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.r <br /> r <br /> , <br /> Lancaster Laboratories Page ] of2 <br /> . WherQ dal3 y seoHrol Summary <br /> Client Name Chevron Products Company Group Number 781347 <br /> Reported 10/20/01 at 12 43 AM <br /> Laboratory Complxance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number 01283A53 Sample number(s) 3702597-3702600 <br /> Benzene N D 0 5 ug/l 97 98 80-118 1 30 <br /> Toluene N D 0 5 ug/1 95 95 82-119 0 30 <br /> Ethylbenzene N D 0 5 ug/l 98 98 81-119 0 30 <br /> Total Xylenes N D 1 5 ug/1 97 98 82-120 2 30 <br /> Methyl tert-Butyl Ether N D 2 5 ug/l 102 102 79-127 0 30 <br /> TPH--GRO N California (Waters) N D 50 ug/1 109 107 76-119 2 20 <br /> Batch number. 012840024A Sample number(s) 3702598-3702600 <br /> Methanol (by Direct Injection) N D 1000 ug/l 117* 80-113 <br /> Batch number U012831AA Sample number(s) 3702598-3702600 <br /> Ethanol N D 500 ug/1 74 70-130 <br /> Methyl t-butyl ether N D 2 ug/l 84 77-127 <br /> di-Isopropyl ether N D 2 ug/l 91 74-125 <br /> Ethyl t-butyl ether N D 2 ug/i 85 74-120 <br /> t-Amyl methyl ether N D 2 ug/l 90 77-118 <br /> t-Butyl alcohol N D 100 ug/1 92 58-147 <br /> Sample Matrix Qual3.ty Control <br /> • MS MSD MS/MSD RPD BKG DUP DUP Dap <br /> RPD <br /> Analysis Name %REC %REC Limits RPD kdm Conc Conc RPD Max <br /> Batch number 01283A53 Sample number(s) 3702597-3702600 <br /> Benzene 76 96 66-140 24 30 <br /> Toluene 73 93 72-138 25 30 <br /> Ethylbenzene 74 95 71-138 25 30 <br /> Total Xylenes 73 94 69-140 25 30 <br /> Methyl tert-Butyl Ether 74 95 60-145 24 30 <br /> TPH-GRO N California (waters) 68* 90 74-132 28* 20 <br /> Batch number: 012840024A Sample number(s) . 3702598-3702600 <br /> Methanol (by Direct Injection) 108 108 78-114 0 20 <br /> Batch number U012831AA Sample number(s) 3702598-3702600 <br /> Ethanol 83 68* 70-130 20 30 <br /> Methyl t-butyl ether 73 78 69-134 1 30 <br /> di-Isopropyl ether 89 87 75-128 2 30 <br /> Ethyl t-butyl ether 84 84 73-123 0 30 <br /> t-Amyl methyl ether 87 86 69-126 1 30 <br /> t-Butyl alcohol 68 91 50-157 3 30 <br /> Surrogate Qual3Lty Control <br /> *-Outside of speclficahon <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br /> Lancaster Laboratories,Inc <br /> M I` M B E R 2425 New Helfand Pike <br /> �w La Box 124 <br /> 25 <br /> La <br /> � n aster,AAA <br /> 17605-2425 <br /> 717-656-2300 fax 717-656-2681 2216 Rev 9/11/00 <br />