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i <br /> LancasterY <br /> Anal s;s Report <br /> Laboratories <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lanGastarlabs.eom <br /> Page 2 of 3 <br /> �1 <br /> Quality Control summary <br /> .Client; Name: Che'vronTexaco Group Number: 944319 <br /> Reported: 06/02/05 at 01:21 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BAG DQPDDP Dup RPD <br /> Anal ssio Name $REC %REC Limits RPD MAX Conc Conc RPD Max <br /> di-Isopropyl ether 97 99 75-130 1 30 <br /> Ethyl t-butyl ether 92 94 78-119 2 30 <br /> t-Amyl methyl ether 88 89 77-117 2 30 <br /> t-Butyl alcohol 90 89 51-147 1 30 <br /> Benzene 102 104 83-128 2 30 <br /> 1,2-Dichloroethane 99 99 73-136 0 30 <br /> Toluene 102 104 83-127 1 30 <br /> 1,2-Dibromoethane 93 94 78-120 1 30 <br /> Ethylbenzene 104 105 82-129 1 30 <br /> Xylene (Total) 101 103 82-130 2 30 <br /> Batch number: Z051491AA Sample number(s) : 4528544,4528547 <br /> Ethanol 104 105 26-153 1 30 <br /> Methyl Tertiary Butyl Ether 88 90 69-134 1 30 <br /> di-Isopropyl ether 90 92 75-130 2 30 <br /> Ethyl t-butyl ether 89 91 78-119 2 30 <br /> t-Amyl methyl ether 87 86 77-117 2 30 <br /> t-Butyl alcohol 87 89 51-147 2 30 <br /> Benzene 98 101 83-128 2 30 <br /> 1,2-Dichloroethane 99 101 73-136 2 30 <br /> Toluene 98 100 83-127 2 30 <br /> 1,2-Dibromoethane 91 92 78-120 1 30 <br /> Ethylbenzene 100 102 82-129 1 30 1 <br /> Xylene (Total) 100 101 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-GRO - Waters I <br /> Batch number: 0515OA09D <br /> Triflucrotoluene-F <br /> 4528544 94 <br /> 4528545 95 <br /> 4528546 101 <br /> 4528547 100 <br /> Blank 95 <br /> LCS 97 <br /> LCSD 102 <br /> MS 97 <br /> Limits: 70-142 <br /> Analysis Name: BTEX+5 Oxygenates+EDC+EDB+ETOH <br /> Batch number: Z051461AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-de 4-Bromofluorobenzene <br /> I <br /> 4528545 95 95 99 93 <br /> 4528546 95 94 99 93 1 <br /> Blank 94 94 98 93 <br /> LCS 94 95 99 95 <br /> MS 95 97 98 95 i <br /> MSD 94 95 98 95 <br /> I <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 /> { <br /> k <br /> _ k <br />