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i <br /> I 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 /> Advanced Geo Environmental Inc Client Project ID Three B s Truck Plata Sampled 3-30 99 <br /> I of Northern California Reference Number 2167 Received 4-1 99 <br /> 4005 North Wilson Way Sample Description Soil Extracted 4 2 99 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015M, 8020 Analyzed 4 4 99 <br /> Ann Tim Cuellar Lab Numbers 2167-12S, 13S, 14S, 15S, 16S Reported 4-14 99 <br />' TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW5 15 MW5-25 MW6-5 MW6 20 MW6 25 <br /> (mglkg) (mg/kg) 9mg/kg) 9mg/kg) (mg/kg) (mg/kg) <br />' MTBE 0 010 ND ND ND ND ND <br /> BENZENE 00050 ND ND 00088 022 0 031 <br />' TOLUENE 00050 ND 00066 00097 ND ND <br /> ETHYL BENZENE 00050 00053 ND ND ND NO <br /> TOTAL XYLENES 00050 ND ND 00054 00052 ND <br /> GASOLINE RANGE 1 0 ND ND ND ND ND <br /> HYDROCARBONS <br /> Report Limit Multiplication Factor 1 1 1 1 1 <br /> I <br /> I <br />' Surrogate % Recovery FID fib 6%1 PID 661% RD 541%1 PID 542% FID 56 a%l PJV 565% Flo 59 6%1 PID 5e a% FID 670%1910670% <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 /> ANALYST /�,2.( ) APPROVED BY <br /> Clary X Cone es C Phillips <br /> / Laboratory Director <br /> I <br />