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CASTLE 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 GeoEnvuonmental, Inc Client Project ID Rainwater Car Wash Sampled 05-29-02 <br /> ' of Northern California Reference Number 4727 Received 05-30-02 <br /> 837 Shaw Road Sample Description Water Extracted 06-03-02 <br /> Stockton,CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 06-03-02 <br /> Attn Tim Cuellar Lab Numbers 4727-1W,2W 3W 4W 5W Reported 06-07-02 <br /> 1 <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GCIMS <br /> ' ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW 1 MW 2 MW 3 MW 4 MW 5 <br /> ' 05-29-02 05-29-02 05-29-02 05-29-02 05-29-02 <br /> IL (u /L) ((ug/L u IL u /L ug/L) <br /> FUEL OXYGENATES <br /> ' Methyl tert-Butyl Ether(MTBE) 050 1700 240000 1500 22 ND <br /> Di-isopropyl Ether (DIPE) 050 ND NO NO ND ND <br /> Ethyl tert-Butyl Ether (ETRE) 050 ND NO NO NO ND <br /> tert-Amyl Methyl Ether(TAME) 050 79 2600 25 ND ND <br /> tert-Butanol(TBA) 20 100 NO NO ND ND <br /> VOLATILE HALOCARBONS <br /> 1,2-Drehloroethane (1,2-DCA) 050 NO NO NO ND ND <br /> ' Ethylene Dibromide (EDB) 050 NO NO NO ND NO <br /> ' Report Limit Multiplication Factor 5 500 5 1 1 <br /> Report Limit Multiplication Factor for MTBE 100 10000 100 <br /> 1 <br /> (A) A significant amount of PCE was detected in this sample <br /> Surrogate Recoveries <br /> 1,2-Dichloroethane-d4 102% 785% 927% 761% 783% <br /> 1 Toluene-18 911% 955% 888% 102% 876% <br /> Instrument ID Varian Saturn 3&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)r micrograms er liter or parts r i on pb) <br /> ANALYST APPROVED BY (7A4 <br /> Clary J Cane J e Phr!lfps <br /> aboratory Drrecfor <br /> i <br />