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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater CA 95301 Phone (209)381-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> ' Advanced GeoEnviron mental, 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 503018015,8020 Analyzed 11-13-02 <br /> ' Attn Tim Cuellar Lab Numbers 5218-11W, 12W, 13W, 14W Reported 11-26-02 <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 /> ' <br /> 11-10-02 <br /> (uglL) (uglL) (uglL) (ug/L) (ug/L) <br /> BENZENE 050 ND 240 ND NO <br /> ' TOLUENE 050 NO 110 ND ND <br /> ETHYLBENZENE 050 ND 53 NO ND <br /> TOTAL XYLENES 050 ND 670 ND ND <br /> ' GASOLINE RANGE <br /> HYDROCARBONS 50 NO 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 /> Surrogate%Recovery FID 101%JPID 101% Flo 103%1pio 102% Flo-100%I No 106% FIa102%I P10-102% <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 /> 0 Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> ANALYST ! l L 7 L APPROVED BY <br /> Clan J Cone Ja*es C Phillips <br /> aboratory Director <br />