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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services P O Box 1360, Winton, CA 95388 Phone {209} 384-2930 <br /> Certificate 112079 Fax (209) 384-1507 <br />' Advanced GeoEnvironmental, Inc Client Project ID Pacific Car Wash Sampled 9-26-96 <br /> of Northern California Reference Number 890 Received 9-27-96 <br /> 1803 West March Lane, Suite A Sample Description Soil Extracted 9-28-96 <br /> Stockton, CA 95207 Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 9-29-96 <br />' Attn Tim Cuellar Lab Numbers 890-3S, 4S, 5S, 6S, 7S Reported 10-4-96 <br /> TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> P-5-20 P-5-30 P 5-40 P-6 15 P-6-30 <br /> (mg/kg) (mg/kg) (mglkg) (mg/kg) (mg/kg) (mg/kg) <br />' MTBE 00050 NO NO ND NO ND <br /> BENZENE 00050 00088 0 069 075 NO NO <br />' TOLUENE 00050 NO 024 1 3 NO NO <br /> ETHYL BENZENE 00050 ND 012 027 NO NO <br /> TOTAL XYLENES 00050 0 030 090 1 3 NO 00057 <br /> GASOLINE RANGE <br /> HYDROCARBONS 10 NO 12 96 NO NO <br /> Report Limit Multiplication Factor 1 2 5 1 1 <br /> Surrogate % Recovery FID 88 3%1 PID 89 2% NA NA FID 90 7%1 PID 91 1% FID 94 4%1 PID 94 S% <br />■ i^St "� rO vHR-GC1 VAR-GCC VAR-G(,1 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 /> IANALYST APPROVED BY <br /> Cla Cone J es C Phillips <br /> nvrronmental Lab Director <br />