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1 <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2363 Shuttle Drive,Atwater,CA 95301 Phone (209)384-2930 <br /> ' Certificate No 2480 Fax (209)384-1507 <br /> Advanced GeoEnviron mental, Inc Client Project ID Rainwater Car Wash Sampled 09-26-02 <br /> of Northern California Reference Number 5103 Received 09-27-02 <br /> 837 Shaw Road Sample Description Water Extracted 09-30-02 <br /> Stockton,CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 09-30-02 <br /> Attn Tim Cuellar Lab Numbers 5103-1W, 2W, 3W Reported 10-10-02 <br /> 1 <br /> GASOLINE ADDITIVES& HALOCARBONS BY EPA METHOD 8260 GC/MS <br /> ' ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT Effluent GAC-2 Influent <br /> ' — 09-26-02 09-26-02 09-26-02 <br /> (pg/L) (ug/L) (ug/L) (ug/L) <br /> BTEX <br /> Benzene 060 ND ND 830 <br /> Toluene 0 50 NO ND 1900 <br /> ' Ethylbenzene 0 50 NO ND 230 <br /> Total Xylenes 0 50 ND NO 1900 <br /> FUEL OXYGENATES <br /> IMethyl tert-Butyl Ether(MTBE) 0 50 NO 26 6700 <br /> Di-isopropyl Ether (DIPE) 0 50 NO ND NO <br /> ' Ethyl tent-Butyl Ether (ETBE) 0 50 NO ND 1 4 <br /> tert-Amyl Methyl Ether(TAME) 0 50 NO ND 180 <br /> tert-Butanol(TBA) 20 300 ND 180 <br /> VOLADLE_HALQCARBONS <br /> 1 2-Dichloroethane (1,2-DCA) 050 ND NO NO <br /> ' Ethylene Dibromide (EDB) 0 50 ND ND ND <br /> Trichloroethene(TCE) 050 ND ND 5 0 <br /> Tetrachloroethene (PCE) 0 50 ND ND 11 <br /> Report Limit Multiplication Factor 1 1 1 <br /> Report Limit Multiplication Factor for BTEX&TAME 50 <br /> Report Limit Multiplication Factor for MTBE 500 <br /> Surrogate Recoveries <br /> t 1,2-Dichloroethane-d4 920% 833% 749% <br /> Toluene-d8 949% 9660/0 832% <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 /> (pg/L)= microgra per liter or per billion(ppb) <br /> l <br /> ' ANALYST APPROVED BY <br /> Clary J Cane I J s G Ph,lbps <br /> aborefory Director <br /> 1 i <br />