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Lancasteri Report <br /> Laboratories Analysis p <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-242 5•717 656-2300 Fax 717 656-268 1•www lancasterlabs com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 965271 <br /> Reported 11/09/05 at 01 51 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD EKG DUP DUP Dup RPD <br /> Anal�ls Name %AEC %RRC Limits RPD MAX Cone Conn RPD Max <br /> Batch number Z053091AA Sample numbers) 4635953-4635962 <br /> Ethanol 114 129 26-162 13 30 <br /> Methyl Tertiary Butyl Ether 107 107 69-134 0 30 <br /> di-Isopropyl ether 91 90 75-130 1 30 <br /> Ethyl t-butyl ether 94 94 78-119 1 30 <br /> t-Amyl methyl ether 97 96 72-125 1 30 <br /> t-Butyl alcohol 94 96 56-134 3 30 <br /> Benzene 98 97 83-128 1 30 <br /> Toluene 97 97 83-127 0 30 <br /> Ethylbenzene 98 99 82-129 1 30 <br /> Xylene (Total) 103 102 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Dame TPH-GRO - Waters <br /> Batch number 05304A07A <br /> Trifluorotoluene-F <br /> 4635952 89 <br /> 4635953 87 <br /> 4635954 103 <br /> 4635955 100 <br /> Blank 91 <br /> LCS 116 <br /> LCSD 117 <br /> MS 113 <br /> Limits 63-135 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 05304AOSA <br /> Trifluorotoluene-F <br /> 4635956 104 <br /> 4635957 108 <br /> 4635958 106 <br /> 4635959 105 <br /> 4635960 104 <br /> 4635961 104 <br /> 4635962 104 <br /> Blank 106 <br /> LCS 106 <br /> LCSD 108 <br /> MS 110 <br /> MSD 107 <br /> Limits 63-135 <br /> Analysis Name BTEX+MTBE by 8260B <br /> Batch number Z053052AA <br /> Dibromofluoromethane 1,2-Dlchlorcethane-d4 Toluene-d8 4-Bromofluorobenzene <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 />