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Lancaster <br /> Laboratories Analys>i►s Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425 1717-656-2300 Fax:717-656.2681•www.lancasterlabs.com , <br /> Page 2 of 3 171 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 919396 r <br /> Reported: 11/16/04 at 01:04 PM <br /> Sample Matrix Quality Control :I�# <br /> M9 MSD MS/MSD RPD BXG' DUP DUP Dup RPD <br /> Analysis Name RBC %REC Limits RPD MAX Cone Conc RPD Max -� <br /> 1,2-Dichloroethane 117 116 73-136 1 30 <br /> Toluene 108 108 83-127 0 30 <br /> 12-Dibromoethane 104 104 78-120 0 30 <br /> Lhylbenzene 111 110 82-129 1 30 <br /> Xylene (Total) 107 107 82-130 0 30 <br /> Batch number: Z043191AA Sample number(s) : 4396859 <br /> Methyl Tertiary Butyl Ether 96 103 69-134 6 30 <br /> Surrogate Quality Control � <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 0431OA16A <br /> Trifluorotoluene-F i <br /> 4396859 111 <br /> 4396860 112 <br /> 4396861 111 <br /> Blank 110 <br /> LCS 113 <br /> LCSD 116 <br /> MS 113 <br /> Limits: 57-146 ` r <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 04313A16A <br /> Trifluorotoluene-F <br /> 4396862 112 <br /> Blank 109 <br /> LCS 112 <br /> LCSD 111 <br /> MS 122 . <br /> MSD 117 <br /> Limits: 57-146 <br /> Analysis Name: BTEX+5 Oxygenates+EDC+EDB+ETON <br /> Batch number: Z043172AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene li�]SI <br /> 4396859 100 99 98 95 <br /> 4396860 100 97 96 95 <br /> 4396861 99 98 96 95 <br /> 4396862 99 98 9B 95 <br /> Blank 97 98 98 98 <br /> LCS 98 99 97 96 <br /> MS 99 100 98 100 <br /> MSD 100 99 96 101 <br /> Limits: 81-120 82-112 85-112 83-113 <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 /> f� <br /> _ r <br />