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Analysis • • <br /> Lancaster Laboratories Page 1 of 4 <br /> y Where qualityis a science. <br /> Quality Control Summary <br /> Client Name: Chevron c/o Gettler Ryan Group Number: 786603 <br /> Reported: 11/27/01 at 07:52 AM <br /> Laboratory Compliance 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: 013200016A Sample number(s) : 3728223-3728236 <br /> Methanol (by Direct Injection) N.D. 1000. ug/l 92 80-113 <br /> Batch number: 01320A53 Sample number(s) : 3728222 <br /> Benzene N.D- 0.5 ug/1 95 101 80-118 6 30 <br /> Toluene N.D. 0.5 ug/1 94 96 82-119 2 30 <br /> Ethylbenzene N.D. 0.5 ug/l 95 94 81-119 0 30 <br /> Total Xylenes N.D. 1.5 ug/l 91 90 82-120 1 30 <br /> Methyl tent-Butyl Ether N.D. 2.5 ug/l 104 109 79-127 5 30 <br /> TPH-GRO N. California (waters) N.D. 50. ug/l 90 91 76-119 1 20 <br /> Batch number: U013181AC Sample number(s) : 3728223-3728229 <br /> Ethanol N.D. 500. ug/l 76 70-130 <br /> Methyl t-butyl ether N.D. 2. ug/l 98 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 96 74--125 <br /> Ethyl t-butyl ether N.D. 2. ug/l 100 74-120 <br /> t-Amyl methyl ether N.D. 2. ug/l 98 77-118 <br /> t-Butyl alcohol N.D. 100. ug/1 101 58-147 <br /> 1,2-Dichloroethane N.D. 2. ug/l 102 84-131 <br /> 1,2-Dibromoethane N.D. 2. ug/l 103 84-119 <br /> Batch number: U013201AA Sample number(s) : 3728230,3728232--3728233,3728235-3728236 <br /> Ethanol N.D. 500. ug/l 107 70-130 <br /> Methyl t-butyl ether N.D. 2. ug/l 100 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 98 74-125 <br /> Ethyl t-butyl ether N.D. 2. ug/l 98 74-120 <br /> t-Amyl methyl ether N.D. 2. ug/l 93 77-116 <br /> - t-Butyl=alcohol N.D..100:. ug/1 101 - -58-1-4" <br /> 58-1-4:7 <br /> 1,2-Dichloroethane N.D. 2. ug/l 90 84-131 <br /> 1,2-Dibromoethane N.D. 2. ug/l 90 84-119 <br /> Batch number: U013201AB Sample number(s) : 3728231,3728234 <br /> Ethanol N.D. 500. ug/l 107 70-130 <br /> Methyl t-butyl ether N.D. 2. ug/l 100 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 98 74-125 <br /> Ethyl t-butyl ether N.D. 2. ug/1 98 74-120 <br /> t-Amyl methyl ether N.D. 2. ug/l 93 77-118 <br /> t-Butyl alcohol N.D. 100. ug/l 101 58-147 <br /> 1,2-Dichloroethane N.D. 2. ug/l 90 84-131 <br /> 1,2-Dibromoethane N.D. 2. ug/l 90 84--119 <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 013200016A Sample number(s) : 3728223-3728236 <br /> Methanol (by Direct Injection) 100 100 78-114 0 20 <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 /> Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 liev.9/11/00 <br />