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LancasterAnalysis Report <br /> Laboratories <br /> 2425 Now Holland Pike PO Box 12425 Lancaster PA 17605-2425•717 65fi-2300 Fax 717-656-2661•www IancesterlabS com Page 3 of 6 <br /> Quality Control Summary <br /> Client Name ChevronTexaco <br /> Group Number 966868 <br /> Reported 11/29/05 at 01 12 PM <br /> Sample Matrix Quality Control <br /> DUP DDp Aup RPD <br /> NS MSD MS/MSD RPD BKG RPD Max <br /> Analysis Name %RRC %RBC Limits RFD MAIL Conc Conc <br /> 30 <br /> Toluene 106 106 83-127 0 2 30 <br /> 92 93 78-120 <br /> 1,2-Dibromoethane 30 1 30 <br /> Ethylbenzene 106 107 82-124 1 <br /> Xylene (Total) 107 107 82-130 <br /> Batch number Z053202AA Sample number s) 4644864 <br /> Methyl Tertiary Butyl Ether 9 69-134 2 30 <br /> 901 95 83-128 3 30 <br /> Benzene 105 102 83-127 3 30 <br /> Toluene 106 104 82-129 2 30 <br /> Ethylbenzene 106 104 132-130 2 30 <br /> Xylene {Total) <br /> Batch number Z053203AA sample number(s) 4644865 <br /> Ethanol 106 109 26-162 3 30 <br /> 69-134 0 30 <br /> Methyl Tertiary Butyl Ether 105 105 75-130 0 30 <br /> di-Isopropyl ether 30 <br /> Ethyl t-butyl ether 1D4 105 78-119 1 30 <br /> t-Amyl methyl ether 104 104 72-125 1 30 <br /> t-Butyl alcohol 97 101 56-134 4 30 <br /> ene 110 110 63-128 30 <br /> 105 104 70-143 1 <br /> ISDI.chloroethane 112 111 83-127 1 30 <br /> ene 97 98 78-120 0 30 <br /> 1,2-Dibromoethane 112 113 82-129 0 30 <br /> Ethylbenzene <br /> 112 112 82-130 1 30 <br /> Xylene (Total) <br /> Batch number Z053211AA Sample number(s) 4644866 30 <br /> Ethanol 107 104 26-162 2 30 <br /> Methyl Tertiary Butyl Ether 104 103 69-134 0 <br /> 104 75-130 0 30 <br /> di-Isopropyl ether 104 104 78-119 0 30 <br /> Ethyl t-butyl ether 104 103 72-125 1 30 <br /> t-Amyl methyl ether 97 96 56-134 2 30 <br /> t-Butyl alcohol 108 108 83-128 0 30 <br /> Benzene 102 103 70-143 0 30 <br /> 1,2-Dichloroethane 110 109 83-127 0 30 <br /> Toluene 96 96 78-120 0 30 <br /> 1,2-Dibromoethane 30 <br /> Ethylbenzene 112 110 82-129 2 30 <br /> Xylene (Total) 111 309 82-130 3 <br /> Surrogate Quality Control <br /> Analysis Name TPH Fuels by GC (Waters) <br /> Batch number 053150014A Orthoterphenyl <br /> Chlorobenzene <br /> 4644865 95 92 <br /> 4644866 117 90 <br /> 4644867 571* 81 <br /> Blank 82 85 <br /> 78 98 <br /> LCS 103 <br /> LCSA 84 <br /> *-Outside of specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br />