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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 Top Filling Sampled 6-14-99 <br /> of Northern California Reference Number 2314 Received 6-16-99 <br /> 4005 !North Wilson Way Sample Description Water Extracted 6-16-99 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 6 16-99 <br /> Alin Tim Cuellar Lab Numbers 2314-1 W, 2W, 3W, 4W, 5W Reported 6-23-99 <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/ MW-2/ MW 3/ MW 5/ VW-11 <br /> 6-14-99 6-14-99 6-14-99 6-14-99 6-14-99 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/U (ug/L) <br /> MTBE 050 ND NO 94 ND ND <br /> BENZENE 0 50 26 28 86 120 50000 <br /> TOLUENE 0 50 61 12 14 86 50000 <br />. ETHYL BENZENE 050 13 5 8 5 5 110 4400 <br /> TOTAL XYLENES 050 60 15 16 45 19000 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 480 310 310 2100 270000 <br /> Report Limit Multiplication Factor 2 1 2 5 2000 <br /> Surrogate % Recovery FID 104%1 PID 100% FID 107%1 PtO 100% FID 102%1 PID 97 4% FID 205%1 PID 140% FID 106%1 PID 1047b <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 /> Clary J Cone Ja 's C PhrRrps <br /> vlronmental Lab Director <br />