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American E'nvit onmental Network <br /> PAGE 5 <br />' QUALITY.CONTROL DATA <br /> DATE ANALYZED: 10/12/93 AEN JOB NO: 9310028 <br />' SAMPLED SPIKED: 9309394-03C <br /> CLIENT PROJ. ID: 1107.07 INSTRUMENT: F <br /> MATRIX SPIKE RECOVERY SUMMARY <br />' METHOD: EPA 8020, 5030 GCFID <br /> (WATER MATRIX) <br />' Spike Sample Ns Mw Average <br /> Conc. Result Result Result Percent <br /> AYALTTE (ug/L) (ug/L) (ug/L) (up/L) Recovery RPD <br />' benzene 10 1 ND 8.9 9.2 89.6 3.3 <br /> Toluene 38 T ND 34.4 35.9 90 8 4.3 <br /> Hydrocarbons <br /> As Gasoline 500 ND 578 513 109.1 11.8 <br /> 1 <br /> CURRENT QC LIMITS (Revised 05/14/92) <br />' Analyte Percent Recovery RPD <br /> Benzene (81.4-115.3) 10.2 <br />' Toluene (85.3-112.4) 9.4 <br /> Gasoline (72.0-119.4) 12.3 <br /> MS - Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br /> ND = Not Detected <br /> *** END OF REPORT *** <br /> i <br />