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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 6-26-01 <br /> of Northern California Reference Number 3867 Received 6-28-01 <br /> 837 Shaw Road Sample Description Water Extracted 7-4-01 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 7-4-01 <br /> Attn Tim Cuellar Lab Numbers 3867-6W, 7W,8W, 9W, 10W Reported 7-12-01 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW6 MW7 MW8 MW9 MW10A <br /> 062601 062601 062601 062601 062601 <br />' (ug/L) (ug/L) (uglL) (ug/L) (ug/L) (ug/L) <br /> MTBE 050 920 680 25 NO 30 <br /> BENZENE 050 2200 ND ND NO 057 <br />' TOLUENE 050 7900 NO NO NO 054 <br /> ETHYL BENZENE 050 2500 NO NO NO NO <br /> TOTAL XYLENES 050 15000 ND NO NO 053 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 82000 2000 NO NO 540 <br /> Report Limit Multiplication Factor 500 5 1 1 1 <br /> Report Limit Multiplication Factor MTBE only 50 <br /> I <br /> Surrogate%Recovery FID 193%f PID 100% FiD 108%JPID 104% Ff4 103%/P11) 1026 FID 904%MD 900/6 FID 309%1PID 166% <br /> Instrument ID VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 VAR-GC1 <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> I ANALYSTAPPROVED BY <br /> Clary J Cone mes Phillips <br /> el Laboratory Director <br /> I <br />