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LancasterAnalysis Report • <br /> Laboratories Y <br /> 2425 New Holland Poke PO Boot 12425 Lancaster PA 17605-2425•717 656 2300 Fax 717 656-2681 www lancasterlabs coin <br /> Page i of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco c/o Cambria <br /> Group Number 952667 <br /> Reported 08/05/05 at 05 06 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted An 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 1DL Units NRBC %REC Llmitp- RPP RPD Max <br /> Batch number 05209AO7D Sample number(s) 4570350 <br /> TPH-GRO - Waters <br /> N D 50 ug/1 96 92 70-130 4 30 <br /> Batch number 05209AOBA Sample number(s) 4570348 <br /> TPH-GRO - Waters <br /> N D 50 ug/1 104 105 70-130 1 30 <br /> Batch number 05209AOBB Sample number(s) 4570347,4570349 <br /> TPH-GRO - Waters N D 50 ug/l 104 105 70-130 1 30 <br /> Batchnumber OOln}Action) N Dple number(s) <br /> 4570348-4570350 80-120 <br /> Met Y Direct <br /> Batch number Z052102AA Sample number s) 4570347-4570350 30-155 <br /> Ethanol N D 50 ug/l 97 77-127 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 88 67-130 <br /> di-Isopropyl ether N D 0 5 ug/1 97 74-120 <br /> Ethyl t-butyl ether N D 0 5 ug/l 90 79_113 <br /> t-Amyl methyl ether N D 0 5 ug/l 86 <br /> N D 5 ug/l 90 57-141 <br /> Balcohol N D 0 5 ug/l 96 85-117 <br /> Beennzzeneene chloroethane N D 0 5 ug/1 82 77-132 <br /> Toluene <br /> 85-115 <br /> Te N D 0 5 ug/1 97 81-114 <br /> 1 2-Dibromoethane N D 0 5 ug/l 93 82-119 <br /> Ethylbenxene N D 0 5 ug/1 94 <br /> Xylene (Total) <br /> N D 0 5 ug/l 94 83-113 <br /> Sample Matrix Quality Control <br /> MS <br /> MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Anal g Name %REC $RIC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 05209AO7D Sample numbers) 45 0350 <br /> TPH-GRD - Waters 108 <br /> Batch number 05209AO8A Sample numbers) 4S 0348 <br /> TPI-GRO - "aters 120 <br /> Batch number 05209A08H Sample number(s) 450347,4570349 <br /> TPH-GRO - Waters 120 <br /> Batch number 052140032A Sample number(s) 4570346-4570350 <br /> Methanol (by Direct Injection) 100 100 88-126 0 20 <br /> *-Outside of specification <br /> (l) 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 />