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Analysis Report <br /> Lancaster <br /> Laboratories <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 835370 <br /> Reported 01/08/03 at 09 11 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units $REC 96REC Limits RPD RPD Max <br /> Batch number 02354B56A Sample number(s) 3965536-3965545 <br /> TPK-GRO - Waters N D 50 ug/l 91 96 74-116 5 30 <br /> Batch number N023611AB Sample number(s) 3965536-3965545 <br /> Methyl t-butyl ether N D 5 ug/l 92 77-127 <br /> di-Isopropyl ether N D 5 ug/l 92 74-125 <br /> Ethyl t-butyl ether N D 5 ug/1 90 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 90 71-114 <br /> t-Butyl alcohol N D 5 ug/1 87 59-139 <br /> Benzene N D 5 ug/l 100 85-117 <br /> 1,2-Dichloroethane N D 5 ug/l 101 77-132 <br /> Toluene N D 5 ug/l 99 85-115 <br /> 1,2-Dibromoethane N D 5 ug/l 92 81-114 <br /> Ethylbenzene N D 5 ug/l 99 82-119 <br /> Xylene (Total) N D 5 ug/1 101 84-120 <br /> 0tch number N023611AC Sample number W 3965539 <br /> 77-127 <br /> hyl t-butyl ether N D 5 ug/l 92 <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 02354B56A Sample number(s) 3965536-3965545 <br /> TPH-GRO - Waters 98 74-132 <br /> Batch number N023611AB Sample number(s) 3965536-3965545 <br /> Methyl t-butyl ether 97 102 69-134 3 30 <br /> dx-Isopropyl ether 97 101 68-133 4 30 <br /> Ethyl t-butyl ether 97 101 73-123 4 30 <br /> t-Amyl methyl ether 97 100 69-118 3 30 <br /> t-Butyl alcohol 89 92 51-148 3 30 <br /> Benzene 109 113 78-134 4 30 <br /> 1,2-Dichloroethane 107 110 73-136 3 30 <br /> Toluene 107 110 83-127 3 30 <br /> 1,2-Dibromoethane 97 98 78-120 1 30 <br /> Ethylbenzene 107 108 62-134 1 30 <br /> Xylene (Total) 108 109 82-130 1 30 <br /> Batch number N023611AC Sample number(s) 3965539 <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 /> M E Ni B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605-2425 - <br />