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1 <br /> A4ED-Tox <br /> ASSOCIATES INC <br />' PAGE 54 OF 61 <br /> t DATE ANALYZED: 05/07/91 MED-TOX JOB NO: 9105035 <br /> SAMPLE SPIKED: 9105035-3A <br /> CLIENT PROD. ID: 10246.19 INSTRUMENT: F <br /> MATRIX SPIKE RECOVERY SUMMARY <br /> METHOD TPHBTW <br /> 5030 w/GCFID/8020 <br />' Spike Sample MS NSD Average <br /> Conc. Result Result Result Percent <br /> ANALYTE OWL) (ug/L) (ug/L) (ug/L) Recovery RPD <br /> Benzene 18 8 ND 19.1 19.9 101.6 0.0 <br /> Toluene 54 6 ND 55.9 55.5 102-0 0.7 <br /> Hydrocarbons <br />' as Gasoline 520 ND 495 497 95.4 0.4 <br /> CURRENT QC LIMITS (Revised 04/30/91) <br />' Analyte Percent Recovery RPD <br /> Benzene (75.6-118.0) 12.6 <br />' Toluene (78.2-116.8) 10.9 <br /> Gasoline (66.3-114.0) 14.4 <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br />' ND = Not Detected <br />