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LAnalyticalTechnologies,lnc. <br /> GAS CHROMATOGRAPHY - QUALITY CONTROL /rte <br /> BLANK SPIKE <br /> Page 9 <br /> Test EPA 8010 (HALOGENATED VOLATILE ORGANICS) ATI I.D. 502287 <br /> Blank Spike #: 54788 Date Extracted: N/A <br /> Client ALISTO ENGINEERING Date Analyzed 27-FEB-95 <br /> Project # 6317905/10-151-03/003 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 /> CHLOROBENZENE / <0.50 3.5 4.0 88 <br /> CHLOROFORM. UG/L <0.20 1.8 2.0 90 <br /> 1,1-DICHLOROETHENE UG/L <0.20 1.8 2.0 90 <br /> TETRACHLOROETHENE UG/L <0.20 1.9 2.0 95 <br /> TRICHLOROETHENE UG/L <0.20 1.8 2.0 90 <br /> % Recovery = (Spike Sample Result - Sample Result)*100/Spike Concentration <br /> RPD (Relative % Difference) = (Spiked Sample - Blank Result)*100/Average Result <br /> r3 <br />