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LancasterAnalysis Report <br /> Laboratories Y • <br /> 2425 New Holland Pike PQ Box 12425 Lancasler PA 176052425 1717-656-2300 Fax 717 656 2681•www lancasterlebs com <br /> Page 2 of 6 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 966868 <br /> Reported 11/29/05 at 01 12 PM <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 /> Ethanol N D 50 u9/1 111 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 101 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 101 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 101 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 100 79-113 <br /> t-Butyl alcohol N D 5 ug/1 100 60-133 <br /> Benzene N D 0 5 ug/l 102 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 100 77-132 <br /> Toluene N D 0 5 ug/l 103 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 95 81-114 <br /> Ethylbenzene N D 0 5 ug/l 104 82-119 <br /> Xylene (Total) N D 0 5 ug/l 106 83-113 <br /> Batch number Z053211AA Sample number(s) 4644866 <br /> Ethanol N D 50 ug/1 107 30-155 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 100 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 99 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 99 74-120 <br /> t-Amyl methyl ether N D 0 S ug/l 99 79-113 <br /> t-Butyl alcohol N D 5 ug/l 98 60-133 <br /> Benzene N D 0 5 u9/1 100 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 99 77-132 <br /> Toluene N D 0 5 u9/1 101 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 92 81-114 <br /> Ethylbenzene N D 0 5 ug/1 103 82-119 <br /> Xylene (Total) N D 0 5 ug/l 103 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dup RPD <br /> Analysis Name IM %RRC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 05315A16A Sample number(s) 4644864-4644866 <br /> TPH-GRO - waters 117 63-154 <br /> Batch number 053180007A Sample number(s) 4644865 <br /> Methanol (by Direct Injection) 100 96 66-133 4 20 <br /> Batc.ri numver 053180006A Sample number s; 464486£-4644861 <br /> Methanol (by Direct Injection) 96 96 66-133 0 20 <br /> Batch number 05318A16A Sample number(s) 4644867 <br /> TPH-GRO - Waters 115 63-154 <br /> Batch number Z053201AA Sample number(s) 4644867 <br /> Ethanol 109 104 26-162 5 30 <br /> Methyl Tertiary Butyl Ether 97 98 69-134 1 30 <br /> di-Isopropyl ether 96 97 75-130 1 30 <br /> Ethyl t-butyl ether 97 98 78-119 1 30 <br /> t-Amyl methyl ether 98 99 72-125 1 30 <br /> t-Butyl alcohol 97 95 56-134 1 30 <br /> Benzene 104 105 83-128 1 30 <br /> 1,2-Dzchloroethane 97 98 70-143 1 30 <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 />