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Lancaster ;� Anal sis Re' <br /> Laboratories s, Y , l � <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605-2425 717 656-2300 Fax 717 656-2681 Www IancaSterlaGS Coln <br /> Page 3 of 5 <br /> jl I <br /> Quality Control Summary, <br /> Client Name Chevron'Texaco Group Number 941828 <br /> Reported 05/13/05 at 10 55 AM ` <br /> "Sample Matrix Quality Control <br /> RPD, EKG a DDP DUP Dup RPD <br /> -MSD- MS/MSD .- - <br /> Analysis Name_ �, %REC %REC LaAX <br /> mits ' } RPD M ' Conc Conic RPD Max <br /> Xylene (Total) 102' 105 ', 82-130 3 30 " <br /> + t , <br /> Batch number Z051281AA Sample number(s) 4516327 <br /> Ethanol 97 94 a ,26-153 2 30, <br /> Methyl Tertz.ary Butyl Ether 98 1195 °69-134 2 30 <br /> di-Isopropyl ether 92 91 75-130 1 30 <br /> Ethyl t-butyl ether 93 93 '76-119 0 30 <br /> t-Amyl methyl ether 99 98 77-117 1 30 <br /> t-Butyl alcohol 103 103f ` 51-147 0 30 <br /> Benzene 103 103 83-128 ,o t 30 <br /> 1 <br /> 1,2-Dichloroethane 103 102 73-136 0 30 <br /> Toluene + , a r 113 112 83-127,' 1 30 ' <br /> 1,2-Dibromoethane 104 105 178-120 0 r 30 <br /> Ethylbenzene 112 111 ;82-129 0 30 I <br /> Xylene (Total) 116 115 82-130 1 30 <br /> Batch number Z051291AA Sample number(s) 4536329-4516330 <br /> Ethanol 105 104 26-1531, 2 30 <br /> Methyl Tertiary Butyl Ether 96 96 69-134 0 30 <br /> di-Isopropyl etherl 93 93 75-130 0 30 • <br /> Ethyl t-butyl ether , 11 93 94, 78-119 1 30 <br /> t-Amyl methyl ether - 98 96 1+77-117 0 1I 30 <br /> t-Butyl alcohol, 104 104 51-147 0 i 30 <br /> Benzene 107 106 83-128 2l 30 <br /> 1,2-Dichloroethane 106 107 73-136 0 30 x <br /> Toluene 117 117 4,'83-7,27 1 30 <br /> 1,2-Dibromoethane 105 105 78-120 0 30 <br /> Ethylbenzene -�- w, 1114 ` 115 82-129 1 30 <br /> Xylene (Total') -J 119 120— 82-130 - 1 - 30- <br /> s ! ' <br /> r <br /> Surrogate Quality Control <br /> Analysis Name TPH-DRO CALUFT(Waters) , <br /> Batch number 051240017A <br /> Orthoterphenyl <br /> 4516322 3.02 l <br /> 4516323 104 ' <br /> 4516324 103 <br /> 4516325 101 <br /> 4516326 102 <br /> 4516327 1104 <br /> 4516329 98 + , <br /> 4516330 100 + ' <br /> Blank 101 <br /> LCS 126 <br /> LCSD 124' <br /> Limits 52-134 <br /> Analysis Name Methanol and Ethanal <br /> Batch number 051310027A s <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 />