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r <br />` Lancaster <br />Laboratories Analysis Rep ort <br />2425 New Holland Pike, Pp Box 12425, Lancaster, PA 1 7605-2 42 5 • 717-656-2300 Fax; 717-656-2681 - W Ww, lancaSterlabS.Corn <br />Page I of 3 <br />i <br />Quality Control Summary <br />Client Name: ChevronTexaco Group Number: 891736 <br />Reported: 04/23/04 at 08:50 AM r <br />Matrix QC may not be reported if site-specific QC samples were not <br />submitted. In these situations, to demonstrate precision and accuracy at <br />a batch IeveI, a LCS/LCSD was performed, unless otherwise specified in the <br />method. <br />Analye imams <br />Batch number: 041060023A <br />Methanol (by Direct Injection) <br />t <br />Batch number: 04106AOSA <br />TPH-GRO - Water's <br />Batch number: 04106AOBB <br />TPH-GRO - Waters <br />Hatch number: P041111AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />di -isopropyl ether <br />Ethyl t -butyl ether <br />Laboratory Compliance Quality Control <br />Blank <br />Analysis Name <br />LCSD <br />Batch number: 041060023A <br />Result <br />Methanol (by Direct Injection) <br />%REC <br />Batch number: D4106A08A <br />Sample <br />TPH-GRO - Waters <br />„' <br />Batch number: 0410GAOSE <br />N.D. <br />TPH-GRO - Waters <br />Batch number: P041111AA <br />Ethanol <br />76-119 <br />Methyl Tertiary Butyl Ether <br />number(s): 4252527 <br />di -isopropyl ether <br />Ethyl t -butyl ether <br />50. ug/l 97 <br />t -Amyl methyl ether <br />Ft <br />-Butyl alcohol <br />number(s): 4252528-4252530 <br />Benzene <br />1,2-Dichloroethane <br />S0. ug/l 97 <br />Toluene <br />70-130 <br />1,2-Dibromoethane <br />number(s): 4252527-4252530 <br />Ethylbenzene <br />Xylene (Total) <br />Analye imams <br />Batch number: 041060023A <br />Methanol (by Direct Injection) <br />t <br />Batch number: 04106AOSA <br />TPH-GRO - Water's <br />Batch number: 04106AOBB <br />TPH-GRO - Waters <br />Hatch number: P041111AA <br />Ethanol <br />Methyl Tertiary Butyl Ether <br />di -isopropyl ether <br />Ethyl t -butyl ether <br />Laboratory Compliance Quality Control <br />Blank <br />Blank Report LCE <br />LCSD <br />LCS/LCSD <br />Result <br />MDL Units RBC <br />%REC <br />Limits <br />Sample <br />number(s); 4252527-4252530 <br />N.D. <br />200. ug/i 96 <br />76-119 <br />Sample <br />number(s): 4252527 <br />N.D. <br />50. ug/l 97 <br />124 <br />70-130 <br />Sample <br />number(s): 4252528-4252530 <br />N.D. <br />S0. ug/l 97 <br />124 <br />70-130 <br />Sample <br />number(s): 4252527-4252530 <br />N.D. <br />50. u9/1 95 <br />46-145 <br />N.D. <br />0.5 ug/l 101 <br />77-127 <br />N.D. <br />0.5 ug/l 95 <br />67-130 <br />N.D. <br />0.5 ug/l 96 <br />74-120 <br />N.D. <br />0.5 ug/l 101. <br />79-113 <br />N.D. <br />5. ug/1 112 <br />57-141 <br />N.D. <br />0-5 ug/1 101 <br />85-117 <br />N.D. <br />0.5 ug/l 97 <br />77-132 <br />N.D. <br />0.5 ug/l 95 <br />85-115 <br />N.D. <br />0.5 ug/1 94 <br />81-114 <br />N.D. <br />0.5 ug/l 96 <br />82-119 <br />N.D. <br />0.5 u9/1 97 <br />84-120 <br />Sample Matrix Quality <br />Control <br />MS <br />MSD MS/MSD RPD <br />BKQ <br />DUP <br />%REC <br />%REC Lip ita RPP MAX <br />Conc <br />Qona <br />Sample <br />number(B): 4252527-4252530 <br />88 <br />88 72-122 0 20 <br />Sample <br />number(s): 4252527 <br />126 <br />63-154 <br />Sample <br />number(s): 4252528-4252530 <br />126 <br />63-154 <br />Sample <br />number(s): 4252527-4252530 <br />112 <br />115 41-155 3 30 <br />102 <br />102 69-134 0 30 <br />98 <br />96 75-130 0 30 <br />99 <br />99 78-119 0 30 <br />*- Outside of specification <br />{ I ) The result for one or bath determinations was less than five times the LOQ <br />(--',2) The background result was more than four tunes the spike added. <br />RPD RPD Max <br />24 30 <br />24 30 <br />DUP Dup RPD <br />RPD max <br />