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• RO <br /> • • <br /> Lancaster Laboratories Pag e 1 of 3 <br /> Where quality is a science • <br /> Quality Control Summary <br /> Client Name Chevron Products Company Grotap Number 782468 <br /> Reported 10/29/01 at 10:37 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCs LCSD LCs/LCSD <br /> Analysis Name Result MDL Units 94REC %REC Limits RPD RPD Max <br /> I <br /> Batch number 01290A55 Sample number(s) 3708208-3708218 <br /> Benzene N D 0 5 ug/l 110 104 80-118 5 30 <br /> Toluene _ _ N D 0 5 y ug/l 116 11482-119 ' 2_ 30 <br /> _ _ <br /> Ethylbenzene N D 0 5 ugA 1f5 110 81-119 9 30 <br /> Total Xylenes N D 1 5 ug/l 113 107 82-120 5 30 <br /> Methyl tert-Butyl Ether N D 2 5 ug/l 94 94 79-127 0 30 <br /> TPH-GRO N California (waters) N D 50 ug/l 112 113 76-119 1 20 <br /> Batch number 012920016A Sample number(s) 3708216 <br /> Methanol (by Direct In3ection) N D 1000 ug/l 104 80-113 <br /> Batch number 012920017A Sample number(s) 3708217-3708218 <br /> Methanol (by Direct In3ection) N D 1000 ug/l 88 + 80-113 <br /> Batch number U012952AA Sample numbers) 3708213 <br /> Methyl t-butyl ether N D 2 ug/1 101 102 77--127 0 30 <br /> Batch number V012901AB Sample number(s) 3708216-3708218 <br /> Ethanol N D 500 ug/l 109 70-130 <br /> Methyl t-butyl ether N D 2 ug/l 88 77-127 <br /> di-Isopropyl ether N D 2 ug/l 94 74-125 • <br /> Ethyl t-butyl ether N D 2 ug/l 90 74-120 <br /> t--Amyl methyl ether N D 2 ug/l 94 77-118 <br /> t-Butyl alcohol N D 100 ug/l 114 58-147 <br /> 1,2-Dichloroethane N D 2 1.1g/1 104 84-131 <br /> 1,2-Dibromoethane N D 2 ug/1 102 84-119 <br /> Sample Matrix Quality_ Control _ <br /> Ms MSD MS/MSD RPD EKG DUP DUP DUP <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 012920016A Sample number(s) 3708216 <br /> Methanol (by Direct In3ection) 100 96 78-114 4 20 <br /> Batch number 012920017A Sample number(s) 3708217-3708218 <br /> Methanol (by Direct In3ection) 100 104 78-114 4 20 <br /> Batch number. U012952AA Sample number(s) 3708213 _ - <br /> Methyl t-butyl ether 104 69-134 <br /> Batch number. V012901AB Sample number(s) 3708216-3708218 <br /> Ethanol 112 113 70-130 1 30 <br /> Methyl t-butyl ether 87 87 69-134 0 30 <br /> chi-isopropyl et}ier - 94-- " 95- - 75-128---- -17--- —30--- - - <br /> Ethyl t-butyl ether 90 92 73-123 2 30 <br /> t-Amyl methyl ether 94 95 69-126 1 30 <br /> t-Butyl alcohol 117 114 50-157 2 30 <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 /> Lancaster Laboratories Inc <br /> B Ft 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 2216 Rev 9111100 <br />