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1 <br /> ' CASTLE ANALYTICAL LABORATORY <br /> SCA <br /> ' Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209)3842930 <br /> Certificate No 2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Rainwater Car Wash Sampled See Below <br /> ' of Northern California Reference Number 5218 Received 11-12-02 <br /> 837 Shaw Road Sample Description Water Extracted 11-14-02 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 11-14-02 <br /> Attn Tim Cuellar Lab Numbers 5218-1 W, 2W,3W,4W, 5W Reported 11-26-02 <br /> 1 <br /> ' GASOLINE ADDITIVES BY EPA METHOD 8260 GUMS <br /> ANALYTE REPORTING? SAMPLE 10 SAMPLE€D SAMPLE ID SAMPLE ID SAMPLE ID <br /> ' LIMIT MW 1 MW 2 MW 3 MW 4 MW 5 <br /> 11-11-02 11-11-02 11-11-02 11-10-02 11-11-02 <br /> (u91L) (ug. <br /> „,....,,,.,,..,1L) (ug1L) --._,.....�ugll-) _ (ug1L) (ug1L) <br /> ._.. __.. <br /> ' FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 21 74000 630 17 NO <br /> Di-isopropyl Ether (DIPE) 050 NO NO NO NO NO <br /> Ethyl tert-Butyl Ether (ETBE) 050 NO NO ND NO ND <br /> ' tert-Amyl Methyl Ether(TAME) 050 081 810 62 NO NO <br /> tert-Butanol(TBA) 20 NO NO NO NO NO <br /> i ' VOLATILE HALOCARBONS <br /> 1,2-Dichloroethane (1,2-DCA) 050 ND NO NO ND NO <br /> tEthylene❑ibromide (EDB) 050 NO NO ND NO NO <br /> Report Limit Multiplication Factor 1 200" 1 1 1 <br /> Report Limit Multiplication Factor for MTBE 2000 20 <br /> Date Sampled 11-11-02 11-11-02 11-11-02 11-10-02 11-11-02 <br /> i <br /> Report limit raised due to matrix interference <br /> 1 Surrogate Recavenes � <br /> 1,2-Dichloroethane-d4 903% 982% 112% 927% 907% <br /> Toluene-d8 994% 103% 102% 112% 1011% <br /> Instrument ID HP 5972 MS <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> ' Practical Quantitation Lima=Reporting Lima x Report Limit Multcplication Factor <br /> (pglL)= micrograms per titer or parts per billion(ppb) <br /> ' ANALYST APPROVED BY <br /> Clan J Cane Jqpfift C Phillips <br /> aborafory Director l <br /> 1 <br /> F <br />