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Pace Analyllca149rvl;es,4nc <br /> r <br /> 900 Gemini Avenue <br /> a Houston, TX 77058 <br /> ace Analytical <br /> www pacelabs cam QUALITY CONTROL DATA Phone 281488 4810 <br /> Fax 281488 4661 <br /> * <br /> Lab Project Number 8525495 <br /> Client Project ID BP Site# 11191 <br /> MATRIX SPIKE & MATRIX 6PIKEjDUPLICATE 851734462 851734463 <br /> re� 851734178 Spike MS MSD MS MSD <br /> Parameter Units Result Conc Result Result X Rec Rec RPD Footnotes <br /> Benzene ug/l 30870 500 00 9682 8978 0 0 8 1 1 <br /> Toluene ug/l 50330 500 00 12660 12050 0 0 5 1,1 <br /> Methhy t �ert butyl ether ug/l 0 500 00 550 2 591 4 110 118 7 <br /> Toluene d8 (S) 103 103 <br /> 4Bromofluorobenzene (S) 104 102 <br /> 1 2 Dichloroethane d4 (S) 101 106 <br /> Comments Analyte performances in the MS/MSD pair were poor due to the sample matrix Acceptable method performance has <br /> been demonstrated by the LCS recoveries (SW 8260) <br /> MATRIX SPIKE & MATRIX SPIKE DUPLICATE 851734464 851734465 <br /> 851734207 -Spike MS MSD MS MSD <br /> Parameter Units Result Conc Result Result % Rec % Rec RPD Footnotes • <br /> Benzene ug/l 0 50 00 52 83 52 69 106 105 0 <br /> Toluene ug/l 0 50 00 53 98 52 78 108 106 2 <br /> Methyl tert butyl ether ug/l 1802 50 00 1833 1880 62 156 3 1 2 1 2 <br /> Toluene-d8 (S) 104 103 <br /> 4 Bromofluorobenzene (S) 105 104 <br /> 1 2 Dichloroethane d4 (S) 109 114 <br /> Date 01/15/02 Page 5 <br /> REPORT OF LABORATORY ANALYSIS <br /> This report shall not be reproduced,except in full, <br /> without the written consent of Pace Analytical Services, Inc <br /> ,M FCCOA <br /> 4� C�� <br />