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r <br /> r CASTLE ANALYTICAL LABORATORY <br /> • Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone (209)384-2930 <br /> rCertificate 1124811 Fax (209)384-1507 <br /> California Geophysical Client Project ID Beneto#8 Sampled 07-21-05 <br />' P O Box 578341 Reference Number 8367 Received 07-21-05 <br /> Modesto,CA 95357 Sample Description Water Extracted 07-22-05 <br /> Attn .John Cussen Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 07-22-05 <br /> Lab Numbers 8367-4W,5W, 6W,7W 8W Reported 08-08-05 <br /> rTOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> I <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br />' B-4 72 0 B-4 92 0 B-4 120 0 B-4 143 0 B-4 158 0 <br /> Ng/L (Ng/L) (pg/L) (lag/L) (lag/L) (lag/L) <br /> BENZENE 050 690 60 120 ND 67 <br />' TOLUENE 050 ND ND 19 ND ND <br /> ETHYL BENZENE 050 21 ND ND 063 ND <br />' TOTAL XYLENES 050 20 ND 23 ND 41 <br /> GASOLINE RANGE <br /> lie HYDROCARBONS 50 8000 480 420 130 1300 <br /> Report Limit Multiplication Factor 25 2 1 1 5 <br />' Report Limit Multiplication Factor for Benzene only 5 5 <br /> 1 <br /> I <br />' Surrogate%Recovery FID 164%!PID 119% FID 179%/PID 131% FID 142%fFID 109% Flo 120%1P0 105% FID 121%IP16 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 W Reporting Limit x Report Limit Multiplication Factor <br /> APPROVED BY APPROVED BY <br />' Clan J Cone JaF6es hrlkps <br /> Laboratory Manager boratory Director <br />