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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#1-2480 Fax (209)384-1507 <br />' Advanced GeoEnvironmental, Inc Client Project ID Top Filling Sampled 12-11-01 <br /> of Northern California Reference Number 4275 Received 12-12-01 <br /> 837 Shaw Road Sample Description Water Extracted 12-13-01 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 503018015, 8020 Analyzed 12-13-01 <br />' Attn Tim Cuellar Lab Numbers 4275-11 W, 12W 13W, 14W, 15W Reported 12-23-01 <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 7B MW 7C MW 7D MW 7E VW 1B <br /> 121101 121101 121101 121101 121101 <br /> (uglL) (uglL) (ug/L) (ug/L) (uglL) <br /> MTBE 050 NO NO NO ND ND <br />' BENZENE 050 41000 94 63 75 41000 <br /> TOLUENE 050 40000 69 46 57 77000 <br />'• ETHYL BENZENE 050 3100 90 38 94 7200 <br /> TOTAL XYLENES 050 14000 35 18 33 34000 <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 170000 540 230 250 270000 <br />' Report Limit Multiplication Factor 1000 2 2 2 2000 <br /> 1 <br /> 1 <br /> Surrogate%Recovery FID 1p8%1PI0 105% FID 123%/PID 115% FID 114%lPID 112% FID 144%1PID 1416 Flo 107%1PID 107% <br />' instrument ID VAR-GC1 VAR-GC1 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 APPROVED BY <br /> Clan J Cone J es Ph-17 rips <br /> I.Aaboratory Director <br /> 1 <br />