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i <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209) 384-2930 <br /> ICertificate#2480 Fax (209) 384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Pacific Car Wash Sampled 07-31-03 <br /> I of Northern California Reference Number 5946 Received 08-01-03 <br /> 837 Shaw Road Sample Description Soil Extracted 08-01-03 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 08-01-03 <br /> Attn Tim Cuellar Lab Numbers 5946-1S 2S Reported 08-11-03 <br /> I <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GUMS <br /> ANALYTE REPORTING SAMPLE ID SAMPLE ID <br /> LIMIT MW 14-70 MW 14-80 <br /> m /K m /K m /K <br /> FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 0 010 NO ND <br /> Di isopropyl Ether (DIPS) 0 010 ND ND <br /> Ethyl tert-Butyl Ether (ETBE) 0 010 ND ND <br /> tert-Amyl Methyl Ether(TAME) 0 010 ND ND <br /> tert-Butanol(TBA) 0 800 ND ND <br /> I <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichloroethane (1 2-DCA) 0 010 NO ND <br /> IEthylene Dibromide (EDB) 0 410 ND NO <br /> Report Limit Multiplication Factor 1 1 <br /> i <br /> I <br /> Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 750% 772% <br /> Toluene-d8 785% 769% <br /> I Instrument ID 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 /> mg/Kg = milligrams per kilogram or per million (ppm) <br /> iANALYST APPROVED BY <br /> Clan J ConeJa s )Ihps <br /> oratory Director <br /> I <br />