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i <br /> Ile <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater,CA 95301 Phone (209)384-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental, Inc Client Protect ID Top Filling Sampled 09-04-02 <br /> I of Northern California Reference Number 5034 Received 09-05-02 <br /> 837 Shaw Road Sample Description Water Extracted 09-05-02 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8015 8020 Analyzed 09-05-02 <br /> Attn Tim Cueliar Lab Numbers 5034-16W, 17W, 18W Reported 09-12-02 <br /> I <br /> TOTAL PETROLEUM HYDROCARBONS-GASOLINE <br /> IWITH BTEX DISTINCTION <br /> I ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> VW 1C VW 2A VW 3A <br /> 09-04-02 09-04-02 09-04-02 <br /> I (ug/L) (ug/L) (uglL) (ug1L) <br /> MTBE 050 ND ND ND <br /> BENZENE 050 29000 38000 560 <br />' TOLUENE 050 47000 24000 360 <br /> le ETHYL BENZENE 0 50 3800 3200 820 <br /> ITOTAL XYLENES 050 17000 13000 3500 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 190000 150000 22000 <br /> Report Limit Multiplication Factor 2000 2000 50 <br /> I <br /> ISurrogate% Recovery FID 966%l PID 963% FID 91 5%1 PID 999% FID 127%rPiD 114% <br /> IInstrument 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 /> I <br />' ANALYST APPROVED BY C11-A <br /> Clan J Cone Ail- <br /> James h1 s <br /> Labo tory Drrectar <br />