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Lancaster <br /> x Analysis Laboratories Report <br /> IW New Holland Pike PO Box 12425 Lancaster,PA 17605-2425.717-656-2300 Fax 717-656-2681•www lanctasterlabs com <br /> Pagel of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 850838 <br /> Reported 05/19/03 at 07 36 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unita %REC %REC Limits RPD RPD Max <br /> Batch number 031270002A Sample number(s) 4039136-4039143 <br /> Methanol (by Direct Injection) N D 200 ug/l 100 78-114 <br /> Batch number 031270004A Sample number(s) 4039144-4039145 <br /> Methanol (by Direct Injection) N D 200 ug/l 96 78-114 <br /> Batch number 03127A07C Sample number(s) 4039135 <br /> TPH-GRO - Waters N D 50 ug/l 99 70-130 <br /> Batch number 0312BA07B Sample number(s) 4039136-4039142 <br /> TPH-GRO - Waters N D 50 ug/l 108 70-130 <br /> Batch number 03128A07C Sample number(s) 4039143-4039145 <br /> TPH-GRO - Waters N D 50 ug/l 108 70-130 <br /> Batch number N032322AB Sample number s) 4039135-4039143 <br /> Ethanol N D 50 ug/l 86 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 110 77-127 <br /> di-Isopropyl ether N D 5 ug/l 106 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 98 74-120 <br /> -Amyl methyl ether N D 5 ug/l 99 79-113 <br /> utyl alcohol N D 5 ug/l 92 53-147 <br /> zene N D 5 ug/l 116 85-117 <br /> 2-Dichloroethane N D 5 ug/l 108 77-132 <br /> Toluene N D 5 ug/l 101 85-115 <br /> 1,2-Dibromoethane N D 5 ug/l 99 81-114 <br /> Ethylbenzene N D 5 ug/l 98 82-119 <br /> Xylene (Total) N D 5 ug/l 104 84-120 <br /> Batch number N031351AA Sample number(s) 4039144-4039145 <br /> Ethanol N ❑ 50 ug/l 78 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 97 77-127 <br /> di-Isopropyl ether N D 5 ug/l 93 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 89 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 89 79-113 <br /> t-Butyl alcohol N D 5 ug/l 80 53-147 <br /> Benzene N ❑ 5 ug/l 104 85-117 <br /> 1,2-Dichloroethane N D 5 ug/l 95 77-132 <br /> Toluene N D 5 ug/l 98 85-115 <br /> 1,2-Dibromoethane N D 5 ug/l 95 81-114 <br /> Ethylbenzene N D 5 ug/l 95 82-119 <br /> Xylene (Total) N D 5 ug/l 101 84-120 <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name REC %REC Limits RPD MAX Conc Conc RPD Max_ <br /> Batch number 031270002A Sample number(s) 4039136-4039143 <br /> Methanol (by Direct In3ection) 104 104 78-116 0 20 <br /> Batch number 031270004A Sample number(s) 4039144-4039145 <br /> Methanol (by Direct In3ection) 108 100 78-116 8 20 <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 />