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' 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 GeoEnviron mental, Inc Client Project 1D Rainwater Car Wash Sampled 11-11-02 <br /> of Northern California Reference Number 5220 Received 11-12-02 <br /> 837 Shaw Road Sample Description Water Extracted 11-15-02 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 503018015,8020 Analyzed 11-15-02 <br /> Attn Tim Cuellar Lab Numbers 5220-1 W 2W, 3W,4W 5W Reported 11-26-02 <br /> TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> ' WITH BTEX DISTINCTION <br /> ' ANALYTE REPORTING LIMIT SAMPLE 1D SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 13F MW 7A MW 78 MW 7C MW 7D <br /> 111102 111102 111102 111102 111102 <br /> (ug/L) (uglL) (uglL) (uglL) (ug/L) (uglL) <br /> BENZENE 050 NO ND 057 23 15 <br /> TOLUENE 050 ND NO 060 23 12 <br /> ETHYLBENZENE 050 ND NO ND ND NO <br /> TOTAL XYLENES 050 ND ND ND 32 21 <br /> ' GASOLINE RANGE <br /> HYDROCARBONS 50 ND 2000 95 140 250 <br /> ' Report Limit Multiplication Factor 1 5 1 1 1 <br /> 1 <br /> Surrogate%Recovery FID 943%l PID 953% FID 1056!PID 104% FID 119%/PID 120% FID 113%!PID 110% FID 113%l PIA 110% <br /> ' Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> ANALYST APPROVED BY <br /> Clan J ConeJa C Phdhps <br /> aboratory Director <br /> r I <br /> f r <br />