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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 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 5218-1W,2W,3W,4W, 5W 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 SAMPLE ID <br /> MW MW2 MW MW4 MW5 <br /> 11-11-02 11-11-02 11-11-02 11-10-02 11-11-02 <br /> (ug1L) (ug/L) (uglL) (ug/L) (ug/L) (ug/L) <br /> BENZENE 050 NO 1200 ND NO ND <br /> TOLUENE 050 NO 9000 NO NO ND <br /> ' ETHYLBENZENE 050 NO 2300 ND NO ND <br /> TOTAL XYLENES 050 NO 12000 ND NO ND <br /> GASOLINE RANGE 270 780 ND <br /> HYDROCARBONS 50 ND 91000 <br /> ' Report Limit Multiplication Factor 1 1000 1 1 1 <br /> ' Date Sampled 11-11-02 11-11-02 11-11-02 11-10-02 11-11-02 <br /> ' non-gas <br /> pattern <br /> tSurrogate%Recovery FID 97 4%1 PID 994% FID 106%1 WD 105% FID 977%7 PID 888•% PID 107%!PI0 106% RD 161%/PFD 108% <br /> ' Instrument ID VAR-GC1 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 /> 1 � <br /> 1 ANALYST ` " APPROVED BY <br /> s�:. <br /> Clan J one Ja s C Phillips <br /> LAoratory Director <br />