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I # <br /> Lancaster Laboratories Page 1 of 4 <br /> Where quality is a science. <br /> IQuality Control Summary <br /> Client Name: Chevron Products Company Group Number: 807478 <br /> I Reported: 05/29/02 at 08:02 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units $RSC %REC Limits RPD RPD Max <br />' Batch number: 02135A55B Sample number(s) : 3819661-3819667 <br /> TPH-GRO - waters N.D. 50. ug/1 94 76-126 <br /> Batch number: 021370007A Sample number(s) : 3819661-3819663 <br /> Methanol (by Direct Injection) N.D. 200. ug/l 104 64-130 <br /> Batch number: 021410027A Sample number(s) : 3819664,3819666-3819667 <br /> Methanol (by Direct Injection) N.D. 200. ug/l 104 64-130 <br />' Batch number: U021361AA Sample number(s) : 3819661 <br /> Ethanal N.D. 50. ug/1 107 44-139 <br /> Methyl t-butyl ether N.D. .5 ug/l 100 77-127 <br /> di-Isopropyl ether N.D. -5 ug/l 98 74-125 <br /> Ethyl t-butyl ether N.D. .5 ug/1 99 74-120 <br />' t-Amyl methyl ether N.D. .5 ug/1 102 71-114 <br /> t-Butyl alcohol N.D. S. ug/1 94 59-139 <br /> Benzene N.D. .5 ug/1 102 84-120 <br /> 1,2-Dichloroethane N.D. -5 ug/l 103 77-132 <br /> Toluene N.D. .5 ug/1 102 86-123 <br /> t 1,2-Dibromoethane N.D. .5 ug/1 101 84-119 <br /> Ethylbenzene N.D- .5 ug/1 105 88-124 <br /> Xylene (Total) N.D. .5 ug/1 104 69-124 <br /> Batch number: U021361AB Sample number(s) : 3819662-3819663,3819665 <br /> 0ithanol N.D. 50. u9/1 107 44-139 <br /> thyl t-butyl ether N.D. .5 ug/1 100 77-127 <br /> -Isopropyl ether N.D. .5 ug/l 98 74-125 <br /> Ethyl t-butyl ether N.D. .5 ug/1 99 74-120 <br /> t-Amyl methyl ether N.D- .5 ug/1 102 71-114 <br />' t-Butyl alcohol N.D. 5. ug/1 94 59-139 <br /> Benzene N.D. .5 ug/1 102 84-120 <br /> 1,2-Dichloroethane N.D. .5 ug/1 103 77-132 <br /> Toluene N.D. .5 ug/1 102 86-123 <br /> 1,2-Dibromoethane N.D. .5 ug/1 101 84-119 <br /> Ethylbenzene N.D. .5 ug/1 105 88-124 <br />' Xylene (Total) N.D. .5 ug/1 104 89-124 <br /> Batch number: U021361AC Sample number(s) : 3819663-3819664,3819666-3819667 <br /> Ethanol N.D. 50. ug/1 107 44-139 <br /> Methyl t-butyl ether N.D. 5 1.19/1 100 77-127 <br /> di-Isopropyl ether N.D. .5 ug/1 98 74-125 <br /> Ethyl t-butyl ether N.D. .5 ug/l 99 74-120 <br /> t-Amyl methyl ether N.D. .5 ug/l 102 71-114 <br /> t-Butyl alcohol N.D. 5. ug/1 94 59-139 <br /> Benzene N.D. .5 ug/l 102 84-120 <br />' 1,2-Dichloroethane N.D. .5 ug/l 103 77-132 <br /> Toluene N.D. .5 ug/1 102 86-123 <br /> 1,2-Dibromoethane N.D. .5 ug/1 101 84-119 <br /> Ethylbenzene N.D. .5 ug/1 105 88-124 <br /> Xylene (Total) N.D. .5 ug/1 104 89-124 <br /> Sample Matrix Quality Control <br />' Rs MSD Ms/xsD RPD BK(; DUP DUP Dup <br /> RPD <br /> Analysis Name .94REC $REC Limits RPD MAX Conc Cone RPD M <br /> *-Outside of specification <br /> } The result for one or both determinations was less than five times the LOQ. <br /> } The background result was more than four times the spike added. <br /> Lancaster laboratories,Inc. <br /> MEMBER 2425 New Holland Pike <br />' PO Box 12425 <br /> C ■ Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 Rev.9/11/00 <br />