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I' <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 /> I Advanced GecEnvironmental, Inc Client Project ID Nomellini Construction Sampled 8-12-97 <br /> of Northern California Reference Number 1228 Received 8-13-97 <br /> 1803 West March Lane, Suite A Sample Description Water Extracted 8-14-97 <br />' Stockton, CA 95207 Sample PreplAnalysis Method EPA 5030/8015, 8020 Analyzed 8-14-97 <br /> Attn Tim Cuellar Lab Numbers 1228-1W, 2W, 3W, 4W, 5W Reported 8-22-97 <br />' TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> I <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br />' MW-1/8-12 97 MW-218-12-97 MW-3/8-12-97 MW-418-12-97 MW-518-12-97 <br /> (ug/L) (ug/L) (ug/0 (ug/L) (uglU (ug/L) <br /> MTBE 050 NO NO NO ND 49 <br />' BENZENE 050 5600 8800 12000 3700 ND <br /> TOLUENE 050 2100 260 6500 ND NO <br /> ETHYL BENZENE 050 700 640 1900 320 NO <br />' TOTAL XYLENES 050 1800 360 5700 160 NO <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 30000 19000 89000 13000 ND <br />' Report Limit Multiplication Factor 200 200 500 100 1 <br /> rSurrogate % Recovery F0 103%f PID 102% Flo 10$%1 PID 104% Flo 104%1 PID 103% FID 107%1 PID 102% FID 101%l PID 101% <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 /> 1 � ^ <br /> ANALYST APPROVED BY <br /> C rr J Cone J& es'c Phillips <br /> Environmental Lab Director <br />