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rRIMUSUOH <br /> C=HV9 KO-T1tC�H CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> Wednesday,December 04,2002 <br /> TO- Mike Lukstc <br /> Port of Stockton <br /> 2201 W Washington St <br /> Stockton CA 95203 <br /> Aromatic Compound in Gasoline by GC/MS <br /> Sample Information <br /> Sample ID 18737-04 Sample Type- Grab <br /> Sample Description Travel Blank Project Name, N/A <br /> Date/Time Sampled 11/25/2002 10 45 00 AM Sample Matrix Surface Water <br /> ANALYTICAL RESULT QAIQCREPORT <br /> Date LCS Spike MS Spike <br /> Nest Parameter Method DLR Unit Result Analyzed Blank Conc. LCS% Conc. MS% MSD RSD <br /> I Benzene EPA 8260B 05 ug/L ND 26-Nov-02 ND 8 1100% 8 1063% 1013% 12% <br /> Toluene EPA 8260Bmm 05 ug/L ND 26-Nov-02 ND 8 1063% 8 1013% 1025% 03% <br /> Ethylbenzene EPA 82606 05 ug/L ND 26-Nov-02 ND 8 1125% 8 1063% 1050% 03% <br /> m,p-Xylene EPA 8260B 05 ug1L ND 26-Nov-02 ND 16 1063% 16 988% 1063% 18% <br /> o Xylene EPA 8260E 05 ug1L ND 26-Nov-02 ND 8 1045% 8 1050% 1025% 06% <br /> mg/L=m+lligranis per Liter=ppm RSD-represent r elame percent different(RPD)between duplicates spike of samples <br /> 74- <br /> ULLY T D ug/L=mrcr agrams per Liter =ppb <br /> or Duplicate of Sample <br /> hSS/dfSD-naeasure of the percent recovery efficienciesurthrn the urarrix <br /> aw C=Composite G=Grab <br /> LCS-measure of the percent recovery of the Laboratory Control Spike(LCS) <br /> Jonatha►i Hao Y. Le, Laboratory Di►ector DLR-Detection Limit for the Purpose of Reporting Exceptional sample <br /> matrices or interfei eneces may result in higher detection hinas <br /> ec <br /> I <br /> EPA-Envuonnrerttal Prorecnon Agerrcra�tr 462-0892 Fax (2091 462-7935 Page I of I <br />