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' CASTLE ANALYTICAL LABORATORY <br /> 1 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 Cal Fuels Sampled 7-17-97 <br />' of Northern California Reference Number 1 193 Received 7-18-97 <br /> 1803 West March Lane Suite A Sample Description Water Extracted 7-21 97 <br /> Stockton CA 95207 Sample Prep/Analysis Method EPA 5030/8015, 8020 Analyzed 7-21-97 <br /> Attn Tim Cuellar Lab Numbers 1193-2W, 3W, 4W, 5W, 6W Reported 7-28-97 <br />' TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW-1/7 17 97 MW-2/7 17 97 MW-317-17 97 MW 417-17 97 MW-517-17-97 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) Jug/L) <br />' MTBE 050 ND ND ND ND ND <br /> BENZENE 050 3500 4900 18000 14000 ND <br /> TOLUENE 050 1600 1800 9400 1000 ND <br /> lie ETHYL BENZENE 0 50 690 820 4600 2300 ND <br /> TOTAL XYLENES 050 1400 3600 20000 8500 ND <br /> I <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 22000 33000 140000 92000 NO <br /> IReport Limit Multiplication Factor 100 100 500 500 1 <br /> Surrogate % Recovery FID 112%IPID 109% FID 114%IPIP 109% FID 109%!PID 107% FID 105%1 Pin 102% FID 104111 PID 104% <br /> instrument ID VAR GC1 VAR GC1 VAR GC1 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 /> air J o a Ja es C Phillips <br /> nw onmental Lab Director <br /> I <br />