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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)3841507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Cal Fuels(Pacific) Sampled 03-08-02 <br /> of Northern California Reference Number 4487 Received 03-12-02 <br /> 837 Shaw Road Sample Descnption Water Extracted 03-1402 <br /> Stockton,CA 95215 Sample Prep/Analysis Method EPA 503018015, 8020 Analyzed 03-14-02 <br /> Attn Tim Cuellar Lab Numbers 4487-6W, 7W,8W,9W, 10W Reported 03-22-02 <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 6 MW 7 MW 8 MW 9 MW 10 <br /> 030802 030802 030802 030802 030802 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> MTBE 050 NO NO NO NO NO <br /> BENZENE 050 13 NO NO NO ND <br /> TOLUENE 050 NO NO NO ND NO <br /> ETHYL BENZENE 050 NO NO NO NO NO <br /> • TOTAL XYLENES 050 is NO NO NO NO <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 590 NO NO 77 NO <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> Surrogate%Recovery FID 114%MD 103% M 100%/PID 103% FID 92,9%/PID 955% FID 101x1PID 101% RD 976%IPID 957% <br /> Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> ANALYST APPROVED BY <br /> Clan J Cone Ja es Phillips <br /> borafary Director <br />