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Lancaster <br /> . Laboratories A n a I ysis Report � <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425•717 656-2300 Fax 717-658-2681 www lancasterlabs com <br /> Page 1 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 931884 <br /> Reported 02/25/05 at 10 34 AM <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 1n the <br /> method <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unita %RRC RSC Limits RPD RPD Max <br /> Batch number 050470011A Sample number(s) 4465278-4465288 <br /> Total TPH N D 40 ug/l So 84 62-122 6 20 <br /> TPH Motor Oil C16-C36 N D 40 ug/l <br /> Batch number 050470012A Sample number(s) 4465278-4465288 <br /> TPH-DRO CALUFT(Waters) N D 50 ug/l 91 91 61-126 0 20 <br /> Batch number 05047A16A Sample number(s) 4465277-4465284,4465287-4465288 <br /> TPH-GRO - Waters N D 50 ug/l 104 107 70-130 2 30 <br /> Batch number 05048A16A Sample number(s) 4465285-4465286 <br /> TPH-GRO - Waters N D 50 ug/l 105 108 70-130 3 30 <br /> Batch number 050490012A Sample number(s) 4465278-4465283 <br /> Methanol (by Direct Injection) N D 200 ug/l 104 76-119 <br /> Batch number 050540021A Sample number(s) 4465284-4465288 <br /> Methanol (by Direct Injection) N D 200 u9/1 96 76-119 <br /> Batch number Z050492AA Sample number(s) 4465277 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 90 77-127 <br /> Benzene N D 0 5 ug/l 89 85-117 <br /> Toluene N D 0 5 ug/l 95 85-115 <br /> Ethylbenzene N D 0 5 ug/l 92 82-119 <br /> Xylene (Total) N D 0 5 ug/l 93 83-113 <br /> Batch number Z050531AA Sample number(s) 4465279-4465286 <br /> Ethanol N D 50 ug/l 104 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 90 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 90 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 91 74-120 <br /> t-Amyl methyl ether N D 0 5 u9/1 90 79-113 <br /> t-Butyl alcohol N D 5 ug/1 88 57-141 <br /> Benzene N D 0 5 ug/1 90 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 91 77-132 <br /> Toluene N D 0 5 ug/1 91 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 90 81-114 <br /> Ethylbenzene N D 0 5 ug/l 92 82-119 <br /> Xylene (Total) N D 0 5 ug/1 92 83-113 <br /> Batch number Z050532AA Sample number(s) 4465278 <br /> Ethanol N D So ug/l 111 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/1 93 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 97 67-130 <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 0 <br />