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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 Pacific Car Wash Sampled 11-21-97 <br /> of Northern California Reference Number 1346 Received 11-25-97 <br /> 4005 N Wilson Way Sample Description Soil Extracted See Below <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed See Below <br />' Attn Tim Cuellar Lab Numbers 1346-13S, 14S, 15S Reported 12-8-97 <br />' TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW5-30 MW5-40 MW5-55 <br /> (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br />' MTBE 0 010 ND NO ND <br /> BENZENE 00050 NO NO NO <br />' TOLUENE 00050 NO NO NO <br /> ETHYL BENZENE 00050 NO NO NO <br /> TOTAL XYLENES 00050 ND NO ND <br /> GASOLINE RANGE <br />' HYDROCARBONS 10 NO NO ND <br />' Report Limit Multiplication Factor 1 1 1 <br /> Date Extracted, 12-4-97 11-26-97 12-4-97 <br /> Date Analyzed 12-597 12 1-97 12-5-97 <br />' Surrogate % Recovery FIA 112%1 PID 111% FiD 71 B%1 PID 71 7% FID 88 3%1 PID 88 7% <br /> Instrument ID VAR-GCI 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 Cone J es Phil ps <br /> Environmental Lab Director <br /> 1 <br />