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J41 AnalyticalTechnologies,lnc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL <br /> MSMSD <br /> Page 9 <br /> Test : MOD EPA 8015-CDOHS (FUEL HYDROCARBONS/BT%E) ATI I.D. 502225 <br /> MSMSD # : 73349 Date Extracted: N/A <br /> Client : ALISTO ENGINEERING Date Analyzed 25-FEB-95 <br /> Sample Matrix WATER <br /> Project# : G3'1`7901710=037=037003 REF—I.:D:. :-502225-02 <br /> Project Name: BP SITE #11192/STOCKTONI, CA. <br /> ------------------------------------------- -- <br /> Parameters Units Sample Conc Spiked % Dup Dup RPD <br /> Result Spike Sample Rec Spike $ Rec <br /> L <br /> -------------------------------- -- <br /> -_-------- ------------ <br /> BENZENE UG/L <0.50 5.0 4.6 92 4 .8 96 4 <br /> TOLUENE UG/L <0.50 5.0 4.4 $8 4.7 94 7 <br /> 1 Recovery = (Spike Sample Result - Sample Result)*100/Spi.ke Concentration <br /> RPD (Relative % Difference) = (Spiked Sample Result - Duplicate Spike Result)*100/Average: Result <br /> • <br />