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f] <br /> " Pace Analytical Services, inc <br /> ace Analytical"' Houou toi)GerT Avenue <br /> ston TX 77058 <br /> www pacelabs com QUALITY CONTROL DATA Phone 2814881810 <br /> Fax 281488 4661 <br /> f <br /> Lab Project Number 8521561 <br /> Client Project ID BP Site#11194 <br /> QC Batch 53401 QC Batch Method See analytical meth <br /> Analysis Method EPA 8021 Analysis Description SW8021 Aromatics Water <br /> Associated Lab Samples 851693826 851693829 851693830 851693831 851693832 <br /> 851693833 851693834 851693835 851693836 851693837 <br /> 851693838 <br /> METHOD BLANK 851694732 <br /> Associated Lab Samples <br /> 851693826 851693829 851693830 851693831 851693832 851693833 851693834 <br /> 851693835 851693836 851693837 851693838 <br /> Method <br /> Blank <br /> Parameter Units Result PRL Footnotes <br /> Benzene ug/l ND 0 5 <br /> Ethylbenzene ug/l ND 0 5 <br /> Toluene ug/1 ND 0 5 <br /> Xylene (Total) ug/l NO 1 5 <br /> ethyl tert butyl ether ug/l ND 0 5 <br /> 1 4 Difluorobenzene (S) X 98 <br /> 4 Bromofluorobenzene (S) X 99 <br /> MATRIX SPIKE & MATRIX SPIKE DUPLICATE 851695118 851695119 Matrix Matrix Spike <br /> Spike Spike Spike Sp Dup Dup <br /> Parameter Units 851693831 Conc Result X Rec Result X Rec RPD Footnotes <br /> Benzene ug/1 0 50 00 44 99 90 45 92 92 2 <br /> Ethylbenzene ug/T 0 50 00 56 49 113 57 53 115 2 <br /> Toluene ug/1 1 466 50 00 53 05 103 54 00 105 2 <br /> Xylene (Total) ug/l 0 100 00 117 1 117 118 7 119 1 <br /> Methyl tert butyl ether ug/l 0 2393 50 00 43 34 86 43 01 86 1 <br /> 1 4 Difluorobenzene (S) 100 100 <br /> 4 Bromofluorobenzene (S) 100 99 <br /> LABORATORY CONTROL SAMPLE 851694733 <br /> Spike LCS Spike <br /> Parameter Units Conc Result X Rec Footnotes <br /> Benzene ug/1 50 43 42 87 <br /> Date 06/05/01 Page 19 <br /> REPORT OF LABORATORY ANALYSIS <br /> This report shall not be reproauced except in full <br /> without the written consent of Pace Anawticai Services inc <br />