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LancasterRe or# <br />Laboratories Analysis p <br />2425 New Holland Pike, PO Box 12425, Lancaster, PA 17605-2425 •717-656-2300 Fax: 717-656-2681 - www.lancasterlabs.com <br />Page I of 3 <br />Quality Control Summary <br />Client Name: ChevronTexaco Group Number: 856727 <br />Reported: 06/30/03 at 12:23 AM <br />Laboratory Compliance Quality Control <br />AnalYsie Name <br />Batch number: 0317SA16A <br />TPS-GRO - Waters <br />Batch number: 031770013A <br />Methanol (by Direct Injection) <br />Batch number: P0317BIAA <br />Ethanol <br />Methyl Tertiary 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 />Batch number: P0317B2AA <br />Ethanol <br />lethyl Tertiary 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 />nl sin Name <br />Batch number: 0317SA16A <br />TPH-GRO - Waters <br />Batch number: 031770013A <br />Methanol (by Direct Injection) <br />Batch number: P031781AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />di-Ieopropyl ether <br />Ethyl t -butyl ether <br />t -Amyl methyl ether <br />t -Butyl alcohol <br />Benzene <br />Blank <br />Blank <br />Report LCS <br />LCSD <br />LCS/LCSD <br />Result <br />MDL <br />Unita <br />%RRC <br />kR13C <br />Limits <br />Sample <br />number(s): <br />4069283-4069287 <br />95 <br />69-134 <br />1 30 <br />N.D. <br />50. <br />u9/1 <br />114 <br />110 <br />70-130 <br />Sample <br />number(s): <br />4069283-4069287 <br />96 <br />77-117 <br />N.D. <br />2D0. <br />ug/l <br />92 <br />2 30 <br />78-114 <br />Sample <br />number(s): <br />4069283 <br />N.D. <br />50. <br />ug/1 <br />105 <br />43-159 <br />N.D. <br />0.5 <br />ug/1 <br />94 <br />77-127 <br />N.D. <br />0.5 <br />ug/1 <br />96 <br />74-125 <br />N.D. <br />0.5 <br />ug/1 <br />96 <br />74-120 <br />N.D. <br />0.5 <br />ug/1 <br />95 <br />79-113 <br />N.D. <br />5. <br />ug/1 <br />97 <br />53-147 <br />N.D. <br />0.5 <br />ug/1 <br />96 <br />85-117 <br />N.D. <br />0.5 <br />ug/1 <br />95 <br />77-132 <br />N.D. <br />0.5 <br />ug/l <br />98 <br />85-115 <br />N.D. <br />0.5 <br />ug/l <br />95 <br />81-114 <br />N.D. <br />0.5 <br />ug/1 <br />94 <br />82-119 <br />N.D. <br />0.5 <br />ug/l <br />95 <br />84-120 <br />Sample <br />number(s): <br />4069284-4069287 <br />N.D. <br />50. <br />ug/1 <br />111 <br />43-159 <br />N.D. <br />0.5 <br />ug/1 <br />110 <br />77-127 <br />N.D. <br />0.5 <br />ug/1 <br />114 <br />74-125 <br />N.D. <br />0.5 <br />ug/1 <br />112 <br />74-120 <br />N.D. <br />0.5 <br />ug/1 <br />109 <br />79-113 <br />N.D. <br />5. <br />ug/1 <br />116 <br />53-147 <br />N.D. <br />0.5 <br />ug/1 <br />109 <br />85-117 <br />N.D. <br />0.5 <br />ug/1 <br />113 <br />77-132 <br />N.D. <br />0.5 <br />ug/l <br />103 <br />85-115 <br />N.D. <br />0.5 <br />ug/1 <br />101 <br />81-114 <br />N.D. <br />0.5 <br />ug/l <br />100 <br />82-119 <br />N.D. <br />0.5 <br />ug/l <br />103 <br />84-120 <br />Sample <br />Matrix <br />Quality <br />Control <br />MS <br />MSD M8/KSD <br />RPD <br />BEG <br />DUP <br />RSC <br />kREC Limits <br />RPD MAX <br />Conc <br />Cone <br />Sample number(s): 4069283-4069287 <br />122 70-130 <br />Sample <br />number(s): 4069263-4069287 <br />92 <br />88 <br />78-116 <br />4 20 <br />Sample <br />number(a): 4069283 <br />106 <br />111 <br />34-163 <br />5 30 <br />95 <br />95 <br />69-134 <br />1 30 <br />99 <br />100 <br />75-130 <br />1 30 <br />97 <br />98 <br />73-123 <br />0 30 <br />97 <br />96 <br />77-117 <br />1 30 <br />103 <br />104 <br />39-155 <br />2 30 <br />101 <br />102 <br />83-128 <br />1 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 />RPD RPD Max <br />3 <br />DUP <br />RPD <br />30 <br />Dup <br />RPD <br />Max <br />