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1 <br /> 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 GeoEnvrronmental, Inc Client Project ID Top Filling Sampled 12-22-98 <br />' of Northern California Reference Number 1929 Received 12-24 98 <br /> 4005 North Wilson Way Sample Description Water Extracted 12-26-98 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 12 26 98 <br /> Ann Tim Cuellar Lab Numbers 1929-6W, 7W 8W Reported 1 5 98 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br />' WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> VW 1C1 VW-21 VW-31 <br /> 12-22 98 1222-98 12 22 98 <br />' (ug&) (ug/L) (uglL) {ug/L) <br /> MTBE 050 1200 1200 3100 <br />' BENZENE 0 50 49000 34000 24000 <br /> TOLUENE 050 49000 18000 24000 <br /> ETHYL BENZENE 050 4400 3000 3200 <br /> TOTAL XYLENES 050 21000 14000 18000 <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 300000 160000 170000 <br /> I <br />' Report Limit Multiplication Factor 2000 1000 2000 <br /> 1 <br /> r <br />' Surrogate % Recovery FID 903%1 PID 102% Flo 103%1 PIP 100% FID 101%fPID 101% <br /> Instrument ID 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 't <br /> APPROVED BY <br /> Clary J Cone ;nwrni <br /> C Phrlhps <br /> mental Lab Drrecfor <br />