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AEN JOB NO: 9705336 <br />INSTRUMENT: H <br />MATRIX: SOIL <br />American Environmental Network <br />QUALITY CONTROL DATA <br />METHOD: EPA 8020, 5030 GCFID <br />Surrogate Standard Recovery Summary <br />PAGE 10 <br />Percent Recovery <br />Date <br />Analyzed Client Id. Lab Id.-- Fluorobenzene <br />05/31/97 DP -13 01 99 <br />05/29/97 DP -16 02 99 <br />QC Limits: 70-130 <br />DATE ANALYZED: 05/31/97 <br />SAMPLE SPIKED: 9705336-01 <br />INSTRUMENT: H <br />Matrix Spike Recovery Summary <br />Daily method blanks for all associated analytical runs showed no contamination <br />at or above the reporting limit. <br />QC Limits <br />Spike <br />Added <br />Percent <br />Percent <br />Analyte <br />(ug/kg) <br />Recovery <br />RPD <br />Recovery <br />RPD <br />Benzene <br />16.7 <br />98 <br />8 <br />79-113 <br />20 <br />Toluene <br />59.3 <br />105 <br />1 <br />84-110 <br />20 <br />Hydrocarbons <br />as Gasoline <br />500 <br />106 <br />2 <br />60-126 <br />20 <br />Daily method blanks for all associated analytical runs showed no contamination <br />at or above the reporting limit. <br />