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*- Outside of specification <br />(1) 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 />F "--' <br />Lancaster <br />Laboratories <br />Analysis <br />Report <br />2425 New Holland Pike, PO Box 12425, Lancaster, PA 176052425 •717-656-2300 <br />Fax: 717-656-2681 • W W W.lancasterlabs.com <br />Page 2 of 3 <br />Quality <br />Control Summary <br />t <br />Client Name: ChevronTexaco <br />Group Number: 881929 <br />r <br />Reported: 01/29/04 at 01;12 PM <br />Sample Matrix Quality Control <br />MS <br />MSD M3/MSD RPD BKG DVP <br />DUR Dup <br />Analysis Name %REC <br />1,2-Dichloroethane <br />%RRC - Limits RPD t MAX Conc Conc <br />RPD <br />RPD Max - <br />102 <br />Toluene <br />99 73-136 3 30 <br />M <br />101 <br />1,2-Dibromoethane 85 <br />98 83-127 3 30 <br />83 <br />Ethylbenzene 101 <br />78-120 2 30 <br />100 82-129 1 30 <br />Xylene (Total} 101 <br />99 82-130 1 30 <br />E.' <br />Batch number: N040222AA Sample number(s): 4201619-4201622 <br />Ethanol 66 <br />38-149 <br />Methyl Tertiary Butyl Ether 98 <br />69-134 <br />di -Isopropyl ether 99 <br />75-130 <br />l <br />Ethyl t -butyl ether 101 <br />78-119 <br />t -Amyl methyl ether 101 <br />77-117 <br />t -Butyl alcohol 73 <br />44-150 <br />Benzene 104 <br />83-128 <br />1,2-Dichloroethane 100 <br />73-136 <br />Toluene 102 <br />83-127 <br />1,2-Dibromoethane 90 <br />78-120 <br />Ethylbenzene 103 <br />82-129 <br />xylene (Total) 102 <br />82-130 <br />f F <br />_ <br />Surrogate Quality Control <br />r^ <br />Analysis Name: TPH-GRO - Waters <br />Batch number: 04021AOBC <br />Trifluorotoluene-P <br />4201618 109 <br />ry <br />4201619 110 <br />4201620 112 <br />F6 <br />4201621 111 <br />4201622 111 <br />Blank 111 <br />LC$ 115 <br />MS 117 <br />MSD 118 <br />Limits: 57-146 <br />Analysis Name: Methanol and Ethanol <br />Batch number: 040220012A <br />Acetone <br />4201618 125 <br />4201619 119 <br />4201620 115 <br />4201621 121 <br />4201622 116 <br />Blank 126 <br />LCS 120 <br />MS 121 <br />MSD 118 <br />*- Outside of specification <br />(1) 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 />F "--' <br />