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I <br /> I <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Seances 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 12-08-03 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 12-08-03 <br /> Attn Tem Cuellar Lab Numbers 6371-26W 27W 28W 29W, 30W Reported 12-18-03 <br /> 1 <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 14D MW 19C MW 16A MW 16B MW 16C <br /> 112503 112503 112503 112503 112503 <br /> (tag/L) (u911) <br /> FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 ND NO 69 31 20 <br /> Di-isopropyl Ether (DIPE) 050 ND ND ND NO NO <br /> Ethyl tert-Butyl Ether (ETBE) 050 NO NO NO NO ND <br /> lietert-Amyl Methyl Ether(TAME) 050 ND NO NO NO ND <br /> tert-Butanol(TBA) 20 NO ND NO NO NO <br /> VOLATILE HALOCARBONS <br /> 1 2-Dchloroethane (1,2-DCA) 050 ND ND NO ND 075 <br /> Ethylene Dibromide (EDB) 050 ND ND ND NO NO <br /> IReport Lima Multiplication Factor 1 1 1 1 1 <br /> Surrogate Recoveries <br />' 1 2-Dichloroethane-d4 882% 101% 986% 102% 100% <br /> Toluene-d8 913% 110% 92 1% 101% 983% <br /> Instrument ID HP 5972 MS <br /> Analytes reported at,ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantdatton Limit= Reporting mit x Report Limit Multiplication Factor <br /> (pg/L)= microgr nj pe iter or part per illi (ppb) <br /> ANALYST APPROVED BY <br /> Clary J Cone Ja es 7hillips <br /> Iboratory Director <br />