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American Environmental Network <br /> PAGE 11 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020. 5030 GCFID <br /> AEN JOB NO 9706175 <br /> INSTRUMENT H <br /> MATRIX WATER <br /> Surrogate Standard Recovery Summary <br /> Percent Recovery <br /> Date <br /> Analyzed Client Id Lab Id F1uorobenzene <br /> 06/17/97 MW-1 01 92 <br /> 06/17/97 MW-2 02 96 <br /> 06/17/97 MW-3 03 92 <br /> 06/17/97 MW-8 04 96 <br /> 06/17/97 MW-10 05 98 <br /> 06/18/97 MW-12 06 104 <br /> QC Limits 70-130 <br /> DATE ANALYZED 06/18/97 <br /> SAMPLE SPIKED 9706048-02 <br /> INSTRUMENT H <br /> Matrix Spike Recovery Summary <br /> QC Li mll'1 is <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> Benzene 16 7 104 3 85-109 17 <br /> Toluene 59 3 99 5 87-111 16 <br /> Hydrocarbons <br /> as Gasoline 500 98 6 66-117 19 <br /> Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit <br />