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11, IV_IV_1 iCLli2 Eiivii Netvt of n <br /> PAGE 7 <br /> • <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020 5030 GCFID <br /> AEN JOB NO 9712269 <br /> INSTRUMENT F H <br /> MATRIX WATER <br /> Surrogate Standard Recovery Summary <br /> Percent Recovery <br /> Date <br /> Analyzed Client Id Lab Id Fluorobenzene <br /> 12/22/97 MW-2 01 98 <br /> 12/22/97 MW-3 02 100 <br /> 12/24/97 MW-4 03 99 <br /> 12/29/97 MUNI WELL 04 97 <br /> . QC Limits 70-130 <br /> DATE ANALYZED 12/22/97 <br /> SAMPLE SPIKED 9712269-04 <br /> INSTRUMENT H <br /> Matrix Spike Recovery Summary <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPO <br /> Benzene 100 83 b 70-130 20 <br /> Toluene 100 91 5 70-130 20 <br /> Ethylbenzene 100 94 3 70-130 20 <br /> Total Xylenes 300 95 3 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 /> • <br />