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Alalysis Report <br /> Lancaster <br /> Laboratories <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 846996 <br /> Reported: 04/03/03 at 05:05 PM <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 /> Benzene 112 113 83-128 0 30 <br /> 1,2-Dichloroethane 110 109 73-136 1 30 <br /> Toluene 104 105. 83-127 2 30 <br /> 1,2-Dibromoethane 95 99 78-120 4 30 <br /> Ethylbenzene 107 109 82-134 2 30 <br /> Xylene (Total) 110 111 82-130 1 30 <br /> Batchnumber: P030912AB Sample number(s) : 4021298 <br /> Ethanol 118 121 34-163 2 30 <br /> I <br /> Methyl Tertiary Butyl Ether 100 101 69-134 1 30 <br /> di-Isopropyl ether .113 114 75-130 l 30 <br /> Ethyl t-butyl ether 105 105 73-123 0 30 <br /> t-Amyl methyl ether 99 99 77-117 1 30 <br /> t-Butyl alcohol 106 110 39-155 4 30 <br /> Benzene 111 111 83-128 1 30 <br /> 1,2-Dichloroethane 107 107 73-136 1 30 <br /> Toluene 107 108 83-127 2 30 <br /> 1,2-Dibromoethane 99 97 78-120 2 30 <br /> Ethylbenzene 108. 108 82-134 0 30 <br /> Xylene (Total) 107 109 82-130 2 30 <br /> i <br /> I <br /> Surrogate Quality Control <br /> Analysis Name: Methanol and Ethanol <br /> Batch number: 030920025A <br /> Acetone <br /> 4021297 106 <br /> 4021298 105 <br /> Blank 105 <br /> LCS 104 <br /> MS 104 <br /> MSD 105 <br /> I <br /> Limits: 72-128 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 03092A07A <br /> Trifluorotoluene-F <br /> 4021297 86 <br /> 4021298 90 <br /> Blank 92 <br /> LCS 102 <br /> LCSD 124 <br /> MS 122 <br /> MSD 121 <br /> Limits: 57-146 <br /> Analysis Name: BTEX + Oxygenates by 8260B <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 <br />