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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 tl2079 Fax (209) 384-1507 <br /> Advanced GeoEnwronmental, Inc Client Project ID Pacific Carwash Sampled 1-21-99 <br />' of Northern California Reference Number 2000 Received 1-26-99 <br /> 4005 North Wilson Way Sample Description Water Extracted 1-27-99 <br /> Stockton, CA 95205 Sample Prep/Analysis Method EPA 503018015, 8020 Analyzed 1-27-99 <br /> Attn Tim Cuellar Lab Numbers 2000-6W, 7W, 8W, 9W, 10W Reported 2-4-99 <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 6/ MW-7/ MW-8/ MW-9/ MW-10A <br /> 1-21 99 1-21 99 1-21-99 1-21-99 1-21-99 <br /> (ug/L) (ug/L) (ug/L) (ug/L] (ug/L) (ug/L) <br /> MTBE 050 ND 40 860 ND ND <br /> BENZENE 0 50 5700 220 ND ND ND <br /> TOLUENE 050 17000 12 ND ND ND <br /> ETHYL BENZENE 050 2600 ND ND ND ND <br /> TOTAL XYLENES 050 14000 60 ND ND ND <br /> GASOLINE RANGE <br /> HYDROCARBONS 50 120000 4600 470 ND NO <br /> Report Limit Multiplication Factor 500 10 2 1 1 <br /> Surrogate % Recovery FID 104%!PID 1026 FID 10/%1 PID 95 5% FID 105%!PIC 102% FID 99 7%!PID 99 1% FID 91 9%1 PID 91 8% <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 /> J <br /> ANALYST (!: APPROVED BY <br /> Clary J Cone me Phillips <br /> Environmental Lab Director <br />