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iCASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209)384-2930 <br /> Certificate#2480 Fax (209)384-1507 <br /> California Geophysical Client Project ID Beneto#8 Sampled 07-12-05 <br />' <br /> Attn <br /> O Box 578341 Reference Number 8341 Received 07-13-05 <br /> odesto CA 95357 Sample Description Water Extracted 07-15-05 <br /> Jahn Cussen Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 07-15-05 <br /> Lab Numbers 8341-6W,7W,8W,9W, 10W Reported 07-21-05 <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-6 MW-7 MW-8 MW-9 MW-10 <br /> Ng/L (pg/L) (Ng/L) (Ng/L) (Fig/L) (Ng/L) <br /> BENZENE 050 300 1000 130 860 130 <br /> TOLUENE 050 60 ND ND~ 51 15 <br /> ETHYL BENZENE 050 ND ND NDS ND y S 083 <br />' TOTAL XYLENES 050 16 ND ND 10 34 <br /> GASOLINE RANGE <br />' HYDROCARBONS 50 1300 4300 590 2900 470 <br /> Report Limit Multiplication Factor 2 50 5 10 1 <br />' Report Limit Multiplication Factor for Benzene only 10 50 5 <br /> 1 <br /> Surrogate%Recovery FID 166%IPID 127% FID 106%IPID 995% FID 1D6%IPID 100% FII]151%IPID 117% FID 130%IPID 115% <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 /> /&,"4 - <br /> i APPROVED BY - <br /> APPROVED BY <br /> Clan J ane JamesPhi <br /> Laboratory Mana r Labor ry Director <br />