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jj�Lancaster Analysis Report <br /> Laboratories <br /> 2425 New Holland Pike PO Bax 12425 Lancaster PA 17605-2425 717 656 2300 war 717 656 2681 www Iancasterlabs com <br /> Page 3 of 5 <br /> Quality Control Summary <br /> Client Name Chevron Group Number 989164 <br /> Reported 05/25/06 at 02 46 PM <br /> Sample Matrix Quality Control. <br /> Unsprkeo (UNSpKI = the sample used in conDunction with the matrix spike <br /> Backarouna (BKG) = the sample used in con)unct.ien with the auplicate <br /> MS MOD MS/MSD APD BKd DUP DtIP DuP RPD <br /> Analysis Name %REC 6RSC Ligats RPD MAX Cone Coac RAb Max <br /> Ethanol 115 34-161 <br /> Methyl Tertiary BLtyl Ether 107 69-127 <br /> di-lscprcpyl ether 103 75-130 <br /> Ethyl t-butyl ether 101 78-119 <br /> t-Amyl methyl ether 101 72-125 <br /> t-Butyl alcohol 99 64-130 <br /> Benzene 106 83-126 ' <br /> 1,2-Dr chloroethane 103 70-143 <br /> Toluene 103 63-127 <br /> 1 2-Dibromoethane 99 78-120 <br /> Ethylbenzene 105 62-129 <br /> Xylene (Total) 103 82-130 <br /> Batch number Z062401AA Sample number{s} 4769393 UNSPK P769427 ' <br /> Ethanol 103 34-161 <br /> Methyl Tertiary Sutyl Ether 103 69-127 <br /> p;-Isopropyl ether 103 75-130 <br /> Ethyl t-butyl ether 99 78-119 <br /> t-Amyl methyl ether 97 72-125 I <br /> t-Butyl alcohol 94 64-130 <br /> Benzene 107 83-126 <br /> 1 2-Dichloroethane 102 70-143 <br /> Toluene 104 63-127 <br /> 1 2-Drbromoetnane 97 7E-120 ' <br /> Ethylbenzene 104 E2-129 <br /> Xylene (Total] 102 82-130 <br /> Surrogate Quality Control ' <br /> Surrogate recover.es which; are outside of tie QC wlnaow are contxrnea <br /> unless attr>buteo to d-lutxon or otherw,se notes on the Analysts Report <br /> Analys.s Name TPH-GRO - waters <br /> Batch number 0613IA16B <br /> 'rifluoretoluene-F <br /> 47693 00 86 <br /> °69391 EE <br /> 4769392 86 <br /> 476393 104 <br /> Blank 92 <br /> LCS 64 <br /> LCSD 88 <br /> MS 91 ' <br /> Limits E3-1s5 <br /> Analysts Name TPI, Fuel_ by GC (waters' <br /> Hatch rumber 0b1350067A <br /> Crlcronenzene ortrcterphenyl <br /> *-Outside of specification <br /> (1) 1 he result foi one or both determinations was less than five times the LOQ t <br /> (2) The bacl.ground result m as more than four times the spike added <br /> • <br /> 1 <br />