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Alan Environmental Network <br /> PAGE 4 OF 4 <br /> QUALITY CONTROL DATA <br /> DATE EXTRACTED: 06/24/93 AEN JOB NO: 9307001 <br /> DATE ANALYZED: 06/25/93 SAMPLE SPIKED: 9306141-03A <br /> CLIENT PROJ. ID: 1314 INSTRUMENT: B <br /> MATRIX SPIKE RECOVERY SUMMARY <br /> METHOD: EPA 8080 (PCBs) <br /> (SOIL MATRIX) <br /> Spike Sample Ms MSD Average <br /> Amount Result Result Result Percent <br /> COMPOUND (mg/kg) (mg/kg) (mg/kg) (mg/kg) Recovery RPD <br /> A1260 0.400 NO 0.437 0.431 108.5 1.4 <br /> CURRENT QC LIMITS <br /> Analyte Percent Recovery RPD <br /> A1260 (34-134) 25 <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br /> ND = Not Detected <br />