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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Laruasler PA 17605_2425 717-656-2300 Fax 717 656-2681-W ww lancasterlabs con <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 917507 <br /> Reported 11/02/04 at 03 43 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 /> i <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 LCB LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limsts RPD RPA Max <br /> Batch number 04299AOBD Sample number(s) 4385216 <br /> TPH-GRO - Waters N D 5o ug/l 86 81 70-130 6 30 <br /> Batch number 04299AOBE Sample number(s) 4385217 <br /> TPH-GRO - Waters N D 50 ug/l 86 81 70-130 6 30 <br /> Batch number 043000010A Sample number(S) 4385217-4385219 <br /> Methanol (by Direct In3ectxon) N D 1000 u9/1 112 76-119 <br /> IOBatch number 0430OA07A Sample number(s) 4385218 <br /> TPH-GRO - Waters N D 50 ug/1 101 99 70 130 2 30 <br /> Batch number 0430OA07B Sample number(s) 4385219 <br /> i <br /> TPH-GRO - Waters N D 50 ug/l 101 99 70 130 2 30 <br /> Batch number Z043032AA Sample number(S) 4385216-4385219 <br /> Ethanol N D 500 ug/l 92 4E 145 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 90 71 127 <br /> di-Isopropyl ether N D 2 ug/l 90 67 130 <br /> Ethyl t-butyl ether N D 2 ug/l 90 74 120 <br /> t-Amyl methyl ether N D 2 ug/l 89 7�-113 <br /> t-Butyl alcohol N D 100 ug/l 77 57-141 <br /> Benzene N D 5 ug/l 90 85-117 <br /> 1 2-Dichloroethane N D 2 ug/l 92 77 132 <br /> Toluene N D 5 ug/l 93 85 115 <br /> 1 2-Dibromoethane N D 2 ug/l 91 81-114 <br /> Ethylbenzene N D 5 u9/1 94 82-119 <br /> Xylene (Total) N D 5 ug/l 93 8-- 113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dup RPD <br /> Anal�.Nanre %REC %AEC Lanita RPD MAX Conc Conc RPD Max— <br /> Batch number 04299AOBD Sample number(s) 4385216 <br /> TPh-GRO - Waters 118 63-154 <br /> Batch number 04299AOBE Sample number(s) 4385217 <br /> TPH-GRO - Waters 118 63-154 <br /> Batch number 043000010A Sample numbers) 4385217-4385219 <br /> Methanol (by Direct In3ectaon) 116 11E 68 130 0 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 />