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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 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 11-13-02 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 11-13-02 <br /> Attn Tim Cuellar Lab Numbers 5218-11W, 12W, 13W, 14W Reported 11-26-02 <br /> 1 <br /> TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> ' WITH BTEX DISTINCTION <br /> ' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE;ID SAMPLE ID <br /> MW 9E Influent Effluent GAC-2 <br /> 11-10-02 <br /> ' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 050 ND 240 ND ND <br /> TOLUENE 050 ND 110 ND ND <br /> ' ETHYLBENZENE 050 ND 53 ND ND <br /> TOTAL XYLENES 0 50 ND 670 ND ND <br /> lie <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 ND 8200 ND ND <br /> ' Report Limit Multiplication Factor 1 20 1 1 <br /> Date Sampled 11-10-02 11-11-02 11-11-02 11-11-02 <br /> 1 <br /> 1 <br /> Surrogate%Recovery Flo 101%IPID 101:6 FID t03%IPID 102% FID 108%1PI0 0" Flo 102%/PiD I=% <br /> ' Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <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 /> r ld <br /> ANALYST t t �. -' APPROVED BY <br /> Clan J Cone J es Phillips <br /> I boratory Director <br /> II i <br /> I i <br />