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LancasterAnalysis Report <br /> • Laboratories Y p <br /> 2425 New Ho4and Pike PO Box 12425 Lancaster PA 17605-2425•717 656-2300 Fax 717 656 2681•www IancasterlabS com <br /> Page 1 of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 894185 <br /> Reported 05/11/04 at: 11 18 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 to the <br /> method <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analygis blame Result NDL Units $REC %RSC Limits RPD RPA Max <br /> Hatch number 041210015A Sample number($) 4264509-4264516 <br /> TPH - DRQ CA LUFT (Waters) N D so ug/l 86 84 61-126 3 20 <br /> Batch number 04124112601A Sample number(s) 4264517 <br /> TRPH 418 1 1 2 0 40 mg/l 100 97 54-113 3 14 <br /> Batch number 04124AO7B Sample number(s) 4264509-4264510 <br /> TPH-GRO - Waters N D 50 ug/l 91 90 70-130 1 30 <br /> atch number 04124AO7C Sample number(s) 4264511-4264517 <br /> PH-GRO - Waters N D 50 ug/l 91 90 70-130 1 30 <br /> Batch number 04124A51A Sample number(s) 4264508 <br /> TPH-GRO - Waters N D 50 ug/1 89 92 70-130 3 30 <br /> Batch number 041250023A Sample number(s) 4264513-4264516 76-119 <br /> Methanol (by Direct Infection) N D 1000 ug/l 104 <br /> Batch number P041263AA Sample number($) 4264513-4264516 46-145 <br /> Ethanol N D 500 ug/l 93 <br /> Methyl Tertiary Butyl Ether N D 2 ug/1 96 77-127 <br /> di-Isopropyl ether N D 2 ug/l 89 67-130 <br /> Ethyl t-butyl ether N D 2 ug/l 89 74-120 <br /> t-Amyl methyl ether N D 2 u9/1 96 79-113 <br /> t-Butyl alcohol N D 100 ug/l 108 57-141 <br /> Benzene N D 5 ug/l 95 85-117 <br /> 1,2-Dichloroethane N D 2 ug/l 91 77-132 <br /> Toluene N D 5 ug/l 94 85-115 <br /> 1,2-Dibromoethane N D 2 ug/l 97 8 <br /> Ethylbenzene N D 5 ug/l 94 822-114-129 <br /> Xylene (Total) N D 5 ug/l 97 84-120 <br /> Batch number P041272AA Sample number(s) 4264508-4264512,4264517 77-127 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 100 85-117 <br /> Benzene N D 5 ug/1 lOD <br /> Toluene N D 5 ug/l 96 85-115 <br /> Bthylbenzene N D 5 ug/l 96 82-119 <br /> Xylene (Total) N D 5 ug/l 99 84-120 <br /> Sample Matrix Quality Control <br /> Nm MSD MS/MSD RPD BXG DUP DUP Dup RPD <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 />