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Pace Analytical Services, Inc <br /> aceAnalX cal T� Ho tonGemT Avenue <br /> Houston rx 77058 <br /> Phone 281488 1810 <br /> www pacelahs com QUALITY CONTROL DATA Fax 281488 4661 <br /> • <br /> Lab Project Number 8519449 <br /> Client Project ID BP Site# 11193 <br /> QC Batch 48433 QC Batch Method See analytical meth <br /> Analysis Method EPA 8021 Analysis Description SW8021 Aromatics Water <br /> Associated Lab Samples 851673527 851673528 851673529 851673530 851673531 <br /> 851673532 851673533 851673534 851673535 851673536 <br /> METHOD BLANK 851675119 <br /> Associated Lab Samples <br /> 851673527 851673528 851673529 851673530 851673531 851673532 851673533 <br /> 851673534 851673535 851673536 <br /> Method <br /> Blank <br /> Parameter Units Result PRL Footnotes <br /> Benzene ug/1 ND 0 5 <br /> Ethylbenzene ug/l ND 0 5 <br /> Toluene ug/1 ND 0 5 <br /> Xylene (Total) ug/l ND 0 5 <br /> Methyl tert butyl ether ug/l ND 0 5 <br /> 1 4 Di 11uorobenzene (S) % 95 <br /> 4 Bromofluorobenzene (S) X 109 <br /> MATRIX SPIKE & MATRIX SPIKE DUPLICATE 851675120 851675121 Matrix Matrix Spike <br /> Spike Spike Spike Sp Dup Dup <br /> Parameter Units 851673523 Conc Result X Rec Result 9 Rec RPD Footnotes <br /> Benzene ug/l 0 50 00 51 21 102 49 31 99 4 <br /> Ethylbenzene ug/l 0 50 00 52 82 106 51 46 103 3 <br /> Toluene ug/l 0 50 00 51 1B 102 49 65 99 3 <br /> Xylene (Total) ug/l 0 350 00 164 9 110 161 7 108 2 <br /> Methyl tert butyl ether ug/l 0 50 00 54 64 109 52 19 104 5 <br /> 1 4 Difluorobenzene (S) 98 98 <br /> 4 Bromofluorobenzene (S) 112 ill <br /> LABORATORY CONTROL SAMPLE 851675122 <br /> Spike LCS Spike <br /> Parameter Units Conc Result X Rec Footnotes <br /> Benzene ug/l 50 47 45 95 <br /> Ethylbenzene ug/l 50 51 16 102 <br /> Date 02/05/01 Page 12 <br /> ! "REPORT OF LABORATORY ANAILYsIs <br /> This report shall not be reproduced, except in full, <br /> without the written consent of Pace Analytical Services, Inc <br />