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4 <br /> i <br /> f It e <br /> le <br /> .E .i <br /> (A 'Lancaster <br /> r :Laboratories Analysis Report i <br /> �✓ 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterlabs.Com <br /> w, <br /> ` I, <br /> 1" <br /> Pagel of 2 <br /> 11 r <br /> E+ N <br /> Quality Control Summary <br /> I� <br /> I" Client Name: ChevronTexaco Group Number: 916509 <br /> il- <br /> Reported: 10/27/04 at; 02:37 PM <br /> f, L I� <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> f: submitted,` In these situations,to demonstrate precision and accuracy at <br /> f; a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method.' <br /> .i 0Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result FIDL Units %REC %REC Limits RPI) RPD Max I <br /> Ir Batch number: 0429,OA07C Sample number(s) 4379192-4379193 <br /> TPH-GRO a Waters N.D. 50. ug/l 109 96 70-130 12 30 <br /> `+ r <br /> Batch number: Z042991AA Sample number(s) : 4379192-4379193 <br /> Ethanol N.D. 50. ug/l 99 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 107 67-130 <br /> ` Ethyl t-butyl ether N.D. 0.5 ug/l 104 74-120 <br /> t-Amyl -methyl ether N.D. 0.5 ug/l 98 79-113 1 <br /> ti t-Butyl' alcohol N.D. 5. ug/1 102 57-141 <br /> Benzene ;i N.D. 0.5 ug/l 95 85-117 <br /> 1,2-Dichloroethane, N.D. 0.5 ug/l 114 77-132 <br /> I, Toluene 11. i N.D. 0.5 ug/l 100 85-115 <br /> 4f 1,2-Dibromoethane N.D. 0.5 ug/l 100 81-114 <br /> Ethylhenzene N.D. 0.5 ug/1 104 $2-119 <br /> Xylene�(Total) E N.D. 0.5 ug/l 101 83-113 <br /> E' Sample Matrix Quality Control <br /> 13 <br /> I MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> i' Analysis 'Name $REC %REC Limits RPD MAX Cone Conn RPD Max <br /> k ; <br /> Batch number: 04290A07C Sample number(s) : 4379192-4379193 <br /> TPS-GRO Waters 123 63-154 <br /> �. <br /> Batch number: Z042991AA Sample number(s) : 4379192-4379193 <br /> Ethanol a 106 87 33-153 20 30 <br /> Methyl 'Tt`rtiary Butyl Ether 96 87 69-134 2 30 If <br /> di-Isopropyl etherr 110 112 75-130 2 30 <br /> Ethyl t-butyl ether 106 108 78-119 3 30 <br /> I t-Amyl methyl ether 98 100 77-117 2 30 <br /> 4 t-Butyl alcohol 101 100 51-147 1 30 <br /> I` Benzene 98 100 83-128 1 30 <br /> 1,2-Dichloroethane' 116 118 73-136 2 30 <br /> Toluene '( 104 106 83-127 2 30 i <br /> 1,2-Dibromoethane 98 100 78-120 2 30 <br /> Ethylbenzene 105 108 82-129 2 30 <br /> Xylene (total) 101 103 82-130 2 30 <br /> *-Outside of specification <br /> 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 IpII 'e <br /> ,y I t <br />