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Lancaster Analysis Report Laboratories Y • <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 176052425 717 656 2300 Fax 717-6562681 www tancasierlabs com <br /> Page 2 of 4 <br /> Quality-_ Control Summary <br /> - <br /> Client Name Chevron Group Number 976102 <br /> Reported 02/09/06 at 10 48 AM <br /> Sample Matrix Quality Control <br /> Unspiked (UNSFX) = the sample used in con}unction with the matrix spike <br /> Background (BKG) the sample used in conjunction with the duplicate <br /> Mg MSD MS/MSD RPD ERG DUP DUP Dup RPD <br /> Analysis Name $RBC $EEC Limits RPD KkX Conc Cone RPD Max <br /> x <br /> Batch number 06033001'7A Sample numbers) 4698484-4698487 UNSPK P697972 <br /> Methanol (by Direct ln7ect2on) 96 104 66-133 6 20 <br /> Batch number P060341AA Sample number(s) 4698484-4698487 UNSPK P698430 <br /> Ethanol 70 6E 26-162 4 30 <br /> Methyl Tertiary Butyl Ether 100 100 69-134 D 30 <br /> di-Isopropyl ether 86 87 75-130 1 30 <br /> Ethyl t-butyl ether 92 93 7E-119 1 30 M <br /> t-Amyl methyl ether 99 917 72-125 2 30 <br /> t-Butyl alcohol 95 96 56-134 1 30 <br /> Benzene 98 97 63-128 1 30 <br /> 1,2-Dichloroethane 98 9E 70-143 -- 0 30 <br /> Toluene 103 102 83-127 0 30 <br /> 1,2-Dzbromoethane 100 99 78-120 1 30 <br /> Ethylbenzene 106 105 82-129 1 30 <br /> Xylene (Total) 105 105 82-130 0 13o <br /> Batch number 2060372AA Sample number(s) 4698479-4698483 469848E UNSPK 4698480 . <br /> Methyl Tertiary Butyl Ether 315 111 69-127 1 30 r <br /> Benzene 111 111 83-128 0 30 <br /> Toluene 115 116 83-127 1 30 <br /> Ethylbenzene 117 21E 82-129 1 30 <br /> Xylene (Total) 118 117 E2-130 0 30 <br /> Surrogate Quality Control _ <br /> Surrogate recoveries which are outside of the QC window are confirmea <br /> unless attributed to dilution or otherwise noted on the Analysis Report <br /> Analysis Name TPH-DRO CALUFT(Waters) <br /> Batch number 060300003A <br /> Orthoterphenyl <br /> 4698480 90 <br /> 4698481 94 <br /> 4698482 91 <br /> 4698482 93 <br /> 4698484 90 <br /> 4696465 92 <br /> 4698486 92 <br /> 4698487 E9 <br /> Blank 9= <br /> LCF 10: <br /> LCSD 103 <br /> L1mI S 59-131 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 0603OA20A <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 snore than four times the spike added <br />