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1 <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 /> Advanced GeoEnvironmental, Inc Client Project ID Ca! Fuels Sampled 11-3-97 <br /> of Northern California Reference Number 1316 Received 11-5-97 <br /> 4005 N Wilson Way Sample Description Sod Extracted 11 5-97 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015M 8020 Analyzed 11-6-97 <br /> Attn Tim Cuellar Lab Numbers 1316-1S, 2S, 3S, 4S, 5S Reported 11-12-97 <br /> TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> AW1-40 AWl-45 AW1-60 AWl-70 AWl-75 <br /> (mg/kg) (mglkg) (mg/kg) (mg/kg) (mglkg) (mg/kg) <br /> MTBE 0 010 ND ND ND ND ND <br /> BENZENE 00050 19 36 0 54 0 061 035 <br /> TOLUENE 00050 120 11 1 2 078 22 <br /> ETHYL BENZENE 00050 35 39 2 0 065 090 <br /> TOTAL XYLENES 00050 160 18 7 3 31 41 <br /> GASOLINE RANGE <br /> HYDROCARBONS 1 0 2100 260 430 39 54 <br /> Report Limit Multiplication Factor 1000 100 50 10 10 <br /> Surrogate % Recovery NA NA NA NA NA <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 /> IPractical Quantitation Limit = Reporting Limit x Report Limit Multiplication Factor <br /> ANALYSTa16-,,/ APPROVED BY <br /> Can J Cone Invironmental <br /> s C Phillips <br /> Lab Director <br />