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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 See Below <br /> t of Northern California Reference Number 5220 Received See Below <br /> 837 Shaw Road Sample Description Water Extracted 11-16-02 <br /> Stockton,CA 95215 Sample Prep/Analysis Method EPA 503018015,8020 Analyzed 11-16-02 <br /> Attn Tim Cuellar Lab Numbers 5220-21W,22W,23W,24W 25W Reported 11-26-02 <br /> ' TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> WITH BTEX DISTINCTION <br /> ' ANALYTE REPORTING LIMIT SAMPLE fD SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 13B MW 13C MW 130 MW 13E MW 8A <br /> 111102 111102 111102 111102 111202 <br /> ' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 050 ND NO ND NO NO <br /> t TOLUENE 050 NO ND NO NO ND <br /> ETHYLBENZENE 050 ND NO ND NO NO <br /> TOTAL XYLENES 050 ND NO ND ND ND <br /> GASOLINE.RANGE <br /> HYDROCARBONS 50 ND NO ND ND ND <br /> 1 Report Limit Multiplication Factor 1 1 1 1 1 <br /> ' Date Sampled 11-11-02 11-11-02 11-11-02 11-11-02 11-12-02 <br /> Date Received 11-12-02 11-12-02 11-12-02 11-12-02 11-13-02 <br /> Surrogate%Recovery FD 979%l PID Sao% FID 9709E 1 PID 972% FID 98 1%1 PID 987% Fib 828%/PID 924% FID 941%)PID 931% <br /> Instrument ID VAR-GCI VAR-GC1 VAR-GC1 VAR-GC1 VAR-GCI <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 /> ANALYST APPROVED 8Y <br /> ' Clan J one Ja es lips <br /> boratory Director <br /> i <br /> E { <br />