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Analysis • • <br /> Lancaster Laboratories <br /> y Where quality is a science. 0 <br /> Page 2 of 5 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 827932 <br /> Reported —11/05/_02=at_0,6,:_46_P-M <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BHG DUP DUP Dup <br /> RPD <br /> analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 02297A16A Sample number(s) : 3925153-3925168 <br /> TPH-GRO - Waters 125 74-132 <br /> Batch number: 023010003A Sample numberis) : 3925154-3925166 <br /> Methanol (by Direct Injection) 104 104 69-127 0 20 <br /> Batch number: 023010005A Sample number(s) : 3925167-3925168 <br /> Methanol (by Direct Injection) 92 85 69-127 9 20 <br /> Batch number: N023031AB Sample number(s) : 3925153-3925158 <br /> Ethanol 83 88 34-163 6 30 <br /> Methyl t-butyl ether 100 102 69-134 3 30 <br /> di-Isopropyl ether 94 96 68-133 2 30 <br /> Ethyl t-butyl ether 91 96 73-123 5 30 <br /> t-Amyl methyl ether 96 97 69-116 2 30 <br /> t-Butyl alcohol 99 100 51-148 0 30 <br /> Benzene 111 113 78-134 2 30 <br /> 3.,2-Dichloroethane 105 106 73-136 0 30 <br /> Toluene 111 113 83-127 1 30 <br /> 1,2-Dibromoethane 101 103 78-120 2 30 <br /> Ethylbenzene 111 114 82-134 2 30 <br /> Xylene (Total) 112 113 82-130 1 30 <br /> Batch number: N023041AA Sample number(s) : 3925159-3925168 <br /> Ethanol 88 92 34-163 4 30 <br /> Methyl t-butyl ether 99 100 69-134 1 30 <br /> di-Isopropyl ether 93 94 68-133 2 30 <br /> Ethyl t-butyl ether 87 89 73-123 3 30 <br /> t-Amyl methyl ether 93 94 69-118 1 30 <br /> t=Butyl--alcohol 96 100 53--148 4' 30 - <br /> Benzene 112 112 78-134 0 30 <br /> 1,2-Dichloroethane 104 104 73-136 0 30 <br /> Toluene 114 114 83-127 0 30 <br /> 1,2-Dibromoethane 101 103 76-120 2 30 <br /> Ethylbenzene 114 113 82-134 1 30 <br /> Xylene (Total) 113 113 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH Fuels by GC (Waters) <br /> Batch number: 022970012A <br /> Chlorobenzene Orthoterphenyl <br /> 3925154 77 85 <br /> 3925155 84 93 <br /> 3925156 78 95 <br /> 3925157 95 99 <br /> 3925158 73 87 <br /> 3925159 97 90 <br /> 3925160 105 85 <br /> 3925161 71 90 <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 /> MEMBER 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 Rev.9/11/00 <br />