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1 <br /> lie <br /> 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 /> Advanced GeoEnvironmental, Inc Client Project ID Pac Car Wash Sampled 11-25-03 <br />' of Northern California Reference Number 6371 Received 12-02-03 <br /> 837 Shaw Road Sample Description Water Extracted 12-09-03 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 12-09-03 <br /> Attn Tim Cuellar Lab Numbers 6371-41W Reported 12-18-03 <br />' GASOLINE ADDITIVES AND SOLVENTS BY EPA METHOD 8260 GCIMS <br /> ANALYTE REPORTING SAMPLE ID <br /> I LIMIT MW 19B <br /> 112503 <br /> IL (u/L) <br />' FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 NO <br /> Di-isopropyl Ether (DIPE) 050 ND <br /> Ethyl tert-Butyl Ether (ETBE) 050 ND <br /> tort-Amyl Methyl Ether(TAME) 050 NO <br /> tert-Butanol(TBA) 20 ND <br /> VOLATILE HALOCARBONS <br /> 1,2-Dichloroethane (1,2-DCA) 050 NO <br /> Ethylene Dibromide (EDB) 050 ND <br /> Report Limit Multiplication Factor 1 <br /> Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 869% <br /> To#uene-dB 942% <br /> Instrument ID HP 5972 MS <br /> Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporti Limit x Report Limit Multiplication Factor <br /> (pg1L)= microgra s per liter or p s p r billion(ppb) <br /> IANALYST APPROVED BY <br /> Clan Cone70i-19tory <br /> C I/Ilps <br /> Director <br />