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1 I <br /> . CASTLE ANALYTICAL LABORATORY <br />' Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209)3842930 <br /> Certificate#2480 Fax (209)3841507 <br />' Geological Technics, Inc Client Project 10 J M Equipment Sampled 08-19-05 <br /> 1101 7th Street Reference Number 8491 Received 08-22-05 <br /> Modesto,CA 95354 Sample Description Water Extracted 08-23-05 <br /> Attn Joseph Angulo Sample Prep/Analysis Method EPA 5030/8015M,8020 Analyzed 08-23-05 <br />' Lab Numbers 8491-1 W,2W, 3W 4W,5W Reported 09-06-05 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br />' WITH BTEX DISTINCTION RECEIVED SEP 12 2005 <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW-1 MW-2 MW-3 MW-4 MW-5 <br /> Ng/L (pg/L) (pg/L) (Ng/L) (pg/L) (pg/L) <br />' MTBE 050 ND ND ND ND 140 <br /> BENZENE 050 ND ND ND 360 5800 <br />' TOLUENE 050 ND ND ND ND 81 <br /> ETHYLBENZENE 050 ND ND ND 850 490 <br /> TOTAL XYLENES 050 ND ND ND 630 320 <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 ND ND ND 21000 19000 <br /> 1 <br /> Report Limit Multiplication Factor 1 1 1 50 50 <br /> Report Limit Multiplication Factor for Benzene only 200 <br /> 1 <br /> Surrogate%Recovery FID 918%1 PID 920% FID 925%/PID 830% FID 940%1PID 942% FID 147i61PID 113% FID 136%/PID 108% <br />' Instrument ID VAR-GC1 VAR-GC1 VAR-GCI 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 /> 1 <br /> APPROVED BY <br /> James C Phillips/Envr n e tal L b Director or <br /> Clan J Cone/Laborat ry Manager <br /> 1 <br />