kg 94 77-114 <br /> Ethylbenzene N.D. 1. ug/kg 98 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 94 82-117 <br /> Batch number: Q043561AA Sample number(s) : 4431234 <br /> Ethylbenzene N.D. 130. ug/kg 102 82-115 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DU'P DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max ' <br /> Batch number: 043520020A Sample number(s) : 4431234-4431251 <br /> TPH - DRO CA LUFT (Soils) (2) (2) 23-135 4 20 <br /> Batch number: 04354A31A Sample number(s) : 4431234-4431240,4431244-4431250 ' <br /> TPH-GRO - Soils 75 56 39-118 17 30 <br /> Batch number: 04354A31B Sample number(s) : 4431241-4431243 <br /> TPH-GRO - Soils 75 56 39-118 17 30 <br /> Batch number: 043555708002 Sample number(s) : 4431234-4431251 t <br /> Lead 97 95 75-125 2 20 5.35 6.42 18 (1) 20 <br /> Batch number: 043560002A Sample number(s) : 4431234-4431246 <br /> Ethanol (by Direct Injection) 71 73 54-122 3 20 ' <br /> Methanol (by Direct Injection) 8o 79 47-132 0 20 <br /> Batch number: 043560006A Sample number(s) : 4431247-4431251 <br /> Ethanol (by Direct Injection) 97 99 54-122 3 20 <br /> Methanol (by Direct Injection) 102 105 47-132 2 20 <br /> Batch number: 04356A02A Sample number(s) : 4431251 ' <br /> TPH-GRO - Soils 101 113 39-118 11 30 <br /> Batch number: A043441AB Sample number(s) : 4431234,4431238-4431241 <br /> Methyl Tertiary Butyl Ether 83 91 49-140 9 30 <br /> di-Isopropyl ether 101 103 55-132 2 30 <br /> Ethyl t-butyl ether B8 92 65-123 5 30 <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 /> f <br />