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alysis Report <br /> Lancaster <br /> Laboratories <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 846996 <br /> Reported: 04/03/03 at 05:05 PM <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: 030920025A Sample number(s) : 4021297-4021298 <br /> Methanol (by Direct Injection) N.D. 200. ug/l 96 78-114 <br /> Batch number: 03092A07A Sample number(s) : 4021297-4021298 <br /> TPH-GRO - Waters N.D. 50. ug/l 107 110 70-130 3 30 <br /> Batch number: P030911AB Sample number(s) : 4021297 <br /> Ethanol N.D. 50. ug/l 102 43-159 <br /> Methyl Tertiary Butyl Ether N.D. .5 ug/l 100 77-127 <br /> di-Isopropyl ether N.D. .5 ug/l 111 74-125 <br /> Ethyl t-butyl ether N-D. .5 ug/l 105 74-120 <br /> t-Amyl methyl ether N.D. .5 ug/l 101 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 96 53-147 <br /> Benzene N.D. .5 ug/l 107 85-117 <br /> 1,2-Dichloroethane N.D. .5 ug/l 105 77-132 <br /> Toluene I N.D. .5 ug/l 97 85-115 <br /> 1,2-Dibromoethane N.D. .5 ug/l 96 81-114 <br /> Ethylbenzene N.D. .5 ug/l 100 82-119 <br /> Xylene (Total) N.D. .5 ug/l 103 84-120 <br /> Batch number: P030912AB Sample number(s) : 4021298 <br /> Ethanol N.D. 50. ug/l 103 43-159 <br /> Methyl Tertiary Butyl Ether N.D. .5 ug/l - 98 77-127 <br /> di-Isopropyl ether N.D. .5 ug/l 108 74-125 <br /> Ethyl t-butyl ether N.D. 5 ug/l. 103 74-120 <br /> t-Amyl methyl ether N.D. 5 ug/l 97 79-113 <br /> t-Butyl alcohol N.D. 5. ug/l 100 53-147 <br /> Benzene N.D. .5 ug/l 104 85-117 <br /> 1,2-Dichloroethane N.D. .5 ug/l 104 77-132 <br /> Toluene N.D. .5 ug/l 102 85-115 <br /> 1,2-Dibromoethane N.D. .5 ug/l 96 81-114 <br /> Ethylbenzene N.D. .5 ug/l 102 82-119 <br /> Xylene (Total) N.D. .5 ug/1103 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Cond Conc RPD Max <br /> Batch number: 030920025A Sample number(s) : 4021297_4021298 <br /> .Methanol (by Direct Injection) 104 100 78-116 4 20 <br /> Batch number: 03092A07A Sample number(s) : 4021297-4021298 <br /> TPH-GRO - Waters 109 113 70-130 3 30 <br /> Batch number: P030911AB Sample number(s) : 4021297 <br /> Ethanol 115 116 34-163 1 3.0 <br /> Methyl Tertiary Butyl Ether 102 102 69-134 0 30 <br /> di-Isopropyl ether 115 114 75-130 1 30 <br /> Ethyl t-butyl ether 107 107 73-123 0 30 <br /> t-Amyl methyl ether 102 101 77-117 1 30 <br /> t-Butyl alcohol 107 106 39-155 1 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 /> Lancaster Laboratories,Inc. <br /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster,017605-2425 <br /> 717-FSF_73l10 Fa x:717-556-75Rl <br /> Q j <br />