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' CASTLE ANALYTICAL LABORATORY <br /> • Environmental Testing Services 2333 Shuttle Drive,Atwater, CA 95301 Phone (209)3134-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID 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/Anaiysis Method EPA 5030/8015,8020 Analyzed 11-15-02 <br /> Attn Tim Cuellar Lab Numbers 5220-6W,7W, 8W,9W, 10W 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 SAMPLE ID <br /> MW 7E MW 7F MW 12A MW 126 MW 12C <br /> 111102 111102 111102 111102 111102 <br /> ' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> BENZENE 050 ND ND ND ND ND <br /> TOLUENE 050 ND 063 ND ND ND <br /> ' ETHYLBENZENE 050 ND ND ND ND ND <br /> '• TOTAL XYLENES 050 ND ND ND ND ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 ND ND 410 150 120 <br /> 1 Report Limit Multiplication Factor 1 1 1 1 1 <br /> t <br /> Surrogate%Recovery F1b•953 Al PID 992% FID 104%/PD 107% FID 101%1 PID 976% FID 974%7PID 101% FID 104%!PI13 109% <br /> Instrument!D VAR-GC1 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 0 APPROVED BY <br /> I' ' C!a ane Ja C Phillips , <br /> aborafory Director <br />