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CASTLE ANALYTICAL LABORATORY <br /> t Environmental Testing Services P O Box 1360, Winton CA 95388 Phone (209) 384-2930 <br /> Certificate 112079 Fax (209) 384-1507 <br /> Advanced GeoEnvironmental, Inc Client Project ID Pacific Car Wash Sampled 10-28 96 <br /> ' of Northern California Reference Number 922 Received 10-31 96 <br /> 1803 West March Lane, Suite A Sample Description Water Extracted 11-2-96 <br /> Stockton, CA 95207 Sample Prep/Analysis Method 801 5M, 8020 Analyzed 11 2-96 <br /> Attn Tim Cuellar Lab Numbers 922-1W, 2W, 3W Reported 11-7-96 <br /> 1 <br /> TOTAL PETROLEUM HYDROCARBONS - GASOLINE RANGE <br /> WITH BTEX DISTINCTION <br />' ANALYTE REPORTING LIMIT SAMPLE ID SAMPLE ID SAMPLE ID <br /> P7 H2O P8 H2O P9-H20 <br /> (ug/L) (ug/L) fug/L) fug/L) <br /> 1 MTBE 050 NO ND 7 2 <br />' BENZENE 0 50 920 6000 54 <br /> TOLUENE 050 3400 9400 74 <br /> ETHYL BENZENE 050 850 790 32 <br /> TOTAL XYLENES 050 5300 4200 95 <br />' GASOLINE RANGE <br /> HYDROCARBONS 50 41000 48000 1400 <br />' Report Limit Multiplication Factor 500 500 10 <br />' Surrogate % Recovery Flo-103961 PIC 103% FlD 103%1 Pfo 103% FID 109%1 PID 105% <br /> Ingtnimpnt ih VHR Gil VAR GC1 VAR-GG1 <br /> I Practical Quantitation Limit = Reporting Limit x Report Limit Multiplication Factor <br /> Analytes reported as ND were not detected or below the Prac#ical Quantitation Limit <br /> 0(�ANALYSTJS APPROVED BY ` <br /> Clam J Cone es C Phillips <br /> Environmental Lab Director <br />