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i <br /> i <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater CA 95301 Phone (209) 384-2930 <br /> Certificate 112079 Fax (209) 384-1507 <br />' Advanced GeoEnvironmental, Inc Client Project ID Top Filling Sampled 12 17 97 <br /> of Northern California Reference Number 1379 Received 12-19-97 <br /> 1803 West March Lane Suite A Sample Description Water Extracted 12-23-97 <br /> Stockton, CA 95207 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 12 23-97 <br />' Attn Tim Cuellar Lab Numbers 1379 6W, 7W, 8W Reported 12-29-97 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> VW 1 C/12-1 7 97 VW 2112-17 97 VW-3112 17 97 <br /> (ug/L) (ug/L) (ug1L) Jug/L) <br /> MTBE 050 1400 860 3400 <br />' BENZENE 050 47000 46000 38000 <br /> TOLUENE 050 51000 26000 47000 <br /> ETHYL BENZENE 050 4000 4200 4300 <br /> TOTAL XYLENES 050 17000 17000 22000 <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 280000 220000 270000 <br /> Report Lima Multiplication Factor 1250 1000 1000 <br />' Surrogate % Recovery FIC 104161 Pio 102% FID 109%1 Pio 106% FID 110%1 Pio los% <br /> Instrument ID 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 /> ANALYST 'L / APPROVED BY <br /> Gan Cone e_ <br /> _1i7es C PhiR�ps <br /> /Environmental Lab Director <br />