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O <br /> CERTIFICATE OF ANALYSIS <br /> Aiia/yt i4cai L.aAba�•-3t®� Tuesday,April 24,2001 <br /> TO William Little <br /> Advanced GeoEnvlronmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Sample Information <br /> Sample ID: PE11268-05 Sample Type: Grab <br /> Sample Description: 040901-MW 3A Project Name: Den's Auto Repair <br /> DatefTime Sampled. 04/09/2001 12 35 00 PM Sample Matrix: Ground Water <br /> ANALYTICAL RESULT QAIQC REPORT <br /> - Date x LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blank Conc. LCS% Cone. MS% MSD RSD <br /> TPH-Gasoline EPA 8015WDHS 50 uglL ND 13-Apr-01 ND 500 960% 500 980% 980% 00% <br /> Methyl t-Butyl Ether(MtBE) EPA 8260M 05 ug/L ND 13-Apr-01 ND 32 1027% 32 991% 1014% 06%I <br /> Di-Isopropyl ether(DIPE) EPA 8260M 05 ug/L ND 13-Apr-01 ND 16 1034% 16 988% 1031% 11% <br /> Ethyl-t-butyl ether(ETBE) EPA 8260M 05 ug/L ND 13-Apr-01 ND 16 968% 16 967% 961% 01% <br /> Tert-amyl methyl ether(TAME) EPA 8260M 05 uglL ND 13-Apr-01 ND 16 1006% 16 936% 906% 08% <br /> t-Butanol(TBA) EPA 8260M 10 ug/L ND 13-Apr-01 ND 200 970% 160 938% 1063% 31% <br /> Benzene EPA 8260M 05 uglL ND 13-Apr-01 ND 32 961% 32 988% 956% 08% <br /> Toluene EPA 8260M 0 5 ug/L ND 13-Apr-01 ND 32 953% 32 996% 939% 15% <br /> Ethylbenzene EPA 8260M 05 ug/L ND 13-Apr-01 ND 32 942% 32 997% 920% 20% <br /> Xylene(Total) EPA 8260M 05 ug/L ND 13-Apr-01 ND 32 950% 32 99 5% 95 6% 10% <br /> 1,2-Dichoroethane(DCA) EPA8260 05 ug/L ND 13-Apr-01 ND 16 969% 16 1063% 1031% 07% <br /> Ethylene Dibromide(EDB) EPA 8260 05 ug/L ND 13-Apr-01 ND 16 969% 16 988% 981% 02% <br /> Methanol EPA 8260 25 ug/L ND 13-Apr-01 ND 100 1000% 100 960% 980% 05% <br /> Ethanol EPA 8260 25 ug/L ND 13-Apr-01 ND 98 102 0% 100 980% 960% 05% <br /> nig/L=nnlltgrams per Liter =pprn RSD-r epi esent relative percent different(RPD)between duplicates spike ofsamples <br /> ug/L=micrograms per Lr[e) =ppb <br /> or Duplicate of Sample <br /> RESPECT UL 7 TED, MS/MSD-riteasura of the percent recovery efcrencies within the matrix <br /> C=Composite G=Grab LCS-measure of tire per cent)ecovery of the Laboratory Control Spike(LCS) <br /> DLR-Detection Limit forlhe Purpose of Reporting Ercepttonad sample <br /> .Ion tit 11 Hao V Le,Laboratory Director mat)ices of interfei eneces mai result in ingher detection ltnuts <br /> Page I of I <br /> EPA-Levu onmenial P,otecitorr,Agency Method <br /> SM-Standard Met/iod fm ExanrtnatroS4r8Viffr dY4V4(9l{a'& Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />