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Aniericara Environmental Netn�ork <br /> PAGE QR-4 <br /> QUALITY CONTROL DATA <br /> METHOD: EPA 8020, 5030 GCFID <br /> AEN JOB NO: 9712296 <br /> INSTRUMENT: F <br /> MATRIX: WATER <br /> Surrogate Standard Recovery Summary <br /> Percent Recovery <br /> Date <br /> Analyzed Client Id. Lab Id. Fluorobenzene <br /> 12/27/97 MW-5 01 97 <br /> 12/27/97 MW-4 02 97 <br /> 12/27/97 MW-1 03 97 <br /> 12/27/97 MW-3 04 96 <br /> QC Limits : 70-130 <br /> DATE ANALYZED: 12/27/97 <br /> SAMPLE SPIKED: LCS <br /> INSTRUMENT: F <br /> Laoratory Control Sample Recovery <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> Benzene 100 85 2 70-130 20 <br /> Toluene 100 95 3 70-130 20 <br /> Ethylbenzene 100 100 3 70-130 20 <br /> Total Xylenes 300 106 2 70-130 20 <br /> Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit. <br /> *** END OF REPORT *** <br /> i <br />