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CASTLE ANALYTICAL LABORATORY <br /> NW Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone: (209} 384-2930 <br /> Certificate #2079 Fax: (209) 384-1507 <br /> Advanced GeoEnvironmental, Inc. Client Project ID: Grewal's Market Sampled: 5-12-97 <br /> of Northern California Reference Number: 1116 Received: 5-13-97 <br /> 1803 West March Lane, Suite A Sample Description: Soil Extracted: 5-13-97 <br /> Stockton; CA 95207 Sample Prep/Analysis Method: EPA 5030, 8020 Analyzed: 5-14-97 <br /> Attn: Tim Cuellar Lab Numbers: 1116-1 S, 2S, 3S, 4S, 5S Reported: 5-16-97 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> P1@10' P2@10' P3@25' P4-30 P5-25 <br /> (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mglkg) (mg/kg) <br /> MTBE 0.010 ND ND 0.13 0.28 0.021 <br /> BENZENE 0.0050 ND ND ND ND ND <br /> TOLUENE 0.0050 ND ND ND ND ND <br /> ETHYL BENZENE 0.0050 ND ND ND ND ND <br /> • TOTAL XYLENES 0.0050 ND ND ND 0.026 ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 1.0 ND ND ND ND ND <br /> Report Limit Multiplication Factor: 1 1 1 1 1 <br /> Surrogate % Recovery: FID:81.9%I PID:61.e% FID:59.9%f PID:59.5% FID:71.5%l PID:71.5% FI ALS%1 PIDte1.e% F0:80.4%1 F10:S0.2% <br /> Instrument ID: VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br /> Practical Quantitation Limit = Reporting Limit x Report Limit Multiplication Factor <br /> Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> J <br /> ANALYST: APPROVED BY: <br /> ari J. Cone J v� <br /> es C. Phihi <br /> Environmental Lab Director <br />