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t 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 10-19-98 <br /> of Northern California Reference Number 1808 Received 10-20-98 <br />' 4005 North Wilson Way Sample Description Water Extracted 10-21 98 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 10 21 98 <br /> Attn Tim Cuellar Lab Numbers 1808-9W, i OW, 11 W Reported 10-27-98 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br />' WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 6 MW-1 OA MW-108 <br /> 10-19-98 10-1993 10 19 98 <br /> (uglL) (uglL) (ug/Q {uglQ _ <br /> MTBE 050 ND ND 1 2 <br /> BENZENE 050 5700 43 17 <br /> TOLUENE 050 17000 120 71 <br /> ETHYL BENZENE 060 2500 25 20 <br /> TOTAL XYLENES 050 13000 95 87 <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 110000 700 570 <br /> Report Limit Multiplication Factor 500 5 2 <br /> Report Limit Multiplic <br /> Surrogate % Recovery FID 104%1 PID 104% FID 104%1 PID 103% FID 107%1 PID 105% <br /> Bair iv <br /> . II'VC i <br /> V/11Z V6..1 VAR--GC <br /> YMR Irl„ G^ 1 <br /> - <br /> t 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 /> TANALYST APPROVED BY <br /> Clary J Cone J mes C Phillips <br /> Invrronmental Lab Director <br />