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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 GeoE nviro n mental Inc Client Project ID Flame Mini Mart Sampled 07-21-03 <br /> of Northern Cal:forma Reference Number 5916 Received 07-23-03 <br /> 837 Shaw Road Sample Description Sod Extracted 07-25-03 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 503018015M, 8020 Analyzed 07-25-03 <br />' Attn Tim Cuellar Lab Numbers 5916-1S 2S,3S,4S, 5S Reported 07-30-03 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE€D <br /> MW7-70 MW7-80 MW7-90 MW6-15 MW6-25 <br /> (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> MTBE 0 010 22 0 019 012 ND ND <br /> BENZENE 00050 ND ND ND ND ND <br /> TOLUENE~ 00050 ND ND ND ND ND <br /> ETHYLBENZENE 00050 ND ND ND ND ND <br /> 0 TOTAL XYLENES 00050 ND ND ND ND ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 10 ND ND ND ND 30 <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> Report Limit Multiplication Factor for MTBE only 5 <br /> I <br /> Surrogate% Recovery FID 67 9%1 PID 70 1% FID 77 6%1 PID 794% FID 742%/PID 765% FID 83a%1PID 856% FID 7a0%/PID 748% <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 Lima Multiplication Factor <br /> ANALYST —APPROVED BY <br /> Cla one Jam C hilllps <br /> La ratory Director <br /> I <br />