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rrrrrrrr� � � s � � i• � i• � � � � 1• � � � <br /> CERTIFICATE OF ANALYSIS <br /> Analytical L-aboratary <br /> TO. Tim Cuellar Triesday, October 12, 1999 <br /> Advanced GeoEnvironmental, <br /> 4005 N Wilson Way <br /> Stockton, Ca 95205 <br /> Sample Information <br /> Sample ID PE6145-01 Sample Type Gt ab <br /> Sanrple Description VW-1(Vapor Extraction Well No 1 Pioject Nanre Marlowe Properties <br /> Date/Tinie Sanipled 10/1 1199 12 00 00 PM SarnpleMatit-v An <br /> ANALYTICAL.RESULT QA/QCREPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzer! Blank Colic LCS% Colic MS Y, MSD RSD% <br /> TPH-Gasoline EPA 8015MIDH5 - 50ug/L 58011-Oct-99 ND 500 1020% 500 1040% 108 0% 09% i <br /> Methyl t-Butyl Ether(MtBE) EPA6260 05 uglL ND 11-Oct-99 ND 20 1000% 20 1100% 900% 50% <br /> Benzene EPA 8260 0 5 ryug/L ND 11-Oct-99 ND 20 900% 20 950% 900% 14% <br /> Toluene EPA 8260 05 uglL 25 a� — 11-Oct-99 ND 20 990% 20 950% 900% 14% { <br /> Ethylbenzene EPA 8260 05 uglL 19 11-Ott-99 ND 20 1150% 20 1200% 1250% 10% <br /> Xylene(Total) EPA 8260 0 5 ug1L 150 11-Oct-99 ND 20 1035% 20 1050% 1100% 12% <br /> nag/L=nnlhgranrs per Later =ppm DLR-Defection Lrnnf for the Purpose of Repot ong RSD-t epresent elauve per cent differ err[(RPD)between duplrcales spike of samples <br /> uglL marrogranis per 1 iter=ppb Erceplronal sample malt rres a nater fet eneces nray r evill rrr or Dnphrare of Sample <br /> C=Composite G=Grab higher derecttton Inners AIS/MSD tneastrre of the percent recoiepy efcrencres watlnn the rnatrrr <br /> LCS-mensioe of the percent recovery of the Laboratory=Control Spike(LCS) <br /> BL�&TFU] II TTED, <br /> Jonathan Hao V Le, Laboratory Dn ectoi <br /> i <br />�4 <br /> I <br /> ii <br /> It <br />:r <br /> LPA-f oovrinental Protection Agenr} Alethod _— Page I of I <br /> SA15tandatdAfethodfotLxannratnont(J t(E"'Csiff&Mh'tt Suite A Stockton!, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br /> t <br />:r <br />