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n <br />'i <br />+Lancaster � - E <br />Laboratories Analysis Re ort 4 `p <br />2425 New Holland Pike, PO Box 12425, Lancaster. PA 17605-2425 •717-656-2300 Fax, 717-656-2681 • www.lancasteriabs.com <br />Page 2 of 3 <br />Quality Control Summary. 1. <br />Client Name: ChevronTexaco Group Number: 891736 <br />Reported: 04/23/04 at 08:50 AM <br />Sample Matrix Quality Control <br />Surrogate Quality Control <br />Analysis Name: Methanol and Ethanol <br />Batch number: 041060023A <br />Acetone <br />4252528 100 <br />4252529 102 <br />4252530 101 <br />Blank 103 <br />LCS 103 <br />MS 99 <br />MSD 99 <br />Limits. 80-132 <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 0410GA08A <br />Trifluorotoluene-F <br />4252527 106 <br />Blank 96 <br />LCS 106 <br />LCSD 104 <br />MS 105 <br />Limits: 57-146 <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 04106AO8B <br />Trifluorotoluene-P <br />4252520 <br />MS <br />MSD <br />MS/MSD <br />4252530 <br />RPD BKG DUP DUP <br />Analysis Name <br />%REC <br />REC <br />Limits <br />RPD <br />MAX Conc Conc RPD <br />t -Amyl methyl ether <br />103 <br />102 <br />77-117 <br />1 <br />30 <br />t -Butyl alcohol <br />108 <br />111 <br />51-147 <br />3 <br />30 <br />Benzene <br />107 <br />106 <br />83-128 <br />1 <br />30 <br />1,2-Dichloroethane <br />98 <br />99 <br />73-136 <br />2 <br />30 <br />Toluene <br />98 <br />101 <br />83-127 <br />2 <br />30 <br />1,2-Dibromoethane <br />96 <br />96 <br />78-120 <br />0 <br />30 <br />Ethylbenzene <br />. 99 <br />99 <br />82-129 <br />0 <br />30 <br />Xylene (Total) <br />101 <br />100 <br />82-130 <br />0 <br />30 <br />Surrogate Quality Control <br />Analysis Name: Methanol and Ethanol <br />Batch number: 041060023A <br />Acetone <br />4252528 100 <br />4252529 102 <br />4252530 101 <br />Blank 103 <br />LCS 103 <br />MS 99 <br />MSD 99 <br />Limits. 80-132 <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 0410GA08A <br />Trifluorotoluene-F <br />4252527 106 <br />Blank 96 <br />LCS 106 <br />LCSD 104 <br />MS 105 <br />Limits: 57-146 <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 04106AO8B <br />Trifluorotoluene-P <br />4252520 <br />106 <br />4252529 <br />101 <br />4252530 <br />103 <br />Blank <br />103 <br />LCS <br />106 <br />LCSD <br />104 <br />MS <br />105 <br />Limits: 57-146 <br />*- Outside of specification <br />(l ) 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 />Dup RPD <br />Max <br />