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Lancaster <br />� Laboratories <br />1 <br />Quality Control Summary <br />Analysis Name <br />Batch number 03056A07B <br />TPH-GRO - Waters <br />Batch number 03056A07C <br />TPH-GRO - Waters <br />Batch number 030570020A <br />Methanol (by Direct Injection) <br />Batch number N030601AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />ds -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 />Page 1 of 3 <br />RPD RPD Max <br />1 30 <br />1 30 <br />MS MSD MS/MSD RPD BKG DUP DUP <br />%REC %REC Limits RPD MAX Long Conc RPD <br />Sample number(s) 4000238 <br />111 124 70-130 8 30 <br />Sample number(s) 4000234-4000237 <br />111 124 70-130 8 30 <br />Sample number(s) 4000234-4000238 <br />92 92 69-127 0 20 <br />Sample number(s) 4000234-4000238 <br />100 <br />Client Name ChevronTexaco <br />34-163 <br />2 <br />Group Number <br />842369 <br />101 <br />Reported 03/10/03 at 09 <br />30 AM <br />30 <br />97 <br />100 <br />75-130 <br />3 <br />30 <br />Laboratory <br />Compliance Quality <br />Control <br />4 <br />30 <br />96 <br />97 <br />77-117 <br />2 <br />30 <br />' <br />84 <br />Blank <br />Blank <br />Report <br />LCS LCSD <br />LCS/LCSD <br />83-128 <br />Analysis Name <br />Result <br />6mL <br />Units <br />%RSC %REC <br />Limits <br />30 <br />Batch number 03056A07B <br />Sample <br />number(s) <br />4000238 <br />30 <br />100 <br />101 <br />TPH-GRO - Waters <br />N D <br />50 <br />ug/l <br />110 112 <br />70-130 <br />1 <br />Batch number 03056A07C <br />Sample <br />number(s) <br />4000234-4000237 <br />2 <br />30 <br />TPH-GRO - Waters <br />N D <br />50 <br />ug/1 <br />110 112 <br />70-130 <br />'Batch <br />number 030570020A <br />Sample <br />number(s) <br />4000234-4000238 <br />Methanol (by Direct In)ection) <br />N D <br />200 <br />ug/l <br />92 <br />64-130 <br />Batch number N030601AA <br />Sample <br />number(s) <br />4000234-4000238 <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />N D <br />N D <br />50 <br />5 <br />ug/1 <br />ug/l <br />100 <br />100 <br />43-159 <br />77-127 <br />di -Isopropyl ether <br />N D <br />5 <br />ug/1 <br />96 <br />74-125 <br />Ethyl t -butyl ether <br />N D <br />5 <br />ug/l <br />97 <br />74-120 <br />t -Amyl methyl ether <br />N D <br />5 <br />ug/1 <br />96 <br />79-113 <br />t -Butyl alcohol <br />N D <br />5 <br />ug/l <br />80 <br />53-147 <br />Benzene <br />N D <br />5 <br />u9/1 <br />101 <br />85-117 <br />1,2-Dichloroethane <br />N D <br />5 <br />ug/l <br />99 <br />77-132 <br />Toluene <br />N D <br />5 <br />ug/l <br />101 <br />85-115 <br />1,2-Dlbromoethane <br />N D <br />5 <br />ug/l <br />98 <br />81-114 <br />#ylbenzene <br />ene (Total) <br />N D <br />N D <br />5 <br />5 <br />ug/l <br />ug/l <br />101 <br />103 <br />82-119 <br />84-120 <br />' <br />Sample <br />Matrix <br />Quality Control <br />Analysis Name <br />Batch number 03056A07B <br />TPH-GRO - Waters <br />Batch number 03056A07C <br />TPH-GRO - Waters <br />Batch number 030570020A <br />Methanol (by Direct Injection) <br />Batch number N030601AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />ds -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 />Page 1 of 3 <br />RPD RPD Max <br />1 30 <br />1 30 <br />MS MSD MS/MSD RPD BKG DUP DUP <br />%REC %REC Limits RPD MAX Long Conc RPD <br />Sample number(s) 4000238 <br />111 124 70-130 8 30 <br />Sample number(s) 4000234-4000237 <br />111 124 70-130 8 30 <br />Sample number(s) 4000234-4000238 <br />92 92 69-127 0 20 <br />Sample number(s) 4000234-4000238 <br />100 <br />102 <br />34-163 <br />2 <br />30 <br />99 <br />101 <br />69-134 <br />2 <br />30 <br />97 <br />100 <br />75-130 <br />3 <br />30 <br />97 <br />100 <br />73-123 <br />4 <br />30 <br />96 <br />97 <br />77-117 <br />2 <br />30 <br />83 <br />84 <br />39-155 <br />2 <br />30 <br />104 <br />107 <br />83-128 <br />2 <br />30 <br />103 <br />104 <br />73-136 <br />1 <br />30 <br />105 <br />107 <br />83-127 <br />2 <br />30 <br />100 <br />101 <br />78-120 <br />1 <br />30 <br />107 <br />108 <br />82-134 <br />1 <br />30 <br />IOB <br />110 <br />82-130 <br />2 <br />30 <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 />Dup <br />RPD <br />Max <br />2216 Rev 1012102 <br />Lancaster Laboratones Inc <br />' MEMBER <br />® <br />2425 New Holland Pike <br />PO Box 12425 <br />Lancaster 17605-2 <br />717-656 230000 Fax 717-67-6 56-2681 <br />Dup <br />RPD <br />Max <br />2216 Rev 1012102 <br />