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1 <br /> MED-Tox <br /> ASSOCIATES INC <br />' PAGE 55 OF 61 <br />' DATE ANALYZED: 05/08/91 MED-TOX JOB NOS: 9105036, <br /> SAMPLE SPIKED: 9105037-1A 9105037 <br />' CLIENT PROJ. ID: 10246.19 INSTRUMENT: F <br />' MATRIX SPIKE RECOVERY SUMMARY <br /> METHOD TPHBTW <br />' 5030 w/GCFID/8020 <br /> Spike Sample MS MSO Average <br /> Conc. Result Result Result Percent <br /> ANALYTE (ug/L) (ug/L) (ug/L) (ug/L) Recovery RPO <br /> Benzene 18.0 NO 19.2 18.4 104.4 4.3 <br /> Toluene 52.2 NO 55.2 53.4 104.0 3.3 <br /> Hydrocarbons <br /> as Gasoline 520 NO 494 487 94.3 1.4 <br />' CURRENT Q£ 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 /> 1 <br /> tMS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br />' RPD = Relative Percent Difference <br /> ND = Not Detected <br />