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Lancaster Laboratories <br />MQuqdA#* aGt&two 1 Summary <br />Client Name: ChevronTexaco Group Number: 820956 <br />Reported: 09/11/02 at 06:20 PM <br />Laboratory Compliance Quality Control <br />Analysis Name <br />Batch number: 02246A56A <br />TPH-GRO - Waters <br />Hatch number: 022480008A <br />Methanol (by Direct Injection) <br />Batch number: N022471AA <br />Ethanol <br />Methyl t -butyl ether <br />di -isopropyl ether <br />Ethyl t -butyl ether <br />t -Amyl methyl ether <br />t -Butyl alcohol <br />Benzene <br />1,2-Dichloroethane <br />Toluene <br />1,2-Dibromoethane <br />Ethylbenzene <br />Xylene (Total) <br />• <br />Analysis Name <br />Batch number: 02246A56A <br />TPH-GRO - Waters <br />Batch number: 022480008A <br />Methanol (by Direct Injection) <br />Batch number: N022411AA <br />Ethanol <br />Methyl t -butyl ether <br />di -Isopropyl ether <br />Ethyl t -butyl ether <br />t -Amyl methyl ether <br />t -Butyl alcohol <br />Benzene <br />1,2-Dichloroethane <br />Toluene <br />1,2-Dibromoethane <br />Ethylbenzene <br />Xylene (Total) <br />Blank <br />Blank <br />Report <br />LCS <br />Result <br />MDL <br />Units <br />%REC <br />Sample <br />number(s): <br />3888953-3888958 <br />109 <br />N.D. <br />50. <br />ug/l <br />91 <br />Sample <br />number(s): <br />3888953-3888957 <br />30 <br />N -D. <br />200. <br />ug/l <br />89 <br />Sample <br />number(s): <br />3888953-3888957 <br />51-148 <br />N.D. <br />50. <br />ug/l <br />103 <br />N.D. <br />.5 <br />ug/l <br />100 <br />N.D. <br />.5 <br />u9/1 <br />110 <br />N.D. <br />.5 <br />ug/l <br />91 <br />N.D. <br />5 <br />ug/l <br />92 <br />N.D. <br />5. <br />ug/l <br />88 <br />N.D. <br />.5 <br />ug/l <br />103 <br />N.D. <br />.5 <br />ug/l <br />99 <br />N.D. <br />.5 <br />ug/1 <br />103 <br />N.D. <br />5 <br />u9/1 <br />94 <br />N.D. <br />5 <br />ug/1 <br />102 <br />N.D. <br />.5 <br />ug/l <br />103 <br />LCSD LCS/LCSD <br />%REC Limits <br />87 74-116 <br />64-130 <br />43-159 <br />77-127 <br />74-125 <br />74-120 <br />71-114 <br />59-139 <br />85-117 <br />77--132 <br />85--115 <br />81-114 <br />82-119 <br />84-120 <br />Sample Matrix Quality Control <br />Ms MSD MS/MSD RPD BKG DUP <br />%REC %REC Limits RPD MAX Conc Conc <br />Sample number(s): 3888953-3888958 <br />95 95 74-132 0 30 <br />Sample number(s): 3888953-3888957 <br />93 96 69-127 4 20 <br />Sample number(s): 3888953-3888957 <br />96 <br />101 <br />34-163 <br />5 <br />30 <br />90 <br />96 <br />69-134 <br />5 <br />30 <br />106 <br />109 <br />68-133 <br />4 <br />30 <br />90 <br />96 <br />73-123 <br />6 <br />30 <br />91 <br />96 <br />69-118 <br />5 <br />30 <br />94 <br />101 <br />51-148 <br />7 <br />30 <br />105 <br />108 <br />78-134 <br />3 <br />30 <br />99 <br />101 <br />73-136 <br />2 <br />30'' <br />106 <br />109 <br />83-127 <br />3 <br />30 <br />91 <br />95 <br />78-120 <br />5 <br />30 <br />105 <br />108 <br />82-134 <br />3 <br />30 <br />106 <br />109 <br />82-130 <br />3 <br />30 <br />*- Outside of specification <br />(1) 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 />M E M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, 00 17605-2425 Fax:77-6 <br />717-656-2300 Fax:717-656-2681 <br />Page 1 of 3 <br />RPD RPD Max <br />4 30 <br />DUP <br />RPD <br />Dup <br />RPD <br />2216 Rev.9/11/00 <br />