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American Environmental Network <br /> PAGE 16 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020, 5030 GCFID <br /> AEN JOB NO 9703241 <br /> DATE ANALYZED 03/21/97 <br /> SAMPLE SPIKED LCS <br /> INSTRUMENT E <br /> MATRIX WATER <br /> Laboratory Control Sample Recovery <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> Benzene 18 2 97 1 85-117 20 <br /> Toluene 61 0 97 1 84-120 20 <br /> Hydrocarbons <br /> Mas Gasoline 500 91 2 85-115 20 <br /> . Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit <br />