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- nalysis Report <br /> Lancaster <br /> Laboratories <br /> Page 3 of 6 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 844064 <br /> Reported: 04/02/03 at 12 :56 PM <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 Conc Conc RPD Max <br /> Benzene 101 102 83-128 0 30 <br /> Toluene 106 107 83-127 1 30 <br /> Ethylbenzene 109 110 82-134 0 30 <br /> Xylene (Total) 102 102 82-130 0 30 <br /> Batch number: Q030711AC Sample number(s) : 4008127 <br /> Methyl Tertiary Butyl Ether 85 90 57-136 7 30 <br /> di-Isopropyl ether 85 86 55-132 1 30 <br /> Ethyl t-butyl ether 85 87 58-127 3 30 <br /> t-Amyl methyl ether 82 83 SB-126 1 30 <br /> t-Butyl alcohol 86 84 14-185 1 30 <br /> Benzene 89 91 52-141 3 30 <br /> Toluene 80 82 53-137 2 30 <br /> Ethylbenzene -90* -116* 50-136 17 30 <br /> Xylene (Total) (2) (2) 47-139 24 30 <br /> Batch number: Q030731AA Sample number(s) : 4008128-4008129 <br /> Methyl Tertiary Butyl Ether 86 89 57-136 4 30 <br /> di-Isopropyl ether 87 86 55-132 1 30 <br /> Ethyl t-butyl ether 83 84 58-127 2 30 <br /> t-Amyl methyl ether 82 83 58-126 2 30 <br /> t-Butyl alcohol 78 80 14-185 2 30 <br /> Benzene 85 74 52-141 9 30 <br /> Toluene 98 92 53-137 6 30 <br /> Ethylbenzene (2) (2) 50-136 6 30 <br /> Batch number: Q030731AB Sample number(s) : 4008128-4008129 <br /> Ethylbenzene (2) (2) 50-136 6 30 <br /> Xylene (Total) (2) (2) 47-139 3 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH - DRO CA LUFT (Soils) <br /> Batch number: 030690026A <br /> Orthoterphenyl <br /> 4008127 148* <br /> 4008128 96 <br /> 4008129 212* <br /> Blank 89 <br /> LCS 66 <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, 17605 2425 <br /> 717-fi56-230000 F.ix717-656268177Ir� R1n'71n7 <br />