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4V 4 Il <br /> 1 i <br /> Lancaster - orf <br /> Laboratories A n a lys►s Rep <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 1760&2425•717 856 2300 Fax 717 656-2681•www lancasterlabs com <br /> Page 2 of 4 <br /> REVISED <br /> Quality Control Summary <br /> Client: Name chevronTexaco Group Number 953426 <br /> Reported 09/27/05 at 02 12 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %RBC RBC Limits RPD RPD Max <br /> Ethylbenzene N D j-5 ug/1 93 82-119 <br /> Xylene (Total) N D 0 5 ug/l 95 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %RBC %REg Limits RPD MAX Conc ronc RPD Max <br /> Batch number 05214A16A Sample number(s) 4573963-4573972 <br /> TPH-GRO - Waters 113 63-154 <br /> Batch number 052160034A Sample numbers) 4573968-4573971 <br /> Methanol (by Direct In3ectaon) 96 96 88-126 0 20 <br /> Batch number W052161AB Sample number(s) 4573963-4573966 <br /> Methyl Tertiary Butyl Ether 105 103 69-134 2 30 <br /> Benzene 102 101 83-128 1 30 <br /> Toluene 99 98 83-127 2 30 <br /> � <br /> hylbenzene 107 104 82-129 3 30 <br /> lene (Total) 98 96 82-130 3 30 <br /> Batch number W052172AA Sample number(s) 4573967 <br /> 'Methyl Tertiary Butyl Ether 93 94 69-134 0 30 <br /> 1}enzene 96 95 63-128 1 30 <br /> Toluene 101 100 83-127 0 30 <br /> Ethylbenzene 104 104 82-129 0 30 <br /> Xylene (Total) 104 104 82-130 0 30 <br /> Batch number Z052181AA Sample number(s) 4573968-4573971 <br /> Ethanol 99 106 26-153 6 30 <br /> Methyl Tertiary Butyl Ether 93 91 69-134 2 30 <br /> di-Isopropyl ether 94 92 75-130 2 30 <br /> Ethyl t-butyl ether 93 91 78-119 2 30 <br /> t-Amyl methyl ether 91 68 77-117 4 30 <br /> t-Butyl alcohol 102 95 51-147 7 30 <br /> Benzene 101 99 83-128 2 30 <br /> 1,2-Dichloroethane 97 94 73-136 2 30 <br /> Toluene 100 98 83-127 2 30 <br /> 1,2-Dibromoethane 94 92 78-120 2 30 <br /> Ethylbenzene 101 100 82-129 1 30 <br /> Xylene (Total) 102 100 82-130 2 30 <br /> Batch number Z052182AA Sample number4s) 4573972 <br /> Methyl Tertiary Butyl Ether 95 93 69-134 2 30 <br /> Benzene 104 104 83-128 1 30 <br /> Toluene 103 101 83-127 2 30 <br /> Ethylbenzene 111 115 82-129 2 30 <br /> Xylene (Total) 111 114 82-130 2 30 <br /> Surrogate Quality Control <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 />