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f <br /> Lancaster, Analysis, Report <br /> Laboratories - <br /> 2425 _ Y <br /> New Holland Pike,PO Box 12425,Lancaster,'PA 17605-2425•717-656-2300 Fax:717.656-2681.www.lancasterlabS.cO.m .s <br /> Page 1 of 5 <br /> Quality Control Summary . r Y <br /> Group Number: 947957 <br /> Client Name: ChevronTexaco <br /> Reported: 06/29/05 at 10:16 PM u <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 <br /> 1-ML <br /> %REC %REC Limits RPA YtPD Max <br /> Batch number: 051720027A Sample number(s) : 4546312-4546321 80_120 <br /> Methanol (by Direct Injection) N.D. 1000. ug/1 104 <br /> Batch number: 05173A07A Sample number(s) : 45ug/12 102 96 70-130 7 30 <br /> TPH-GRO - WateYs N.D. 50. <br /> Batch number: 05173A07B Sample numb4546311,4546313-454631 0- 46 70- 130 7 30 <br /> TPH-GRO - Waters N D 50 50. ug/ <br /> Batch number: 05173A07C Sample number(s) :' 4546319-4546321 <br /> TPH-GRO - Waters N.D. 50. ug/l 102 96 70-130 7 30 . <br /> Batch number: Z051732AA Sample number(s) : 4546311 77-127 <br /> Methyl Tertiary Butyl Ether N"D. 25 ug/l 60 85-117 <br /> ug/1 88 <br /> Benzene N D' 85-115 <br /> Toluene N.D. 5 ug/L 90 82-119 <br /> Ethylbenzene N.D. .5 .ug/I 90 83-113 <br /> Xylene (Total) N.D. 5 ug/1 96 <br /> Batch number: Z051751AA Sample number(s) : 4546312-4546319 30-155 <br /> N..D. 500. ug/1 106 <br /> Ethanol 77-127 <br /> Methyl Tertiary Butyl Ether N.D, 2. ug/1 92 67-130 <br /> di-Isopropyl ether N.D" 2. ug/1 90 74-120 <br /> Ethyl t-butyl ether N.D. 2. ug/l 92 79-113 <br /> t-Amyl methyl ether N.D. 2. ug/l 99 <br /> N..D. 100. ug/1 93 57,-141 <br /> t-Butyl alcohol 85-117 <br /> Benzene N.D. 5 ug/1 92 77-132 <br /> 2 <br /> N.D. . ug/1 92 <br /> 1,2-Dichloroethane ug/1 95 85-115 <br /> Toluene N.D. .581-114 <br /> 1,2-Dibromoethane N.D. 2. ug/1 92 82-119 <br /> 1 95 <br /> Ethylbenzene N.D. .5 u ug/ 96 83-113 <br /> Xylene (Total) N.D. i <br /> Batch number: Z051754AA Sample number(s) : 4546320-4546321. 30-155 <br /> Ethanol N.D. 500. ug/l - 105 77-127 <br /> Methyl Tertiary Butyl Ether N.D. 2. ug/1 88 67-130 <br /> di-isopropyl ether N.D. 2. ug/1 88 74-120 <br /> Ethyl t-butyl ether N.D" 2. ug/1 90 797113 <br /> t-Amyl methyl ether N.D. 2. ug/1 89 57-141 <br /> t-Butyl alcohol N.D. 100' Ug/194 85-117 <br /> Benzene N D 5 ug/1l 92 77-132 <br /> 1,2-Dichloroethane N.D. 2. ug/1 91 B5-115 <br /> Toluene N.D. '5 ug/l 94 81-114 <br /> 1,2-Dibromoethane N.D. 2. ug/1 90 <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 /> I <br />