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6r—HWdRO-TEICH CERTIFICATE OF ANALYSIS <br /> Analytical Laboratory <br /> Tuesday,February 12,2000 <br /> TO Welham Little <br /> Advanced GeoEnvtronmental, <br /> 4005 N Wilson Way <br /> Stockton, Ca 95205 <br /> i <br /> Sample Information <br /> Sample ID: AD02 i 0-I 1 Sample Type: Grab <br /> Sample Description: MW2-20 Project Name: Bogettis Orchard Service <br /> DatelTime Sampled: 2/8/00 2 30 00 PM Sample Matrix: Soil <br /> I <br /> QA/QC REPORT <br /> ANALYTICAL RESULT <br /> Date LCS Spike MS Spike <br /> t i Test Parameter Method DLR Unit Result Analyzed Blank Conc. LCS% Cone. MS% MSD RSD <br /> TPH-Gasohne EPA 8015M1DHS 1 mglKg ND 11-Feb-00 ND 05 960% 05 920% 940% 05% <br /> TPH-Diesel EPA 8015M/DHS 10 mg/Kg ND 11-Feb-00 ND 100 950% 100 950% 1050% 25% <br /> Methyl t-Butyl Ether(MtBE) EPA8260 5 ug/Kg ND 11-Feb-00 ND 40 950% 40 1050% 1025% 06% <br /> Dilsopropyl ether(DIPE) EPAS260 5 ug/Kg ND 11-Feb-00 ND 40 900% 40 1050% 1025% 06% <br /> } Ethyl-t-butyl ether(ETBE) EPA8260 5 ug/Kg ND 11-Feb-00 ND 40 1050% 40 1025% 1050% 06% <br /> i Tert-amyl methyl ether(TAME) EPA8260 5 ug/Kg ND i i-Feb-00 ND 40 900% 40 900% 925% 07% <br /> t-Butanol(TBA) EPA8260 5 ug/Kg ND 11-Feb-00 ND 40 950% 40 975% 875% 27% <br /> Benzene EPA 8260 5 ug/Kg ND 11-Feb-00 ND 40 95 0% 40 950% 975% 06% <br /> Toluene EPA 8260 5 ug/Kg ND 11-Feb-00 ND 40 1000% 40 975% 950% 06% <br /> Ethyl Benzene EPA 8260 5 ug/Kg ND 11-Feb-00 ND 40 1050% 40 1025% 1050% 06% <br /> I Xylene,Total EPA 8260 5 ug/Kg ND 11-Feb-00 ND 80 1000% 80 1125% 1138% 03% <br /> f <br /> rnglL=milligrams per Liter=ppm DLR-Detection Lrmrt for the Purpose of Reporting RSD-represent relative percent d�erent(RPD)between duplicates cprke of samples <br /> uglL=microgranis per Liter=ppb Exceptional sample matrices or interfereneces may result in or Duplicate of Sample <br /> higher detection limits MS/MSD-measure of the percent recovery of ciencies w ithm the matrix <br /> C—Composite G=Grab <br /> LCS-measure of the percent recovery of the Laboratory Control Spike(LCS) <br /> I <br /> TF U ITTED, <br /> , i <br /> Jonathan Hao V. Le,Laboratory Director <br /> EPA-Environmental Protection Agency Method Page l of I <br /> '_ SM Standard Method for Examrnalron r Gtawei4aKd Ot Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />