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'Ah • Report . <br /> Lancaster Laboratories _ Page 1 of 3 <br /> Where quaftrIs a science �1 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number- 813647 <br /> Reported 07/17/02 at 04 46 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Anal Bis NaHkO ResultDr II its %RRC AcRBC Limits RPD RPD Et<a� <br /> Batch number 021840003A Sample numbers) 3846502-3846506 <br /> Methanol (by Direct In)ection) N D 1000 ug/l 96 64-130 <br /> Batch number 02169A16A Sample number(s) 3846501-3846508 - <br /> TPH-GRO - Waters N D 50 ug/1 104 103 76-126 0 30 <br /> Batch number 021910008A Sample number(s) 3846507-3846508 <br /> Methanol (by Direct Injection) N D 1000 ug/l 100 64-130 <br /> Batch number P021862AB Sample number(s) 3846502-3846508 <br /> Ethanol N D 500 ug/1 102 43-159 <br /> Methyl t-butyl ether N D 2 ug/l 101 77-127 <br /> di-Isopropyl ether N D 2 ug/1 97 74-125 <br /> Ethyl t-butyl ether N.D 2 u9/1 93 74-120 <br /> t-Amyl methyl ether N D 2 ug/1 93 71-114 <br /> t-Butyl alcohol N D 100 ug/l 102 59-139 <br /> Benzene N D 5 ug/l 102 85-117 <br /> 1,2-Dichloroethane N D 2 ug/l 107 77-132 <br /> Toluene N D 5 ug/l 101 85-115 <br /> 1,2-Dibromoethane N D 2 ug/l 99 81-114 <br /> Ethylbenzene N D 5 ug/l 101 62-119 <br /> Xylene (Total) N D 5 ug/l 105 84-120 <br /> Batch number P021871AB Sample numbers) 3846501 <br /> Benzene N D 5 ug/l 102 85-117 . <br /> Toluene N D 5 ug/l 99 85-115 <br /> Ethylbenzene N D 5 ug/1 100 _ 82-119 <br /> Xylene (Total) N D 5 ug/l 103 84-120 <br /> Sample Matrix Quality Control <br /> MS MBD MS/MSD RPD BRG DUP DQP Dup <br /> RPD <br />— Anal sis Name -- RE —%REC—Limito -RPD—MAX=Conc--- Cone RPD Max <br /> -Batch_number _021840003A Sample number(s) _3846502-3846506 <br /> --- Methanol (by Direct Injection) �96- --IOD 58-137 �_4-- ---20 -- - ------ - - - - -- --- - ----- - --- <br /> Batch number 02189A16A Sample number(s) 3846501-3846508 <br /> TPH-GRO - Waters 105 74-132 <br /> Batch number 021910008A Sample number(s) 3846507-3846508 <br /> Methanol (by Direct Injection) 104 104 58-137 0 20 <br /> Batch number P021862AB Sample number(s) 3846502-3846508 <br /> Ethanol 100 102 70-130 2 30 <br /> Methyl t-butyl ether 99 97 69-134 1 30 <br /> di-Isopropyl ether 100 97 68-133 3 30 <br /> Ethyl t-butyl ether 96 94 73-123 2 30 <br /> t-Amyl methyl ether 96 94 69-118 2 30 <br /> t-Butyl alcohol 101 101 51-148 0 30 <br /> Benzene 108 106 78-134 2 30 <br /> 1,2-Dichloroethane 107 105 73-136 2 30 <br /> Toluene 106 104 83-127 2 30 <br /> 1,2-Dibromoethane 99 98 78-120 1 30 <br /> Ethylbenzene 106 104 82-134 1 30 <br /> Xylene (Total) 110 108 82-130 2 30 <br /> *-Outside of specification <br /> (1) The result for one or both deternunations was less than fire times the LOQ <br /> (2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 97605 2425 <br /> 717-656 2300 Fax 717 656 2681 2216 Rev 9111100 <br />