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0 <br /> Lancaster <br /> Laboratories Analysis Report <br /> I• <br /> 2425 New Holland Pike PO Bac 12425 Lancaster PA 17605-2425•717-656-2300 Fax 717-656.2681•www(ancasterlab5 Com <br /> Page 1 of 3 <br /> Quality Control. Summary <br /> Client Name ChevronTexaco c/o Cambria Group Number 940671 <br /> Reported 04/29/05 at 03 44 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 NDL Unita RBC %REC Limits RPD RPD Max <br /> Batch number 051150027A Sample number(s) 4509929-4509931 <br /> Methanol (by Direct Injection) N D 200 ug/l 96 80-120 <br /> Batch number OS117AOBB Sample number(s) 4509928 <br /> TPH-GRO - Waters N D 50 u9/1 110 108 70-130 2 30 <br /> Batch number 05117AO8C Sample number(s) 4509929-4509931 <br /> TPH-GRO - Waters N D 50 ug/l 110 108 70-130 2 30 <br /> Batch number Z051162AA Sample number(s) 4509928 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 97 77-127 <br /> Benzene N D 0 5 ug/l 96 85-117 0 <br /> Toluene N D 0 5 ug/l 95 85-115 <br /> Ethylbenzene N D 0 5 u9/1 93 82-119 <br /> Xylene (Total) N D 0 5 ug/l 96 83-113 <br /> Batch number Z051171AA Sample number(s) 4509929-4509931 <br /> Ethanol N D 50 ug/l 93 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 90 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 90 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 88 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 89 79-113 <br /> t-Butyl alcohol N D 5 ug/l 99 57-141 <br /> Benzene N D 0 5 ug/l 91 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 100 77-132 <br /> Toluene N D 0 5 ug/l 97 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 92 81-114 <br /> Ethylbenzene N D 0 5 ug/l 97 82-119 <br /> Xylene (Total) N D 0 5 ug/l 99 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRG DUP DUP Dup RPD <br /> Analysis Name 94REC $REC Limits RPD MAX Cone Conc RPD Max <br /> Batch number 051150027A Sample number(s) 4509929-4509931 <br /> Methanol {by Direct Injection) 104 100 88-126 4 20 <br /> Batch number 05117A08B Sample number(s) 4509928 <br /> TPH-GRO - Waters 133 63-154 <br /> Batch number 05117AGBC Sample number s) 4509929-4509931 <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 />