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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> 0 HOUSTON,TEXAS 77054 <br /> PHONE(713)660-0901 <br /> r Certificate of Analysis No. H9-9603232-01 <br /> Alisto Engineering <br /> 1575 Treat Blvd. P .O. # <br /> Walnut Creek, CA 94598 GG20564 COC#055954 <br /> ATTN: Bill Howell DATE : 03/18/96 <br /> PROJECT: BP Oil #11195 PROJECT NO: 10-151-04-003 <br /> SITE: 16500 S . 1-5 , Letrop, CA MATRIX: WATER <br /> SAMPLED BY: Alisto Engine�ng DATE SAMPLED: 02/28/96 12 : 09 : 00 <br /> SAMPLE ID: S-1 ('�r� C DATE RECEIVED: 03/06/96 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE ND 10 P Ag/L <br /> Benzene ND 0 . 5 P ttg/L <br /> Toluene ND 1 P j,g/L <br /> Ethylbenzene ND 1 P j,g/L <br /> Total Xylene ND 1 P yg/L <br /> Surrogate % Recovers <br /> 1, 4-Difluorobenzene 92 <br /> 4-Bromofluorobenzene 63 <br /> =i METHOD 8020*** <br /> Analyzed by: AA <br /> Date : 03/09/96 <br /> Total Petroleum Hydrocarbons-Gasoline ND 0 . 05 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 106 <br /> 4-Bromofluorobenzene 53 <br /> CA LUFT - Gasoline <br /> Analyzed by: AA <br /> Date : 03/09/96 02 : 14 : 00 <br /> Total Petroleum Hydrocarbons-Diesel 0 . 07 0 . 050 P mg/L <br /> Surrogate % Recovery <br /> o--Terphenyl 95 <br /> 2-Fluorobiphenyl 85 <br /> CA LUFT - Diesel <br /> Analyzed by: RR <br /> Date : 03/15/96 13 : 56 : 00 <br /> ND - Not detected. (P) - Practical Quantitation Limit <br /> Notes : *Ref : Methods for Chemical Analysis of Water and Wastes, 1983 , EPA <br /> **Ref : Standard Methods for Examination of Water & Wastewater, 18th ed. <br /> ***Ref : Test Methods for Evaluating Solid Waste, EPA SW846 , 3rd Ed. <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance . <br /> SPL California License # 1903 <br />