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Lancaster <br /> Laboratories Analysis Report <br /> P425 New Holland Pika PO Box 12425 Lancaster PA 17605-2425•717 656-2300 Fax 717 656-2681•Www lanCaSterlabs com <br /> Page 1 of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 94611.0 <br /> Reported 06/29/05 at 11 08 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 /> Raa2ysfe Name eau t M-b Units %RSC %RBC L1ffilt8 RFD RPD Max <br /> Batch number 051720019A Sample number(s) 4547134-4547144 <br /> TPH - DRO CA LUFT (Waters) N D 50 ug/1 89 88 64-125 1 20 <br /> Batch number 051720020A Sample number(s) 4547134-4547144 <br /> Total TPH N D 40 ug/1 84 84 57-115 1 20 <br /> TPH Motor Oil C16-C36 N D 40 ug/1 <br /> 0 ch number 051720028A Sample number(s) 4547134-4547144 <br /> hanol (by Da.rect .infection) N D 200 ug/l 104 80-120 <br /> Batch number 05173A51A Sample number(s) 4547133-4547144 <br /> TPH-GRO - Waters N D 50 ug/1 98 100 70-130 3 30 <br /> Batch number 2051753AA Sample number(s) 4547134-4547144 <br /> Ethanol N D 50 ug/1 97 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 90 77-127 <br /> ds-isopropyl ether N D 0 5 ug/1 Be 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/1 90 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/1 91 79-113 <br /> t-Butyl alcohol N D 5 ug/1 92 57-141 <br /> Benzene N D 0 5 u9/1 90 85-117 <br /> 1,2-Dichleroethane N D 0 5 u9/1 93 77-132 <br /> Toluene N D 0 5 ug/l 92 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/1 91 81-114 <br /> Ethylbenzene N D 0 5 ug/1 93 82-119 <br /> Xylene (Total) N D 0 5 ug/l 94 83-113 <br /> Batch number Z051782AA Sample number(s) 4547133 <br /> Methyl Tertiary Sutyl Ether N D 0 5 us/1 93 77-127 <br /> Benzene N D 0 5 ug/1 91 85-117 <br /> Toluene N D 0 5 ug/l 92 85-115 <br /> Ethylbenzene N D 0 5 ug/l 92 82-119 <br /> Xylene (Total) N D 0 5 u9/1 92 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> AnalVBIS Name %IZEC %RBC Limits RPD MA Pon C Coil RPD K441— <br /> Batch number 051720028A Sample number(s) 4547134-4547154 <br /> Methanol (by Direct Tn}ection) 108 104 68-126 4 20 <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 />