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t -- <br /> Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Bax 12425 Lancaster PA 17605-2425•717 6552300 Fax 717 656-2681 www lancasterlabs com <br /> ` Page l of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco c/o SECOR Group Number 904094 <br /> Reported 07/27/04 at 12 57 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 � L_ Units %RSC %RHC Limits RPB RPD Max <br /> Batch number 0420OA08B Sample number s) 4312580-4312584 <br /> TPH-GRO - Waters N D So ug/l 93 103 70-130 10 30 <br /> Batch number 042010001A Sample numbers) 4312581-4312584 <br /> Methanol (by Direct In)ectlon) N D 200 ug/l 112 76-119 <br /> Batch number P042012AA Sample number(s) 4312580 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 108 77-127 <br /> Benzene N D 0 5 ug/l 108 85-117 <br /> Toluene N D 0 5 ug/l 109 85-115 <br /> Ethylbenzene N D 0 5 ug/l 110 82-119 <br /> Xylene (Total) N D 0 5 ug/l 108 _- - 84-120 - -� <br /> Batch number Z042041AA Sample number(s) 4312581-4312584 <br /> Ethanol N D 50 ug/l 82 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 105 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 113 67-130 <br /> Ethyl t-butyl ether N D 0 5 u9/1 100 74-120 <br /> -- t-Amyl--methyl=ether —N-D 0-5 ug/1 92 --79-113 <br /> t-Butyl alcohol N D 5 ug/l 92 57-141 <br /> Benzene N D 0 5 ug/l 98 85-117 <br /> -- -1-2-Dichlcroethane _N-D --0-5 -ug/1-—106-- 77-132-- --- --- <br /> Toluene N D 0 5 ug/l 97 85-115 <br /> 1 2-Dibromoethane N D 0 5 ug/l 103 81-114 <br /> =- — -- Ethylbenzene=---- _ = --== <br />