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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605 2425 717 6562300 Fax 717 656 2881•www)ancasterlabs com <br /> Page ] of 2 <br /> Quality Control Summary <br /> 1 Client Name ChevronTexaco Group Number 879063 <br /> Reported 12/29/03 at 11 06 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 1131160032A Sample number(s) 4188371-4188375 <br />' Methanol (by Direct In3ection) N D 200 ug/l 312 78-114 <br /> Batch number 03356A51A Sample number(s) 4188371-4188375 <br /> TPH-GRO - Waters N D 50 ug/l 127 97 70-130 27 30 <br /> ' Batch number P033531AA Sample number(s) 4188371-4188375 <br /> Ethanol N D 50 ug/l 123 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 93 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 96 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/1 96 74-120 <br /> ' t-Amyl methyl ether N D 0 5 ug/l 93 79-113 <br /> t-Butyl alcohol N D 5 ug/l 115 53-147 <br /> Benzene N D 0 5 ug/l 95 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 92 77-132 <br /> Toluene N D 0 5 ug/l 94 85-115 <br /> 1 1,2-Dibromoethane N D 0 5 ug/l 96 81-114 <br /> Ethylbenzene N D 0 5 ug/l 96 82-119 <br /> Xylene (Total) N D 0 5 ug/l 95 84-120 <br /> ' Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> Analysis Name AERC RSC imita RPD RFD <br /> SAX Cone Conc RPD Max <br /> ' Batch number 033560032A Sample number(s) 4188371-4188375 <br /> Methanol (by Direct Injection) 119* 112 73-117 7 20 <br /> Batch number 03356A53.A Sample number(a) 4188371-4188375 <br /> ' TPH-GRO - Waters 113 63-154 <br /> Batch number P033531AA Sample number(s) 4188371-4168375 <br /> Ethanol 103 97 38-149 6 30 <br /> Methyl Tertiary Butyl Ether 1* 60* 69-134 17 30 <br /> di-Isopropyl ether 97 97 75-130 0 30 <br /> ' Ethyl t-butyl ether 94 96 78-119 2 30 <br /> t-Amyl methyl ether 93 92 77-117 1 30 <br /> t-Butyl alcohol 116 103 44-150 11 30 <br /> Benzene 97 99 83-128 1 30 <br /> 1,2-Dichloroethane 92 91 73-136 2 30 <br /> 1 Toluene 101 98 83-127 3 30 <br /> 1,2-Dibromoethane 97 90 78-120 7 30 <br /> Ethylbenzene 101 96 82-129 5 30 <br /> Xylene (Total) 102 96 82-130 6 30 <br /> ' <br /> Surrogate Quality g Q y C ontrol <br /> ' Analysis Name Methanol and Ethanol <br /> Batch number 033560032A <br /> *-Outside of specification <br /> 1 (l) 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 /> i <br /> 1 <br /> 1 <br />