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Analysis Report <br /> A , <br /> Lancaster Laboratories <br /> Where quality is a science <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 825985 <br /> Reported 10/22/02 at 05 49 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRG DUP DUP Dup <br /> RPD <br /> _Analy6is Name $REC %REC Limits RPD MAX Conc Conc RPD Marc <br /> Benzene 109 109 78-134 0 30 <br /> 1,2-DichIoroethane 105 105 73-136 0 30 <br /> Toluene 110 110 83-127 0 30 <br /> 1,2-Dibromoethane 94 95 78-120 1 30 <br /> Ethylbenzene 113 113 82-134 0 30 <br /> Xylene (Total) 114 113 82-130 0 30 <br /> Batch number N022851AB Sample number(s) 3914613,3914617-3914618 <br /> Ethanol 74 75 34-163 2 30 <br /> Methyl t-butyl ether 94 98 69-134 3 30 <br /> dY-Isopropyl ether 105 106 68-133 1 30 <br /> Ethyl t-butyl ether 92 95 73-123 3 30 <br /> t-Amyl methyl ether 90 92 69-118 1 30 <br /> t-Butyl alcohol 57 69 51-148 3 30 <br /> Benzene 109 109 78-134 0 30 <br /> 1,2-Dlchloroethane 105 105 73-136 0 30 <br /> Toluene 110 110 83-127 0 30 <br /> 1,2-Dabromoethane 94 95 78-120 1 30 <br /> Ethylbenzene 113 113 82-134 0 30 <br /> Xylene (Total) 114 113 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02282A56A <br /> Trifluorotoluene-F <br /> 3914611 94 <br /> 3914612 81 <br /> 3914613 92 <br /> 3914614 96 <br /> 3914615 91 <br /> 3914616 94 <br /> 3914617 90 <br /> 3914618 79 <br /> Blank 92 <br /> LCS 94 <br /> LCSD 103 <br /> MS 101 <br /> Limits 57-146 <br /> Analysis Name Methanol and Ethanol <br /> Batch number 022870003A <br /> Acetone <br /> 3914612 98 <br /> 3914613 97 <br /> 3914614 95 <br /> 3914615 96 <br /> 3914616 99 <br /> *-Outside of specification <br /> {1} The result for one or both determinations was less than five times the LOQ <br /> i�(2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> MEMBER 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717-656 2300 Fax 717 656 2681 2216 Rev 9/11/00 <br />