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1 <br /> CASTLE ANALYTICAL LABORATORY <br /> 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 Cal Fuels Sampled 11-4-97 <br /> of Northern California Reference Number 1316 Received 11-5-97 <br /> 4005 N Wilson Way Sample Description Sod Extracted 11 5-97 <br /> Stockton CA 95205 Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 11-7-97 <br /> Attn Tim Cuellar Lab Numbers 1316-11S, 12S Reported 11-12-97 <br /> TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID <br /> Composite <br /> AW2-85 SP2-1,2,3,4 <br /> (mg/kg) (mg/kg) (mg/kg) <br /> MTBE 0 010 NO ND <br /> I BENZENE 00050 0 023 ND <br /> TOLUENE 00050 0 056 17 <br /> ETHYL BENZENE 00050 0 01 1 17 <br /> TOTAL XYLENES 00050 0 053 92 <br /> I GASOLINE RANGE <br /> HYDROCARBONS 10 ND 1400 <br /> Report Limit Multiplication Factor 1 200 <br /> Surrogate % Recovery FID B4 6%1PRD 83 e% NA <br /> (Instrument ID 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 /> Clan J ConeJ es C Phrllrps <br /> nvronmental Lab Director <br />