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i <br /> i <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 Top Fdimg Sampled 09-04-02 <br /> I of Northern California Reference Number 5034 Received 09-05-02 <br /> 837 Shaw Road Sample Description Water Extracted 09-05-02 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 503018015, 8020 Analyzed 09-05-02 <br /> Attn Tim Cuellar Lab Numbers 5034-1W, 2W 3W 4W 5W Reported 09-12-02 <br /> I <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 MW MW3 MW MW5 <br /> 09-04-02 09-04-02 09-04-02 09-04-02 09-04-02 <br /> I (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> MTBE 050 ND NO 290 NO ND <br /> BENZENE 050 ND 220 5500 ND 120 <br /> ITOLUENE 050 NO 75 600 ND ND <br /> ETHYL BENZENE 050 ND 82 400 ND 240 <br />'• TOTAL XYLENES 050 NO 19 680 ND 190 <br /> GASOLINE RANGE <br />' HYDROCARBONS 50 NO 550 12000 ND 3800 <br /> Report Lund Multiplication Factor 1 5 200 1 5 <br /> I <br />' Surrogate% Recovery FID 101/1FID 1906 FID 985%1W0 958% FID 108%lPiD 104% FID 953%lplD 974,6 FID 225%/PI13 145% <br />' Instrument ID VAR-GCI 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 /> I <br /> 7 <br />' ANALYST APPROVED BY <br /> Clan J Cone J e C Phillips <br /> I'laboratory Director <br /> I <br />