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Lancaster Laboratories <br />Where qualityis a silence. <br />Quality Control Summary <br />Client Name: ChevronTexaco <br />Group Number: 822883 <br />Reported: 09/27/02 at 01:13 PM <br />Laboratory Compliance Quality <br />Control <br />Blank <br />Blank <br />Report <br />LCS <br />LCSD <br />LCS/LCSD <br />Analye -0 Name <br />Result <br />MDL <br />Units <br />%REC <br />10C <br />Limits <br />Batch number: 02259ASIA <br />Sample <br />number(s): <br />3898975-3898978 <br />TPH-GRO - Waters <br />N.D. <br />50. <br />ug/l <br />82 <br />82 <br />74-116 <br />Batch number: 02259ASlB <br />Sample <br />number(s): <br />3898979 <br />TPH-GRO - Waters <br />N.D. <br />50. <br />ug/1 <br />82 <br />82 <br />74-116 <br />Batch number: 022630004A <br />Sample <br />number(s): <br />3898975-3898979 <br />Methanol (by Direct Injection) <br />N.D. <br />200. <br />ug/1 <br />100 <br />64-130 <br />Batch number: N022592AB <br />Sample <br />number(s): <br />3898975-3896980 <br />Ethanol <br />N.D. <br />50. <br />ug/1 <br />52 <br />43-159 <br />Methyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />90 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />.5 <br />ug/1 <br />86 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />85 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />.5 <br />ug/l <br />85 <br />71-114 <br />t -Butyl alcohol <br />N.D. <br />5. <br />ug/1 <br />84 <br />59-139 <br />Benzene <br />N.D. <br />.5 <br />ug/1 <br />96 <br />85-117 <br />1,2-Dichloroethane <br />N.D. <br />.5 <br />ug/1 <br />92 <br />77-132 <br />Toluene <br />N.D. <br />.5 <br />ug/1 <br />96 <br />85-115 <br />1,2-Dibromoethane <br />N.D. <br />.5 <br />ug/1 <br />93 <br />81-114 <br />Ethylbenzene <br />N.D. <br />-5 <br />ug/1 <br />96 <br />82-119 <br />lene (Total) <br />N.D. <br />.5 <br />ug/1 <br />99 <br />84-120 <br />tch number: N022601AA <br />0th <br />Sample <br />number(s): <br />3898981 <br />anol <br />N.D. <br />50. <br />ug/1 <br />66 <br />43-159 <br />Methyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />93 <br />77-127 <br />di -Isopropyl ether <br />N.D. <br />.5 <br />ug/1 <br />85 <br />74-125 <br />Ethyl t -butyl ether <br />N.D. <br />.5 <br />ug/1 <br />86 <br />74-120 <br />t -Amyl methyl ether <br />N.D. <br />.5 <br />ug/1 <br />87 <br />71-114 <br />t -Butyl alcohol <br />N.D. <br />S. <br />ug/1 <br />91 <br />59-139 <br />Benzene <br />N.D. <br />.5 <br />ug/1 <br />97 <br />85-117 <br />1,2-Dichloroethane <br />N.D. <br />.5 <br />ug/1 <br />91 <br />77-132 <br />Toluene <br />N.D. <br />.5 <br />ug/1 <br />95 <br />85-115 <br />1,2-Dibromoethane <br />N.D. <br />.5 <br />ug/1 <br />92 <br />81-114 <br />Ethylbenzene <br />N.D. <br />.5 <br />ug/1 <br />96 <br />82-119 <br />Xylene (Total) <br />N.D. <br />.5 <br />ug/1 <br />99 <br />84-120 <br />Sample <br />Matrix <br />Quality <br />Control <br />MS <br />MSD MS/MSD <br />RPD <br />BKG <br />DUP <br />�►nalvsis Name <br />%REC <br />$RRC Limits RPD MAX <br />COAL <br />cone <br />Batch number: 02259ASIA <br />Sample <br />number(s): <br />3898975-3898978 <br />TPH-GRO - Waters <br />110 <br />74-132 <br />Batch number: 02259A51B <br />Sample <br />number(s): <br />3898979 <br />TPH-GRO - Waters <br />110 <br />74-132 <br />Batch number: 022630004A <br />Sample <br />number(e): <br />3898975-3898979 <br />Methanol (by Direct Injection) <br />104 <br />104 69-127 0 <br />20 <br />Batch number: N022592AB <br />Sample <br />number(s): <br />3898975-3898980 <br />*- Outside of specification <br />(1) 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 />fA E M B E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, 00 1Fax:7 425 <br />7-6 <br />717-656-2300 Fax: 717-656-2681 <br />Page 1 of 3 <br />RPD RPD Max <br />1 30 <br />1 30 <br />Dt1P <br />RPD <br />Dup <br />RPD <br />Max,,,, <br />2216 Rev, 9111/00 <br />