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Lancaster <br /> Laboratories Analysis Report <br /> 25 New Holland Pike PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax 717-656-2681•www lancastertabs com <br /> Page ] of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 848999 <br /> Reported 04/28/03 at 01 20 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report: LCS LCSD LCS/LCSD <br /> Analysis Name Result EDL Unite REC 96REC Limits RPD RPD Max <br /> Batch number 03106A07D Sample number(a) 4030366-4030371 <br /> TPH-GRO - Waters N D 50 ug/l 95 70-130 <br /> Batch number 03112A07C Sample number(s) 4030372-4030379 <br /> TPH-GRO - Waters N D 50 ug/l 109 70-130 <br /> Batch number 031140015A Sample number(s) 4030377-4030379 <br /> Methanol (by Direct In3ection) N D 200 ug/l 81 78-114 <br /> Batch number P031121AA Sample number(s) 4030368-4030379 <br /> Ethanol N D 50 ug/l 107 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 100 77-127 <br /> di-Isopropyl ether N D 5 ug/l 99 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 101 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 101 79-113 <br /> t-Butyl alcohol N D 5 ug/l 106 53-147 <br /> Benzene N D 5 ug/l 101 85-117 <br /> 1,2-Dichloroethane N D 5 ug/l 100 77-132 <br /> Toluene N D 5 ug/l 92 85-115 <br /> 1,2-Dibromoethane N D 5 ug/l 93 81-114 <br /> Ethylbenzene N D 5 ug/l 98 82-119 <br /> ylene (Total) N D 5 ug/l 99 84-120 <br /> etch number P031121AB Sample number(s) 4030373,4030376 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 100 77-127 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name RE RHC Limits RPT) MAX Conc Conc RPD Mix <br /> Batch number 03106A07D Sample number(s) 4030368-4030371 <br /> TPH-GRO - Waters 106 105 70-130 2 30 <br /> Batch number 03112A07C Sample number(s) 4030372-4030379 <br /> TPH-GRO - Waters 115 105 70-130 8 30 <br /> Batch number 031140015A Sample number(s) 4030377-4030379 <br /> Methanol (by Direct In3ectlon) 100 81 78-116 21* 20 <br /> Batch number P031121AA Sample number(s) 4030368-4030379 <br /> Ethanol 105 104 34-163 1 30 <br /> Methyl Tertiary Butyl Ether 102 102 69-134 0 30 <br /> di-Isopropyl ether 101 103 75-130 1 30 <br /> Ethyl t-butyl ether 102 103 73-123 1 30 <br /> t-Amyl methyl ether 101 101 77-117 0 30 <br /> t-Butyl alcohol 302 104 39-155 1 30 <br /> Benzene 108 107 83-128 1 30 <br /> 1,2-Dichloroethane 104 103 73-136 1 30 <br /> Toluene 96 97 83-127 1 30 <br /> 1,2-Dibromoethane 93 94 78-120 1 30 <br /> Ethylbenzene 101 103 82-134 2 30 <br /> Xylene (Total) 101 104 82-130 3 30 <br /> *-Outside of specification <br /> r(1) The result for one or both determinations was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />