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Lancaster Laboratories Page 2 of 7 <br />Wherequality is a science. <br />Quality Control Summary <br />Client Name: Chevron Products Company Group Number: 787778 <br />Reported: 12/11/01 at 05:98 PM <br />Laboratory Compliance 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 />Lancaster Laboratories, Inc. <br />1y/I M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, PA 17605-2425 <br />717-656-2300 Fax: 717-656-2681 2216 Rev. 9/11/00 <br />Blank <br />Blank Report <br />LCS <br />LCSD <br />LCS/LCSD <br />Analysis Name <br />Result <br />MDL Units <br />%REC <br />%REC <br />Limits RPD RPD Max <br />Ethyl t -butyl ether <br />N.D. <br />.5 ug/l <br />93 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />.5 ug/l <br />90 <br />7-7-118 <br />t -Butyl alcohol <br />N.D. <br />5. ug/l <br />94 <br />58-147 <br />1,2-Dichloroethane <br />N.A. <br />.5 ug/l <br />92 <br />84-131 <br />1,2-Dibromoethane <br />N.D. <br />.5 ug/l <br />90 <br />84-119 <br />Batch number: V013321AB <br />Sample <br />number(s): 3733567-3733572 <br />Ethanol <br />N.D. <br />50. ug/l <br />100 <br />70-130 <br />Methyl t -butyl ether <br />N.D. <br />.5 ug/l <br />102 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />-5 ug/l <br />101 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 ug/1 <br />101 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />-5 ug/l <br />101 <br />77-118 <br />t -Butyl alcohol <br />N.D. <br />5. ug/l <br />104 <br />58-147 <br />1,2-Dichloroethane <br />N.D. <br />.5 ug/l <br />97 <br />84-131 <br />1,2-Dibromoethane <br />N.D. <br />.5 ug/l <br />96 <br />84-119 <br />Batch number: V013332AB <br />Sample <br />number(s): 3733565 <br />Ethanol <br />N.D. <br />50. ug/l <br />128 <br />70-130 <br />Methyl t -butyl ether <br />N.D. <br />.5 ug/1 <br />98 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />.5 ug/l <br />97 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 ug/l <br />91 <br />74-120 <br />Amyl methyl ether <br />N.D. <br />.5 ug/l <br />94 <br />77-118 <br />Butyl alcohol <br />N.D. <br />5. ug/l <br />100 <br />5B-147 <br />2-Dichloroethane <br />N.D. <br />.5 ug/l <br />91 <br />84-131 <br />1,2-Dibromoethane <br />N.D. <br />.5 ug/l <br />92 <br />84-119 <br />Sample Matrix <br />Quality <br />Control <br />MS <br />MSD MS/MSD <br />RPD <br />BKG <br />DUP DUP DUP <br />RPD <br />Analysis Name <br />%REC <br />%REC Limits RPD <br />MAX <br />Conc <br />Conc RPD Max <br />Batch number: 013220016A <br />Sample <br />nurrber(s): 3733543-3733560 <br />Methanol (by Direct Injection) <br />93 <br />96 78--114 4 <br />20 <br />Batch number: 013320017A <br />Sample <br />number(s): 3733561-3733572 <br />Methanol (by Direct Injection) <br />93 <br />96 78-114 4 <br />20 <br />Batch number: 01332A51 <br />Sample <br />number(s): 3733543-3733555 <br />TPH-GRO - Waters <br />106 <br />106 74-132 0 <br />20 <br />Benzene <br />106 <br />108 66-140 2 <br />20 <br />Toluene <br />107 <br />109 72-138 2 <br />30 <br />Ethylbenzene <br />109 <br />112 71-138 3 <br />30 <br />Total Xylenes <br />109 <br />112 69-140 2 <br />30 <br />Batch number: 01333A55 <br />Sample <br />numbex(s): 3733567-3733573 <br />TPH-GRO - Waters <br />101 <br />74-132 <br />Benzene <br />125 <br />66-140 <br />Toluene <br />118 <br />72-138 <br />Ethylbenzene <br />126 <br />71-138 <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 />Lancaster Laboratories, Inc. <br />1y/I M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, PA 17605-2425 <br />717-656-2300 Fax: 717-656-2681 2216 Rev. 9/11/00 <br />