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CER TIFICA TE OF ANA L YSIS <br /> lVellijesdqv,November 10, 1999 <br /> TO: Jay Jahangiril Mike Luksic <br /> Port of Stockton <br /> 2201 W. Washington St. <br /> Stockton Ca. 95205 <br /> Sample litforniation <br /> Sample ID: PE6255-02 Sample Type: Grab <br /> Sample Description: MWS-1 Project Name: Monitoring Well <br /> Dote/Time Sampleel. 10122/99 2:00:00 PM Sample Matrix. Ground Water <br />,,4K <br /> ANALYTICAL RESULT QAIQCREPORT <br /> Date LCS Spike MS Spike <br /> Blank Conc. LCS% Conc. MS% MSD <br /> Test Parameter Method DLR Unit Result Analyzed RSD <br /> . TPH-GasolineEPA 801 5M/DHS 50 ug/L ND 25-Oct-99 NO 1000 108.0% 1000 108.0% 105.8% 0.5% <br /> P' <br /> I.' <br /> t Methyl t-B uty I Ether(MtB E) EPA8260 0.5 ugIL ND -99 ND 40 87.5% 40 87.5% 105,0% 4.5% <br /> Benzene EPA 8260 0.5 ug/L No 25-Oct-99 NO 40 95.0% 40 137.5% 140.0% 0.5% <br /> Toluene EPA 8260 0,5 ugIL ND 25-Oct-99 NO 40 95,0% 40 120.0% 130.0% 2.0% <br /> Ethylbenzene EPA 8260 0.5 ug/L ND 25-Oct-99 ND 40 87,5% 40 102.5% 120.0% 3.9% <br /> yY Xylene(Total) EPA 8260 0.5 ugIL ND 25-Oct-99 NO 80 93.8% 80 143.8% 156.3% 2.1% <br /> irkglL=njiffigrains per Liter=pprir DLR-Defection Limil./or the Purpose of Repnrliirg. IND-represent relofire percent different(RID)between duplicates spike of somples <br /> wes or iw�v resull it? <br /> Erceptional sample atalt or Duplicate qfStwnple <br /> rte/!. -micrograins per I iter=ppb <br /> higher detection finfiry USI'VISD-weaufre of the percent recovery efficiencieswilhin the rplatris <br /> C=Cnitiposile G=Grah <br /> LCS-measure of the percent recovery of the Laboratory Control Spike(LCS) <br /> RES TFU D, <br /> ----------- <br /> Jonothan Hao V. Le, Laboratory Director <br /> X <br /> r. <br /> rI:I-Environmental Pi,olectiotj,,Igeiic)�,ttelliotl. Page I qf I <br /> S,I I-Standord J leihodfior Fy'antio iatim r)?-7935 <br /> S'Llite A Stockton, CA 9F204 Tel.: (209) 462-0892 Fax: (209) 4 <br />