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` Amer scan Envirorzn7ental Netwoi k <br /> . PAGE 6 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020 5030 GCFID <br /> AEN JOB NO 9703238 <br /> INSTRUMENT E <br /> MATRIX WATER <br /> Surrogate Standard Recovery Summary <br /> Percent Recovery <br /> Date <br /> Analyzed Client Id Lab Id Fluorobenzene <br /> 03/20/97 CONVAULT 01 100 <br /> QC Limits 70-130 <br /> DATE ANALYZED 03/19/97 <br /> SAMPLE SPIKED 9703207-05 <br /> INSTRUMENT E <br /> Matrix Spike Recovery Summary <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> Benzene 18 2 98 7 85-109 17 <br /> Toluene 61 0 95 7 87-111 16 <br /> Hydrocarbon <br /> as Gasoline 500 94 1 66-117 19 <br />. Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit <br />