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--- ---- ------ <br /> CER TIFICA TE OF ANALYSIS <br /> Tuesday; October 72, 1999 <br /> TO: William Little <br /> Advanced GeoEnvironmental, <br /> 4005 N. Wilson Way <br /> Stockton, Ca. 95205 <br /> Sample In formation <br /> Sample ID: PE6030-01 Sample Type: Grab <br /> Sample Description: PRE-OX Project Name: Elkhoms SVE <br /> DatelTinreSanipled: 10/1/9913MOPM Sclinple,11arrix: Air <br /> ANALYTICAL RESULT T QAIQC-REPOI?T <br /> .................. ....... --------- <br /> ------------- ....... <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Malik Colic. LCS% Colic. MS% MSD RSD% <br /> Methyl t-Butyl Ether(MtBE) ERA8260 0.5 ug/L IND 05- C wc� 20 100.0% 20 110.0% 105.0% 1.2% <br /> TPN-Gas EPAS260 50 ug/L 2690 05-Oct-99 ND 500 110.0% 500 120.0% 140.0% 3,8%' <br /> Benzene EPA 8260 0.5 ug/L 3.8 05-Oct-99 ND <br /> 20 90.0% 20 q 95.0% 90.0% 14% <br /> 0.5 ug/L ND <br /> 05-Oct-99 <br /> Toluene EPA 8260 ND 20 100-0% 20 90.0% 95.0% 1.4% <br /> Ethylbenzene EPA 8260 0.5 ug/L 50.0 05-Or-t-99 ND 20 95.0% 20 110.0% 120.0% ---"2.2% <br /> 110.0% JJC).O% <br /> .................. <br /> I Xylene (Total) EPA 8260 0.5 ug/L",.- <br /> 670 05 -99 20 90.0% 20 .0% <br /> ............. ........... -11 IJ <br /> mglL milligrams per Liter—ppyn DLR-Defection Lino for Me Pup-pose of Repol ring RSD-reresenti-efalive perceill differeni RPD heAveen duplicates spike of samples <br /> uglL =in ici-ogi-oms per,Liter=ppb Exceplional Sample matrices or inteffel-elleces may I-evill ilF or Duplicale Of SaMPIC <br /> higheldetection linfirs of11repe)cent fccovef) eicielicies wilbll the IIU71111C= Composite G=Grab g <br /> LCS-nwasii)c of the percent r-ecoveg,of the Lnbci-atoi3,Control Spike(LCS) <br /> R_ES�E,CTFU�LP5S_Ur_' ITTED, <br /> Jonathan Hao V. Le, Laboraroi)!Director <br /> lPA -------------- ...... <br /> -Emli-onmewal Pi-otecrion Agency Method. Page I of I <br /> SAI-SICIVF`171-d rVC1110df0l'IL.1:01;Fill a lio 17NY"�t. suite A Stockton, CA 95204 Tei.: (209) 462-0892 Fax: (209) 462-7935 <br />