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Lancaster <br /> Laboratories Analysis Report <br /> New Holtand Pike,PO Bax 12425,Lancaster,PA 17605-2425•717-656-2300 flax:717.656-2681•www.lancasteriabs.com <br /> Page 1 of 4 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 882392 <br /> Reported: 01/30/04 at 12 :40 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL units %REC %REC Limits RPD RPD Max <br /> Batch number: 040240003A Sample number(s) : 4204044-4204048 <br /> Total TPH N.D. 40. ug/l 95 99 61-129 4 20 <br /> TPH Motor Oil C16-C36 N.D. 40. ug/l <br /> Batch number: 040250003A Sample number(s) : 4204044-4204048 <br /> TPH - DRO CA LUFT (Waters) N.D. 50, ug/l 90 89 61-126 1 26 <br /> Batch number: 040260006A Sample number(s) : 4204044-4204048 <br /> Methanol (by Direct Injection) N.D. 1000. ug/l 104 78-114 <br /> Batch number: 04027A56A Sample numbers) 4204044-4204048 <br /> TPH-GRO - Waters N.D. 50. ug/l 93 113 70-130 19 30 <br /> Batch number: 0402BA08A Sample number(s) : 4204043 <br /> TPH-GRO - Waters N.D. 50, ug/3 99 70-130 <br /> Batch number: P040272AA Sample number(s) : 4204044-4204045 <br /> Ethanol N.D. 500. ug/l 114 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 2. ug/l 97 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 99 67-130 <br /> *yl t-butyl ether N.D. 2. ug/l 98 74-120 <br /> myl methyl ether N.D. 2. ug/1 96 79-113 <br /> utyl alcohol N.D. 100. ug/l 103 57-141 <br /> Benzene N.D. .5 ug/l 94 85-117 <br /> 1,2-Dichloroethane N.D. 2. ug/l 100 77-132 <br /> Toluene N.D. .5 ug/l 94 85-115 <br /> 1,2-Dibromoethane N.D. 2. ug/l 96 81-114 <br /> Ethylbenzene N.D. .5 ug/l 94 82-119 <br /> Xylene (Total) N.D. .5 ug/l 94 64-120 <br /> Batch number: P040281AA Sample number(s) : 4204043 <br /> Methyl Tertiary Butyl Ether N.D. 2. ug/l 92 77-127 <br /> Benzene N.D. .5 ug/l B9 85-117 <br /> Toluene N.D. .5 ug/l 89 85-115 <br /> Ethylbenzene N.D. .5 ug/l 89 82-119 <br /> Xylene (Total) N.D. .5 ug/l 88 84-120 <br /> Batch number: P040282AA Sample number(s) : 4204046-4204048 <br /> Ethanol N.D. 500. ug/l 108 46-145 <br /> Methyl Tertiary Butyl Ether N.D. 2. ug/l 96 77-127 <br /> di-Isopropyl ether N.D. 2. ug/l 101 67-130 <br /> Ethyl t-butyl ether N.D. 2. ug/l 99 74-120 <br /> t-Amyl methyl ether N.D. 2. ug/l 95 79-113 <br /> t-Butyl alcohol N.D. 100. ug/l 107 57-141 <br /> Benzene N.D. .5 ug/l 94 85-117 <br /> 1,2-Dichloroethane N.D. 2. ug/l 99 77-132 <br /> Toluene N.D. .5 ug/l 93 85-115 <br /> 1,2-Dibromoethane N.D. 2. ug/l 94 81-114 <br /> Ethylbenzene N.D. .5 ug/l 94 82-119 <br /> Xylene (Total) N.D. .5 ug/l 93 84-120 <br /> Sample Matrix Quality Control <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 />