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AAna lyticalTechnoiogies,Inc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL <br /> MSMSD <br /> Page 21 <br /> Test MOD EPA 8015-CDOES (FUEL HYDROCARBONS/BT%E) ATI I.D. 502287 <br /> MSMSD # 73486 Date Extracted: N/A <br /> Client ALISTO ENGINEERING Date Analyzed 28-FEB-95 <br /> Sample Matrix WATER <br /> Project # 6317905/10-151-03/003 REF I.D. 502280-01 <br /> Project Name: BP SITE #11195/LATHROP, CA. <br /> ----------------------------------------- <br /> Parameters Units Sample Conc Spiked % Dup Dup RPD <br /> Result Spike Sample Rec Spike % Rec <br /> -------------------------------------------------------------------------------------------------- <br /> BENZENE UG/L <0.50 5.0 4.6 92 4.7 94 2 <br /> TOLUENE UG/L <0.50 5.0 4.5 90 4.6 92 2 <br /> % Recovery = (Spike Sample Result - Sample Result)*100/Spike Concentration <br /> RPD (Relative % Difference) _ (Spiked Sample Result - Duplicate Spike Result)*100/Average Result <br /> I <br /> i <br /> I <br /> E <br />