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LancasterAnalysis�s. <br /> Re <br /> . Laboratories �ort.�� <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 176052425•717-656.2300 Fax 717-656-2681•www.lancasterlabs.eom ` <br /> Page I of 3 <br /> Quality Control Summary f <br /> Client Name: ChevronTexaco '� Group Number: 931373 <br /> Reported: 02/21/05 at 04:56 PM a <br /> Y, { <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 1 <br /> a batch level,a LCS/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 MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number: 05043A56A Sample number(s) 4462565-4462568 <br /> TPH-GRO - Waters N.D. 50. ug/l 101 41 104 70'130 3 30 <br /> Batch number: Z050461AA Sample number(s) : 4462565-4462567 <br /> Ethanol N.D. 50. ug/l 98 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 93 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 90 67-130 i <br /> Ethyl t-butyl ether N.D. 0.5 ug/1 92 74-120 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 95 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 91 57-141 ., <br /> Benzene N.D. 0.5 ug/1 93 85-117 { <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 91 77-132 <br /> Toluene N.D. 0.5 ug/l 93 85-115 U <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 94 81-114 , <br /> Ethylbenzene N.D. 0.5 ug/l 93 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 94 83-113 i 4 <br /> Batch number: Z050501AA Sample number(s) ; 4462568 <br /> Ethanol N.D. 50. ug/l 100 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 106 77-127 <br /> di-Isopropyl ether N.D. " 0.5 ug/l 102 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 108 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 100 57-141 <br /> Benzene N.D. 0.5 ug/l 105 85-117 <br /> 1,2-Dichloroethane N.D. 0.5 ug/l 103 fl. 77-132 <br /> Toluene N.D. 0.5 ug/l 107 65-115 <br /> 1,2-Dibromoethane N.D. 0.5 ug/l 103 B1-114 <br /> Ethylbenzene N.D. 0.5 ug/l 107 82-119 _ <br /> Xylene (Total) N.D. 0.5 ug/l 108 83-113 <br /> ' Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD EKG DUP DUP Dup RPD <br /> Analysis Name %REC %RHC Limits RPD MAX i; Conc Cone RPD Max <br /> Batch number: 05043A56A Sample number(s) : 4462565-4462568 F <br /> TPH-GRO - Waters 91 63-154 ; <br /> Batch number: Z050461AA Sample number(s) : 4462565-4462567 4 <br /> Ethanol 96 A. 102 33-153 7 30 <br /> Methyl Tertiary Butyl Ether 108 102 69-134 2 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. i. <br /> E� <br />