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Analysis • • <br /> Lancaster Laboratories Page 2 of <br /> Where quality I's a science. 0 <br /> Quality Control Summary <br /> Client Name: Chevron Products Company Group Number: 795493 <br /> Reported: 02/19/02 at 08:50 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCs LCSD LCS/LCSD <br /> Analysis Name Result MDI, Units $REC %REC Limits RPD RPD Max <br /> Batch number: V020362AB Sample number(s) : 3768302 <br /> Ethanol N.D. 500. ug/1 109 44-139 <br /> Methyl t-butyl ether N.D. 2. ug/l 87 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 95 74-125 <br /> Ethyl t-butyl ether N.D. 2. ug/l 88 74-120 <br /> t-Amyl methyl ether N.D_ 2. ug/l 88 71-114 <br /> t-Butyl alcohol N.D. 100. ug/l 105 59--139 <br /> 1,2-Dichloroethane N.D. 2. ug/l 99 77-132 <br /> 1,2-Dibromoethane N.D. 2. ug/l 90 84-119 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD B= DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Cone RPD Max <br /> Batch number: 020360003A Sample number(s) : 3768293-3768301 <br /> Methanol (by Direct Injection) 92 92 78-114 0 20 <br /> Batch number: 02036A02 Sample number(s) : 3768292,3768297,3768299-3768301 <br /> Benzene 91 77-131 <br /> Toluene 94 80-128 <br /> Ethylbenzene 95 76-132 <br /> Total xylenes 95 76-132 <br /> Methyl tert-Butyl Ether 91 61-144 <br /> TPH--GRO waters 140 74-132 <br /> Batch number: 02036A56 Sample number(s) : 3768293-3768296,3768298,3768302--3768306 <br /> Benzene 107 77-131 <br /> Toluene 106 80-128 <br /> Ethylbenzene 107 76-132 <br /> Total xylenes 106 76-132 <br /> Methyl tert-Butyl Ether 107 61-144 <br /> TPR-GRO - waters 96 74-132 <br /> Batch number: 020390020A Sample number(s) : 3768302-3768306 <br /> Methanol (by Direct Injection) 104 104 78-114 0 20 <br /> Batch number: V020351AA Sample number(s) : 3768293-3768298,3766300,3768304 <br /> Ethanol 123 128 70-130 4 30 <br /> Methyl t-butyl ether 100 100 69-134 0 30 <br /> di-Isopropyl ether 209 110 68-133 1 30 <br /> Ethyl t-butyl ether 102 100 73-123 2 30 <br /> t-Amyl methyl ether 99 97 69-118 1 30 <br /> t-Butyl alcohol 122 122 51-148 0 30 <br /> 1,2-Dichloroethane ill 111 75-141 0 30 <br /> 1,2-Dibromoethane 90 68 78-120 2 30 <br /> Batch number: V020362AA Sample number(s) : 3768299,3768301,3768303,3768305-3768306 <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 /> Lancaster Laboratories,Inc. <br /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lanca5ter,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 Rev.9111100 <br />