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CASTLE ANALYTICAL LABORATORY <br /> 1 Environmental Testing Services P 0 Box 1360, Winton, CA 95388 Phone (209) 384-2930 <br /> Certificate 1!2079 Fax (209) 384-1507 <br />' Advanced GeoEnvtronmental Inc Client Project ID Pacific Car Wash Sampled 10-28-96 <br /> of Northern California Reference Number 922 Received 10-31-96 <br /> 1803 West March Lane, Suite A Sample Description Soil Extracted 11 1-96 <br /> Stockton, CA 95207 Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 11 4-96 <br />' Attn Tim Cuellar Lab Numbers 922-9S, 10S, 11S Reported 11-7-96 <br />' TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> P8 25 P8 30 P840 <br /> (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> MTBE 00050 ND ND NO <br /> BENZENE 00050 ND ND 079 <br />' TOLUENE 00050 ND 57 6 8 <br /> ETHYL BENZENE 00050 ND 38 3 6 <br /> TOTAL XYLENES 00050 ND 230 200 <br /> GASOLINE RANGE <br />' HYDROCARBONS 1 0 ND 2900 250 <br /> Report Limit Multiplication Factor 1 1000 100 <br /> I <br /> Surrogate % Recovery FID 82 0%1 Pio 82 3% NA NA <br /> instrument ID VAR-GC1 VAR-GCI 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 /> 0 ANALYST APPROVED BY <br /> Clary J Cone Ja s hrllrps <br /> vrronmental Lab Director <br />