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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)384-1507 <br /> Advanced GeoEnvironmental, Inc. Client Project ID:Grewais Market Sampled:See Below <br /> of Northern California Reference Number.4392 Received:01-29-02 <br /> f 837 Shaw Road Sample Description:Soil <br /> P P Extracted:01-29-02 <br /> Stockton,CA 95215 Sample Prep/Analysis Method:EPA 5030/8015B, 8020 Analyzed:01-30-02 <br /> Attn:Tim Cuellar Lab Numbers:4392-1S,2S, 3S,4S, 5S Reported:02-08-02 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> ' WITH BTEX DISTINCTION <br /> ' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE iD SAMPLE ID SAMPLE ID <br /> MW4-30' MW4-45' MW4-60' P-10/15' P-10/25' <br /> (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> ' MTBE 0.010 ND ND ND ND ND <br /> BENZENE 0.0050 ND ND ND ND ND <br /> TOLUENE 0.0050 ND ND ND ND ND <br /> ETHYLBENZENE 0.0050 ND ND ND ND ND <br /> TOTAL XYLENES 0.0050 - ND ND ND ND ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 1.0 ND ND ND ND ND <br /> Report Limit Multiplication Factor: 1 1 1 1 1 <br /> ' Date Sampled: 01-23-02 01-23-02 01-23-02 01-24-02 01-24-02 <br /> ' <br /> Surrogate% Recovery: FID;72.5%1 PID:72.99E FID:74.3%1 PIP:75.0% FID:70.3%1 PIC:71.1% FID:62.0%1PID:61.9% FID;77.1%1 PIP:75.0% <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 />' ANALYST: APPROVED BY: / <br /> Clari J. Cone Ja s C. hil rps <br /> oratory Director <br />