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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> PHONE(713)660.0901 <br /> Certificate of Analysis No. H9-9703E82-06 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 ,Ste N P.O.# <br /> Renton, WA 98055 G797622 , COC#077101 <br /> ATTN: Scott Hooton DATE: 04/07/97 <br /> PROJECT: BP Oil #11195 PROJECT NO: 10-151-5-a2- <br /> SITE: <br /> 0-151-5-a2SITE: Lathrop MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 03/25/97 <br /> SAMPLE ID: S-6 DATE RECEIVED: 03/27/97 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 7400 250 P Ag/L <br /> Benzene 16 12 P ug/L <br /> CHLOROBENZENE ND 5. 0 P Ag/L <br /> 1,2-DICHLOROBENZENE ND 5. 0 P Ag/L <br /> 1, 3-DICHLOROBENZENE ND 5. 0 P Ing/L <br /> 1,4-DICHLOROBENZENE ND 5. 0 P 4g/L <br /> Toluene ND 25 P Ag/L <br /> Ethylbenzene ND 25 P Mg/L <br /> Total Xylene ND 25 P pg/L <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 91 <br /> 4-Bromofluorobenzene 95 <br /> Method 8020A*** <br /> Analyzed by: JN <br /> Date: 04/04/97 <br /> Total Petroleum Hydrocarbons-Gasoline 5. 3 0. 25 P mg/L <br /> Surrogate % Recovery <br /> 1,4-Difluorobenzene 87 <br /> 4-Bromofluorobenzene 87 <br /> California LUFT Manual <br /> Analyzed by: fab <br /> Date: 04/03/97 08: 05: 00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <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 />