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American Environmental Network <br /> PAGE 7 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020, 5030 GCFID <br /> AEN ,JOB NO 9805010 <br /> INSTRUMENT E, H <br /> MATRIX WATER <br /> Surrogate Standard Recovery Summary <br /> Percent Recovery <br /> Date <br /> Analyzed Client Id Lab Id Fluorobenzene <br /> 05/07/98 MW-7 01 99 <br /> 05/07/98 MW-6 02 98 <br /> 05/07/98 VW-1D 03 95 <br /> 05/12/98 VW-2D 04 94 <br /> QC Limits 70-130 <br /> 1 DATE ANALYZED 05/07/98 <br /> SAMPLE SPIKED LCS <br /> INSTRUMENT H <br /> Laboratory Control Sample Recovery <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> Benzene 200 104 7 70-130 20 <br /> Toluene 200 102 8 70-130 20 <br /> Ethylbenzene 200 101 9 70-130 20 <br /> Total Xylenes 600 102 9 70-130 20 <br /> Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit <br />