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CER TIFICA TE OF ANALYSIS <br /> Analytical Laiboratory <br /> Wednesday,September 01, 1999 <br /> Advanced GeoEnvlronmental, <br /> 4005 N Wilson Way <br /> Stockton, CA 95205 <br /> I <br /> Sample Infoimation <br /> Sample ID PE5851-01 Sample Tj j)e Giab <br /> Sample Desei rphon Vapor Extraction Well h oject Name Marlowe <br /> Datelhine Srirnpled 8/27/99 5 00 00 PM Saurple Afatm An <br /> ANALYTICAL_RES ULT r � QAIQCREPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Resell Dilution L.Analyzed Blank Colic. LCS% Colic MS% MSD RSD% <br /> TPH-Gasoltne EPA 8015M/DHS 005 mg/L 031 1 31-Aug-99 ND 098 101 0% 098 980% 1000% 05% <br /> Benzene EPA 8020 05 ug1L i6 _ 1 31-Aug-99 ND 20 950% 20 975% 1050% 1 9% <br /> Toluene EPA 8020 05 _E scuglL - 1550 1� -� 31-Aug-99 ND 20 985% 20 1050% 1100% 12% <br /> i Ethylbenzene EPA 8020 05 ug1L 2190 1 t, 31-Aug-99 ND 20 1050% 20 990% 1000% 03% <br /> l <br /> Xylenes,TotaEPA 8020 05 ug/L 76 �^1 _ 31-Aug-99 ND 20 1000% 20 1025% 1050% 06% <br /> i <br /> Methyl-t-Butyl Ether(MtBE) —'EFA 8020 _ 40 5 -ug1L~ ND ----- 1 �� 31-Aug-99 ND 20 925% 20 985% 1050% 7 6% <br /> r nig/I.=inrllagrams per I tier=ppm DLR-Detection Limit for [tic purpose of RSD-rept event relate e per cent differ en t(HPD)between drrpheates spike of samples <br /> uglL=microgr arrrs per Later =ppb Hepor rnlg or Duplicate of Sample <br /> C=Composite G=Grab <br /> aucrferenecev may rcuilt in higher detection A�IS/AISD measire of p recovery �the per a acrencies walun the nratrax <br />' lurrrts <br /> LCS measnrc of The percent iecoket} of the Laboratory Control spike(LCS) <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Hao V Le, Laboi atory Du eetoi <br /> 5 <br /> f <br /> t <br /> t <br /> S <br /> CPA Lrnuaraaerual Protectrorr Agenc} Alerhod Page I of I <br /> SH-5tmtdrrrdAfethodfo+ LxarnurattonNlYE "'OOVMNhLtt Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />