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Analysis Report <br /> Lancaster <br /> Laboratories <br /> Page I of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 832126 <br /> Reported 12/17/02 at 08 03 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units 3AIRC %REC Limits RPD RPD Max <br /> Batch number 02329A53A Sample number(s) 3947116-3947125 <br /> Benzene N D 2 ug/l 97 80-118 <br /> Toluene N D 2 ug/l 101 82-119 <br /> Ethylbenzene N D 2 ug/l 100 81-119 <br /> Total Xylenes N D 6 ug/l 99 82-120 <br /> Methyl tert-Butyl Ether N D 3 ug/l 97 79-127 <br /> TPH-GRO - Waters N D 50 ug/l 99 100 74-116 1 30 <br /> TPH-GRO - Waters N D 50 ug/l 99 100 74-116 1 30 <br /> Batch number 023300011A Sample number(s) 3947117-3947125 <br /> Methanol (by Direct Infection) N D 200 ug/l 308 64-130 <br /> Batch number N023332AA Sample number(s) 3947117-3947123 <br /> Ethanol N D 50 ug/l 113 43-159 <br /> Methyl t-butyl ether N D 5 u9/1 104 77-127 <br /> di-Isopropyl ether N D 5 ug/l 109 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 94 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 90 71-114 <br /> t-Butyl alcohol N D 5 ug/l 108 59-139 <br /> Benzene N D 5 ug/l 103 85-117 <br /> 02-D2chloroethane N D 5 ug/l 106 77-132 <br /> oluene N D 5 ug/l 106 85-115 <br /> ,2-Dxbromoethane N D 5 ug/l 96 81-114 <br /> Ethylbenzene N D 5 ug/l 106 82-119 <br /> Xylene (Total) N D 5 ug/l 106 84-120 <br /> Batch number N023332AB Sample number(s) 3947124-3947125 <br /> Ethanol N D 50 ug/l 113 43-159 <br /> Methyl t-butyl ether N ❑ 5 ug/l 104 77-127 <br /> di-Isopropyl ether N D 5 ug/l 109 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 94 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 90 71-114 <br /> t-Butyl alcohol N D 5 ug/l 108 59-139 <br /> Benzene N D 5 ug/l 103 85-117 <br /> 1,2-Dichloroethane N D 5 ug/l 106 77-132 <br /> Toluene N D 5 ug/1 106 85-115 <br /> 1,2-Dibromoethane N D 5 ug/l 96 81-114 <br /> Ethylbenzene N D 5 ug/l 106 82-119 <br /> Xylene (Total) N D 5 ug/l 106 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD ERG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Cone RPD Max <br /> Batch number 02329A53A Sample number(s) 3947116-3947125 <br /> Benzene 90 100 83-130 10 30 <br /> Toluene 96 104 87-129 8 30 <br /> Ethylbenzene 97 102 86-133 5 30 <br /> Total Xylenes 96 96 86-132 0 30 <br /> Methyl tert-Butyl Ether 8o 88 66-140 5 30 <br /> TPH-GRO - Waters 83 85 74-132 3 30 <br /> *- Outside of specification <br /> 40l) The result for one or bath determinations was less than five times the LOQ <br /> 2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M E 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 1412102 <br />