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I <br />' CASTLE ANALYTICAL LABORATORY _ <br /> Environmental Testing Services 2'33 Shuttle Drive Atwater, CA 95301 Phone (209)384-2930 <br />' Certific i'e 112480 Fax (209)384-1547 <br /> Advanced GeoEnvironmental, Inc, Client Project ID Cal Fuels Sampled 10-07-04 <br />' of Northern California Reference Number 7440 Receiv 1 10-08-04 <br /> 837 Shaw Road Sample Description W.iter Extra led 10-13-04 <br /> Stockton CA 95215 Sample Prep/Analy s Method EPA 5030/8260 An yzed 10-13-04 <br /> Attn T;m Cuellar L ab Numbers 7440 11W, 12W 13W 14W, 15W Reported 10-20-04 <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GCIMS <br />' ANALYTE REPCRTiNG SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW 12 MW 13A MW 13B MW 13C AW 1A <br />' — — 100704 100704 100704 100704 100704 <br /> WWI-) (Ng1L) (Ng1L) (pg1L) (pglL) (pglL) <br /> FUEL OXYGENATES <br />' Methyl tert-Butyl Ether(MTBE) 050 NO NO ND NO NO <br /> Di-isopropyl Ether (D1PE) 050 NO ND ND ND ND <br /> Ethyl tert-Butyl Ether (ETRE) 050 ND ND ND ND NO <br /> tert-Amyl Methyl Ether(TAME) 050 ND ND ND NO ND <br />' tert-Butanoi(TBA) 20 NO NO ND ND ND <br />' <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichloroethane (1 2-DCA) 0 50 NO NO NO ND ND <br />' Ethylene Dibromide (EDB) 050 NO NO ND ND NO <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> I <br /> I <br /> Surrogate Recoveries <br /> I1,2-Dichloroethane-d4 918% 958% 917% 985% 946% <br /> Toluene-d8 876% 947% 910% 982% 974% <br />' Instrument ID HP 5972 MS <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> (ug/L)= micrograms per liter or parts per billion (ppb) <br /> n /� <br /> iAPPROVED BY APPROVED BY Q( A <br />' Clair J Corte Jame C lips <br /> Laboratory Manager La ratory Drrector <br />