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Lancaster. Re or# <br /> Laboratories Analysis P <br /> 2425 Now Holland Plica po SM 12425,Lancaslar,PA 176052425-717-656-2300 Fax 717-65G-2651 YWWASr1089terl11b&C0m <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco c/o Cambria Group Number 96581.5 <br /> Reported: 11/15/05 at 11 19 AM <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 LCOD LCS/IresD <br /> Analysis Name B20111t MID16 ¢pits -%REC %RBC &LIAL&A APD Max <br /> Batch number 0530BA0SA Sample number(a) 4638650-4638652 <br /> TPH-GRO - Waters N D 50 u9/1 114 114 70-130 1 30 <br /> Batch number 0530BA08B sample number(a) 4636653 <br /> TPH-GRD - Waters N D 50 ug/l 114 114 70-130 1 30 <br /> Batch number 053130003A Sample number(a) 4638651-4638653 <br /> W.ethanol (by Direct Injection) N D 200 ug/l 100 80-120 <br /> teh number Z053112AA Sample number(a) 4638650 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l e9 77-127 <br /> Benzene N D 0 5 ug/l 85 85-117 <br /> Toluene N D 0 5 ug/1 87 85-x15 <br /> Ethylbenzene N D 0 5 ug/l as 82-119 <br /> Xylene (Total) N D 0 5 ug/l 90 83-113 <br /> Batch number 1053113AA Sample number(s) 4638651-4638653 <br /> Ethanol N D 50 ug/l 108 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 99 77-127 <br /> di-isopropyl ether N D 0 5 ug/l 81 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 85 74-120 <br /> t-Amyl methyl ether N D 0 5 u9/1 90 79-113 <br /> t-Butyl alcohol N D 5 ug/l 92 60-133 <br /> Benzene N D 0 5 ug/l 89 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 78 77-132 <br /> Toluene N D 0 5 ug/l 68 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l e6 81-114 <br /> Ethylbenzene N D 0 5 ug/i Be 82-119 <br /> Xylene (Total) N D 0 5 ug/l 95 83-113 <br /> Sample Matrix Quality Control <br /> Ms HHD Ns/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis-Name J&jcC &PC Limits RPS MAX Cone Conc Max <br /> Batch number OS30SAOSA Sample number(8) 4538650-4638652 <br /> TPH-GRO - Waters 115 63-154 <br /> Batch number 0530SA08B Sample number s) 4638653 <br /> TPH-GRO - Waters 115 63-154 <br /> Batch number 053130003A Sample numbers) 4638651-4638653 <br /> *-Outside of specification <br /> (1) The result for one or both deterrmnattons was less than five times the LOQ <br /> J&2) The background result was more than four times the spike added <br />