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-------------- <br /> 1h AnalyticalTechnologies,lnc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL <br /> BLANK SPIKE ^ <br /> Page 25 <br /> Test MOD EPA 803.5-CI]OHS (FUEL HYDROCARBONS/BT%E) ATI I.D. 502287 <br /> Blank Spike #: 54840 Date Extracted: N/A <br /> Client ALISTO ENGINEERING Date Analyzed 02-MAR-95 <br /> Project # G317905/10-151-03/003 Sample Matrix WATER <br /> Project Name : BP SITE #11195/LATHROP, CA. <br /> ------------------------------------------------------------------------------------------------ <br /> Parameters Units Blank Spiked Spike % <br /> Result Sample Conc. Rec <br /> ------------------------------------------__------------------------------------------------------- <br /> BENZENE UG/L <0.50 4.7 5.0 94 <br /> TOLUENE UG/L <0.50 4.6 5.0 92 <br /> % Recovery = (Spike Sample Result - Sample Result)*100/Spike Concentration <br /> RPD (Relative % Difference) _ (Spiked Sample - Blank Result)*100/Average Result <br />