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1 , <br /> Lancaster <br /> Laboratories Analysis Report ; <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 1 760 5-2 42 5•717.656-2300 Fax.717.656-2681•www.lancasterlabs.com I <br /> Pagel of 3 <br /> ' Quality Control Summary ' <br /> t <br /> Client .;Name: ChevronTexaco Group Number: 911494 <br /> Reported: 09/22/04 at 11:15 AM <br /> i <br /> Matrix QC may not be reported if site-specific QC samples were not j <br /> submitted. In these situations,to demonstrate precision and accuracy at <br /> a batch'leyel,a LCS/LCSD was performed,unless otherwise specified in the ; <br /> method. N <br /> ! Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result NIDL Units %REC $RSC Limits RPD RPD Max <br /> Batch number: 04257A16A Sample number(&) : 4349358-4349359 <br /> TPH-GRO :- Waters N.D. 50. ug/l 95 96 70-130 3 30 <br /> Batch number; 04257A16B Sample number(s) : 4349357 , <br /> TPH-GRO Waters N.D. 50. ug/1 95 98 70-130 3 30 <br /> Batch number: 0425BA16A Sample number(s) : 4349360 <br /> TPH-GRO - Waters N.D. 5o. ug/1 98 101 70-130 3 30 l <br /> F , <br /> Batch number: Z042603AA Sample number(s) : 4349357-4349360 , <br /> Ethanol N.D. 50. ug/l 79 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 93 77-127 <br /> di-Isopropyl ether N.D. 0.5 ug/l 94. 67-130 <br /> Ethyl t-butyl ether N.D. 0.5 ug/l 93 .74-120 <br /> .a. t-Amyl methyl ether N.D. 0.5 ug/l 97 79-113 'I <br /> t-Butyl alcohol N.D. 5. ug/l 92 57-141 <br /> Benzene ` N.D. 0.5 ug/1 91 85-117 { <br /> 1,2-Diohloroethane N.D. 0.5 ug/1 100 77-132 <br /> Toluene N.D. 0.5 ug/l 93 BS-115 <br /> 1,2-10ibromoethane N.D. 0.5 ug/l 96 81-114 <br /> 4` Ethylbenzene N.D. 0.5 ug/l 96 82-119 <br /> Xylene (Total} N.D. 0.5 ug/l 92 83-113 <br /> Sample Matrix Quality Control <br /> f! <br /> f MS MSD MS/MSD RPD BKG DUP DMP Dup RPD <br /> Analysis Name %RgC JRBC Limits RPD MAX Corea Conc APD Max <br /> Batch number: 04257A16A Sample number(&) ; 4349358-4349359 ! <br /> TPH-GRO - Waters 94 63-154 <br /> Batch number: 04257A16B Sample number(s) : 4349357 <br /> TPH-GRO - Waters 94 63-154 <br /> Batch number: 0425BA16A Sample numher(s) : 4349360 <br /> TPH-GRO .- Waters 93 63-154 <br /> Batch number: Z042603AA Sample number(s) : 4349357-4349360 <br /> Ethanol 86 115 33-153 29 30 <br /> Methyl Tertiary Butyl Ether 102 103 69-134 9 30 <br /> di-Isopropyl ether 100 101 75-130 1 30 <br /> Ethyl 't-butyl ether 100 102 78-119 2 30 <br /> Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. <br /> r� (2) The background result was more than four times the spike added. <br />