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I <br /> I CASTLE ANALYTICAL LABORATORY <br /> • Environmental Testing Services 2333 Shuttle Drive,Atwater, CA 95301 Phone (209)384-2930 <br /> Certificate#2480 Fax (209)3841507 <br /> Advanced GeoEnvironmental Inc Client Protect ID Cal Fuels(Pacific) Sampled 03-08-02 <br /> of Northern California Reference Number 4487 Received 03-12-02 <br /> 837 Shaw Road Sample Description Water Extracted 03-14-02 <br /> Stockton,CA 95215 Sample Prep/Analysis Method EPA 503018015,8020 Analyzed 03-14-02 <br /> Attn Tim Cuellar Lab Numbers 4487-1W 2W,3W, 4W, 5W Reported 03-22-02 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> I ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 1 MW 2 MW 3 MW 4 MW 5 <br /> 030802 030802 030802 030802 030802 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> IMTBE 050 NO ND ND NO 0 80 <br /> BENZENE 050 20 42 6500 4500 NO <br /> TOLUENE 050 NO NO 2000 ND NO <br /> ETHYL BENZENE 050 NO 95 3100 2800 NO <br /> • TOTAL XYLENES 050 29 48 11000 4900 NO <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 570 3800 68000 46000 NO <br /> Report Limit Multiplication Factor 1 5 200 500 1 <br /> I <br /> Surrogate% Recovery FID 125%1?ID'114% RD 211%/PID 137:5 FID 111%1PID 103% RD 10MIFID 107% FID 100%1PID 102% <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 /> 0 ANALYST APPROVED BY <br /> Clan J Cone J es rltrps <br /> aboratory Director <br />