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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater CA 95301 Phone (209)384-2930 <br /> Certificate No 2480 Fax (209)384-1507 <br /> EAdvancedGeoEnvironEnvironmental, Inc Client Project ID Top Filling Sampled 03-04-03lifornia Reference Number 5521 Received 03-05-03 <br /> d Sample Description Water Extracted 03 07-03 <br /> 5215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 03-07-03 <br /> lar Lab Numbers 5521-11 W, 12W, 13W, 14W, 15W Reported 03-18-03 <br /> GASOLINE ADDITIVES AND SOLVENTS BY EPA METHOD 8260 GC/MS <br /> ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW 7A MW 713 MW 7C MW 7D MW 7E <br /> 030403 030403 030403 030403 030403 <br /> ( /L u /L (ug/L (ug/L (ug/L u /L <br /> FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 280 430 NO ND ND <br /> Di-isopropyl Ether (DIPE) 050 ND ND ND ND ND <br /> Ethyl tert-Butyl Ether (ETBE) 050 ND ND ND ND NO <br /> tert-Amyl Methyl Ether(TAME) 010 ND ND ND NO ND <br /> Otert-Butanol (TBA) 20 ND ND ND NO ND <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichloroethane (1,2-DCA) 050 14 180 ND ND ND <br /> Ethylene Dibromide (EDB) 050 ND NO ND NO ND <br /> Report Limit Multiplication Factor 20' 20` 1 1 1 <br /> I <br /> Report limit raised due to matrix interference <br /> Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 781% 76a% 752% 695% 831% <br /> Toluene-0 103% 948% 976% 102% 960% <br /> Instrument ID Varian Saturn 3 MS&HP 5972 MS <br /> Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> (pg/L)= micrograms per liter or pa"r billion (ppb) <br /> �NALYST APPROVED BY <br /> Clan J Cone Ja es C Phillips <br /> Iaboratory Director <br /> I <br />