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ilk AnalyticolTechnologies,lnc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL <br /> BLANK SPIKE i <br /> Test MOD EPA 801.5-CDOHS (FUEL HYDROCARBONS/BTXE) ATI I.D. : 504253 Page 9 <br /> Blank Spike #: 56208 Date Extracted: N/A <br /> Client ALISTO ENGINEERING Date Analyzed : 01-MAY-95 <br /> Project # G317901/10-037-03-004 Sample Matrix WATER <br /> Project Name SP SITE411192/COUNTRY CLUB BLVD, STOCKTON CA <br /> ---------------------------------- <br /> Parameters Units Blank Spiked Spike % <br /> Result Sample Conc. Rec <br /> ----------------------------------- <br /> BENZENE UG/L <0.50 5.2 5.0 104 <br /> TOLUENE UG/L <0.50 5.3 5.0 106 <br /> Recovery = (Spike Sample Result - Sample Result) *100/Spike Concentration <br /> RPD (Relative t Difference) _ (Spiked Sample - Blank Result) *100/Average Result <br />