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American Environmental Network <br /> PAGE 18 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020, 5030 GCFID <br /> t AEN JOB NO 9605295 <br /> DATE ANALYZED 05/28/96 <br /> SAMPLE SPIKED 9605286-04 <br /> ' INSTRUMENT H <br /> Matrix Spike Recovery 5urr9ary <br /> QC Limits <br /> Spike Average <br /> t Added Percent Percent <br /> Analyte (ug/L) Recovery RPD Recovery RPD <br /> ' Benzene 22 2 93 3 85-109 17 <br /> Toluene 73 9 93 3 87-111 16 <br /> Hydrocarbons <br /> as Gasoline 500 120 2 66-117 19 <br /> 1 <br /> Daily method blanks for all associated analytical runs showed no contamination <br /> . at or above the reporting limit <br /> ' * END OF REPORT *** <br />