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American Environmental Network <br /> PAGE 13 <br /> QUALITY CONTROL DATA <br /> METHOD EPA 8020, 5030 GCFID <br /> AEN JOB NO 9706042 <br /> INSTRUMENT H <br /> MATRIX SOIL <br /> Surrogate Standard Recovery Summary <br /> Date Percent Recovery <br /> Analyzed Client Id Lab Id Fluorobenzene <br /> 06/10/97 SB4-15 01 100 <br /> 06/10/97 SB4-40 02 101 <br /> 06/11/97 SB4-45 03 99 <br /> 06/11/97 SB4-50 04 99 <br /> 06/11/97 SB4-55 05 94 <br /> 06/11/97 SB5-40 07 100 <br /> 06/11/97 SB5-45 08 100 <br /> 06/11/97 S65-50 09 104 <br /> 06/11/97 SBS-61 10 87 <br /> QC Limits 70-130 <br /> DATE ANALYZED 06/11/97 <br /> SAMPLE SPIKED 9706042-01 <br /> INSTRUMENT H <br /> Matrix Spike Recovery Summary <br /> QC Limits <br /> Spike <br /> Added Percent Percent <br /> Analyte {ug/kg} Recovery RPD Recovery RPD <br /> Benzene 16 7 102 4 79-113 20 <br /> Toluene 59 3 100 3 84-110 20 <br /> Hydrocarbons <br /> as Gasoline 500 101 3 60-126 20 <br /> Daily method blanks for all associated analytical runs showed no contamination <br /> at or above the reporting limit <br />