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Lancaster <br /> Laboratories Analysis Re ort 1 <br /> p i <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605 2425 717 656 2300 Fax 717 656 2681 WWW lancasterlabs Com <br /> Page i of 2 <br /> Quality Control Summary ' <br /> Client Name ChevronTexaco Group Number 894553 <br /> Reported 05/14/04 at: 05 37 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 LCB/LCSD <br /> ram Result E0L Unite R8 %RE Limits R RPS Max <br /> Batch number 04127A07E Sample number(s) 4266325 ' <br /> TPH-GRO - Waters N D 50 ug/l 86 86 70-130 1 30 <br /> Batch number 041310024A Sample number(a) 4266325 <br /> Methanol-(by-Direct-Injection)—N-D 200 ug/I 92 76-119 ; <br /> Batch number P041331AA Sample number(s) 4266325 <br /> Ethanol N D 50 ug/l 97 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 98 77-127 <br /> di-Isopropyl ether N D 0 5 u9/1 92 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 92 74-120 ' <br /> t-Amyl methyl ether N D 0 5 ug/l 101 79-113 <br /> t-Butyl alcohol N D 5 ug/l 109 57-141 <br /> Benzene N D 0 5 ug/l 99 85-117 <br /> 1.2-Di chloroethane N D 0 5 ug/l 92 77-132 <br /> Toluene N D 0 5 u9/1 95 85-115 ' <br /> 1,2-Dibromoethane N D 0 5 ug/l 95 81-114 <br /> Ethylbenzene N D 0 5 ug/l 93 62-119 <br /> Xylene (Total) N D 0 5 ug/l 96 84-120 <br /> Sample Matrix Quality Control ' <br /> ISS MSD VEINED RPD EKG DVP DUP Dup RPD <br /> AnalysisNAM c- {R8C At Lai to RPD K X Conc C. oac J?D <br /> Batch number 04127A07E Sample number(s) 4266325 1 ' <br /> TPH-GRO - Waters 89 63-154 _ <br /> Batch number 041310024A Sample number(B) 4266325 <br /> Methanol (by Direct 1n3ectnon) 96 96 72-122 0 20 ' <br /> Batch number P041331AA Sample number(s) 4266325 <br /> Ethanol 99 8o 41-155 21 30 <br /> TMethyl Tertiary Butyl Ether 102 94 69-134 8 30 <br /> Isopropyl ether 97 89 75-130 6 30 <br /> Ethyl t-butyl ether 95 88 78-119 8 30 <br />-- — t-Amyl methyl ether- — ----lb3- `-_94 -77=117- _9 30 _- <br /> t-Butyl alcohol 112 100 51-147 12 30 <br /> Benzene 105 97 83-126 8 30 <br /> 1,2-Dichloroethane 96 87 73-136 9 30 <br /> Toluene 104 92 83-12 13 30LL <br /> 1 2-Dibromoethane 100 90 78-12p0 11 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 <br />