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Ana lyticalTechnologies,Inc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL . <br /> MSMSD <br /> Page 7 <br /> Test MOD EPA 8015-CDOHS (FUEL HYDROCARBONS/BTXE) ATI I.D. 504253 <br /> MSMSD # 75312 Date Extracted: N/A <br /> Client ALZSTO ENGINEERING Date Analyzed 02-MAY-95 <br /> Sample Matrix : WATER <br /> P.roj.ect_# .—G3]79.01/_10=03.7.`0.3=0.04 REF_I_._D.. :=50425.8._0.1 <br /> Project Name: BP SITE#11192/COUNTRY CLUB BLVD, STOCKTON CA <br /> ------------------------------------------------------------ ------------------------------------ <br /> Parameters Units Sample Conc Spiked % Dup Dup RPD <br /> Result Spike Sample Rec Spike o Rec <br /> ------------------------------------------------------------------------------------------------- <br /> BENZENE UG/L t0. 50 5.0 5 .4 108 5.3 106 2 <br /> TOLUENE UG/L <0. 50 5.0 5 .3 106 5.3 106 0 <br /> Recovery = (Spike Sample Result - Sample Result) *100/Spike Concentration <br /> RPD (Relative t Difference) = (Spiked Sample Result - Duplicate Spike Result) *100/Average Result <br />