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Lancaster Laboratories <br />Wh l V 3 'rot Summary <br />Client Name: ChevronTexaco Group Number: 817247 <br />Reported: 08/15/02 at 03:42 PM <br />Sample Matrix Quality Control <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 />Page 3 of 8 <br />DUP Dup <br />RPD <br />RPD Max <br />Lancaster Laboratories, Inc. <br />M E M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, 17605.2425 <br />717-656-230000 Fax: 717-656-2681 2216 Rev. 9111/00 <br />MS <br />MSD <br />MS/MSD <br />RPD BKO DUP <br />Analysis Name <br />%REC <br />%REC <br />Limits <br />RPD <br />MAX Conc Conc <br />TPH-GRO - Waters <br />113 <br />74-132 <br />Batch number: 02213ASIB <br />Sample <br />number(s): <br />3869047 <br />TPH-GRO - Waters <br />113 <br />74-132 <br />Batch number: 02213A56A <br />Sample <br />number(s): <br />3869035-3869036,3869039-3869044 <br />TPH-GRO - Waters <br />98 <br />74-132 <br />Batch number: 02213AS6B <br />Sample <br />number(s): <br />3869045 <br />TPH-GRO - Waters <br />98 <br />74-132 <br />Batch number: 022140010A <br />Sample <br />number(s): <br />3869020-3869027 <br />Methanol (by Direct Injection) <br />100 <br />96 <br />58-137 <br />4 <br />20 <br />Batch number: 022140013A <br />Sample <br />number(s): <br />3869028-3869047 <br />Methanol (by Direct Injection) <br />96 <br />100 <br />58-137 <br />4 <br />20 <br />Batch number: N022142AB <br />Sample <br />number(s): <br />3869019-3869021 <br />Ethanol <br />112 <br />108 <br />34-163 <br />3 <br />30 <br />hyl t -butyl ether <br />95 <br />99 <br />69-134 <br />3 <br />30 <br />Isopropyl ether <br />99 <br />102 <br />68-133 <br />3 <br />30 <br />hyl t -butyl ether <br />91 <br />96 <br />73-123 <br />5 <br />30 <br />t -Amyl methyl ether <br />92 <br />95 <br />69-118 <br />3 <br />30 <br />t -Butyl alcohol <br />103 <br />103 <br />51-148 <br />0 <br />30 <br />Benzene <br />111 <br />112 <br />78-134 <br />1 <br />30 <br />1,2-Dichloroethane <br />105 <br />104 <br />73-136 <br />0 <br />30 <br />Toluene <br />107 <br />108 <br />83-127 <br />1 <br />30 <br />1,2-Dibromoethane <br />98 <br />98 <br />78-120 <br />0 <br />30 <br />Ethylbenzene <br />106 <br />107 <br />82-134 <br />0 <br />30 <br />Xylene (Total) <br />107 <br />107 <br />82-130 <br />0 <br />30 <br />Batch number: P022121AB <br />Sample <br />number(s): <br />3869022-3869028 <br />Ethanol <br />73 <br />61 <br />34-163 <br />17 <br />30 <br />Methyl t -butyl ether <br />87 <br />89 <br />69-134 <br />2 <br />30 <br />di -Isopropyl ether <br />89 <br />88 <br />68-133 <br />1 <br />30 <br />Ethyl t -butyl ether <br />94 <br />95 <br />73-123 <br />0 <br />30 <br />t -Amyl methyl ether <br />92 <br />90 <br />69-118 <br />1 <br />30 <br />t -Butyl alcohol <br />86 <br />82 <br />51-148 <br />4 <br />30 <br />Benzene <br />103 <br />103 <br />78-134 <br />0 <br />30 <br />1,2-Dichloroethane <br />92 <br />91 <br />73-136 <br />1 <br />30 <br />Toluene <br />103 <br />100 <br />83-127 <br />3 <br />30 <br />1,2-Dibromoethane <br />93 <br />90 <br />78-120 <br />3 <br />30 <br />Ethylbenzene <br />106 <br />103 <br />82-134 <br />2 <br />30 <br />Xylene (Total) <br />108 <br />los <br />82-130 <br />3 <br />30 <br />Batch number: P022121AC <br />Sample <br />number(s): <br />3869029-3869033 <br />Ethanol <br />73 <br />61 <br />34-163 <br />17 <br />30 <br />Methyl t -butyl ether <br />87 <br />89 <br />69-134 <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 />Page 3 of 8 <br />DUP Dup <br />RPD <br />RPD Max <br />Lancaster Laboratories, Inc. <br />M E M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, 17605.2425 <br />717-656-230000 Fax: 717-656-2681 2216 Rev. 9111/00 <br />