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1 <br /> • CASTLE ANALYTICAL LABORATORY <br /> ' Environmental Testing Services 2333 Shuttle Drive,Atwater, CA 95301 Phone (209)384-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental Inc Client Project ID Rainwater Car Wash Sampled 11-12-02 <br /> ' of Northern California Reference Number 5220 Received 11-13-02 <br /> 837 Straw Road Sample Description Water Extracted 11-17-02 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 11-17-02 <br /> ' Attn Tim Cuellar Lab Numbers 5220-31W,32W, 33W,34W,35W Reported 11-26-02 <br /> ' TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> WITH BTEX DISTINCTION <br /> ' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE 1D SAMPLE ID <br /> MW 11A MW 1113 MW 11C MW 11D MW 11E <br /> 111202 111202 111202 111202 111202 <br /> ' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 050 NO NO NO ND NO <br /> ' TOLUENE 050 ND NO NO 50 NO <br /> ETHYLBENZENE 050 ND ND NO NO ND <br /> TOTAL XYLENES 050 NO ND NO NO ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 NO NO NO 73 NO <br /> ' Report Limit Multiplication Factor 1 1 1 1 1 <br /> ' Surrogate%Recovery FID 927%1 PID 930% Flo 96.2%1 PID 963% FID 97.8%1 PID 986% FID 997%f PID 101% FID 952%1 PID gel% <br /> Instrument ID VAR-GCi VAR-GCi VAR-GC1 VAR-GC1 VAR-GCi <br /> ' Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication f=actor <br /> I <br /> ANALYST ` APPROVED BY <br /> Clan J Cone Ja a h1111ps I I <br /> ' aboratory Director <br /> I <br /> I � li <br />