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Lancaster <br /> IS Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605 2425 717 656 2300 Fax 717 656 2681•www lancasterlatls corn <br /> Page 1 of 3 <br /> Quality Control Su =ary <br /> Client Name ChevronTexaco Group Number 885277 <br /> Reported 02/27/04 at 01 56 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC 9oR.EC Limits RPD RPD Max <br /> Batch number 040500027A Sample numbers) 4219187-4219189 <br /> Methanol (by Direct In?ection) N D 200 ug/l 96 78-114 <br /> Batch number 04050ACSC Sample number(s) 4219187-4219189 <br /> TPH-GRO - Waters N D 50 ug/i 87 70-130 <br /> Batch number P040553AA Sample number(r) 4219187 <br /> Ethanol N D 50 ug/l 102 46-145 <br /> di-Isopropyl ether N D 0 5 ug/l 96 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 95 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 97 79-113 <br /> t-Butyl alcohol N D 5 ug/l 93 57-141 <br /> Benzene N D 0 5 ug/l 97 85-117 <br /> 1 2-Dlchloroethane N D 0 5 ug/l 95 77-132 <br /> Toluene N D 0 5 ug/l 97 85-115 <br /> 1 2-Dlbromoethane N D 0 5 ug/l 96 81-114 <br /> Ethylbenzene N D 0 5 ug/1 98 82-119 <br /> Xylene (Total) N D 0 5 ug/i 97 84-120 <br /> Batch number P040561AA Sample number(s) 4219188-4219189 <br /> Ethanol N D 5o ug/l 113 46-145 <br /> . Methyl Tertiary Butyl Ether N D 0 5 ug/l 94 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 94 67-130 <br /> Ethyl t-butyl ether N D 0 5 ug/l 94 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 94 79-113 <br /> t-Butyl alcohol N D 5 ug/l 98 57-141 <br /> Benzene N D 0 5 ug/l 95 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 93 77-132 <br /> Toluene N D 0 5 ug/1 96 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 95 81-114 <br /> Ethylbenzene N D 0 5 ug/l 96 82-119 <br /> Xylene (Total) N D 0 5 ug/l 96 84-120 <br /> Batch number P040571AA Sample number(s) 4219187 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 95 77-127 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysia Name $REC RSC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 040500027A Sample number(s) 4219187-4219189 <br /> Methanol (by Direct Infection) 96 96 73-117 0 20 <br /> Batch number 0405OA08C Sample number(s) 4219187-4219189 <br /> TPH-GRO - Waters 104 95 63-154 6 30 <br /> Batch number P040553AA Sample number(s) 4219187 <br /> Ethanol 111 109 41-155 2 30 <br /> di-Isopropyl ether 99 99 75-130 0 30 <br /> Ethyl t-butyl ether 99 98 78-119 1 30 <br /> t-Amyl methyl ether 99 99 77-117 1 30 <br /> t-Butyl alcohol 100 94 51-147 5 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 />