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l <br /> Y <br /> Lancaster .i <br /> Laboratories Anal Report <br /> 2425 New Holland Pike,PO Bax 12425 Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterlabs.com II I <br /> Page 2 of 3 !!! <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 942567 <br /> Reported: 05/18/05 at 06:55 PM :f <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP ' DUP Dup RPD <br /> Analysis Name REC %REC Limits RPD MAX Conc Conc RPD .Max_ <br /> di-Isopropyl ether 94 94 75-130 1 30 <br /> Ethyl t-butyl ether 93 93 78-119 1 30 <br /> t-Amyl methyl ether 93 94 77-117 1 30 <br /> t-Butyl alcohol 89 89 51-147 0 30 <br /> Benzene 97 98 83-128 0 30 ` <br /> 1,2-Dichloroetharne 95 94 73-136 1 30 <br /> Toluene 104 102 83-127 1 30 <br /> 1,2-Dibromoethane 96 94 78-120 2 30 <br /> Ethylbenzene 102 102 82-129 0 30 <br /> Xylene (Total) 102 102 82-130 0 30 �I r <br /> Batch number: Z051331AA Sample number(s) : 4519846-4519848 p� <br /> Ethanol 0* 10* 26-153 200* 30 <br /> Methyl Tertiary Butyl Ether 93 94 69-134 2 30 <br /> di-Isopropyl ether 95 96 75-130 1 30 !f <br /> Ethyl t-butyl ether 94 96 78-119 2 30 t <br /> t-Amyl methyl ether 96 96 77-117 1 30 <br /> t-Butyl alcohol 47* 53 51-147 12 30 if <br /> Benzene 99 99 83-128 1 30 <br /> 1,2-Dichloroethane 92 93 73-136 1 30 <br /> Toluene 104 106 83-127 2 30 <br /> 1,2-Dibromoethane 98 94 78-120 4 30 <br /> Ethylbenzene 103 105 82-129 1 30 !i <br /> Xylene (Total) 104 104 82-130 0 30 f <br /> ij <br /> it <br /> Surrogate Quality Control <br /> Analysis Name: TPH-GRO - Waters f <br /> Batch number: 0513CA54A <br /> Triflucrotoluene-F <br /> 4519846 78 <br /> 4519647 77 <br /> 4519848 76 <br /> 4519849 78 <br /> Blank 81 i <br /> LCS 82 <br /> - LCSD 81 <br /> MS B2 P <br /> Limits: 70-142 <br /> .w <br /> Analysis Name: BTEX+5 Oxygenates+EDC+EDB+ETOH - <br /> Batch number: Z051321AA IIF <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-3romofluorobenzene <br /> 4519848 93 90 96 88 <br /> 4519849 94 91 96 87 <br /> Blank 92 94 97 89 <br /> LCS 94 94 97 94 <br /> MS 93 91 96 92 <br /> MSD 93 90 97 93 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. k <br /> (2) The background result was more than four times the spike added. <br /> { <br />