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LancasterAnalysis nalys►s Report <br /> 2425 New Holland Pike,PO Bax 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancastarlabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 890982 <br /> Reported: 04/15/04 at 05 :13 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSA RPD BXG DUP DUP Dup RPD <br /> Analysis Name %REC 9oREC Limits RPD MAX Cone Cone RPD Max <br /> TPH-GRO - Soils 85 77 39-118 10 30 <br /> Batch number: 041030001A Sample number(s) : 4249189-4249193 <br /> TPH - DRO CA LUFT (Soils) 74 34 21-159 45* 20 <br /> Batch number: D040971AS Sample number(s) : 4249190-4249193 <br /> Methyl Tertiary Butyl Ether 107 104 57-136 2 30 <br /> di-Isopropyl ether 94 92 55-132 2 30 <br /> Ethyl t-butyl ether 98 97 58-127 1 30 <br /> t-Amyl methyl ether 100 97 58-126 3 30 <br /> t-Butyl alcohol 99 97 38-160 2 30 <br /> Benzene 96 94 52-141 3 30 <br /> 1,2-Dichloroethane 109 108 57-137 1 30 <br /> Toluene 92 117 45-142 24 30 <br /> 1,2-Dibromoethane 96 94 61-125 2 30 <br /> Ethylbenzene 96 92 40-143 4 30 <br /> Xylene (Total) a5 95 40-143 11 30 <br /> Batch number: Q040982AS Sample number(s) : 4249189 <br /> Methyl Tertiary Butyl Ether 103 103 57-136 1 30 <br /> di-isopropyl ether 102 102 55-132 1 30 <br /> Ethyl t-butyl ether 97 99 58-127 2 30 <br /> t-Amyl methyl ether 93 94 58-126 2 30 <br /> t-Butyl alcohol 95 96 38-160 2 30 <br /> Benzene 96 97 52-141 2 30 <br /> 1,2-Dichloroethane 93 95 57-137 3 30 <br /> Toluene 94 94 45-142 1 30 <br /> 1,2-Dibromoethane 98 99 61-125 1 30 <br /> Ethylbenzene 95 96 40-143 2 30 <br /> Xylene (Total) 95 97 40-143 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH Fuels by GC (Soils) <br /> Batch number: 040990003A <br /> Chlorobenzene Orthoterphenyl <br /> 4249189 95 103 <br /> 4249190 91 95 <br /> 4249191 93 97 <br /> 4249192 80 98 <br /> 4249193 78 94 <br /> Blank 180* 102 <br /> LCS 110 117 <br /> LCSD 105 121 <br /> Limits: 24-136 42-143 <br /> Analysis Name: TPH-GPO - Soils <br /> Batch number: 04099A34A <br /> Trifluorotoluene-F <br /> *-Outside of specification <br /> (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 />