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Lancaster <br /> �4 <br /> Laboratories n a 1 ys►s Report <br /> New Holland Pike PO Box 12425 Lancaster,PA 17605-2425•717-656-2300 Fax 717 656-2681•www lancasterlabs Com <br /> Page 1 of 2 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 849375 <br /> Reported 05/02/03 at 12 55 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LC8/LCSD <br /> Analysis Name Result MDL units %REC %REC Limits RPD RPD Max <br /> Batch number 031140019A Sample number(s) 4032268-4032270 <br /> Methanol (by Direct In3ection) N D 200 ug/1 96 78-114 <br /> Batch number 03114A07C Sample number(s) 4032267-4032270 <br /> TPH-GRO - Waters N D 50 ug/1 112 70-130 <br /> Batch number P031182AA Sample number(s) 4032267-4032270 <br /> Ethanol N D 50 ug/l 105 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/1 94 77-127 <br /> da-Isopropyl ether N D 5 ug/l 93 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 94 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 101 79-113 <br /> t-Butyl alcohol N D 5 ug/l 97 53-147 <br /> Benzene N D 5 ug/1 100 85-117 <br /> Toluene N D 5 ug/1 100 85-115 <br /> Ethylbenzene N D 5 ug/l 97 82-119 <br /> Xylene (Total) N D 5 ug/1 97 84-120 <br /> Sample Matrix Quality Control <br /> I6 MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name $AEC %REC Limits RPD MAX Cone Conc RPD Max <br /> Batch number 031140019A Sample number(s) 4032268-4032270 <br /> Methanol (by Direct Infection) 92 92 78-116 0 20 <br /> Batch number 03114A07C Sample number(s) 4032267-4032270 <br /> TPH-GRO - Waters 101 98 70-130 2 30 <br /> Batch number P031182AA Sample number(s) 4032267-4032270 <br /> Ethanol 102 123 34-163 18 30 <br /> Methyl Tertiary Butyl Ether 96 99 69-134 4 30 <br /> di-Isopropyl ether 95 97 75-130 2 30 <br /> Ethyl t-butyl ether 95 97 73-123 2 30 <br /> t-Amyl methyl ether 99 100 77-117 1 30 <br /> t-Butyl alcohol 97 105 39-155 8 30 <br /> Benzene 104 106 83-128 2 30 <br /> Toluene 104 104 83-127 1 30 <br /> Ethylbenzene 103 102 82-134 1 30 <br /> Xylene (Total) 104 102 82-130 2 30 <br /> Surrogate Quality Control <br /> Analysis Name Methanol and Ethanol <br /> Batch number 031140019A <br /> Acetone <br /> 4032268 99 <br /> 4032269 97 <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 />