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C) <br />Lancaster <br />Laboratories <br />Quality Control Summary <br />Client Name: ChevronTexaco <br />Sample <br />number(s): 4051053-4051057 <br />TPH-GRO - Waters <br />113 <br />Reported: 66/05/03 at 11:38 <br />AM <br />Batch number: 031500002A <br />Group <br />Number: <br />853249 <br />Laboratory Compliance Quality <br />Control <br />Analysis Name <br />Blank <br />Result <br />Blank <br />Report <br />LCS <br />LCSD <br />LCS/LCSD <br />4051053-4051057 <br />MDL <br />Unita <br />$REC <br />%REC <br />Limits <br />Batch number: 03148A56A <br />Sample <br />number(s): <br />4051053-4051057 <br />69-134 <br />2 <br />TPH-GRO - Waters <br />N.D. <br />50. <br />ug/1 <br />97 <br />97 <br />70-130 <br />Batch number: D31500002A <br />Sample <br />number(s): <br />4051053-4051057 <br />2 <br />30 <br />Methanol (by Direct Injection) <br />N.D. <br />200. <br />ug/l <br />96 <br />30 <br />t -Butyl alcohol <br />86 <br />90 <br />39-155 <br />4 <br />30 <br />Benzene <br />78-114 <br />Batch number: W031501AA <br />Ethanol <br />Sample <br />number(s): <br />4051053-4051057 <br />1,2-Dichloroethane <br />97 <br />•43-159 <br />Methyl Tertiary Butyl Ether <br />N -D. <br />N.D. <br />50, <br />0.5 <br />ug/l <br />ug/l <br />116 <br />96 <br />96 <br />83-127 <br />di -Isopropyl ether <br />N.D. <br />0.5 <br />ug/l <br />103 <br />78-120 <br />77-127 <br />Ethyl t -butyl ether <br />N.D- <br />0.5 <br />ug/l <br />96 <br />3 <br />74-125 <br />t -Amyl methyl ether <br />N.D. <br />0.5 <br />ug/l <br />94 <br />30 <br />74-120 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/l <br />89 <br />79-113 <br />Benzene <br />1,2-Dichloroethane <br />N.D. <br />0.5 <br />ug/l <br />99 <br />53-147 <br />85-117 <br />Toluene <br />N -D. <br />N.D- <br />0-5 <br />0.5 <br />ug/l <br />ug/l <br />96 <br />90 <br />77-132 <br />1,2-Dibromoethane <br />N -D. <br />0.5 <br />ug/l <br />90 <br />85-115 <br />Ethylbenzene <br />N.D. <br />0.5 <br />ug/l <br />89 <br />81-114 <br />Xylene (Total) <br />N.D- <br />0.5 <br />82-119 <br />u9/1 <br />89 <br />84-120 <br />Sample Matrix Quality Control <br />MS MSD M5/MSD RPD BXG <br />Analysis Name %REC %REC Limits RPD MAX Conc <br />Batch number: 03148A56A <br />Sample <br />number(s): 4051053-4051057 <br />TPH-GRO - Waters <br />113 <br />70-130 <br />Batch number: 031500002A <br />Sample <br />number(s): <br />4051053-4051057 <br />Methanol (by Direct Injection) <br />92 <br />96 <br />78-116 <br />4 <br />20 <br />Batch number: W031501AA <br />Sample <br />number(s): <br />4051053-4051057 <br />Ethanol <br />112 <br />111 <br />34-163 <br />1 <br />30 <br />Methyl Tertiary Butyl Ether <br />95 <br />96 <br />69-134 <br />2 <br />30 <br />di -Isopropyl ether <br />104 <br />107 <br />75-130 <br />3 <br />30 <br />Ethyl t -butyl ether <br />97 <br />99 <br />73-123 <br />2 <br />30 <br />t -Amyl methyl ether <br />94 <br />96 <br />77-117 <br />2 <br />30 <br />t -Butyl alcohol <br />86 <br />90 <br />39-155 <br />4 <br />30 <br />Benzene <br />303 <br />105 <br />83-128 <br />2 <br />30 <br />1,2-Dichloroethane <br />97 <br />99 <br />73-136 <br />2 <br />30 <br />Toluene <br />94 <br />96 <br />83-127 <br />2 <br />30 <br />1,2-Dibromoethane <br />90 <br />92 <br />78-120 <br />3 <br />30 <br />Ethylbenzene <br />93 <br />95 <br />82-134 <br />3 <br />30 <br />Xylene {Total) <br />92 <br />94 <br />82-130 <br />3 <br />30 <br />Surrogate Quality Control, <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 0314BA56A <br />* Outside of specification <br />('l) The result for one or both determinations was less than five times the LOQ. <br />- 12) 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 />Lancaster, PA 17605-2425 <br />717-656-2300 FAx7717-65r-7681 <br />DUP <br />Conc <br />Page I of 2 <br />RPD RPD Max <br />0 <br />DUP <br />RPD <br />30 <br />Dup <br />RPD <br />Max <br />,11c o.,., aitnrni <br />