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i <br /> Lancaster ort <br /> . Laboratories Analysis Re p <br /> 2425 New Holland Pike Pp Box 12425 Lancaster PA 17605.2425•717-656-2300 Fax�17-656-2681•www IancasterlabS com <br /> ` Page l of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco c/o SECOR Group Number 965274 <br /> Reported 11/11/05 at 03 38 PM <br /> Matnx 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 SIA $REC Lim3.ta RPD RPD Max <br /> Batch number 0530SA07A Sample number(s) 4635978-46p5979,4635981-4635982 <br /> TPH-GRO - Waters N D 5o ug/l 1I 96 93 70-130 3 30 <br /> Batch number OS305AOSA Sample number(s) 4635983-4615985 <br /> TPH-GRO - Waters N D 50 ug/l 108 107 70-130 1 30 <br /> Batch number 05308A07A Sample number{s) 4635980 <br /> TPH-GRO - Waters N D 5o ug/1 103 102 70-130 1 30 <br /> 16h0-1number OS3140023A Sample numbers) 4635979-4635985(by Direct In3ection) N D 200 ug/1 1008D-120 <br /> Batch number Z053052AA Sample number s) 4635976 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 104 77-127 <br /> Benzene N D 0 5 u9/1 88 85-117 <br /> Toluene N D 0 5 u9/1 91 85-115 <br /> Ethylbenzene N D 0 5 ug/l 91 82-119 <br /> Xylene (Total) N D 0 5 ug/l 91 53-113 <br /> Batch number Z053083AA Sample numbers) 4635979-4635985 <br /> Ethanol N D 50 ug/l 109 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 106 77-127 <br /> di-Isopropyl ether N D 0 5 ug/1 89 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/1 94 74-120 <br /> t-Amyl methyl ether N D 0 5 u9/1 96 79-113 <br /> t-Butyl alcohol N D 5 ug/l 88 60-133 <br /> Benzene N D 0 5 ug/l 91 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/1 98 77-132 <br /> Toluene N D 0 5 ug/1 91 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/1 89 81-114 <br /> Ethylbenzene N D 0 5 ug/1 93 82-119 <br /> Xylene (Total) N D 0 5 1ag/1 96 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD APD BRG DUP DUP Dup RPD <br /> Anal_YAxs Name %REC +BREI' Limits RPD MAX Conc Conc RPD Max <br /> Batch number 05305AO7A Sample number(s) 4635978-4635979,4635981-4635982 <br /> TPH-GRO - Waters 100 63-154 <br /> Batch number 05305AOSA Sample number(s) 4635983-4635985 <br /> *-Outside of specification <br /> (1) The result for one or bath determinations was less than five times the LOQ <br /> 16 The background result was more than four times the spike added <br />