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' CASTLE i E 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 See Below <br />' of Northern California Reference Number 6371 Received 12-02-03 <br /> 837 Shaw Road Sample Description Water Extracted 12-06-03 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 12-06-03 <br /> Attn Tim Cuellar Lab Numbers 6371-11W 12W, 13W, 14W, 15W Reported 12-18-03 <br /> IGASOLINE ADDITIVES AND SOLVENTS BY EPA METHOD 8260 GCIMS <br /> ANALYTE; REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br />' LIMIT MW 108 MW 11 MW 12 MW 13A MW 13B <br /> 112603 112603 112603 112603 112803 <br /> (Ijg/L) (ug/L) (ug/L) T (ug/L) (ug/L) (ug/L)� <br /> FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 180 NO NO NO NO <br /> Di-isopropyl Ether (DIPS) 150 NO NO NO NO NO <br /> Ethyl tert-Butyl Ether (ETBE) 050 NO NO NO NO NO <br />� . tert-Amyl Methyl Ether(TAME) 050 11 NO NO NO NO <br /> tert-Butanol(TBA) 20 ND NO NO NO NO <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichtoroethane (1,2-DCA) 050 21 NO NO ND NO <br /> Ethylene Dibromide (EDS) 050 NO NO NO ND NO <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> Report Limit Multiplication Factor for MTBE 10 <br /> Date Sampled 11-26-03 11-26-03 11-26-03 11-26-03 11-28-03 <br /> Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 113% 991% 102% 905% 106% <br /> Toluene-d8 101% 100% 102% 101% 900% <br /> 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 /> (leg/L)= micrograms per liter or part er billion(ppb) <br /> I , <br /> ANALYST APPROVED BY <br /> Clary J Cone Ja s C hillips <br /> Xboratory Director <br />