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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2681•www.lancasterlabs.com <br /> Page 1 of 3 <br /> REPRINT <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 901070 <br /> Reported: 08/06/04 at 12:24 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted. In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unite REC RBC Limits RPD RPD Max <br /> Batch number: 041750026A Sample number(s) : 4298368-4298370 <br /> TPH - DRO CA LUFT (Waters) N.D. 50. ug/l 89 105 61-126 17 20 <br /> Batch number: 041750027A Sample number(s) : 4298368-4298370 <br /> Total TPH N.D. 80. ug/l 91 106 43-119 15 20 <br /> TPH Jet Fuel C9-C19 N.D. 80. ug/l <br /> TPH Motor Oil C16-C36 N.D. 40. ug/l <br /> Batch number: 04176A07C Sample number(s) : 4298368-4298370 <br /> TPH-GRO - Waters N.D. 50. ug/1 104 107 70-130 3 30 <br /> Batch number: P041831AA Sample number(s) : 4298369-4298370 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 96 77-127 <br /> Benzene N.D. 0.5 ug/l 100 85-117 <br /> Toluene N.D. 0.5 ug/l 98 85-115 <br /> Ethylbenzene N.D. 0.5 ug/l 98 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 98 84-120 <br /> Batch number: P041833AA Sample number(s) : 4298368 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 102 77-127 <br /> Benzene N.D. 0.5 ug/l 101 85-117 <br /> Toluene N.D. 0.5 ug/l 101 85-115 <br /> Ethylbenzene N.D. 0.5 ug/l 101 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 101 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name REC REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 04176A07C Sample number(s) : 4298368-4298370 <br /> TPH-GRO - Waters 103 63-154 <br /> Batch number: P041831AA Sample number(s) : 4298369-4298370 <br /> Methyl Tertiary Butyl Ether 104 104 69-134 0 30 <br /> Benzene 110 109 83-128 1 30 <br /> Toluene 109 108 83-127 1 30 <br /> Ethylbenzene 110 109 82-129 0 30 <br /> Xylene (Total) 110 109 82-130 1 30 <br /> Batch number: P041833AA Sample number(s) : 4298368 <br /> Methyl Tertiary Butyl Ether 106 102 69-134 3 30 <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 />