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Lancaster <br /> Laboratories Analysis Report <br /> 0425 New Holland Pike PO Box 12425 Lancaster PA 17605 2425•717-656 2300 Fax 717-656 2681•www lancastertabs com <br /> Pagel of 3 <br /> Quality Control Summary <br /> Client Mame ChevronTexaco Group Number 861651 <br /> Reported 08/14/03 at 03 24 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %RBC Limits RPD RPD Max <br /> Batch number 03216A16A Sample number(s) 4093608-4093611 <br /> TPH-GRO - Waters N D 50 ug/l 98 98 70-130 0 30 <br /> Batch number 032200023A Sample numbers) 4093609-4093611 <br /> Methanol (by Direct Injection) N D 200 ug/l 96 78-114 <br /> Batch number P032212AB Sample number(s) 4093608 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 112 77-227 <br /> Benzene N D 5 ug/l 110 85-117 <br /> Toluene N D 5 ug/l 101 85-115 <br /> Ethylbenzene N D 5 ug/l 100 82-119 <br /> Xylene (Total) N D 5 ug/l 103 84-120 <br /> Batch number P032252AB Sample number(s) 4093609-4093611 <br /> Ethanol N D 50 ug/1 87 43-159 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 98 77-127 <br /> di-Isopropyl ether N D 5 ug/1 98 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 102 74-120 <br /> t-Amyl methyl ether N D 5 u9/1 109 79-113 <br /> t-Butyl alcohol N D 5 ug/1 99 53-147 <br /> enzene N D 5 ug/l 102 85-117 <br /> 2-Dichloroethane N D 5 ug/l 108 77-132 <br /> luene N D 5 ug/l 98 85-115 <br /> 1,2-Dxbromoethane N D 5 ug/l 99 81-114 <br /> Ethylbenzene N D 5 ug/l 99 82-119 <br /> Xylene (Total) N D 5 ug/1 100 84-120 <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 03216A16A Sample number(s) 4093608-4093611 <br /> TPH-GRO - Waters 115 70-130 <br /> Batch number 032200023A Sample number(s) 4093609-4093611 <br /> Methanol (by Direct Injection) 100 100 78-116 0 20 <br /> Batch number P032212AB Sample number(s) 4093608 <br /> Methyl Tertiary Butyl Ether 116 119 69-134 3 30 <br /> Benzene 125 123 83-128 1 30 <br /> Toluene 117 119 83-127 2 30 <br /> Ethylbenzene 118 119 82-134 1 30 <br /> Xylene (Total) 115 117 82-130 2 30 <br /> Batch number P032252AR Sample number(s) 4093609-4093611 <br /> Ethanol 77 79 34-163 2 30 <br /> Methyl Tertiary Butyl Ether 7* 51* 69-134 13 30 <br /> di-Isopropyl ether 110 109 75-130 1 30 <br /> Ethyl t-butyl ether 108 110 73-123 2 30 <br /> t-Amyl methyl ether 110 113 77-117 2 30 <br /> t-Butyl alcohol 104 105 39-155 1 30 <br /> Benzene 114 114 83-128 0 30 <br /> *-Outside of specification <br /> l02) <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 />