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Lancaster <br /> Laboratories analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancasler,PA 17605-2425•717-656 2300 Fax 717-656.2681•www lancaslerlabs Com • <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 872710 <br /> Reported 11/11/03 at 11 21 AM <br /> Sample Matrix Quality Control <br /> MS MSD DSS/MSD RPD BRG DUP DVP Dup <br /> RPD <br /> Analveis Name %RE AREC Limits RPD MAX Conc C.onc RPD D[ax <br /> Ethanol 72 81 38-149 11 30 <br /> Methyl Tertiary Butyl Ether _ 93 94 69-134 1 30 <br /> di-Isopropyl ether 92 91-- 75-130 1 30 - <br /> Ethyl t-butyl ether 90 90 78-119 0 30 <br /> t-Amyl methyl ether 94 94 77-117 1 30 <br /> t-Butyl alcohol 86 92 44-150 5 30 <br /> Benzene 99 99 83-128 0 30 <br /> 1,2-Dzchloroethane 92 92 73-136 0 30 <br /> Toluene 100 100 83-127 0 30 <br /> 1,2-Dibromoethane 94 94 78-120 0 30 <br /> Ethylbenzene 101 100 82-129 1 30 <br /> m+p-Xylene 103 101 82-130 2 30 <br /> o-Xylene 101 100 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GAO - Waters <br /> Batch number 03302A16A <br /> Trifluorotoluene-F <br /> 4153222 111 <br /> 4153223 110 <br /> 4153224 112 <br /> 4153225 110 <br /> Blank 110 <br /> LCS 112 <br /> LCSD 113 <br /> MS 113 <br /> Limits 57-14 6 <br /> Analysis Name Methanol and Ethanol <br /> Batch number 033070010A <br /> Acetone <br /> 4153223 108 <br /> 4153224 104 <br /> 4153225 107 <br /> Blank 106 <br /> LCS 104 <br /> MS 112 <br /> MSD 107 <br /> Limits 72-128 <br /> Analysis Name 8260 Master Scan ;water) <br /> Batch number N033081AC <br /> Dibromofluoromethane 1,2-Dxchloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> Blank 91 Be 94 93 <br /> LCS 93 90 88 94 <br /> MS 96 95 88 93 <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 />