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09" <br />Lancaster <br />Laboratories <br />Analysis <br />Report <br />'e4A Now Holland Pike, PO Box 12426, Lancasler, PA 17605-2425 •717-656-2300 Fax: 717-65r,2681 - www.lancasteriabs.com <br />Page 2 of 6 <br />Quality Control Summary <br />Client Name. ChevronTexaco <br />Group Number: 850519 <br />Reported: 05116/03 at 09:54 AM <br />Laboratory Compliance Quality Control <br />Blank Blank Report LCS LCSD LCS/LCSD <br />Analysis Name <br />Result MDL Units %REC %REC Limits <br />RPD RPD Max <br />t -Butyl alcohol <br />N.D. 5. ug/1 93 53-147 <br />Benzene <br />N.D. 0.5 ug/l 93 85-117 <br />1,2-Dichloroethane <br />N.D. 0.5 ug/l 106 77-132 <br />Toluene <br />N -D- 0.5 u9/1 97 85-115 <br />1,2-Dibromoethane <br />N.D. 0.5 ug/1 95 81-114 <br />Ethylbenzene <br />N.D. 0-5 ug/1 95 82-119 <br />Xylene (Total) <br />N.D. 0.5 ug/l 98 84-120 <br />Sample Matrix Quality Control <br />MS MSD MS/MSD RPD BAG DUP <br />DUP Dup <br />RPD <br />Analysis Name <br />%REC %REC Limits RPD MAX Conc Conc <br />RPD Max <br />Batch number. 031250018A <br />Sample number(s): 4037443-4037462 <br />Methanol (by Direct Injection) <br />100 104 78-116 4 20 <br />Batch number: 031250020A <br />Sample number(s): 4037463-4037471 <br />Methanol (by Direct Injection) <br />204 113 78-216 13 20 <br />number: 03125A07A <br />Sample number(s): 4037443 <br />�-,-GRO - Waters <br />117 70-130 <br />Batch number: 03125A07B <br />Sample number(s): 4037442,4037444-4037452 <br />TPH-GRO - Waters <br />117 70-130 <br />Batch number: 03125A07C <br />Sample number(c): 403'7453-4037458 <br />TPH-GRO - Waters <br />117 70-130 <br />Batch number: 0312SA56A <br />Sample number(s): 4037459-4037462,4037464-4037471 <br />TPH-GRO - Waters <br />116 70-130 <br />Batch number: 03125A56B <br />Sample number(s): 4037463 <br />TPH-GRO - Waters <br />126 70-130 <br />Batch number. P031271AA <br />Sample number(s): 4037445-4037453 <br />Ethanol <br />52 51 34 -163 3 30 <br />Methyl Tertiary Butyl Ether <br />95 96 69-134 2 30 <br />di -isopropyl ether <br />102 104 2 30 <br />Ethyl t -butyl ether <br />99 106 73-123 7 30 <br />t -Amyl methyl ether <br />93 96 77-117 3 30 <br />t -Butyl alcohol <br />65 61 39-155 7 30 <br />Benzene <br />100 101 83-128 1 30 <br />1,2-Dichloroethane <br />ill 113 73-1345 1 30 <br />Toluene <br />106 104 83-127 2 30 <br />1,2-Dibroatoethane <br />100 98 78-120 2 30 <br />Ethylbenzene <br />101 913 82-134 2 30 <br />Xylene (Total) <br />100 99 82-130 0 30 <br />Batch number: P031281AA <br />Sample number(s): 4037442-4037444,4037469-4037471 <br />Ethanol <br />106 106 34-163 1 30 <br />Methyl Tertiary Butyl Ether <br />94 92 69-134 3 30 <br />di -Isopropyl ether <br />100 98 75-130 2 30 <br />Ethyl t -butyl ether <br />97 92 73-123 5 30 <br />t -Amyl methyl ether <br />92 89 77-117 4 30 <br />Outside of specification <br />The result for one or both determinations was less than five times the LOQ. <br />,-I The background result was more than four times the spike added. <br />