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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater, CA 95301 Phone (209) 384 2930 <br /> Certificate 172079 Fax (209) 384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Three B s Truck Plaza Sampled 11-21-99 <br /> of Northern California Reference Number 2622 Received 11-23-99 <br /> 4005 North Wilson Way Sample Description Water Extracted 11-24-99 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 5030/8015, 8020 Analyzed 11-24-99 <br /> Attn Tim Cuellar Lab Numbers 2622-1W, 2W, 3W, 4W, 5W Reported 12-2-99 <br /> TOTAL PETROLEUM HYDROCARBONS -GASOLINE <br /> WITH BTEX DISTINCTION <br /> ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> MW 1 -AW 2 MW 3 MW 4 MW 5 <br /> I (ug/U (ug/L) (ug/L) iug1L) (ug/L) (ug1L) <br /> MTBE 050 ND ND ND 51 ND <br /> BENZENE 050 1900 1400 5900 ND 20 <br /> TOLUENE 050 150 69 700 ND ND <br /> lie, ETHYL BENZENE 050 130 36 780 ND ND <br /> TOTAL XYLENES 050 350 64 1 600 ND ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 6900 4600 27000 ND 1000 <br /> IReport Lima Multiplication Factor 50 50 200 1 2 <br /> I <br /> ISurrogate % Recovery Flo 100% PID 93 2% FID 700 b PID 96 9% FID 101%I PID 101% i1➢97 2%1 PID 97 9% FID 89 6%1 PIP 744% <br /> Instrument ID VAR GC1 VAR-GCI VAR-GC) VAR-GC1 VAR-(3C1 <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 /> • ' v ?'` <br /> ANALYST � APPROVED BY <br /> I Clair J Cone J;�r9ies Phillips <br /> L/Enwfonmental Lab Director <br /> I <br />