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LancasterReport <br /> Laboratories Q n a 1 ys�s p <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425•717-656-2300 Fax 717 656-2681•www lancasterlabs com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco c/o Cambria Group Number 965815 <br /> Reported 11/15/05 at 11 19 AM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name !RBc %RSC Limits RPD MAX Conc conc RPD Max <br /> Methanol (by Direct Infection) 104 100 66-133 3 20 <br /> Batch number ZOS3112AA Sample number(s) 4638650 <br /> Methyl Tertiary Butyl Ether 93 92 69-134 1 30 <br /> Benzene 91 92 83-128 0 30 <br /> Toluene 95 94 83-127 1 30 <br /> Ethylbenzene 92 92 82-129 0 30 <br /> Xylene (Total) 96 95 82-130 1 30 <br /> Batch number Z053113AA Sample number(5) 4638651-4638653 <br /> Ethanol 118 109 26-162 8 30 <br /> Methyl Tertiary Butyl Ether 102 102 69-134 0 30 <br /> di-Isopropyl ether 86 86 75-130 1 30 <br /> Ethyl t-butyl ether 90 89 78-119 1 30 <br /> t-Amyl methyl ether 95 94 72-125 0 30 <br /> t-Butyl alcohol 91 90 56-134 1 30 <br /> Benzene 98 97 83-128 1 30 <br /> 1,2-D3,chloroethane B2 81 70-143 1 30 <br /> Toluene 97 97 83-127 0 30 <br /> 1 2-Dibromoethane 90 91 78-120 1 30 <br /> lbenzene 97 97 82-129 1 30 <br /> e (Total) 103 103 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 05308A08A <br /> Trifluorotoluene-F <br /> 4638650 92 <br /> 4638651 96 <br /> 4638652 94 <br /> Blank B3 <br /> LCS 95 <br /> LCSD 102 <br /> MS 100 <br /> Limits 63-135 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 05308AGSB <br /> Trifluorotoluene-F <br /> 4638653 93 <br /> Blank 92 <br /> LCS 95 <br /> LCSD 102 <br /> MS 100 <br /> Limits 63-135 <br /> Analysis Name Methanol and Ethanol <br /> "-Outside of specification <br /> 1) The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br />