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Lancaster <br /> Laboratories Analysis Report <br /> 5 New Holland Pike PO Box 12425 Lancaster PA 17605 2425-717 656 2300 Fax 717-656-2681•www laneastetlabs com <br /> Page l of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 882764 <br /> Reported 02/09/04 at 02 32 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result ML Units %REC %REC Limits RPD RPD Max <br /> Batch number 040290023A Sample number(s) 4205521-4205528 <br /> TPH - DRO CA LUPT (Waters) N D 50 ug/l 81 75 61-126 8 20 <br /> Batch number 040290028A Sample number(s) 4205525-4205528 <br /> Methanol (by Direct Injection) N D 1000 ug/l 112 78-114 <br /> Batch number 0403OA07B Sample number(s) 4205520-4205521 <br /> TPH-GRO - Waters N D 50 ug/l 98 70-130 <br /> Batch number 0403OA07C Sample number(s) 4205522-4205529 <br /> TPH-GRO - Waters N D 50 ug/l 98 70-130 <br /> Batch number 04033212601A Sample number(s) 4205529 <br /> TRPH 418 1 N D 0 40 mg/1 98 94 54-113 3 14 <br /> Batch number P040292AA Sample numbers) 4205520-4205524,4205529 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 92 77-127 <br /> Benzene N D 5 ug/l 89 85-117 <br /> Toluene N D 5 ug/1 90 85-115 <br /> Ethylbenzene N D 5 ug/l 90 62-119 <br /> ylene (Total) N D 5 ug/l 90 84-120 <br /> *tch number P040302AA Sample number(s) 4205525-4205528 <br /> Ethanol N D 500 ug/l 87 46-145 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 88 77-127 <br /> di-Isopropyl ether N D 2 ug/l 95 67-130 <br /> Ethyl t-butyl ether N D 2 ug/l 92 74-120 <br /> t-Amyl methyl ether N D 2 ug/l 89 79-113 <br /> t-Butyl alcohol N D 100 ug/1 96 57-141 <br /> Benzene N D 5 ug/l 87 85-117 <br /> 1,2-Dichloroethane N D 2 ug/l 95 77-132 <br /> Toluene N D 5 ug/l 88 85-115 <br /> 1,2-Dibromoethane N D 2 ug/l 87 81-114 <br /> Eth lbenzene N D 5 ug/1 89 82-119 <br /> Xylene (Total) N D 5 ug/1 88 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 040290028A Sample numbers) 4205525-4205528 <br /> Methanol (by Direct Injection) 112 108 73-117 4 20 <br /> Batch number 04030AD78 Sample number(s) 4205520-4205521 <br /> TPH-GRO - Waters 106 106 63-154 0 30 <br /> Batch number 0403OA07C Sample number(s) 4205522-4205529 <br /> TPH-GRO - Waters 106 106 63-154 0 30 <br /> Batch number 04033112601A Sample number(s) 4205529 N D N D 10 (1) 34 <br /> TRPH 418 1 <br /> *-Outside of specification <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 />